Method of making a thick flap at the open end of a condom; new methods of rolling up condoms; and devices/instruments required to roll up a condom according to such methods

Abstract

A method of making a thick and more graspable flap at the open end of the condom (to allow easier manipulation of the latter); new methods of rolling up condoms; and the devices/instruments required to roll up the said condom according to such methods are disclosed. New methods of rolling up condoms permit the manufacturing of a new generation of condoms that are made of considerably thinner and stronger synthetic materials which provide numerous advantages: easier unrolling, vastly improved feel/sensation, stronger (less prone to tearing), no microscopic pores in the sheath, non-allergenic, allowing concomitant use of an spermicide, and even permitting the condom to be worn “inside out” or in the correct manner.

1 . Method for making a “thick” flap at the open end of a condom by utilizing a portion of the shaft of the said condom, so that the said shaft and the said flap of the said condom are made of a continuous structure, as opposed to two separate pieces attached to one another, comprising:
 Having a condom with an open end, a shaft, and a closed end (apex), in an extended state, and “mounted” over a mandrel in such a manner that the corresponding parts of the said condom and those of the said mandrel are in close proximity i.e. the said apex of the said condom is positioned over the apex of the said mandrel while the said shaft of the said condom is positioned over the shaft of the said mandrel ( FIG. 1.3 ).   Making a small portion of the “open end area” of the said condom [i.e. a small portion (length) of the said shaft of the said condom adjacent to the said open end of the said condom] thicker than the rest of the said shaft of the said condom, which is achieved by:   Forcing a portion of the said shaft adjacent to the said open end of the said condom to move longitudinally in the direction of the said open end of the said condom, thus causing the said portion of the said shaft of the said condom to scrunch and make a number of small folds, creases and wrinkles lying alongside as well as over one another, thus creating a thicker section ( FIG. 1.4 ).   The structure of thus created thicker section is then made permanent so as to avoid its “unraveling”, by means of a suitable method, such as application of a suitable adhesive material to the said area, or application of heat [which may be applied by a hot device (heated surface), or other methods such as microwave, etc.] thus creating a permanent thick flap ( FIG. 1.5 ).   The said thick flap and the said condom shaft may have any desired angles relative to one another ( FIGS. 1.5  &  1 . 6 ).   
   
   
       2 . This section (i.e.  2 A,  2 B,  2 C,  2 D and  2 E below) as well as the sections denoted as  3 A,  3 B,  4 A,  4 B and  4 C (below) describe devices that are invented in order to enable the industry to prepare a condom that is double-layered along approximately its entire shaft area, before the said double-layered condom is allowed to be rolled up by any of the conventional methods, as follows: 
   
   
       2 A. One version of the invention comprises a hollow cylinder (made of suitable materials) which has two open ends and possesses the following attributes:
 The cross section of the said hollow cylinder may be a circle, a square, a hexagon, or any other similar shape;   The inside diameter of the said hollow cylinder (i.e. the “cavity”) is somewhat greater than that of the shaft of the condom which is to be used in the said new rolling up methods;   The inside wall of the said hollow cylinder possesses an adequate number of pores of suitable dimensions arranged in an annular or haphazard manner along its surface ( FIG. 2 );   The said pores are connected to an air-suction pump so that when the said air pump is switched on, the air from the space inside the hollow cylinder is sucked out through the said pores and expelled/released into the outside environment, thus reducing the atmospheric pressure inside the said hollow cylinder compared to the atmospheric pressure outside of it, thereby producing a somewhat negative atmospheric pressure within the “cavity” of the said hollow cylinder.   
   
   
       2 B. Another version of the invention comprises a hollow cylinder, which is identical to the hollow cylinder described above ( 2 A), with an additional attribute, which is the possession of a “pore blocker” ( FIG. 2.1 ).
 In one version of the invention, the said pore blocker consists of a tube-like hollow cylinder made of suitable and thin material which is “collapsible”, therefore capable of extending its length (height), thus creating a progressively longer “tube”.   In another version of the invention, the said pore blocker may be made of a number of hollow rings that fit over one another, like a telescope, so that when two adjacent rings are forced apart (by subjecting one ring to a force in one direction while subjecting the other ring to a force in the opposite direction) the said rings will slide over one another without coming apart, thus “telescopically” increase the cylindrical length (height) of the said pore blocker. In another version of the invention, the said pore blocker may be made of a tube of flexible material that is wound around a ring in such a way that unwinding the said ring of the flexible material would cause the length (height) of the said cylindrical pore blocker to be increased in a progressive manner.   The said pore blockers may be positioned either on the inside of, or be positioned on the outside of the said wall of the said hollow cylinder, in close proximity to the said pores of the said hollow cylinder.   
   
   
       2 C. Another version of the invention comprises a hollow cylinder, which is identical to the hollow cylinder described above ( 2 B), with an additional attribute, which is the possession of a “plate”.
 The said plate, having a size (diameter) somewhat greater than that of the said open end of the said hollow cylinder, is made of a sheet of a suitable and flexible material.   The said sheet of the said plate possesses one or more slits of adequate length(s) across its surface ( FIG. 2.2 ).   The length(s) of the said slit(s) is/are large enough so as to allow a mandrel (which is used in the rolling up of a condom) to pass through the said slit(s) of the said plate.   
   
   
       2 D. Another version of the invention comprises a hollow cylinder, which is identical to the hollow cylinder described above ( 2 B), with an additional attribute, which is the possession of a “plate” that has attributes which are somewhat different to those of the plate in  claim 2 C, above.
 The plate in this version of the invention is made of a number of smaller sheets (of suitable materials) that slide over one another in such a manner as to allow a “hole” to be “created” at the center of the said plate in a similar manner to that of the aperture that covers the lens of a conventional camera which “opens” in order to create a “hole” so as to allow light to go through ( FIG. 2.3 ).   The size (diameter) of the said hole is slightly greater than the size (diameter) of a mandrel (which is used in the rolling up of a condom) so as to allow the said mandrel to pass through the said hole of the said plate.   
   
   
       2 E. Another version of the invention comprises a hollow cylinder, which is identical to the hollow cylinder described above ( 2 B), with an additional attribute, which is the possession of a “plate” that has attributes which is somewhat different to those of the plates in  claims 2 C and  2 D, above.
 The plate in this version of the invention is made of a sheet of a suitable material that possesses a permanent circular hole in its center.   The size (diameter) of the said permanent hole is slightly greater than the size (diameter) of a mandrel (which is used in the rolling up of a condom) so as to allow the said mandrel to pass through the said hole of the said plate ( FIG. 2.4 ).   
   
   
       3 A. A hollow mandrel that possesses a number of “pores”, as below:
 The surface of the said mandrel possesses an adequate number of pores of suitable dimensions which are arranged in an annular or haphazard manner over the apex and along the shaft of the said mandrel for a distance that is equal to approximately half of the length of a condom that will be used later in the process ( FIG. 3 ).   The said pores are connected to a rod-like cavity which exists at the “core” of the said mandrel and which runs longitudinally along the length of the said mandrel.   The said mandrel also allows an air-suction pump to be connected to the said rod-like cavity at the core of the said mandrel.   
   
   
       3 B. Another version of the invention comprises a hollow mandrel whose “body/shell” (i.e. its shaft and apex) is made up of longitudinal strips of a suitable material.
 The said strips can slide over one another in such a manner as to allow the said mandrel to assume different diameters i.e. become “slimmer” or “fatter” in diameter.   The surface of the said strips possess an adequate number of pores of suitable dimensions arranged in an annular or haphazard manner over the areas that make up the said apex and a part of the said shaft of the said mandrel that is adjacent to the said apex for a distance that is equal to approximately half of the length of the condom that will be used later in the process ( FIG. 3.1 ).   The hollow part (the rod-like cavity) of the said mandrel is connected to an air-suction pump.   
   
   
       4 A. A hollow mandrel that possesses a number of “pores” as well as possessing a “grip device” (a vise or a suction “cup”), as below:
 The surface of the said mandrel possesses an adequate number of pores of suitable dimensions which are arranged in an annular or haphazard manner along the said mandrel's length as well as on its apex ( FIG. 4.1 ).   The said pores are connected to a rod-like cavity which exists at the “core” of the said mandrel and which runs longitudinally along the length of the said mandrel.   The said rod-like cavity at the core of the said mandrel is connected to an air-blowing pump.   The said mandrel also possesses a “grip device” (a vise or a suction “cup”) that is capable of grasping and holding a condom “in place”.   
   
   
       4 B. Another version of the invention comprises a hollow mandrel that possesses all the attributes of the mandrel described in the claim number  4 A (above), except that:
 1) A portion of the said pores, corresponding to those pores that are positioned on the apex and a part of the adjacent shaft of the said mandrel (equal to approximately half the length of the shaft of the condom that will eventually “mount” the said mandrel) are connected (via a set of tubes) to an air-suction pump (through the said rod-like cavity), and   2) The remainder of the said pores on the said shaft of the said mandrel are connected (via a separate set of tubes) to an air-blowing pump (through the same said rod-like cavity).   
   
   
       5 . Method for preparing a condom that is double-layered along approximately its entire shaft area as described below:
 In this version of the invention, a condom (which is identical to the condom as described in claim number  1 ), is “mounted” over a mandrel (which is identical to the hollow mandrel explained in claim number  3 A), in such a manner that the corresponding parts of the said condom and those of the said mandrel are positioned in close proximity to one another i.e. the apex of the said condom is positioned over the apex of the said mandrel, while the shaft of the said condom is positioned over the shaft of the said mandrel; and as the said shaft of the said mandrel is chosen to be longer than the said shaft of the said condom, therefore the said shaft of the said mandrel extends beyond the said open end and the said flap of the said condom ( FIG. 5 ).   The air-suction pump (which is connected to the rod-like cavity at the core of the said mandrel) is then switched on, which causes the portion of the said condom which is positioned over the pores of the said mandrel (consisting of the apex plus a length of the shaft of the said condom that is directly behind the said apex of the said condom) to become “stuck/fixed” onto the corresponding parts of the said mandrel, while the rest of the said condom (consisting of the remaining part of the said shaft plus the said flap of the said condom, which are mounted over the part of the said shaft with no pores) is allowed to remain “un-stuck” to the corresponding parts of the said mandrel ( FIG. 5.1 ).   The double-layering of the said condom shaft may then be carried out as below:   The said flap and the said “un-stuck” portion of the said shaft of the said condom are then forced (see methods of application of the force, below) to move longitudinally, in the direction towards the said apex of the said condom, along and over the said “fixed/stuck” portion of the said shaft of the said condom and continue moving in the said manner until all of that portion of the said shaft of the said condom that had remained “un-stuck” is “consumed” into making a double-layered condom shaft, i.e. until the said flap of the said condom is positioned at a level that is just behind, or at the same level as, or slightly ahead of the said apex of the said condom, thus creating a condom that possesses a double-layered shaft ( FIGS. 5.2  &  5 . 4 ).   The air-suction pump connected to the said hollow mandrel is then switched off.   The said condom with the double-layered shaft is then rolled up using any of the conventional methods of rolling up condoms, while the said flap of the said condom may remain unrolled.   The methods of application of the said force that causes the said double-layering of the said condom shaft may be provided by any one of the methods described below:   
   
   
       5 A. In one version of the invention, the said force may be provided by a “sudden” and relatively strong burst of air, or alternatively, by a relatively strong and continuous laminar air flow, blowing from an area beyond the said flap, in the direction that is towards the said apex of the said condom ( FIG. 5.1 ).
 The said burst of air, or the alternative strong and continuous laminar air flow, causes the said flap and the said “un-stuck” portion of the said shaft of the said condom to move longitudinally along and over the said “fixed/stuck” portion of the said shaft of the said condom until the said flap of the said condom is positioned at a level that is just behind, or at the same level as, or slightly ahead of the said apex of the said condom, thus creating a condom that possesses a double-layered shaft ( FIG. 5.2 ).   
   
   
       5 B. In another version of the invention, the said force may be provided by physically “grabbing” the said flap of the said condom by machinery (e.g. a vise or a suction device) and pulling the said flap in the direction that is towards the said apex of the said condom ( FIG. 5.3 ).
 The said grabbing and pulling causes the said flap and the said “un-stuck” portion of the said shaft of the said condom to move longitudinally along and over the said “fixed/stuck” portion of the said shaft of the said condom until the said flap of the said condom is positioned at a level that is just behind, or at the same level as, or slightly ahead of the said apex of the said condom, thus creating a condom that possesses a double-layered shaft ( FIG. 5.4 ).   
   
   
       6 . Method for “preparing” a condom that is double-layered along approximately its entire shaft area, by using a mandrel which is identical to the hollow mandrel described in the claim number  4 B, as described below:
 a) Having a condom (as described in claim number  1  above) with an open end (rim or flap), a shaft, and a closed end (apex) ( FIGS. 1.5  &  1 . 6 ), in an “extended state”,   b) The said condom is “mounted” over a mandrel (which is identical to the one described in claim number  4 B) in such a manner that the corresponding parts of the said condom and those of the said mandrel are positioned in close proximity to one another i.e. the said apex of the said condom is positioned over the apex of the said mandrel while the said shaft of the said condom is positioned over the shaft of the said mandrel ( FIG. 6 ).   c) Next, the air-suction pump, and soon afterwards, the air-blowing pump that are connected to the rod-like cavity at the core of the said mandrel are switched on in such a manner as to operate at a controlled rate.   d) As a result of the action of the said air-suction pump, the said apex of the said condom plus its adjacent (approximately) half of the said shaft of the said condom become “attached/stuck” onto the corresponding parts of the said mandrel; and   e) As a result of the action of the said air-blowing pump, the said remaining half of the said shaft of the said condom plus the said flap of the said condom become minutely inflated and thus “unstuck/unattached” to the said mandrel.   f) The said flap and the said “un-stuck” portion of the said shaft of the said condom are then forced (see methods of application of the force, claim number:  5 A, or  5 B above) to move longitudinally, in the direction towards the said apex of the said condom, along and over the said “fixed/stuck” portion of the said shaft of the said condom and continue moving in the said manner until all of that portion of the said shaft of the said condom that had remained “un-stuck” is “consumed” into making a double-layered condom shaft, i.e. until the said apex of the said condom is positioned at a level that is just behind, or at the same level as, or slightly ahead of the said open end of the said condom, thus creating a condom that possesses a double-layered shaft ( FIGS. 6.1 ,  6 . 2 ,  6 . 3  &  6 . 4 ).   g) Both of the said air pumps connected to the said hollow mandrel are then switched off.   h) The said condom with the double-layered shaft is then rolled up using any of the conventional methods of rolling up condoms, while the said flap of the said condom may remain unrolled.   
   
   
       7 . Method for preparing a condom that is double-layered along approximately its entire shaft area, by using a hollow cylinder, as below:
 Having a condom (as described in claim number  1  above) with an open end (rim or flap), a shaft, and a closed end (apex) ( FIGS. 1.5  &  1 . 6 ), in an “extended state”.   The said condom is “mounted” over a mandrel (which is identical to the one described in claim number  4 A).   The said flap of the said condom is grasped and held “in place” by a vise (or a suction cup) on the said mandrel.   The corresponding parts of the said condom and those of the said mandrel are thus positioned in close proximity to one another i.e. the said apex of the said condom is positioned over the apex of the said mandrel while the said shaft of the said condom is positioned over the shaft of the said mandrel ( FIG. 7 ).   The said mandrel (with the “mounted” condom) is then made to enter into the inside space (cavity) of a hollow cylinder that is identical to the one described in claim number  2 B, through one of the open ends of the said hollow cylinder ( FIG. 7.1 ).   At this time, the air-suction pump which is connected to the said hollow cylinder is switched on in order to reduce the atmospheric pressure inside the said hollow cylinder compared to the atmospheric pressure outside of it, thereby producing a somewhat negative atmospheric pressure within the “cavity” of the said hollow cylinder.   Next, the air-blowing pump that is connected to the said mandrel is switched on (at a controlled rate), causing the said condom that is mounted over the said mandrel to inflate (minutely) and detach itself from the said mandrel, while the said flap of the said condom is grasped and held “in place” by the said vise (or suction cup) on the said mandrel (to prevent the said condom from “flying away”).   By adjusting the forces of the said two pumps mentioned above to an optimum level, a situation is created in which the said (minutely) inflated and detached (from the said mandrel) condom will attach itself to the said inside wall of the said hollow cylinder, while the said condom continues to exist in its extended state.   Then, the vise (or suction cup) holding the flap of the said condom is “disengaged” so as to let the said flap “free”.   
     Next, the said air-blowing pump of the said mandrel is switched off.
 The said condom will now remain attached to the said inside wall of the said hollow cylinder, due to the continued presence of the said suction force of the said air-suction pump of the said hollow cylinder. 
 At this stage, a second mandrel (which is identical to the mandrel described in claim number  3 A but being slightly smaller in all its dimensions than those of the said condom) is forced to enter into the cavity of the said hollow cylinder (while the air-suction pump of the said second smaller mandrel is switched on, and the said air-suction pump of the said hollow cylinder is also still switched on) through the other open end of the said hollow cylinder, in the following manner: the apex of the said second (smaller) mandrel touches the said apex of the said condom and continues its journey in the same direction, which is towards the said open end of the said condom, while at the same time, pushing the said first mandrel backwards ( FIG. 7.2 ). 
 As the said journey continues, initially the said apex of the said condom will be progressively attracted (and attached/“stuck”) to the said apex of the said second (smaller) mandrel, due to the suction force that exists as a result of the said air-suction pump involved with the said second (smaller) mandrel. Thus, the said apex of the said condom will become “inverted” and mount itself over the said apex of the said second (smaller) mandrel, then the said shaft of the said condom will progressively become detached from the said inside wall of the said hollow cylinder and mount itself over the shaft of the said second (smaller) mandrel. 
 Using a pore blocker (that is identical to any one of the pore blockers described in the claim number  2 B, above), will help the process of detachment of the said shaft of the said condom from the said inside wall of the said hollow cylinder, as follows: 
 The said pore blocker is allowed to extend/increase its length (height) at approximately the same rate of speed and in the same direction as that of the said second (smaller) mandrel, in such a manner that the “advancing edge” of the said pore blocker remains approximately at the same level as the tip of the said apex of the said second (smaller) mandrel. 
 As the pore blocker blocks the corresponding pores on the said hollow cylinder and stops the air suction through the said pores, the part of the said condom that is in contact with the said blocked pores is no longer subjected to the suction force that caused the said condom to “stick” to the said inside wall of the said hollow cylinder in the first place, thus making it easier for the said portion of the said condom to become detached from the said inside wall of the said hollow cylinder. 
 The above journey continues until the desired length of the said shaft of the said condom is “consumed” in the folding or the double-layering process, which is until the said apex of the said condom is positioned at a level that is just behind, or at the same level as, or slightly ahead of the said open end of the said condom. 
 
     At this point the said journey comes to a halt ( FIG. 7.3 ).
 Next, all the air pumps involved in the processes are switched off, which will allow the rest of the said shaft of the said condom that was still attached to the said inside wall of the said hollow cylinder to become un-stuck, and thus “fall” onto the said second (smaller) mandrel (helped by the elasticity of the condom material), creating a condom that is double-layered along its shaft. 
 The said double-layered shaft can then be rolled up using any of the conventional methods of rolling up of condoms. 
 
   
   
       8 . Method for preparing a condom that is double-layered along approximately its entire shaft area, by using a hollow cylinder whose open ends are “covered” by “plates”, as described below:
 Having a condom (as described in claim number  1  above) with an open end (rim or flap), a shaft, and a closed end (apex) ( FIGS. 1.5  &  1 . 6 ), in an “extended state”   The said condom is “mounted” over a mandrel (which is identical to the one described in claim number  4 A).   The said flap of the said condom is grasped and held “in place” by a vise (or a suction cup) on the said mandrel.   The corresponding parts of the said condom and those of the said mandrel are thus positioned in close proximity to one another i.e. the said apex of the said condom is positioned over the apex of the said mandrel while the said shaft of the said condom is positioned over the shaft of the said mandrel ( FIG. 7 ).   The said mandrel (with the “mounted” condom) is then made to enter into the inside space (cavity) of a hollow cylinder that is identical to the one described in claim number  2 C, through one of the open ends of the said hollow cylinder.   The said open end of the said hollow cylinder is “covered” by a “plate” that possesses a permanent circular hole (as described in claim number  2 E).   The said mandrel (with the “mounted” condom) will proceed to pass through the said circular hole of the said plate and enter into the “cavity” of the said hollow cylinder until all the said shaft of the said condom has passed through the said central hole and only the said flap of the said condom is left “behind” the said central hole, at which point the said “journey” comes to a halt ( FIG. 8 ).   The other open end of the said hollow cylinder is covered by another “plate”, which may be any one of the two remaining plates that were described in claim number  2 C &  2 D above.   At this time, the air-suction pump which is connected to the said hollow cylinder is switched on in order to reduce the atmospheric pressure inside the said hollow cylinder compared to the atmospheric pressure outside of it, thereby producing a somewhat negative atmospheric pressure within the “cavity” of the said hollow cylinder.   Next, the air-blowing pump that is connected to the said mandrel is switched on (at a controlled rate), causing the said condom that is mounted over the said mandrel to inflate (minutely) and detach itself from the said mandrel, while the said flap of the said condom is grasped and held “in place” by the said vise (or the suction cup) on the said mandrel (to prevent the said condom from “flying away”).   By adjusting the forces of the said two pumps mentioned above to an optimum level, a situation is created in which the said (minutely) inflated and detached (from the said mandrel) condom will attach itself to the said inside wall of the said hollow cylinder, while the said condom continues to exist in its extended state.   Then, the vise (or the suction cup) holding the flap of the said condom is “disengaged” so as to let the said flap “free”.   Next, the said air-blowing pump of the said mandrel is switched off.   The said condom will now remain attached to the said inside wall of the said hollow cylinder, due to the continued presence of the said suction force of the said air-suction pump of the said hollow cylinder.   At this stage, a second mandrel (which is identical to the mandrel described in claim number  3 A but being slightly smaller in all its dimensions than those of the said condom) is forced to enter into the cavity of the said hollow cylinder (while the air-suction pump of the said second smaller mandrel is switched on, and the said air-suction pump of the said hollow cylinder is also still switched on) through the plate that is covering the other open end of the said hollow cylinder, in the following manner: the apex of the said second (smaller) mandrel touches the said apex of the said condom and continues its journey in the same direction, which is towards the said open end of the said condom, while at the same time, pushing the said first mandrel backwards ( FIG. 8.1 ).   As the said journey continues, initially the said apex of the said condom will be progressively attracted (and attached/“stuck”) to the said apex of the said second (smaller) mandrel, due to the suction force that exists as a result of the said air-suction pump involved with the said second (smaller) mandrel. Thus, the said apex of the said condom will become “inverted” and mount itself over the said apex of the said second (smaller) mandrel, then the said shaft of the said condom will progressively become detached from the said inside wall of the said hollow cylinder and mount itself over the shaft of the said second (smaller) mandrel.   Using a pore blocker (that is identical to any one of the pore blockers described in the claim number  2 B above), will help the process of detachment of the said shaft of the said condom from the said inside wall of the said hollow cylinder.   The said pore blocker is allowed to increase its length (height) at approximately the same rate of speed and in the same direction as that of the said second (smaller) mandrel, in such a manner that the “advancing edge” of the said pore blocker remains approximately at the same level as the tip of the said apex of the said second (smaller) mandrel.   As the said pore blocker blocks the corresponding pores on the said hollow cylinder and stops the air suction through the said pores, the part of the said condom that is in contact with the said blocked pores is no longer subjected to the suction force that caused the said condom to “stick” to the said inside wall of the said hollow cylinder in the first place, thus making it easier for the said portion of the said condom to be detached from the said inside wall of the said hollow cylinder.   The above journey continues until the desired length of the said shaft of the said condom is “consumed” in the folding or the double-layering process, which is until the said apex of the said condom is positioned at a level that is just behind, or at the same level as, or slightly ahead of the said open end of the said condom.   At this point the said journey comes to a halt ( FIG. 8.2 ).   Next, all the air pumps involved in the processes are switched off, which will allow the rest of the said shaft of the said condom that was still attached to the said inside wall of the said hollow cylinder to become un-stuck, and thus “fall” onto the said second (smaller) mandrel (helped by the elasticity of the condom material), creating a condom that is double-layered along its shaft.   Next, the two plates covering the said open ends of the said hollow cylinder are removed.   The said double-layered shaft can then be rolled up using any of the conventional methods of rolling up of condoms.   
   
   
       9 . Method for preparing a condom that is double-layered along approximately its entire shaft area, by using a hollow cylinder which is identical to the one described in the claim number  2 B above, as described below:
 Having a condom (as described in claim number  1  above), with an open end (rim or flap) a shaft, and a closed end (apex),  FIGS. 1.5  &  1 . 6 , in an extended state.   The said flap of the said condom is grasped and “held” in position by a vise (or a suction cup).   The said condom is then subjected to a sufficiently strong laminar air flow that blows air from an area beyond the said flap into the “body” of the said condom i.e. in the direction that is towards the said flap, the said shaft and the said apex; thus allowing the said condom to assume a fully extended position i.e. its “cylindrical shape” ( FIG. 9 ).   The said condom is then made to enter into the inside space (cavity) of a hollow cylinder that is identical to the one described in claim number  2 B, through one of the open ends of the said hollow cylinder ( FIG. 9.1 ).   At this time, the air-suction pump which is connected to the said hollow cylinder is switched on in order to reduce the atmospheric pressure inside the said hollow cylinder compared to the atmospheric pressure outside of it, thereby producing a somewhat negative atmospheric pressure within the “cavity” of the said hollow cylinder.   By adjusting the “forces” of the said two pumps (that are involved with the said condom and the said hollow cylinder) to an optimum level, a situation is created in which the said extended condom will attach itself to the inside wall of the said hollow cylinder.   Next, the said laminar air flow that blows air into the “body” of the said condom is switched off.   Then, the vise (or the suction cup) holding the flap of the said condom is “disengaged” so as to let the said flap “free”.   At this stage, a mandrel which is identical to the mandrel described in claim number  3 A, but being slightly smaller in all its dimensions than those of the said condom, is forced to enter into the cavity of the said hollow cylinder (while the air-suction pump of the said mandrel is switched on, and the said air-suction pump of the said hollow cylinder is also still switched on) through the other open end of the said hollow cylinder, in the following manner: the apex of the said mandrel touches the said apex of the said condom and continues its journey in the same direction, which is towards the said open end of the said condom.   As the said journey continues, initially the said apex of the said condom will be progressively attracted (and attached/“stuck”) to the said apex of the said mandrel, due to the suction force that exists as a result of the said air-suction pump involved with the said mandrel. Thus, the said apex of the said condom will become “inverted” and “mount” itself over the said apex of the said mandrel, then the said shaft of the said condom will progressively become detached from the said inside wall of the said hollow cylinder and mount itself over the shaft of the said mandrel ( FIG. 9.2 ).   Using a pore blocker that is identical to any one of the two pore blockers described in the claim number  2 B, above, will help the process of detachment of the said shaft of the said condom from the said inside wall of the said hollow cylinder.   The said pore blocker is allowed to increase its length (height) at approximately the same rate of speed and in the same direction as that of the said mandrel, in such a manner that the “advancing edge” of the said pore blocker remains approximately at the same level as the tip of the said apex of the said mandrel.   As the said pore blocker blocks the corresponding pores on the said hollow cylinder and stops the air suction through the said pores, the part of the said condom that is in contact with the said blocked pores is no longer subjected to the suction force that caused the said condom to “stick” to the said inside wall of the said hollow cylinder in the first place, thus making it easier for the said portion of the said condom to be detached from the said inside wall of the said hollow cylinder.   The above journey continues until the desired length of the said shaft of the said condom is “consumed” in the folding or the double-layering process, which is until the said apex of the said condom is positioned at a level that is just behind, or at the same level as, or slightly ahead of the said open end of the said condom.   At this point the said journey comes to a halt ( FIG. 9.3 ).   Both of the air pumps involved in the process are then switched off, which will allow the rest of the said shaft of the said condom that was still attached to the said inside wall of the said hollow cylinder to become un-stuck, and thus “fall” onto the said mandrel (helped by the elasticity of the condom material), creating a condom that is double-layered along its shaft.   The said double-layered shaft can then be rolled up using any of the conventional methods of rolling up of condoms.   
   
   
       10 . Method for preparing a condom that is double-layered along approximately its entire shaft area using air pressure, as described below:
 Having a condom (as described in claim number  1  above), with an open end (rim or flap) a shaft, and a closed end (apex) ( FIGS. 1.5  &  1 . 6 ) in an “extended state”.   The said flap of the said condom is grasped and “held” in position by a vise (or a suction cup).   The said condom is then subjected to a sufficiently strong laminar air flow that blows air from an area beyond the said flap into the “body” of the said condom i.e. in the direction that is towards the said flap, the said shaft and the said apex; thus allowing the said condom to assume a fully extended position i.e. its “cylindrical shape” ( FIG. 9 ).   At this stage, a mandrel which is identical to the mandrel described in claim number  3 A, but being slightly smaller in all its dimensions than those of the said condom, is allowed to approach the said condom in the following manner (while the air-suction pump that is connected to the cavity of the said mandrel is switched on): the apex of the said mandrel touches the said apex of the said condom and continues its journey in the same direction, which is towards the said open end of the said condom.   As the said journey continues, initially the said apex of the said condom will be progressively attracted (and attached/'stuck) to the said apex of the said mandrel, due to the suction force that exists as a result of the said air-suction pump involved with the said mandrel. Thus, the said apex of the said condom will become “inverted” and “mount” itself over the said apex of the said mandrel, then the said shaft of the said condom will progressively mount itself over the shaft of the said mandrel ( FIG. 10 ).   The above journey continues until the desired length of the said shaft of the said condom is “consumed” in the folding or the double-layering process, which is until the said apex of the said condom is positioned at a level that is just behind, or at the same level as, or slightly ahead of the said open end of the said condom.   At this point the said journey comes to a halt ( FIG. 10.1 ).   Both of the air pumps involved in the process are then switched off, which will allow the rest of the said shaft of the said condom to “fall” onto the said mandrel, creating a condom that is double-layered along its shaft.   Then, the vise (or the suction cup) holding the flap of the said condom is “disengaged” so as to let the said flap “free”.   The said double-layered shaft can then be rolled up using any of the conventional methods of rolling up of condoms.