Dumbbell

Abstract

An apparatus for applying an optional number of weight disks on a dumbbell includes a base unit, a first and second set of separate weight disks and a handle. The base unit has a first and second group of retainers which support the first and second set of weight disks. On the handle, a selectable number of weight disks are disposed from the first and second set of weight disks. The weight disks have openings which are closed towards the peripheries of the weight disks. The handle has pin devices which are axially projectable in opposing directions for insertion in the openings of the weight disks. The projection of the pin devices out of the handle is selectable for adaptation of the length of the pin device to the number of weight disks that are to be secured on the handle. The pin devices are further lockable with locks, in selected projectional positions in relation to the handle, and have, on their free ends, locks for fixedly retaining the selected number of weight disks.

1 . An apparatus for applying an optional number of weight disks on a dumbbell, and comprising: a base unit with a first and second group of retainer means which are designed for cooperation with a first and a second set, respectively, of separate upright weight disks, a first and second set of separate weight disks, the weight disks having openings that are closed towards the periphery of the weight disks and that are disposed substantially along a straight line on the cooperation of the weight disks with the retainer means, a handle with pin devices axially projectable in opposing directions for insertion in the openings of the weight disks, the projection of the pin devices out of the handle being selectable in order thereby to permit the choice of the number of weight disks accommodated on the handle, and locking means by which the pin devices are lockable in selected projectional positions in relation to the handle, wherein the locking means further include disk locking devices by means of which the number of weight disks defined by the projectional position are lockable on each respective pin device, the disk locking devices being disposed at the free ends of the pin devices, and have locking positions where they are located axially outside surface areas on the outermost weight disks, these surface areas surrounding the openings of the weight disks. 
   
   
       2 . The apparatus as claimed in  claim 1 , wherein the disk locking devices are movable to their locking positions by a substantially radial displacement. 
   
   
       3 . The apparatus as claimed in  claim 1 , wherein the disk locking devices are movable to their locking positions by rotation of the pin devices or the disk locking devices about the longitudinal axes of the pin devices. 
   
   
       4 . The apparatus as claimed in  claim 1 , wherein the disk locking devices are spring biased towards their radially outer positions and that the weight disks have bevels about their openings. 
   
   
       5 . The apparatus as claimed in  claim 4 , wherein the handle at opposing ends has housing means with engagement means for non-rotational cooperation with the base unit, that the handle has a radially outer portion which is rotatably journalled in the housing means, that the pin devices are disposed interiorly in the outer portion and axially displaceable but non-rotatably guided in each respective housing means, and that there is disposed, in the handle, a screw or worm mechanism for realising axial movements of the pin devices when the outer portion is rotated and the housing means non-rotatably rest in the base unit. 
   
   
       6 . The apparatus as claimed in  claim 5 , wherein the outer portion, in at least one of the housing means, is connected to an indexing device by means of which the outer portion is stepwise rotatable so that one rotational step corresponds to a change in the projectional position of the pin devices which substantially corresponds to the thickness in the axial direction of one weight disk. 
   
   
       7 . The apparatus as claimed in  claim 6 , wherein at least one of the housing members has a display device which displays how many indexing steps through which the outer portion has been rotated. 
   
   
       8 . The apparatus as claimed in  claim 7 , wherein the indexing device fulfils the function of a locking device for locking the pin devices in their selected projectional positions. 
   
   
       9 . The apparatus as claimed in  claim 2 , wherein the disk locking devices are spring biased towards their radially outer positions and that the weight disks have bevels about their openings. 
   
   
       10 . The apparatus as claimed in  claim 9 , wherein the handle at opposing ends has housing means with engagement means for non-rotational cooperation with the base unit, that the handle has a radially outer portion which is rotatably journalled in the housing means, that the pin devices are disposed interiorly in the outer portion and axially displaceable but non-rotatably guided in each respective housing means, and that there is disposed, in the handle, a screw or worm mechanism for realising axial movements of the pin devices when the outer portion is rotated and the housing means non-rotatably rest in the base unit. 
   
   
       11 . The apparatus as claimed in  claim 5 , wherein the outer portion, in at least one of the housing means, is connected to an indexing device by means of which the outer portion is stepwise rotatable so that one rotational step corresponds to a change in the projectional position of the pin devices which substantially corresponds to the thickness in the axial direction of one weight disk. 
   
   
       12 . The apparatus as claimed in  claim 6 , wherein at least one of the housing members has a display device which displays how many indexing steps through which the outer portion has been rotated. 
   
   
       13 . The apparatus as claimed in  claim 7 , wherein the indexing device fulfils the function of a locking device for locking the pin devices in their selected projectional positions. 
   
   
       14 . The apparatus as claimed in  claim 1 , wherein the handle at opposing ends has housing means with engagement means for non-rotational cooperation with the base unit, that the handle has a radially outer portion which is rotatably journalled in the housing means, that the pin devices are disposed interiorly in the outer portion and axially displaceable but non-rotatably guided in each respective housing means, and that there is disposed, in the handle, a screw or worm mechanism for realising axial movements of the pin devices when the outer portion is rotated and the housing means non-rotatably rest in the base unit. 
   
   
       15 . The apparatus as claimed in  claim 14 , wherein the outer portion, in at least one of the housing means, is connected to an indexing device by means of which the outer portion is stepwise rotatable so that one rotational step corresponds to a change in the projectional position of the pin devices which substantially corresponds to the thickness in the axial direction of one weight disk. 
   
   
       16 . The apparatus as claimed in  claim 15 , wherein at least one of the housing members has a display device which displays how many indexing steps through which the outer portion has been rotated. 
   
   
       17 . The apparatus as claimed in  claim 16 , wherein the indexing device fulfils the function of a locking device for locking the pin devices in their selected projectional positions. 
   
   
       18 . The apparatus as claimed in  claim 2 , wherein the handle at opposing ends has housing means with engagement means for non-rotational cooperation with the base unit, that the handle has a radially outer portion which is rotatably journalled in the housing means, that the pin devices are disposed interiorly in the outer portion and axially displaceable but non-rotatably guided in each respective housing means, and that there is disposed, in the handle, a screw or worm mechanism for realising axial movements of the pin devices when the outer portion is rotated and the housing means non-rotatably rest in the base unit. 
   
   
       19 . The apparatus as claimed in  claim 18 , wherein the outer portion, in at least one of the housing means, is connected to an indexing device by means of which the outer portion is stepwise rotatable so that one rotational step corresponds to a change in the projectional position of the pin devices which substantially corresponds to the thickness in the axial direction of one weight disk. 
   
   
       20 . The apparatus as claimed in  claim 19 , wherein at least one of the housing members has a display device which displays how many indexing steps through which the outer portion has been rotated.