Aperture forming device

Abstract

Disclosed is a device for forming apertures in cement or similar hardenable, plastic materials. The device, intended for use where holes of several inches in length are desired, comprises a body portion having affixed therein a threaded nut or coil. The body portion may be, for example, cylindrical in shape and be a solid elastomeric material having an aperture which extends axially through the body portion and communicates with a nut. The nut should be located adjacent the topmost portion of the body portion. A threaded rod may be inserted in the body aperture and screwed into the nut. A U-shaped bracket is provided which is placed on the hardened cement with the legs of the U-shape disposed on either side of body member. The joining member (which completes the U-shape) is spaced above and from the body portion by the legs. The joining member has a slot for receiving the bolt. The device is removed by threading a nut on the bolt down upon the joining member of the bracket. As the nut is turned, the rod is lifted. The lifting of the rod exerts pressure on the nut within the body member which then resiliently elongates the body portion and removes it from the cement.

What is claimed is:  .[.1. Aperture forming means of the type intended to be disposed within a hardenable plastic material while said material is in a substantially fluid state and, upon said material becoming substantially rigid, said forming means being removable from said material to thereby form therewithin said aperture, said aperture forming means comprising: 
     
        therein said body portion within the plastic material..]. 2. Aperture forming means as recited in claim .[.1.]. .Iadd.4.Iaddend., wherein said locating means further comprises flange means for securing to the form and having upstanding support means extending therefrom to retain therein said 
     
     
        body portion in a predetermined position. 3. Aperture forming means as recited in claim 2, wherein said body portion is substantially cylindrical, said locating means comprises a top-hat configuration such that said flange means is a radially extending brim, said upstanding support means is a substantially cylindrically-shaped crown open at the top to receive therein said cylindrical body portion; said crown extending a fraction of the axial length of said body portion. .Iadd. 4. Aperture forming means of the type intended to be disposed within a hardenable plastic material while said material is in a substantially fluid state and, upon said material becoming substantially rigid, said material being of the type disposed upon or in a form, said forming means being removable from said material to thereby form therewithin said aperture, said aperture forming means comprising: (a) an elastomeric body portion having top and bottom portions, the top portion being intended to be disposed adjacent to and accessible through the exposed surface of the plastic material wherein said body portion is a substantially geometric solid, in which the end defining said top portion is at least as large as or larger than said bottom portion;   (b) a substantially rigid member secured within and engaging said body portion and spaced from said top portion;   (c) means for grasping said rigid member; said grasping means extending from within and without said body portion for engaging said rigid member and for deforming said body portion so as to remove said body portion and said rigid member from the hardened plastic material; and   (d) locating means to thereby located said body portion within said plastic material; said locating means receiving therein said body portion and being securable to the form. .Iaddend. .Iadd. 5. Aperture forming means of the type intended to be disposed within a hardenable plastic material while said material is in a substantially fluid state and, upon said material becoming substantially rigid, said material being of the type disposed upon or in a form; said forming means being removable from said material to thereby form therewithin said aperture, said aperture forming means comprising:   (a) an elastomeric body portion having top and bottom portions, the top portion being intended to be disposed adjacent to and accessible through the exposed surface of the plastic material within said body portion is a substantially geometric solid, in which the end defining said top portion is at least as large as or larger than said bottom portion;   (b) a substantially rigid member secured within and engaging said body portion and spaced from said top portion;   (c) means for grasping said rigid member, said grasping means extending from within and without said body portion for engaging said rigid member and for deforming said body portion so as to remove said body portion and said rigid member from the hardened plastic material; and   (d) locating means to thereby locate said body portion within the plastic material; said locating means being securable to the form and engaging said grasping means; said locating means comprises a bracket having slots therein for selectively engaging said grasping means. .Iaddend. .Iadd. 6. Aperture forming means of the type intended to be disposed within a hardenable plastic material while said material is in a substantially fluid state and, upon said material becoming substantially rigid, said material being of the type disposed upon or in a form, said forming means being removable from said material to thereby form therewithin said aperture, said aperture forming means comprising:   (a) an elastomeric body portion having top and bottom portions and an aperture, the top portion being intended to be disposed adjacent to and accessible through the exposed surface of the plastic material wherein said body portion is a substantially geometric solid, in which the end defining said top portion is at least as large as or larger than said bottom portion;   (b) a substantially rigid member secured within and engaging said body portion and space from said top portion; said rigid member comprises an internally threaded nut;   (c) locating means to thereby locate said body portion within the plastic material; said locating means comprises a bracket; and   (d) means for grasping said rigid member, said grasping means extending from within and without said body portion for engaging said rigid member and for deforming said body portion so as to remove said body portion and said rigid member from the hardened plastic material; said means for grasping comprises a threaded member insertable within said aperture for engaging said nut and exterior nut means threaded upon said threaded member and against said bracket; said bracket being upon the exterior portion of the rigid plastic material such that, upon tightening down upon said bracket by said exterior nut means, said threaded member pulls upon said secured nut to thereby remove said body portion from said hardened plastic material. .Iaddend. .Iadd. 7. Aperture forming means as recited in claim 6, wherein said bracket is a substantially U-shaped planar member; the base, which joins the arms of said U-shaped member, having at least one opening therewithin to engage the threaded member; said bracket arms with laterally extending free ends for resting securely upon rigid plastic material. .Iaddend. .Iadd. 8. Aperture forming means as recited in claim 7, wherein said body portion comprises a substantially cylindrical member, said body portion aperture being axially disposed, said nut being embedded within said body portion and having the aperture thereof in registry with said body portion aperture, said threaded member comprising a threaded bolt of the type having a bolt head at one end, said body portion being tapered along the length thereof, such that the largest diameter thereof is disposed at said top portion. .Iaddend. .Iadd. 9. Aperture forming means of the type intended to be disposed within a hardenable plastic material while said material is in a substantially fluid state and, upon said material becoming substantially rigid, said material being of the type disposed upon or in a form, said forming means being removable from said material to thereby form therewithin said aperture, said aperture forming means comprising:   (a) an elastomeric body portion having top and bottom portions and an aperture, the top portion being intended to be disposed adjacent to and accessible through the exposed surface of the plastic material wherein said body portion is a substantially geometric solid, in which the end defining said top portion is at least as large as or larger than said bottom portion;   (b) a substantially rigid member secured within and engaging said body portion and spaced from said top portion; said rigid member comprises an internally threaded nut;   (c) means for grasping said rigid member, said grasping means extending from within and without said body portion for engaging said rigid member and for deforming said body portion so as to remove said body portion and said rigid member from the hardened plastic material, said grasping means comprises a threaded member insertable within said aperture for engaging said nut; and   (d) locating means to thereby locate said body portion within the plastic material, said locating means comprises a bracket having slots therein for selectively engaging said grasping means. .Iaddend. .Iadd. 10. Aperture forming means of the type intended to be disposed within a hardenable plastic material while said material is in a substantially fluid state and, upon said material becoming substantially rigid, said material being of the type disposed upon or in a form, said forming means being removable from said material to thereby form therewithin said aperture, said aperture forming means comprising:   (a) an elastomeric body portion having top and bottom portions, the top portions being intended to be disposed adjacent to and accessible through the exposed surface of the plastic material wherein said body portion is a substantially geometric solid, in which the end defining said top portion is at least as large as or larger than said bottom portion;   (b) a substantially rigid member secured within and engaging said body portion and spaced from said top portion;   (c) means for grasping said rigid member, said grasping means extending from within and without said body portion for engaging said rigid member and for deforming said body portion so as to remove said body portion and said rigid member from the hardened plastic material; said grasping means comprises a substantially rod-like member extending from within and without said body portion, said rigid member comprises a head member integrally formed at one end of said rod-like member and extending radially from said rod-like member; and   (d) locating means to thereby locate said body portion within the plastic material, and a bracket and nut means wherein said rod-like member comprises a threaded portion, said bracket engages said threaded portion, said nut means being upon said rod-like member for tightening down upon said threaded portion and against said bracket; said bracket being intended to engage the hardened plastic material in such a manner that said nut means upon being rotated upon said threaded portion pulls against said head member and body portion so as to thereby deform said elastomer and remove said aperture forming means from the plastic material.