Cable crossover exercise apparatus |
| It is, therefore, an object of the present invention to provide an exercise apparatus including a ... |
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Sheet transfer apparatus |
| The present invention is directed to an improvement in a sheet transfer apparatus. The apparatus ... |
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Sheet presenting assembly |
| In accordance with the present invention, a sheet presenting assembly comprises a rotatable sheet ... |
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Fitness bar |
| A large number of exercise devices have been used to facilitate physical exercise. Many of such ... |
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Liquid filled dumbbell |
| It is a primary object of the present invention to provide means to progressively stretch the ... |
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Exercise bar |
| What is claimed is: 1. An exercise bar, including: a cylindrical center piece including threads at ... |
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Leveraged weight compounding system |
| The present invention relates to an exercise/physical therapy device incorporating the use of a ... |
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Portable arm and leg exerciser |
| The present invention is an exercise device having a base with three holes, spaced closely. An ... |
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Varying force resisting type exercising device |
| The apparatus of the present invention provides a unique structure upon which exercises can be ... |
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Exercise apparatus with relatively rotatable arms |
| OF THE PREFERRED EMBODIMENTS The exercise apparatus shown in FIG. 1 comprises arm assemblies 1, 2 ... |
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Framework of rods configurable into a variety of shapes
| Details |
Inventors: Erikson, Ted A.;
Assignee:
Primary Examiner: Oechsle; Anton O.
Assistant Examiner:
Attorney, Agent or Firm: Wood, Dalton, Phillips, Mason & Rowe
A three-dimensional structure defines space in the form of a tetrahedron as the simplest of the five Platonic solids with junction restraints at each of four vertices that allow lineation of size and angulation of shape and form by flexure and frictional slippage, respectively. This structure has use as an educational toy, puzzle, or game; in miniature as jewelry and pendants or support for variable requirements of easels or tables or display racks. |
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DETAILED DESCRIPTION USING FIGURES FIG. 1 shows an assembly of one embodiment of connecting six edges, herein designated as control rods of any fixed length and identified by numbers, with junction restraints of any flexible material which allows the junction to angulate, by flexure, and lineate, by appropriate frictional slippage, any stresses that are imposed. Appropriately selected O-rings are one suitable restraint, but other means have been used. FIG. 2 shows one structure that forms by angulation and lineation of the assembly. The six edges identify an internal space in three dimensions, as well as suggest an external space as identified by four combinations of three edges. The figure shows junction combinations of 1-2-3, 1-4-6, 2-4-5, and 3-5-6, which outline a tetrahedron. FIG. 4 is a photograph that shows ten combinations of lineation and angulation from assemblies such as FIG. 1. In addition, it shows three exhibits of tetrahedral structures in miniature, but use as pendant or other jewelry, designated as A. Further, it exhibits another use as a support structure, namely an easel, designated as B. FIG. 3 exhibits variation in size from A (miniature as earrings), through B, C, as intermediate to size D, used as a display rack.
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