초록 ▼

Apparatus as an aid while performing bent knee sit-ups, comprising, in combination a strap of material adapted to extend and be positioned over the ankles of a person doing bent knee sit-ups, when in a deployed orientation, but adapted to be rolled up when in a storage orientation; a pair of assembl

Apparatus as an aid while performing bent knee sit-ups, comprising, in combination a strap of material adapted to extend and be positioned over the ankles of a person doing bent knee sit-ups, when in a deployed orientation, but adapted to be rolled up when in a storage orientation; a pair of assemblies, each assembly having a hollow base in a rectangular configuration with a slot within the upper surface for the passage of one end of the strap, each base having a circular hole for the passage of a fixed plug, each base having a cylindrical tube rotatively secured around the plug with a spring secured at one end of the plug and secured at the other end to the interior of the tube, and with one end of the strap secured to the exterior surface of the tube wherein the ends of the strap may be coiled about the tube when the spring is released and the assemblies in close proximity to each other when in a storage orientation, but wherein the assemblies may be spread apart to extend the strap to the deployed orientation with the springs in a tension state; and securement means adapted to secure the assemblies to a surface.

대표청구항 ▼

A new and improved apparatus as an aid while performing bent knee sit-ups, comprising, in combination: a strap of flexible material adapted to extend and be positioned over the ankles of a person doing bent knee sit-ups, when in a deployed orientation, but adapted to be rolled up when in a storage o

A new and improved apparatus as an aid while performing bent knee sit-ups, comprising, in combination: a strap of flexible material adapted to extend and be positioned over the ankles of a person doing bent knee sit-ups, when in a deployed orientation, but adapted to be rolled up when in a storage orientation; a pair of assemblies, each assembly having a hollow base in a rectangular configuration with a slot within the upper surface for the passage of one end of the strap, each base having a circular hole for the passage of a fixed plug, each base having a cylindrical tube rotatively secured around the plug with a coil spring secured at one end of the plug and secured at the other end to the interior of the tube, and with one end of the strap secured to the exterior surface of the tube wherein the ends of the strap may be coiled about the tube when the coil spring is released and the assemblies are in close proximity to each other when in a storage orientation, but wherein the assemblies may be spread apart to extend the strap to the deployed orientation with the springs coiled in a tension state; and suction cups secured to the faces of the bases opposite from the slots to secure the bases in a fixed position and the coil springs in tension with the strap extended for operation and use.