More device ideas

I've come with 3 more designs.

Two variants of an automated, motor powered, high tension extender device.

The first variant (ver. 1), houses a lead screw that rotates from a stepper motor that is positioned stationary at the top of the extender. As the lead screw rotates, here's two components that move. Well one only, but it pushes another component above it. The component that moves up/down is a nut that extends over to the other rod and in that other rod, it's encapsulated in a linear ball bearing (not shown in diagram). That way, it smoothly operates. It also has a rectangular opening in the middle where it allows the hook from the crossbar to enter. That crossbar is the second component that gets moved. For example, as the nut is moved up from the motor operating, the crossbar also moves up, and the springs compress, and the hook gets pull, thus creating and applying tension to whatever is hooked on to the hook.

In the second variant (ver. 2), it's the opposite where the motor is not stationary but the lead screw is. The idea is that the motor moves along the lead screw. And it pushes against the crossbar, thus creating tension. The option is there to attach to a secondary bar.

My third design is my original design for the HyperStretcher which is a portable stretcher that is capable of reaching 40lbs in pulling tension. It features the ability to attach a suction cup in the back via a 8mm brass insert. The suction cup will allow you to place it in various positions. In front of you to stretch straight out, behind you for BTC, down for straight down. The device also gives you the option to use a velcro strap and loop it around some slits at the bottom of the device and hook it on to your feet if you can't find any surface to stick the suction cup to.