Foot-mounted springboard device for jumping has foot plate connected to shin plate strapped to shoe and fitted with springs for trampoline-type jumping

摘要

The device comprises an extended foot plate (1) of variable length with a longer momentum for strapping on a normal shoe for jumping. A compression spring (5) is placed under the foot plate and a tension spring (3) connects the foot plate to a shin plate (2). Straps (7) hold the device in place.