Hydraulic cylinder and foot plate positioning device

A hydraulic cylinder and foot plate connecting device for connecting a hydraulic cylinder of a foot training apparatus to a respective foot plate thereon, the device comprising:

• a substantially inverted U-shaped holder plate mounted on said foot plate at the top, said holder plate comprising two polygonal through holes aligned on two opposite vertical side walls thereof, two eyed lugs on a middle transverse wall thereof at the top, to which said hydraulic cylinder is pivoted, and vertically extended downward from said middle transverse wall at the center and inserted in either of a row of longitudinally aligned positioning holes on said foot plate;
• a cam fastened to said holder plate in between said two opposite vertical side walls and disposed below said foot plate, said cam comprising a polygonal hole through the central axis thereof aligned with the two polygonal through holes on said two opposite vertical side walls of said holder plate;
• a T-shaped key comprising a polygonal rod inserted through the two polygonal through holes on said two opposite vertical side walls of said holder plate and the polygonal hole on said cam to connect said cam to said holder plate permitting said holder plate to be firmly retained to said foot plate;
• and
• wherein rotating said T-shaped key in one direction causes said holder plate to be tightened to said foot plate;
• rotating said T-shaped key in the reverse direction causes said holder plate to be loosened from said foot plate.