Power hip, hack squat and leg exercise sled

A variable positioning mechanism for a weight-supporting device that is slidable on upwardly extending rails that have generally flat uppermost faces, said mechanism comprising:

• a stop having an elongated weight supporting device engaging surface, said stop being fixedly secured to one of said rails and said engagement surface is oriented generally transverse to path of movement of a weight supporting device;
• and
• an elongated adjusting block presenting structure defining a plurality of generally parallel openings therein,
• said openings permit mounting said block on said rail's uppermost face by receiving said stop through one of said openings whereby said block is selectively positionable along said rails uppermost face.

A weight-lifting device comprising:

• a pair of elongated, spaced apart generally parallel, upwardly inclined rails each having a base end;
• an elongated exercise unit operatively coupled adjacent each end thereof to said respective rails, said unit presenting elongated members oriented generally transversely between said rails;
• an elongated, flattened, bench portion;
• means on said unit member for releasably securing said bench portion to said unit member in a generally depending relationship therefrom, and for releasably securing said bench portion between said rail base ends with the longitudinal axis of said bench portion generally disposed in horizontal plane.

An adjustable and movable foot support for use on a weight-supporting device, said foot support comprising:

• a foot support assembly, including
• an elongated first plate presenting an upwardly facing foot-engaging first face;
• an elongated second plate presenting a foot-engaging second face and located adjacent said first plate and with the longitudinal axis of the second plate generally parallel with the longitudinal axis of the first plate, the width of said second plate being greater than the width of said first plate;
• and
• means mounting said second plate in said location and for alternative positioning thereof between a lowered non-use position and a use position, in the use position the second plate is in covering relationship to said first plate and said second face is in an upwardly facing feet-engaging orientation;
• and
• means for coupling said assembly to a beam with the longitudinal axes of said first and second plates being transverse to the path of movement of said support assembly for releasably securing the assembly to support beam at any one of a number of spaced positions along the length of a beam.

An exercise weight-supporting frame for supporting a movable weight-supporting:

• a rigid base;
• a weight-supporting assembly means for supporting the support device during the latter's movement on the frame, said assembly means including a pair of elongated, upwardly extending, laterally spaced-apart, generally parallel side frames each having a lower end and an upper end;
• means for securing said lower ends of said side frames to said base;
• and
• means yieldably interconnecting the upper ends of said side frames including
• an elongated cross beam in generally spanning relationship to said side frames and having a pair of opposed ends;
• and
• structure means for coupling said opposed beam ends to corresponding adjacent side frames for permitting limited lateral movement of said side frames relative to said beam during an exercise, said coupling structure means comprising biasing means for restraining movement of said side frames in a direction away from said beam.