초록 ▼

A walker is designed for use on level and inclined surfaces and for ascending and descending stairs. The walker is a free standing support having a pair of front legs and a pair of rear legs and two horizontally disposed handles. The front legs are lengthened or shortened relative to the rear legs t

A walker is designed for use on level and inclined surfaces and for ascending and descending stairs. The walker is a free standing support having a pair of front legs and a pair of rear legs and two horizontally disposed handles. The front legs are lengthened or shortened relative to the rear legs through hand actuated controls located on each handle. The leg adjusting mechanism is a rack mounted on each front leg in releasable engagement with a frame-mounted gear which holds the leg at a fixed length. The hand controls act to disengage and reengage the gears and the racks to permit the front legs to either extend or retract as follows: with the racks and gears disengaged, the front legs will extend under the force of gravity until stopped at the desired length by a surface such as a stair, or the front legs may be retracted by pushing the front legs against a firm surface such as a stair until the legs are at the desired length, whereupon the control reengages the gear and rack to fix the front legs at the desired length.

대표청구항 ▼

In a walker consisting of a four-sided frame having a front side, a back side, a right side and a left side, said walker having right and left handles and pairs of front and rear legs, said front legs being capable of extending and retracting relative to said frame, an improved apparatus for control

In a walker consisting of a four-sided frame having a front side, a back side, a right side and a left side, said walker having right and left handles and pairs of front and rear legs, said front legs being capable of extending and retracting relative to said frame, an improved apparatus for controlling the extensions and retractions of said front legs comprising: a pair of front legs, each leg having a frame leg part and an adjustable leg part that telescopes relative to said frame leg part; a gear mounted on and co-planar with said frame leg part for engaging said adjustable leg part and holding said adjustable leg part in a fixed position relative to said frame; a rack mounted on and co-planar with said adjustable leg part for engaging said gear and holding said adjustable leg part in a fixed position relative to said frame; hand operated control means positioned on each handle for disengaging said gear and rack, whereby said adjustable leg part will move relative to said frame; and stop means on said frame leg part and said adjustable leg part for limiting the maximum extension and retraction of said adjustable leg part relative to said frame.