Crutch

Details Crutch Crutch

1996-03-29

1997-02-25

Mai, Lanna

Tent, canopy, umbrella, or cane

Canes, sticks, crutches, and walking aids

Crutches

135 69, 135 72, A61H 302

Patent

active

056051700

ABSTRACT:
A crutch comprises a pad enclosing an arm piece, two bow rods connecting the hollow arm piece longitudinally, a handpiece connecting two bow rods transversely, a pipe clamped by the lower portions of two bow rods, an extensible rod inserted beneath the pipe, a tip cushion covering the lower end of the extensible rod, and a mount confining the lower ends of the pipe and two bow rods. A plug is disposed on the upper end of the pipe. The pipe has a plurality of adjusting holes.

REFERENCES:
patent: 3730198 (1973-05-01), Johnston et al.
patent: 4637414 (1987-01-01), Urban
patent: 4865065 (1989-09-01), Chen
patent: 5197502 (1993-03-01), Wang
patent: 5341829 (1994-08-01), Hsiao et al.
patent: 5351701 (1994-10-01), Hsiao
patent: 5402811 (1995-04-01), Weng
patent: 5445175 (1995-08-01), Cho

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