Crutch and a grip unit thereof

Details Crutch and a grip unit thereof Crutch and a grip unit thereof

2010-05-28

2011-12-06

Yip, Winnie (Department: 3636)

Tent, canopy, umbrella, or cane

Canes, sticks, crutches, and walking aids

Crutches

C135S068000, C135S076000, C016S430000

Reexamination Certificate

active

08069869

ABSTRACT:
A crutch has a standing unit, an armpit rest and a grip unit. The standing unit has a top, a foot and multiple positioning holes defined between the top and the foot. The armpit rest is mounted on the top of the standing unit. The grip unit transversally attached to the standing unit has a grip, two positioning bases and two pins. The grip has two ends each having a recess, a pin hole and a limiting portion. Each positioning base has two insertions each having a limiting notch and a hook. When the positioning base engages the recess, the limiting notches combine with the limiting portions and the pin inserts into one corresponding positioning hole. When the positioning base is released from the recess, the limiting notches disengage from the limiting portions, the pin disengages from the positioning hole, and the hook combines with the limiting portion.

REFERENCES:
patent: 705741 (1902-07-01), Drew
patent: 1267008 (1918-05-01), Stansbury
patent: 1296042 (1919-03-01), Braluve
patent: 1446009 (1923-02-01), Glowacki
patent: 2547265 (1951-04-01), Hilgeman
patent: 5291910 (1994-03-01), Bui et al.
patent: 5381813 (1995-01-01), Miric et al.
patent: 6079431 (2000-06-01), Su
patent: 6314977 (2001-11-01), Obitts et al.
patent: 7066676 (2006-06-01), Tsai
patent: 7069940 (2006-07-01), Tsai
patent: 09313554 (1997-12-01), None
patent: 2000237253 (2000-09-01), None

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