Shock absorber crutch and shock absorber kit

Details Shock absorber crutch and shock absorber kit Shock absorber crutch and shock absorber kit

2008-07-08

2008-07-08

Dunn, David R (Department: 3636)

Tent, canopy, umbrella, or cane

Canes, sticks, crutches, and walking aids

Tips

C135S068000

Reexamination Certificate

active

11447015

ABSTRACT:
A shock absorber conversion kit, for a crutch of the type having a tubular main body and an extension member secured to and fitting within the main body, the kit having a first abutment attachable to the main body, a second abutment attachable to the extension member, a resilient device which can be positioned between the first abutment and second abutment, so that pressure on the main body will cause telescoping movement of the extension member into the main body and will stress the resilient device, and release of pressure will permit movement of the extension member out of the main body and will relax such stress. Also disclosed is a shock absorber crutch in which an extension member is slidable into and out of a main body, and is controlled by a resilient action.

REFERENCES:
patent: 1336844 (1920-04-01), Klousnitzer
patent: 1548889 (1925-08-01), King
patent: 2449509 (1948-09-01), Richards
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patent: 3701544 (1972-10-01), Stankovich
patent: 3715000 (1973-02-01), Ottoway
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patent: 5722645 (1998-03-01), Reitter
patent: 6286529 (2001-09-01), Olivera
patent: 6816745 (2004-11-01), Brand et al.
patent: 2004/0025923 (2004-02-01), Garza et al.
patent: 2007/0023072 (2007-02-01), Agnello et al.

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