Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Tips
Patent
1998-11-10
2000-10-31
Canfield, Robert
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Tips
135 68, 135 77, 135 84, 135 86, A45B 904
Patent
active
061386995
ABSTRACT:
An anti-slip base for a crutch including a frustro-conical body having a recess at a bottom end thereof, a ball-shaped housing arranged on a top end of the frustro-conical body, a raised camber formed inside the recess with an anti-slip surface thereon, an outlet passage extending between the ball-shaped housing and the anti-slip surface on the raised camber, and a plurality of radial slots formed in a bottom face of the body.
REFERENCES:
patent: 2910995 (1959-11-01), Jacuzzi
patent: 4135536 (1979-01-01), Willis
patent: 4630626 (1986-12-01), Urban
Canfield Robert
Max Health Corporation
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