Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Tips
Patent
1997-02-21
1998-09-22
Wood, Wynn E.
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Tips
135 82, 135 86, 135 78, 248616, A45B 904
Patent
active
058100385
ABSTRACT:
A medical walker foot includes a shell having a base portion for engaging a floor or the ground when weight is applied to the walker and a sleeve portion for receiving the lower end of the medical walker leg. A biasing member is disposed within the shell for biasing a tip member into an extended position, disengaging the base portion from the ground, and allowing the tip member to glide along the ground when weight is removed from the walker. The biasing member provides a substantially uniform pressure throughout its full stroke and may comprise a cup-like urethane cushion or a coil spring. The base portion of the shell includes a wiper seal which extends radially into the opening in the base portion to form a watertight seal with the stem of the tip member.
REFERENCES:
patent: 404303 (1889-05-01), Remillard
patent: 619235 (1899-02-01), Schwarting
patent: 1273939 (1918-07-01), Sidel
patent: 1314193 (1919-08-01), Hipwood
patent: 1548889 (1925-08-01), King
patent: 2371246 (1945-03-01), McGrory et al.
patent: 3814357 (1974-06-01), Rontgen
patent: 3901258 (1975-08-01), Montgomery
patent: 4630626 (1986-12-01), Urban
patent: 4977914 (1990-12-01), Smerker
patent: 5156451 (1992-10-01), Pollock
Carpin Manufacturing, Inc.
Wood Wynn E.
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