Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Patent
1975-03-10
1976-04-13
Schroeder, Werner H.
Tent, canopy, umbrella, or cane
Umbrella
Self-opening and closing
135 55, A45B 904
Patent
active
039497739
ABSTRACT:
A convertible tip for a crutch and the like having a pole and an elastomeric cup-shaped member disposed on the end of the pole for contacting the ground, and a cleat member attachable to the cup-shaped member, by means of a releasable fastener, and another cup-shaped member for covering the cleat, so that the tip is convertible between the arrangement of exposing the cleat, for supporting on ice or the like, and covering the cleat, for supporting on a floor.
REFERENCES:
patent: 619235 (1899-02-01), Schwarting
patent: 2116941 (1938-05-01), Francis
Berman Conrad L.
Hansmann Arthur J.
Schroeder Werner H.
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