Shielded castor with spring

Details Shielded castor with spring Shielded castor with spring

1990-03-29

1991-03-26

Seidel, Richard K.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Casters

16 19, 16 32, 16 33, 16 44, B60B 3300, A47B 9100

Patent

active

050018086

ABSTRACT:
A castor, which can efficiently absorb shock and the ball wheel of which can be alternatively received in or protruding beyond a cup-like shield thereof for positioning or moving. The caster comprises a sleeve which is secured to a hoop on the frame of a baby-walker for receiving a spring and a central shaft which comprises a ball wheel on the bottom. The sleeve comprises a Z-shaped track on its wall surface for the sliding and positioning therein of a lateral guide which is inserted therethrough and secured to the central shaft. A cup-like shield is secured to the bottom end of the sleeve to protect the ball wheel.

REFERENCES:
patent: 172013 (1876-01-01), Garretson
patent: 1019302 (1912-03-01), Butcher
patent: 2613389 (1952-10-01), Cramer
patent: 3121556 (1964-02-01), Faulkner

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