Twin-wheel castor

Details Twin-wheel castor Twin-wheel castor

1985-09-06

1987-11-17

Crosby, Gene P.

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

Casters

Wheels

B60B 3300

Patent

active

047063297

ABSTRACT:
A castor comprises a moulded plastics body (1) having a socket for a swivel pin and a center wall (6) with an aperture of which the edge is formed as the outer ball track (9) of a ball bearing. Two moulded plastics wheels (2) have hollow hub portions (11) extending towards the center wall and shaped to co-operate to provide the inner ball track (17) of the ball bearing.

REFERENCES:
patent: 285491 (1883-09-01), Keller
patent: 1153838 (1915-09-01), Bower
patent: 3894310 (1975-07-01), Screen
patent: 4067083 (1978-01-01), Greene
patent: 4404707 (1983-09-01), Walker

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