B - Operations – Transporting – 60 – B
Patent
B - Operations, Transporting
60
B
16/8
B60B 33/08 (2006.01)
Patent
CA 1099863
ABSTRACT A castor comprising a socket member defined by a base portion and a cup portion extending from the base portion, the base portion being adapted to be affixed to the underside of an article, and the cup portion defining a generally dome- shaped cavity therein. A ball is engaged in the cavity in a manner to be freely rotatable in any direction in the cavity. The cup portion has three or more rollers rotatably mounted to the wall of the cavity and supports the ball for rotatable movement within the cavity, the rollers being supported on bearings which in turn are supported on inwardly projecting lugs integral with the cavity walls. An annular rim defines an open end of the cavity, through which a portion of the ball outwardly projects, and a plurality of lugs are arranged circumferentially within the cavity adjacent the annular rim, the lugs projecting inwardly to engage the surface of the ball, to maintain the ball within the cavity but being resiliently yieldable to permit the ball to be mounted in or removed from the cavity by forcing the ball past the lugs. - 1 -
279992
Fuller Colin A.
Kegg Geoffrey E.
Kegg Jack P.
Fetherstonhaugh & Co.
Fuller Colin A.
Kegg Geoffrey E.
Kegg Jack P.
LandOfFree
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