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.
申请公布号
DE3531624(C2)
申请公布日期
1994.02.17
申请号
DE19853531624
申请日期
1985.09.05
申请人
COLSON CASTORS (EUROPE) LTD., WEST BROMWICH, WEST MIDLANDS, GB
发明人
SCREEN, STAFFORD THOMAS, WOLLESCOTE,STOURBRIDGE, WEST MIDLANDS, GB