| 摘要 |
1322776 Castors C E M CO Inc 7 Aug 1970 [13 Aug 1969] 38168/70 Heading A4U [Also in Divisions E2 and F2] A sleeve of rolled, resilient, spring sheet material having overlapping longitudinal edges 2a, 2b is forced into a bore 11 in a leg member 12 and the stud 14 of a castor 13 is swivably retained in the sleeve by a projection 8 on the sleeve co-operating with a groove 10 of the stud. |
