| 摘要 |
1,260,125. Making fluid seals. CHARLES WESTON & CO. Ltd. 4 Dec., 1969 [10 Dec., 1968], No. 58517/68. Heading B3A. [Also in Division F2] In an oil seal (see Division F2) comprising a ring 2 of elastomeric material secured to a metal case 1, the case is made by roll forming a metal strip into a complete or nearly complete ring of the required cross-section. The case has a radial flange 1b and an axial web 1a formed on its outer surface with a peripheral groove 1d. |
