| 摘要 |
1488542 Seals TRW Inc 25 July 1975 [1 Aug 1974] 31190/75 Heading F2B The interior of a sealing boot 23<SP>1</SP> is protected from the ingress of airborne contaminants and the escape of lubricant, by a filter plug 29 of sintered metal, especially bronze. The plug may be sealed in a hollow nipple 35 of the rack tube 13<SP>1</SP> of a vehicle steering gear or in the elastomeric material of the boot itself. |
