| 摘要 |
1,190,654. Reciprocating pumps. E. P. SUNDHOLM. Aug. 1, 1967 [Aug. 5, 1966], No.35255/67. Heading F1A. A grease gun in which the outlet 25 is on the same side of the head 21 as the pump piston 29 has a connection between the pump cylinder 28 and the outlet 25 which comprises a bore 51, the outer portion 52 being sealed off from the remainder by a sealing ring carried on a screwed plug 55. |
