| 摘要 |
1,090,380. Reciprocating pumps. WOMA APPARATEBAU WOLFGANG MAASBERG & CO. G.m.b.H. Aug.18, 1966 [Aug. 19, 1965], No.36958/66. Heading F1A. [Also in Division F2] Coaxial inlet and outlet valve assemblies of a pump include open-ended valve cages 14, 15 supporting the valve springs 12, 13, the assemblies being held in position by springs 21, 22 engaging the cages. |
