Power plants – Pressure fluid source and motor – Having plural energy input means – pumps or diverse pump outlets
Patent
1978-12-26
1980-04-01
Geoghegan, Edgar W.
Power plants
Pressure fluid source and motor
Having plural energy input means, pumps or diverse pump outlets
60DIG10, 418200, F15B 1309
Patent
active
041954807
ABSTRACT:
An improved hydraulic pump structure for hydraulic systems which require a plurality of rotary pumps has a pump casing assembly (20) consisting of a plurality of pump casing elements (23-29) which are fastened together in abutting relationship to define a first pump cavity (54) and a second pump cavity (55a) with aligned drive shaft holes (56-61) and a drive shaft (62-63) which is journalled in the holes (56-61) and carries a rotary pump member (76-77 or 80-81) in each cavity (54 and 55a). The casing elements (23-29) are manifolded to provide a first fluid inlet passage (82), a first fluid delivery passage (84) which terminates in a port in a fluid delivery end plate (29), a second fluid inlet passage (86) which has an entrance opening (H6) in the fluid delivery end plate (29), and a second fluid outlet passage (87) which terminates in a port in the fluid delivery end plate (29). There may be two subassemblies (21 and 22) with two pumps in each, secured together in face abutting relationship with an axially interengaged driving connection (62a-63a) between drive shaft segments (62 and 63) in the two subassemblies (21 and 22) and with fluid delivery passages (83 and 84) extending from one assembly through the other.
REFERENCES:
patent: 2751846 (1956-06-01), Lapsley
patent: 3101673 (1963-08-01), Clark et al.
patent: 3314369 (1967-04-01), Yonei et al.
Behrends Bertwin E.
Shelby Robert L.
Caterpillar Tractor Co.
Geoghegan Edgar W.
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