Expansible chamber devices – Displacement control of plural cylinders arranged in... – Parallel cylinders
Patent
1986-05-06
1989-01-31
Freeh, William L.
Expansible chamber devices
Displacement control of plural cylinders arranged in...
Parallel cylinders
92248, 92249, 92258, 417269, F04B 128, F16J 928, F16J 700, F16J 114
Patent
active
048008010
ABSTRACT:
A swash plate pump includes a housing and cylinders arranged in a circular pattern around the drive shaft. Piston rods are pivotally connected at one end to the swash plate and mechanism surrounding the drive shaft and axially slidable along it controls the angle of the swash plate. The opposite end of each piston rods is fixed to a piston. In one embodiment, each piston rod is locally reduced in cross-sectional area adjacent its piston to compensate for disparity in arcuate motions of the opposite ends of the piston rod and in another embodiment, the cylinders are mounted in ball joints in the housing to compensate the disparity. One end of the housing may be formed as a manifold and double seals are provided between the compression side and the drive side of the pump.
REFERENCES:
patent: 2146231 (1939-02-01), Logan
patent: 3292554 (1966-12-01), Hessler
patent: 3828657 (1974-08-01), Neumann
patent: 4004499 (1977-01-01), Beck
patent: 4077269 (1978-03-01), Hodgkinson
patent: 4188859 (1980-02-01), Van Wagenen
patent: 4197787 (1980-04-01), Schneider
patent: 4342544 (1982-08-01), Pere
patent: 4433596 (1984-02-01), Scalzo
patent: 4491057 (1985-01-01), Ziegler
patent: 4545732 (1985-10-01), Oberdorfer
Freeh William L.
Multinorm B.V.
Snyder John P.
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