Motors: expansible chamber type – Three or more cylinders arranged in parallel radial or... – Radially disposed cylinders
Patent
1976-12-16
1978-12-05
Freeh, William L.
Motors: expansible chamber type
Three or more cylinders arranged in parallel radial or...
Radially disposed cylinders
F01B 1306
Patent
active
041280482
ABSTRACT:
A radial piston type hydraulic pump-motor comprises a cylinder block formed with a plurality of radial cylinders circumferentially equally spaced and each opened at its radially outer end; a plurality of piston assemblies each radially slidably accommodated in each of the radial cylinders of the cylinder block to provide a cylinder chamber defined by the radial cylinder and the piston assembly; a plurality of inlet-outlet passages formed in the cylinder block, each having one end opened at the cylinder chamber defined when the piston assembly is moved to the radially inward stroke end and the other end opened at side face of the cylinder block radially outwardly of the one end; a housing accommodating therein the cylinder block and the piston assemblies and having a radially inner face held in contact with the radially outer ends of the piston assemblies; at least an introducing passage partially formed in the housing and including a main introducing passage having one end exteriorly opened and a plurality of branch introducing passages having one ends opened in communication with the other end of the main introducing passage and the other ends opened circumferentially equally spaced and communicatable with the other ends of the inlet-outlet passages; at least a discharge passage partially formed in the housing and including a main discharge passage having one end exteriorly opened and a plurality of branch discharge passages, having one ends opened in communication with the other end of the main discharge passage and the other ends opened circumferentially equally spaced and communicatable with the other ends of the inlet-outlet passages in alternative relation with the other ends of the branch introducing passages; and a shaft connected rotatably with the housing and coupled with the cylinder block.
REFERENCES:
patent: 2712794 (1955-07-01), Humphreys
patent: 3046950 (1962-07-01), Smith
patent: 3090361 (1963-05-01), Orshansky
patent: 3151529 (1964-10-01), Leath
patent: 3155010 (1964-11-01), Johnson et al.
patent: 3796136 (1974-03-01), Ogunl
patent: 3895565 (1975-07-01), Schottler
Freeh William L.
Teijin Seiki Company Limited
LandOfFree
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