Motors: expansible chamber type – Three or more cylinders arranged in parallel radial or... – Control valve seating surface contact maintained by fluid...
Patent
1986-08-22
1987-10-20
Croyle, Carlton R.
Motors: expansible chamber type
Three or more cylinders arranged in parallel radial or...
Control valve seating surface contact maintained by fluid...
91491, 180308, F01B 106
Patent
active
047006137
ABSTRACT:
The invention relates to a hydraulic motor, which comprises a surrounding frame casing; an internal cylinder block with radially arranged cylinders and a stationary axle of the hydraulic motor attached thereto; pistons reciprocating in the cylinders and bearing the inner surface of the frame casing, which surface is formed as a running surface guiding the movement of the pistons; a fluid distributor mounted around the axle to rotate together with the frame casing, for the distribution of the hydraulic fluid into cylinder chambers and away therefrom via openings provided in the cylinder block; and feed and exhaust channels for the hydraulic fluid. The object of the invention is to improve such a hydraulic motor by compensating, without complicated balancing elements, the force caused by the pressurized hydraulic fluid and separating the fluid distributor and the cylinder block. This has been solved according to the invention in such a manner that a ring space is formed between the fluid distributor and the axle, by means of stepped counter surfaces of the axle and the fluid distributor, said ring space being formed in the feed channel for the hydraulic fluid.
REFERENCES:
patent: 3511131 (1970-05-01), Kress
patent: 3693507 (1972-09-01), Kress
patent: 3895565 (1975-07-01), Schoffler
patent: 4009643 (1977-03-01), Thumm
patent: 4136602 (1979-01-01), Lenz
patent: 4171732 (1979-10-01), Pinson
patent: 4326450 (1982-04-01), Bacquie
patent: 4505185 (1985-03-01), Jacobs
patent: 4522110 (1985-06-01), Samuelsson
patent: 4528893 (1985-07-01), Neumann
Croyle Carlton R.
Neils Paul F.
Oy Partek Ab
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