Pistons, piston shoes and rotors in pumps and motors

Details Pistons, piston shoes and rotors in pumps and motors Pistons, piston shoes and rotors in pumps and motors

1984-04-23

1987-01-13

Croyle, Carlton R.

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Motive fluid bypass to or from assembly

92 58, F01B 1306

Patent

active

046355340

ABSTRACT:
In radial piston pumps and motors the dimensions of the rotor, pistons and piston shoes are optimized for best efficiency and power in a given size and weight. The efficiency and reliability of the piston shoes is improved by the provision of fluid pressure pockets in the outer face of the piston shoe which have cross-sectional areas exceeding the cross-sectional area of the piston whereon the piston shoe is pivotably borne. Welding of the outer face of the piston shoe is prevented and the devices are able to operate with higher pressures and rotary velocities.

REFERENCES:
patent: 1924124 (1933-08-01), Kuzelewski
patent: 1930163 (1933-10-01), Ferris
patent: 2386459 (1945-10-01), Hautzenroeder
patent: 2621607 (1952-12-01), Trapp
patent: 3063380 (1962-11-01), Strickland
patent: 3570372 (1971-03-01), Campbell
patent: 3750533 (1973-08-01), Thoma
patent: 3885457 (1975-05-01), Bosch

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