Motors: expansible chamber type – Three or more cylinders arranged in parallel radial or... – Motive fluid bypass to or from assembly
Patent
1985-09-30
1987-07-21
Croyle, Carlton R.
Motors: expansible chamber type
Three or more cylinders arranged in parallel radial or...
Motive fluid bypass to or from assembly
F01B 1306
Patent
active
046810234
ABSTRACT:
On piston shoes in radial piston pumps, motors and engines the radial load which is excerted by the pressure under the piston onto the piston shoe is to a high rate borne by hydrostatic bearings between the piston shoe and the inner guide face of the piston stroke actuator ring. At high revolutions per given time the centrifugal forces appearing from the masses of piston and shoe increase drastically which results therein, that the bearing capacity of the hydrostatic bearing fails to bear the increased load. The invention gives rules how additional hydrodynamic bearing portions can become provided on the outer portions of the piston shoes, whereby those portions will carry an additional load by hydrodynamic actions. Since the bearing capacity of such bearing portions increases with increase of the rotary speed of the device, the applicable range of revolutions per minute can be increased by the application of the invention.
REFERENCES:
patent: 3793923 (1974-02-01), Smith
patent: 3948149 (1976-04-01), Fricke
patent: 4212230 (1980-07-01), Eickmann
patent: 4258548 (1981-03-01), Hall
patent: 4420986 (1983-12-01), Nakayama
Croyle Carlton R.
Neils Paul F.
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