Hydraulic motor

Details Hydraulic motor Hydraulic motor

1978-04-03

1980-09-23

Freeh, William L.

Motors: expansible chamber type

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

Cylinders parallel to rotation axis

91499, F01B 1304

Patent

active

042235944

ABSTRACT:
A hydraulic motor having a plurality of cylindrical pistons each of which is slidably mounted in a fluid tight manner along a respective cylindrical bore provided axially through a rotor keyed to a central rotatable shaft, each said piston being thrusted by a pressurized fluid with one end into contact with a flat surface of a toroidal member mounted to rotate about its own axis which is arranged at an angle to the axis of said central shaft, and rotation of said rotor causing each said piston to rotate about its own axis within the respective bore owing to said one end of each piston being shaped as a spherical bowl, the diameter of which is at least 0.7 times the radius of the respective piston divided by the sine of said angle.

REFERENCES:
patent: 1539616 (1925-05-01), Williams
patent: 2069651 (1937-02-01), Ferris
patent: 2237430 (1941-04-01), Higgins
patent: 2445281 (1948-07-01), Rystrom
patent: 2452754 (1948-11-01), Herrstrum
patent: 2520632 (1950-08-01), Greenhut
patent: 3256782 (1966-06-01), Ebert

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