Hydraulic motor

Details Hydraulic motor Hydraulic motor

1979-02-13

1980-09-23

Freeh, William L.

Motors: expansible chamber type

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

Separate motive fluid control for each working chamber

91473, F01B 310

Patent

active

042235936

ABSTRACT:
Disclosed is a hydraulic motor with a nutating member. The nutating member mounted for nutation on a spherical surface bearing which in turn is mounted on a casing, has first and second bevel gears on respective end faces thereof, the first bevel gear on one end face being in mesh with a bevel gear rigidly mounted on the casing while the second bevel gear on the other end face being in mesh with a bevel gear carried rigidly by a shaft. A swash plate mounted on the casing for coaxial rotation with the shaft has an inclined end face against which said one end face of the nutating member is made to contact and being pressed thereagainst under the forces of pistons so that the swash plate with the inclined end face is caused to rotate, whereby the nutating member is made to nutate. Such nutation of the nutating member due to extension and retraction of the pistons under hydraulic pressure in a predetermined sequence results in the rotation of the shaft or the casing with respect to each other.

REFERENCES:
patent: 3435774 (1969-04-01), Jarrett
patent: 3675539 (1972-07-01), Zajac
patent: 3808949 (1974-05-01), Mundie et al.
patent: 3862587 (1975-01-01), Zajac et al.

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