Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Patent
1975-04-18
1976-08-10
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
64 9R, F01C 102, F03C 300, F16D 318, F04C 102
Patent
active
039738809
ABSTRACT:
Axial, positioning means are provided in a hydraulic device of the gerotor type to prevent failure of splined drive connections. The drive connections for the device includes a star member of the gerotor set which partakes of hypocycloidal movement and has a straight splined, central opening extending therethrough, a journalled input-output shaft hollowed at one end with straight splined teeth formed therein, and a universal main drive shaft having crowned spline teeth at its end portions which are in splined, driving engagement with the star member and input-output shaft respectively.
The positioning means includes an abutment preventing movement of the main drive shaft in a first axial direction and biasing means forcing the drive shaft into contact with the abutment and thus preventing movement of the shaft in the opposite axial direction. In one embodiment of the invention the biasing means comprises a spring assembly. In another embodiment of the invention a hydraulic arrangement provides means for biasing the drive shaft.
REFERENCES:
patent: 3547563 (1970-12-01), Charlson
patent: 3572983 (1971-03-01), McDermott
Eaton Corporation
Vrablik John J.
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