Rotary expansible chamber devices – With changeable working chamber magnitude
Patent
1977-05-05
1979-12-04
Vrablik, John J.
Rotary expansible chamber devices
With changeable working chamber magnitude
418173, 418270, 308 9, F01C 100, F01C 2116, F16C 3500, F16C 3504
Patent
active
041770242
ABSTRACT:
A pneumatically operated vane-type motor for driving medical or dental handpieces. A housing forms a rotor chamber in which a rotor is mounted, the rotor having axial slots in which radially moveable vanes are housed. An adjustment ring is positioned between the inner surface of the housing and the outer ends of the vanes, and is moveable to adjust the speed and torque characteristics of the rotor without requiring adjustment in the compressed air supply. To this end, the adjustment ring has a cylindrical outer surface engaging the inner surface of the housing, and a cylindrical inner surface towards which the vanes extend. The axes of the inner and outer surfaces of the adjustment ring are spaced-apart.
REFERENCES:
patent: 860628 (1907-07-01), Boone
patent: 953539 (1910-03-01), Mendizabal
patent: 2302411 (1942-11-01), Behrens
patent: 2324903 (1943-07-01), Beckman
patent: 2575524 (1951-11-01), Mitchell
patent: 2590729 (1952-03-01), Scognamillo
patent: 2612110 (1952-09-01), Delegard
patent: 2777543 (1957-01-01), O'Connor
patent: 3210848 (1965-10-01), Bizzigotti
patent: 3306375 (1967-02-01), Macks
patent: 3539281 (1970-11-01), Kramer
Kaltenbach & Voigt GmbH & Co.
Vrablik John J.
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