Oil infeed device for an adjustable pitch propeller

Details Oil infeed device for an adjustable pitch propeller Oil infeed device for an adjustable pitch propeller

1983-04-04

1986-01-14

Look, Edward K.

Expansible chamber devices

Fluid conduit in constant communication with relatively...

416157R, 277 58, B63H 304, B63H 308

Patent

active

045639400

ABSTRACT:
On an intermediate shaft connected to a propeller shaft there are supported a stationary housing and a distributor or separator ring structure limiting two annular passages in the housing which can be selectively impinged with pressurized oil. The annular passages are connected to two oppositely effective working spaces of a servo motor of the adjustable pitch propeller by control passages extending through the intermediate shaft and the propeller shaft. The separator or distributor ring structure comprises axial sections, each of which is formed of one part in circumferential direction and is fixedly connected in axial direction to an axial section thereof associated with the same annular passage by web or bridging members bendable in radial direction. Each axial section is sealingly guided in a cylindrical bore of the housing by a respective sealing ledge protruding from the outer circumferential face thereof. Such arrangement permits elastic deformations of the axial sections in the sense of constricting bearing gaps or clearances formed with the intermediate shaft. Thus, the sealing action thereof is improved. Also, the parts of the housing surrounding the intermediate shaft thus can be formed of one-piece in circumferential direction, thereby requiring only modest machining and assembly work.

REFERENCES:
patent: 2630136 (1953-03-01), Brandes et al.
patent: 2781856 (1957-02-01), Danvers et al.
patent: 4456217 (1984-06-01), Winegart et al.

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