Lubrication scavenge system

Details Lubrication scavenge system Lubrication scavenge system

1984-07-18

1986-12-23

Vrablik, John J.

Rotary expansible chamber devices

With plural working fluid inlet or outlet passages

418132, 60 3908, F04C 218, F04C 1500

Patent

active

046310096

ABSTRACT:
A lubrication scavenge system for an engine bearing compartment or the like utilizing a gear pump with two or more independent inlets with separate flow paths through the pump. The inlets and flow paths are maintained separate from each other by the use of inlet and discharge seal arcs to avoid any fluid communication therebetween. The pump can operate to pump different fluids through each inlet with the fluid being either a gas or liquid or a mixture of both and with the pump continuing its pumping action when there is an instantaneous interchange in the fluid being pumped at each inlet as can occur when the engine bearing compartment is subjected to varying positive and negative gravity forces.

REFERENCES:
patent: 2824522 (1958-02-01), Compton
patent: 3018641 (1962-01-01), Carpigiani
patent: 3073251 (1963-01-01), Weigert
patent: 3137238 (1964-06-01), Gordon
patent: 3435773 (1969-04-01), Gustafsson
patent: 3666383 (1972-05-01), Werner
patent: 4025056 (1977-05-01), Miles et al.
patent: 4108582 (1978-08-01), Bitton
A.P.C. Application of Waltenbauer, Ser. No. 261,139, published Apr. 27, 1943.
Casamassa et al, Jet Aircraft Power Systems, McGraw-Hill Book Co. Inc., N.Y., 1957, pp. 145, 146.

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