The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 1981
Filed:
Aug. 30, 1979
Applicant:
Inventor:
George T Milo, Bridgeport, CT (US);
Assignee:
Avco Corporation, Stratford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C / ;
U.S. Cl.
CPC ...
60 3908 ; 184-611 ;
Abstract
A lubrication supply system for providing lubricant to the bearings and the gear box assemblies of a gas turbine engine includes a three stage poppet control valve means interposed between the source of pressurized lubricant and the bearings. The control valve is responsive to the engine speed which determines the level of pressurization of the pressurized lubricant. The control valve by-passes all lubricant to a sump below a selected speed, opens a first passage to the bearings, etc. during idling speed and, modulates the opening of a second passage to the bearings, etc., at speeds above idling.