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:
Dec. 30, 2014
Filed:
May. 10, 2011
Francois Delamour, Rubelles, FR;
Jean-louis Muller, Moissy Cramayel, FR;
Nicolas Alain Bernard Potel, Maisons Alfort, FR;
Jean-louis Jacquerie, Antheit, BE;
Albert Cornet, Verviers, BE;
Francois Delamour, Rubelles, FR;
Jean-Louis Muller, Moissy Cramayel, FR;
Nicolas Alain Bernard Potel, Maisons Alfort, FR;
Jean-Louis Jacquerie, Antheit, BE;
Albert Cornet, Verviers, BE;
SNECMA, Paris, FR;
Abstract
A circuit and a method for feeding oil to rolling bearings in a turbomachine is disclosed. The circuit includes an oil supply; an oil duct connecting the supply to lubrication enclosures, each enclosure containing at least one rolling bearing; an oil feed pump located between the supply and the lubrication enclosures; an oil recovery pump connected downstream from each lubrication enclosure; a pressurizing valve placed in the duct between the oil feed pump and the lubrication enclosures, the pressurizing valve being adapted to open when the pressure at its inlet exceeds a predetermined threshold pressure; a branch connection duct connecting the inlet of the pressurization valve to one of the lubrication enclosures in order to feed it with oil; and a feeding device which feeds the lubrication enclosures at a small oil flow rate so long as the pressure at the inlet of the pressurization valve has not reached the predetermined threshold.