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:
Apr. 02, 2013
Filed:
Nov. 10, 2009
Ion Fintescu, Paris, FR;
Laurent Gille, Dammarie les Lys, FR;
Jean-pierre Andre Joseph Mourlan, Nogent sur Marne, FR;
Matthieu Savarit, Antony, FR;
Ion Fintescu, Paris, FR;
Laurent Gille, Dammarie les Lys, FR;
Jean-Pierre Andre Joseph Mourlan, Nogent sur Marne, FR;
Matthieu Savarit, Antony, FR;
SNECMA, Paris, FR;
Abstract
A device for regulating the flow rate of air feeding a turbine ventilation cavity of a turbomachine turbine section is disclosed. The device includes at least one tubular duct opening into a take-off cavity and leading into a turbine ventilation cavity, the pressure inside the take-off cavity being higher than the pressure inside the turbine ventilation cavity; an air flow rate regulation valve disposed in the tubular duct, the valve being suitable for moving under the effect of the pressure difference between the take-off cavity and the turbine ventilation cavity; and a mechanical return device for holding the valve in a maximum closure position for the duct so long as the pressure difference between the take-off cavity and the turbine ventilation cavity remains below a predetermined threshold pressure.