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. 01, 2025
Filed:
Apr. 13, 2022
Safran Helicopter Engines, Bordes, FR;
Philippe Jean René Marie Benezech, Moissy-Cramayel, FR;
Alexis Thomas Valentin Longin, Moissy-Cramayel, FR;
Pierre Anthony Sicaire, Moissy-Cramayel, FR;
Gabriel Darrieumerlou, Moissy-Cramayel, FR;
SAFRAN HELICOPTER ENGINES, Bordes, FR;
Abstract
A liquid fuel supply system for an aircraft engine includes a fuel tank, a suction duct connected to the fuel tank and located higher than the fuel tank, an electric pump, a supply pump that is mechanically driven by an accessory gear box and an outlet of the supply pump being connected to a fuel supply circuit of the engine, and an air expulsion drain. The electric pump is in communication with the suction duct independently of the supply pump, the electric pump is in communication with the air expulsion drain, and the supply pump is in communication with the suction duct independently of the electric pump.