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:
Feb. 03, 2009
Filed:
Jan. 21, 2005
Chris D. Eick, Phoenix, AZ (US);
Paul W. Futa, Jr., North Liberty, IN (US);
Mitchell J. Laidlaw, Tempe, AZ (US);
Anthony C. Libera, Tempe, AZ (US);
Donald M. Purcell, Phoenix, AZ (US);
Chris D. Eick, Phoenix, AZ (US);
Paul W. Futa, Jr., North Liberty, IN (US);
Mitchell J. Laidlaw, Tempe, AZ (US);
Anthony C. Libera, Tempe, AZ (US);
Donald M. Purcell, Phoenix, AZ (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
The present invention provides a relatively simple way to automatically turn on and off the fuel to a starter/generator cooling system during engine start. The present invention takes advantage of a fuel pressure rise provided by an engine fuel boost pump during the period from engine start to engine idle conditions. This pressure rise is used to stroke a shutoff valve in a fuel return to tank valve (FRTTV), which shuts off the starter generator cooling fuel flow. This shutoff occurs automatically with no other external input from, for example, an engine controller. A check valve is also included that prevents back flow through the FRTTV in the event of an engine start with no aircraft pumps running.