US 11,053,863 B2
Integrated fuel pump and control preservation system
Brian Cabello, Windsor, CT (US); Michael Meagher, Tolland, CT (US); and Steven S. Sperling, Somers, CT (US)
Assigned to Raytheon Technologies Corporation, Farmington, CT (US)
Filed by UNITED TECHNOLOGIES CORPORATION, Farmington, CT (US)
Filed on Sep. 1, 2017, as Appl. No. 15/694,358.
Prior Publication US 2019/0072041 A1, Mar. 7, 2019
Int. Cl. F02C 9/26 (2006.01); F02C 7/232 (2006.01); F01D 25/00 (2006.01); F02C 7/32 (2006.01); H01H 9/16 (2006.01)
CPC F02C 9/263 (2013.01) [F01D 25/002 (2013.01); F01D 25/007 (2013.01); F02C 7/232 (2013.01); F02C 7/32 (2013.01); H01H 9/161 (2013.01); F05D 2220/323 (2013.01); F05D 2230/72 (2013.01); F05D 2260/602 (2013.01); F05D 2260/95 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A switch box for opening and closing a metering valve, a first solenoid valve, and a second solenoid valve of an integrated fuel pump and control during preservation of a fuel system, comprising:
a mating connector configured to engage a pin interface of the integrated fuel pump and control, the mating connector comprising a first pin and a second pin; and
a circuit electrically coupled to the mating connector, the circuit comprising:
a power supply electrically coupled to the first pin of the mating connector and electrically isolated from the second pin of the mating connector, wherein the first pin of the mating connector is configured to engage a third pin of the pin interface, the third pin being electrically connected to the metering valve of the integrated fuel pump and control, and wherein the second pin is configured to engage a fourth pin of the pin interface, the fourth pin being electrically coupled to the first solenoid valve; and
a resistor coupled between the power supply and the first pin, wherein the circuit is configured to generate a current that opens the metering valve, the first solenoid valve, and the second solenoid valve of the integrated fuel pump and control at the same time.