US 12,134,478 B2
Control systems and methods for inflatable evacuation slide
Bhavik Mugeraya, Bangalore (IN); Poly Puthur John, Trivandrum (IN); and Srijith Purushothaman, Bangalore (IN)
Assigned to GOODRICH CORPORATION, Charlotte, NC (US)
Filed by GOODRICH CORPORATION, Charlotte, NC (US)
Filed on Feb. 1, 2022, as Appl. No. 17/590,454.
Claims priority of application No. 202141055482 (IN), filed on Nov. 30, 2021.
Prior Publication US 2023/0166852 A1, Jun. 1, 2023
Int. Cl. B64D 25/14 (2006.01); G05D 16/20 (2006.01)
CPC B64D 25/14 (2013.01) [G05D 16/2013 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An inflation control system for an inflatable device, comprising:
a compressed fluid source;
a solenoid valve connected to the compressed fluid source and configured to control a flow of gas from the compressed fluid source to the inflatable device;
an aspirator fluidly connected between the solenoid valve and the inflatable device, the aspirator configured to entrain ambient air with gas output from the compressed fluid source; and
a control circuit comprising a power source, a pressure switch, an electrical switch, a first electrical line extending from the power source to the pressure switch, a second electrical line extending from the pressure switch to the electrical switch, a third electrical line extending from the electrical switch to the solenoid valve, and a fourth electrical line extending from the solenoid valve to the power source, the control circuit configured to energize, via the power source, the solenoid valve in response to both the pressure switch and the electrical switch being in a closed state, the pressure switch configured to open and de-energize the solenoid valve in response to being exposed to a pressure at or exceeding a pressure threshold.