Carleton Technologies, Inc.

Gary Thomasulo

William D Siska, Jr

Daniel Korpanty

Glenn Maslowsky

Lawrence Gill

Oliver Berry

Christopher Lanza

A reliable and economical apparatus for relieving pressure in a large aircraft cabin oxygen supply, where multiple oxygen cylinders are used concurrently. A series-parallel array of valves actuated by changes in differential pressure between the oxygen supply and the ambient cabin atmosphere provides overpressure relief The series connection of the valves reduces the risk of open-valve failures, while the parallel connection of sets of series-connected valves reduces the risk of closed-valve failures. The small number of valves used in its design reduces the cost of the apparatus. The series-parallel structure is optionally extended to larger numbers of valves to facilitate the use of less-expensive valves and supporting components without loss of reliability.

Series/parallel relief valve for use with aircraft gaseous oxygen system

An inflation valve has a valve housing having an inner wall, a cylindrical inner chamber terminating in a gas outlet, and a gas inlet bore providing fluid communication between the inner chamber and a pressurized gas source. A piston enclosed in the inner chamber has at one end a head directed toward the gas outlet and at the opposite end a valve actuator connector. The piston further has a gas inlet seal, positioned between the head and the actuator connector, that releasably seals the gas inlet bore from the inner chamber when the piston is in a normal, non-actuated position. A valve actuator connected to the actuator connector operates to pull the piston, thereby moving the gas inlet seal away from the gas inlet bore and putting the inner chamber in fluid communication with the gas inlet bore and pressurized gas source. A regulating spring contacting the piston close to the actuator connector is compressible by the force of pressure exerted by gas contained within the inner chamber and the gas inlet bore and operates to position the piston to control or regulate the outlet pressure.

Inflation valve

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Eden, NY, United States of America

Gary Thomasulo