Patent · US Active

Mixed regime passive valve

US11519508B1 · kind B1 · utility

0Cited by

11References

19Claims

0Family size

Assignee

United States of America as represented by the Secretary of the Air Force · US

Inventors

Richard E Dooley · Portsmouth, US
John H. Chapman · Groton, US

Key dates

Filing date	May 6, 2021
Grant date	Dec 6, 2022
Priority date	—
Expiry date	Aug 11, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K27/0227
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A system for gas extraction is provided with a flap valve coupled to a bore with a pivot axis offset from an axis of the bore. The valve includes a higher mass on a shorter side of the pivot axis. A valve surface on the shorter side is inclined above a horizontal plane when the valve closes. The valve opens during liquid and gas flow to extract gas from the flow. As liquid flows over the valve, the valve is forced to close. The center of gravity of the valve relative to the offset pivot point ensures that the valve remains closed during liquid flow. As gas flows over the valve, closing forces are reduced and under internal vacuum, the mass distribution about the offset pivot axis allows the flap of the valve to tilt; opening the valve and allowing gas to enter the bore.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.