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:
Mar. 06, 2001
Filed:
Mar. 08, 1999
Robert T. Weber, Dallas, TX (US);
Flow Design, Inc., Dallas, TX (US);
Abstract
A fluid valve for controlling flow of a fluid from an upstream region to a downstream region includes a housing having a fluid exit, a fluid entry member having a sidewall, and a shut-off member associated with the housing. The sidewall and the fluid entry member is formed with at least one regulating aperture for receiving fluid from the upstream region and a second aperture for receiving fluid from the upstream region. The fluid entry member is movably disposed within the housing such that the at least one regulating aperture has an effective area exposed to the upstream region that decreases as a pressure differential between the upstream region and the downstream region increases. The shut-off member is associated with the housing and the fluid entry member such that fluid flow through the second aperture is prevented when the difference in fluid pressure between the upstream region and the downstream region exceeds a desired value.