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:
Jan. 29, 2002
Filed:
Dec. 27, 1999
Myron D. Tupper, Boring, OR (US);
Bill Gallentine, Hood River, OR (US);
Latch-Tool Development Co. LLC, Colorado Springs, CO (US);
Abstract
A bi-stable valve arrangement includes a body having first and second opposing ends and constructed and arranged to define a passage between the body and another element so that the passage extends from the first end to the second end. A seal member associated with the body. A first spring structure biases the seal member in a first direction and a second spring structure biases the seal member in a direction opposite the first direction. The first and second spring structures are constructed and arranged so that the seal member may seal the passage. The first and second spring structures have spring loads such that under certain fluid pressure conditions on the first and second sides of the body, the seal member moves against the bias thereon to permit fluid flow through the passage in one direction, and under different pressure conditions on the first and second sides of the body, the seal member moves against the bias thereon to permit fluid to flow through the passage in a direction opposite the one direction. A check valve and an over pressure valve structure are also provided.