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:
Aug. 28, 1990
Filed:
Apr. 06, 1990
Applicant:
Inventors:
Gordon K Wells, Mansfield, OH (US);
Max L Green, Mansfield, OH (US);
Assignee:
Therm-O-Disc, Incorporated, Mansfield, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251321 ; 137495 ;
Abstract
A valve assembly has a valve operting button with an outwardly extending button flange received in a cavity. Liquid entering the cavity floats the button to move the button flange into engagement with a surface, and this tends to seal the cavity and cause liquid pressure buildup therein. A venting path between the button flange & the surface it engages prevents sealing of the cavity, and prevents liquid pressure buildup therein.