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:
Oct. 26, 1999
Filed:
Mar. 19, 1998
Applicant:
Inventors:
Robert Harcourt, Erie, PA (US);
Tom Dawson, Union City, PA (US);
Assignee:
Snap-Tite Technologies, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
13724622 ; 738665 ; 137551 ; 251214 ; 251267 ; 251325 ;
Abstract
A piston valve for use in connection with the fire protection industry is disclosed which includes features for protecting against corrosion. A sacrificial zinc anode is mounted in the body of the valve under the handwheel. A polymeric piston is used which cannot corrode. A grease fitting protects against corrosion at the interface of the spindle and the valve body or bushing within the body.