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:
Sep. 18, 2001
Filed:
Aug. 28, 2000
Applicant:
Inventors:
Richard A. Genga, E. Greenwich, RI (US);
Hamid Pishdadian, Warwick, RI (US);
Assignee:
Taco, Inc., Cranston, RI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 2/500 ;
U.S. Cl.
CPC ...
F16K 2/500 ;
Abstract
A zone valve for use in a hydronic system, the valve including a ball element through which liquid flows in an axial direction, a valve casing enclosing a ball element, a valve seat in contact with the ball element and the valve casing, the valve seat having a notch to receive an O-ring, an O-ring installed in the notch, and wherein the notch has a surface inclined with respect to the axial direction so that an axial force on the valve seat causes the O-ring installed in the notch to be compressed to improve a seal between the valve seat and an internal bore of the valve casing.