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. 03, 2019
Filed:
Jun. 09, 2017
Applicant:
Dezurik, Inc., Sartell, MN (US);
Inventors:
Adam L. Kalthoff, Albany, MN (US);
Forrest Halvorson, Becker, MN (US);
Assignee:
DeZURIK, Inc., Sartell, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 31/22 (2006.01); E03F 5/08 (2006.01); F16L 55/07 (2006.01); F16K 24/04 (2006.01); F16K 31/122 (2006.01);
U.S. Cl.
CPC ...
F16K 31/22 (2013.01); E03F 5/08 (2013.01); F16K 24/044 (2013.01); F16K 31/122 (2013.01); F16L 55/07 (2013.01);
Abstract
The present disclosure is directed to a combination air valve that uses buoyancy to lift seals into place, preventing media from escaping from the valve. Once the seals are in place, pipeline pressure is used to open and close the valve. The combination air valve includes a low flow vent configured with a pressure equalizing configuration allowing for reduced extrusion forces along the low flow vent, allowing vertical movement of a float shaft at high valve gas pressures with reduced forces.