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:
May. 07, 2019
Filed:
Jun. 01, 2018
Applicant:
Vistadeltek, Llc, Yorba Linda, CA (US);
Inventor:
Kim Ngoc Vu, Yorba Linda, CA (US);
Assignee:
VistadelTek, LLC, Yorba Linda, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 41/12 (2006.01); F16K 41/10 (2006.01); F16K 27/02 (2006.01); F16K 7/14 (2006.01); F16K 1/36 (2006.01); F16K 7/12 (2006.01);
U.S. Cl.
CPC ...
F16K 41/12 (2013.01); F16K 1/36 (2013.01); F16K 7/123 (2013.01); F16K 7/14 (2013.01); F16K 27/0236 (2013.01); F16K 41/103 (2013.01);
Abstract
A valve diaphragm processed by cold working a small concentric region of one surface has a permanent axisymmetric deformation. The deformed diaphragm can be used in a manner which causes continual elastic compression loading of the diaphragm material. The loading of the deformed diaphragm provides a valve restoring spring force and simultaneously defeats diaphragm tendency toward exhibiting hysteresis. The restoring force provided by the diaphragm can also lessen actuator hysteresis.