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:
Dec. 06, 2016
Filed:
Mar. 12, 2013
Applicant:
Emerson Process Management Regulator Technologies, Inc., McKinney, TX (US);
Inventors:
GuoLei Fan, Sichuan, CN;
Biao Zhou, Sichuan, CN;
Assignee:
EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC., McKinney, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 31/12 (2006.01); G05D 7/01 (2006.01); F16K 31/126 (2006.01); F16K 31/165 (2006.01); G05D 16/06 (2006.01);
U.S. Cl.
CPC ...
G05D 7/0106 (2013.01); F16K 31/1262 (2013.01); F16K 31/165 (2013.01); G05D 16/0669 (2013.01); G05D 16/0694 (2013.01); Y10T 137/0491 (2015.04); Y10T 137/7831 (2015.04);
Abstract
An actuator for a fluid regulator includes two or more control springs operatively connected to a diaphragm such that at least two of the control springs bias the diaphragm independently in parallel and have different natural frequencies. A method for retrofitting a prior art actuator to include a second control spring is also disclosed.