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:
Jan. 23, 2018
Filed:
Mar. 17, 2014
Applicant:
Fisher Controls International Llc, Marshalltown, IA (US);
Inventors:
David Anthony Arnold, Marshalltown, IA (US);
Daniel Martin Adams, Marshalltown, IA (US);
Assignee:
Fisher Controls International LLC, Marshalltown, IA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 31/12 (2006.01); F16K 31/126 (2006.01);
U.S. Cl.
CPC ...
F16K 31/1264 (2013.01); F16K 31/1268 (2013.01);
Abstract
Diaphragm actuators having adjustable actuation force are disclosed herein. An example apparatus includes a spring seat coupled to a diaphragm of an actuator. The spring seat is to contact a spring and is to be coupled to a stem. The diaphragm is to displace the stem based on a force provided to the diaphragm, and the stem is to control a fluid valve. The example apparatus also includes an adjuster to adjust an amount of force provided to the spring seat by the spring.