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. 09, 2014
Filed:
Sep. 12, 2007
Daniel G. Roper, Lucas, TX (US);
Harold J. Mckinney, Durant, OK (US);
Thomas L. Weyer, Jr., Little Elm, TX (US);
Daniel G. Roper, Lucas, TX (US);
Harold J. McKinney, Durant, OK (US);
Thomas L. Weyer, Jr., Little Elm, TX (US);
Fisher Controls International LLC, Marshalltown, IA (US);
Abstract
A control assembly for converting a 'fail-close' regulator to a 'fail-open' regulator, or vice versa, without having to modify or reconfigure a casing of the regulator includes a control member, a central rod, and a spring disposed between first and second spring seats. A regulator including the control assembly includes a valve body and an actuator casing, the valve body defining a fluid flow-path. The control member is slidably disposed within the actuator casing and adapted for displacement relative to the valve body for controlling the flow of fluid through the flow-path. The spring and spring seats are disposed about the central rod, such that the spring biases the control member into a predetermined position relative to the regulator casing.