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:
Feb. 06, 2001
Filed:
Nov. 18, 1999
Weijian Ma, Liverpool, NY (US);
Gabriel Silva, Liverpool, NY (US);
Young & Franklin, Inc., Liverpool, NY (US);
Abstract
Apparatus for safely installing and removing spring loaded failsafe valve actuators. The apparatus includes a frame that retains a compression spring in a loaded condition between a cover plate fastened to the top wall of the frame and a spring seat slidably contained inside the frame. The spring seat is attached to the valve stem for moving reciprocally therewith between a closed and an open position. The stem is connected to the extendable rod of a remotely controlled actuator that is mounted in the cover plate and arranged to move the stem between the closed and open positions. In the event the actuator fails while the valve is in an open position, the compressed failsafe spring is released to rapidly close the valve.