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:
Nov. 08, 1988
Filed:
May. 26, 1987
John W Duffy, Tama, IA (US);
Gregory P Nichols, Marshalltown, IA (US);
Fisher Controls International, Inc., Clayton, MO (US);
Abstract
A diaphragm type regulator valve includes a pusher post with outwardly extending stop ears coupled to the diaphragm. The linkage coupling the pusher post and valve disc includes a lever having a pair of legs that engage a pin in a bifurcated portion of the pusher post for transmitting forces between the diaphragm and the valve disc. A retainer is rigidly mounted to the valve casing and pivotally supports the lever. The retainer includes a pair of stops that straddle the pusher post and extend in the path of travel of the stop ears thereon for positively restraining travel of the pusher post beyond a predetermined point should an excess pressure condition exist. Restraining travel of the pusher post prevents excessive stress on the linkage. A one piece plastic pressure relieve indicator mechanism is also disclosed.