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:
Jun. 24, 1986
Filed:
Jul. 26, 1984
Roland A Gladstone, Morton Grove, IL (US);
Arnold V Dano, Park Ridge, IL (US);
Mark Controls Corporation, Evanston, IL (US);
Abstract
A fluid flow pressure control valve includes a valve body having a chamber divided by a dashpot plate into an inlet chamber and a dampened flow region chamber. A diaphragm senses the fluid pressure forces in the chamber with an adjustable spring force acting to balance the fluid pressure forces exerted on the other side of the diaphragm. By varying the spring force with a follower piece, which moves axially along a stationary threaded shaft, the amount of fluid pressure necessary to balance the spring force can be selectively varied. The follower can be blocked from travel beyond selected locations by stops positioned on the valve housing and thus a plurality of desired pressure values can be reliably chosen. Fluid flow induced oscillations of the compact, easily installed valve are attenuated by a dashpot means which includes the dashpot plate with an aperture therethrough providing communication between the inlet chamber and the dampened flow region chamber.