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. 12, 2019
Filed:
Jul. 14, 2015
The Reliable Automatic Sprinkler Co., Inc., Liberty, SC (US);
David Deurloo, Liberty, SC (US);
The Reliable Automatic Sprinkler Co., Inc., Liberty, SC (US);
Abstract
A dry pipe valve includes a main chamber having an input port and an output port, a clapper assembly installed in the main chamber, a pushrod, a pushrod chamber, and a dry valve actuator. The clapper assembly includes a clapper that seals the input port of the main chamber, and a hinged lever that holds the clapper in a closed position or allows the clapper to open. Based on a pressure of a control fluid in the pushrod chamber, the pushrod moves to urge the hinged lever against the clapper to hold the clapper in the closed position, or to release the hinged lever and thereby allow the clapper to open. The dry valve actuator is attached to a housing of the pushrod chamber and controls the pressure of the control fluid in the pushrod chamber.