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:
Oct. 13, 2020
Filed:
Sep. 28, 2018
Applicant:
Fisher Controls International Llc, Marshalltown, IA (US);
Inventor:
Christopher S. Metschke, Ames, IA (US);
Assignee:
FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D 16/20 (2006.01); F16K 31/126 (2006.01); F15B 13/043 (2006.01); F16K 31/122 (2006.01); F15B 13/04 (2006.01);
U.S. Cl.
CPC ...
G05D 16/2093 (2013.01); F15B 13/0405 (2013.01); F15B 13/0433 (2013.01); F16K 31/122 (2013.01); F16K 31/1268 (2013.01);
Abstract
A relay valve configured according to the various embodiments as described herein advantageously provides consistent, reliable start point pressures for both supply and exhaust functionalities. To achieve this, the relay valves described herein utilize a plurality of diaphragms to neutralize any variable forces due to pressure in an actuator and, optionally, a supply connected to the relay valve.