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:
Sep. 01, 2015
Filed:
Oct. 24, 2012
Applicant:
Pvi Industries, Llc, Fort Worth, TX (US);
Inventor:
Mark A. Ferguson, Fort Worth, TX (US);
Assignee:
PVI Industries, LLC, Fort Worth, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D 23/19 (2006.01); G05D 23/13 (2006.01);
U.S. Cl.
CPC ...
G05D 23/1917 (2013.01); G05D 23/1306 (2013.01); G05D 23/1393 (2013.01);
Abstract
A thermostatic mixing valve is used in a tempered water blending system. A cold water bypass line in the system acts under the control of a modulating valve and electronic controller to divert cold water back to a temperature sensing element in the mixing valve. By flooding the temperature sensing element, the mixing valve detects a false temperature and adjusts its flow rate of hot and cold water accordingly. The electronic controller acts in reverse of normal fashion, providing negative feedback to the sensing element of the mixing valve.