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. 13, 2018
Filed:
Jul. 08, 2016
Applicant:
Carroll G. Rowe, Washington, AR (US);
Inventor:
Carroll G. Rowe, Washington, AR (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D 16/10 (2006.01); A62C 5/02 (2006.01);
U.S. Cl.
CPC ...
G05D 16/103 (2013.01); A62C 5/02 (2013.01); Y10T 137/7811 (2015.04);
Abstract
A pressure-reducing flow regulator for use between a pressurized source and a pump inlet uses dual pistons to reduce the pressure at the pump inlet. Pressure reduction is achieved due to the ratio between the sum of the areas of the two pistons and the area of the inlet. When used in a compressed air foam system, this pressure reducer serves to increase the volume of air available at the desired pump pressure. In one embodiment, a flow of liquid is allowed through a central tube between the two pistons. In another embodiment, the central tube is sealed and a low-pressure bypass allows for flow between the outlet chamber and pressure chamber.