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:
Dec. 31, 1996
Filed:
Nov. 16, 1994
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A liquid filtering and supply system according to the present invention comprises, a main line to connect a liquid introducing part to a liquid supplying part, a filter disposed in said main line to filter said liquid, a first pressure detector disposed in said main line at an upstream side of said filter to detect a pressure of said liquid before said liquid is introduced to said filter, a second pressure detector disposed in said main line at a downstream side of said filter to detect a pressure of said liquid after said liquid passed out of said filter, a first circulating line for returning a liquid in said main line to the liquid introducing part, a pressure difference computing element to determine a pressure difference between the first pressure detector and said second pressure detector, a control valve disposed in the first circulating line, and a controlling part to adjust an opening of said control valve, based on a signal of the pressure difference transmitted from the pressure difference computing element.