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:
Jan. 22, 2013
Filed:
Jul. 23, 2009
Kaname Hoshi, Tokyo, JP;
Chikara Kanda, Tokyo, JP;
Kaname Hoshi, Tokyo, JP;
Chikara Kanda, Tokyo, JP;
Tokyo Keiso Co., Ltd., Tokyo, JP;
Abstract
A three-valves manifold for a differential pressure type flow meter includes a valve unit and a housing. The valve unit includes a shaft portion, a first valve portion having a first through hole and first to third grooves and a second valve portion having a second through hole and fourth and fifth grooves. The housing includes a space in which the shaft portion and valve portions are rotatably arranged. The first and second through holes and first to fifth grooves are formed at positions such that the first and second through holes communicate differently with first and second inlet and outlet openings of the housing in each of first, second, and third rotational positions.