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. 19, 2016
Filed:
Mar. 08, 2012
Kyouhei Iwabuchi, Iruma-gun, JP;
Hiroyuki Tanabe, Sayama-shi, JP;
Toshiki Oniduka, Iruma-gun, JP;
Atsushi Yoshida, Iruma-gun, JP;
Kyouhei Iwabuchi, Iruma-gun, JP;
Hiroyuki Tanabe, Sayama-shi, JP;
Toshiki Oniduka, Iruma-gun, JP;
Atsushi Yoshida, Iruma-gun, JP;
IWAKI CO., LTD., Tokyo, JP;
Abstract
A bellows pump with a case member that forms an axial space therein, closed-bottomed cylindrical bellows that are arranged in the space in an axially extendable/contractable manner and axially separate the space into a pump chamber and an operation chamber, suction valves that are provided on a suction side of the pump chamber and guide a fluid to be transferred to the pump chamber, and discharge valves that are provided on a discharge side of the pump chamber and discharge the fluid to be transferred from the pump chamber, and which extends/contracts the bellows by introducing a working fluid into the operation chamber to discharge the working fluid from the operation chamber, wherein each of the bellows is configured by alternately forming mountain portions and valley portions along the axial direction and having, on a predetermined position in the axial direction, annular ring portion integrally formed therewith.