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:
Apr. 05, 2005
Filed:
Nov. 08, 2002
Tsuyoshi Watanabe, Iruma-gun, JP;
Masao Morishita, Iruma-gun, JP;
Tsutomu Sawada, Iruma-gun, JP;
Toshiki Oniduka, Iruma-gun, JP;
Tsuyoshi Watanabe, Iruma-gun, JP;
Masao Morishita, Iruma-gun, JP;
Tsutomu Sawada, Iruma-gun, JP;
Toshiki Oniduka, Iruma-gun, JP;
Iwaki Co., Ltd., Tokyo, JP;
Abstract
There is provided a pump system excellent in a maintenance ability and compatibility. The pump system comprises a pump () for transferring a liquid by alternately supplying air to air chambers () to extend and contract a pair of bellows () linked to a shaft (). It also comprises a switching valve mechanism () for switching the air supplied to the pump (). Switching mechanisms () are employed to switch the pilot air for controlling the switching operation of the switching valve mechanism (). The switching mechanisms are detachably attached to cases () of the pump () from outside.