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:
Sep. 15, 2009
Filed:
Mar. 03, 2004
Osamu Takagi, Aichi-ken, JP;
Yasuhiro Shimizu, Mizuho, JP;
Susumu Kuzuya, Gifu, JP;
Tsugio Okamoto, Kani, JP;
Osamu Takagi, Aichi-ken, JP;
Yasuhiro Shimizu, Mizuho, JP;
Susumu Kuzuya, Gifu, JP;
Tsugio Okamoto, Kani, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A pump includes a case, a rotor, and a partition member. The case has a hollow inside defined by an inner wall surface thereof and includes a suction inlet through which fluid is sucked in the hollow and an exhaust outlet through which the fluid is ejected from the hollow. The rotor is rotatable in the hollow. The partition member is supported with respect to the rotor in the direction across the rotor such that two ends make constant contact with the inner wall surface defining the hollow, and is rotatable with the rotor. When the rotor is rotated, the partition member slides in the direction across the rotor and expands and shrinks in the same direction, thereby the two ends of the partition member make constant contact with the inner wall surface of the case. Accordingly, the fluid is sucked through the suction inlet in the hollow and the sucked fluid is ejected through the exhaust outlet from the hollow.