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:
Oct. 25, 2011
Filed:
Jan. 16, 2008
Tsuyoshi Eguchi, Hyogo, JP;
Atsushi Suzuki, Aichi, JP;
Tetsuo Tominaga, Hyogo, JP;
Mitsuhiro Nakao, Hyogo, JP;
Hajime Izumi, Hyogo, JP;
Jun Ito, Aichi, JP;
Satoshi Kominami, Aichi, JP;
Tsuyoshi Eguchi, Hyogo, JP;
Atsushi Suzuki, Aichi, JP;
Tetsuo Tominaga, Hyogo, JP;
Mitsuhiro Nakao, Hyogo, JP;
Hajime Izumi, Hyogo, JP;
Jun Ito, Aichi, JP;
Satoshi Kominami, Aichi, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A damper is provided to suppress the abnormal noise or air noise at the small opening of the damper. The damper includes a wall surface which forms an air flow passage, a stationary portion which extends from the wall surface to the center of a flow passage, and a rotating portion rotatably disposed in the flow passage, having one end in contact with a portion of the stationary portion at a downstream side of an air flow through the flow passage. A curved wall portion as a convex curved surface protruding to the center of the flow passage is formed on a position of the wall surface on which the air flow passing between the one end and the stationary portion impinges.