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. 24, 2007
Filed:
Sep. 28, 2004
Ken Hayashi, Aichi, JP;
Shunsuke Okabayashi, Toyonaka, JP;
Masanobu Kawamoto, Yokohama, JP;
Masayuki Nishiyama, Chigasaki, JP;
Ken Hayashi, Aichi, JP;
Shunsuke Okabayashi, Toyonaka, JP;
Masanobu Kawamoto, Yokohama, JP;
Masayuki Nishiyama, Chigasaki, JP;
Nifco Inc., Yokohama, JP;
Abstract
A rotary damper includes a housing; a viscous fluid filled in the housing; a rotor disposed inside the housing and having a shaft part partially protruding from the housing and a resistance part provided on the shaft part for moving in the viscous fluid inside the housing; and a seal member for sealing between the shaft part and the housing to prevent leakage of the viscous fluid. The rotary damper further includes a first sloping part provided on an upstream side of the rotating resistance part and having a distance relative to an inner surface of the housing gradually decreasing toward a downstream side; and a second sloping part provided on a downstream side of the rotating resistance part and having a distance relative to the inner surface of the housing gradually increasing toward a downstream side.