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. 26, 2021
Filed:
Jun. 13, 2017
Oiles Corporation, Tokyo, JP;
Hiroshi Watanabe, Fujisawa, JP;
Ryohei Kaneko, Fujisawa, JP;
OILES CORPORATION, Tokyo, JP;
Abstract
Provided is a damper wherein viscous fluid which fills a circular cylinder chamber is more reliably prevented from leaking. A rotary damper () includes: a first seal ring () of an elastic body, arranged between a through-hole () of a circular cylinder chamber () in a case () and a lower end of a rotor body of a rotor (); and a second seal ring () of an elastic body, arranged between a through-hole () in a lid () and an upper end of the rotor body. The first seal ring () has: an outer peripheral surface with a width in a direction of a center axis of the circular cylinder chamber (), which is pressed against an inner peripheral surface of the through-hole (); and an inner peripheral surface with a width in the direction of the center axis of the circular cylinder chamber (), which is pressed against an outer peripheral surface of the lower end of the rotor body, and also a second seal ring () has: an outer peripheral surface with a width in the direction of the center axis of the circular cylinder chamber (), which is pressed against an inner peripheral surface of the through-hole (); and an inner peripheral surface with a width in the direction of the center axis of the circular cylinder chamber (), which pressed against an outer peripheral surface of the upper end of the rotor body.