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:
May. 06, 2025
Filed:
Sep. 06, 2021
Oiles Corporation, Tokyo, JP;
Hiroshi Watanabe, Fujisawa, JP;
Kenichi Okumura, Fujisawa, JP;
Wataru Nishioka, Fujisawa, JP;
Ryohei Kaneko, Fujisawa, JP;
OILES CORPORATION, Tokyo, JP;
Abstract
The present invention enables a simple structure to provide an easy adjustment of damping torque to be caused by applied rotation. The rotary damper () is intend to limit movement of viscous fluid filled in a circular cylindrical chamber (), thereby generating a damping torque in response to an applied rotational force. The lid () is the screw-on type capable of being screwed into the casing (), and thus adjusting a clearance gap G1 between the lid () and each partition () by way of changing the screwing amount of the lid () into the casing () allows amount of viscous fluid moving through the clearance gap G1 to be adjusted, thereby resulting in adjustment of a damping torque to be caused by rotation. In addition, each axial force generation member () includes a plastically or elastically deformable element and is located between the lid () and the corresponding partition () to apply a reaction force to the lid (). This causes screwing the lid () into the casing () to generate an axial force, thereby preventing external-leakage of the viscous fluid via a threaded interface between the lid () and the casing (), and allows the leeway for the adjustment of the clearance gap G1 to increase.