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:
Aug. 04, 2020
Filed:
Jun. 21, 2018
Aisin Seiki Kabushiki Kaisha, Kariya-shi, Aichi-ken, JP;
Eiji Miyachi, Nishio, JP;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-Shi, Aichi-Ken, JP;
Abstract
A valve opening and closing timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a phase adjustment mechanism configured as a differential type reduction gear mechanism where an inner gear rotates about a rotation axis while revolving around an eccentric axis which is disposed parallel to the rotation axis in a state where a drive shaft fitted in the inner gear is driven to rotate about the rotation axis, a biasing member provided at an outer periphery of the drive shaft and applying a biasing force to mesh an external teeth portion of the inner gear with an internal teeth portion of the ring gear, and a restriction portion provided at the drive shaft to restrict a displacement of the inner gear in a direction where the inner gear is separated from the ring gear against the biasing force of the biasing member.