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. 14, 2014
Filed:
May. 24, 2013
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Aisin Seiki Kabushiki Kaisha, Kariya-Shi, Aichi-Ken, JP;
Abstract
A variable valve timing control apparatus includes a driving-side rotating member, an driven-side rotating member, a cam shaft, a control valve switching supply and discharge of a working fluid relative to an advanced angle chamber and a retarded angle chamber, an advanced angle-side oil passage, a retarded angle-side oil passage, a spider provided with a first oil passage and a second oil passage, a seal mechanism partitioning between at least one of the first oil passage and the second oil passage, and an outside space, and the seal mechanism allows air to come in the at least one of the first oil passage and the second oil passage in a case where pressure inside the at least the one of the first oil passage and the second oil passage is lower than air pressure of the outside space.