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:
Nov. 12, 2013
Filed:
Nov. 25, 2009
Yusuke Nakade, Toyota, JP;
Naoki Itazu, Nagoya, JP;
Yusuke Nakade, Toyota, JP;
Naoki Itazu, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Abstract
In a shift-by-wire gearshift control apparatus, even if a switching anomaly in which switching between forward and reverse gears is not possible has occurred, transmission of driving power to the output shaftcan be interrupted as quickly as possible. In the case of the occurrence of a switching anomaly in which switching from a forward gear stage to a reverse gear stage, or vice versa, is not possible, as a path for draining engaging hydraulic pressure supplied to a frictional engagement element (Cto C, B, B) involved in establishing the current gear stage, the hydraulic control circuitsecures an anomaly drain path (or) that is shorter than a normal drain path (or) secured by the hydraulic control circuitduring normal switching.