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:
Jul. 22, 2003
Filed:
Aug. 24, 2000
Applicant:
Inventors:
Hiroyuki Yuasa, Atsugi, JP;
Yoshikazu Tanaka, Atsugi, JP;
Assignee:
Unisia Jecs Corporation, Kanagawa-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 6/108 ;
U.S. Cl.
CPC ...
F16H 6/108 ;
Abstract
The present invention describes a method and a device for determining the direction towards which an input shaft rotation speed changes along with the release of a friction engagement element during transmission operation, and based on the direction of change, determining whether the transmission operation is a power-on state transmission operation or a power-off state transmission operation, and based on the result of determination, deciding either the release-side friction engagement element or the connection-side friction engagement element as the main object of control for performing the transmission operation.