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. 27, 2004
Filed:
May. 13, 2003
Applicant:
Inventors:
Valentin Botosan, Rochester, MI (US);
Berthold Martin, Shelby Township, MI (US);
Assignee:
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 3/100 ;
U.S. Cl.
CPC ...
F16H 3/100 ;
Abstract
An eight-speed automatic transmission having a compound planetary gear set, a second planetary gear set, and a third planetary gear set each driven by three clutches and fixed to four brakes. A hydraulic control system actuates the eight-speed transmission by selectively energizing a plurality of solenoids that in turn engage the three clutches and four brakes. The hydraulic control system provides electronically modulated converter clutch control to the eight-speed automatic transmission system when the hydraulic system is in a drive position, a manual/low position, and a park/neutral position.