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:
Feb. 20, 2007
Filed:
Dec. 23, 2004
Hussein a Dourra, Bloomfield, MI (US);
Ali M Mourtada, Dearborn Heights, MI (US);
David L Kwapis, Auburn Hills, MI (US);
Maurice B Leising, Clawson, MI (US);
Hussein A Dourra, Bloomfield, MI (US);
Ali M Mourtada, Dearborn Heights, MI (US);
David L Kwapis, Auburn Hills, MI (US);
Maurice B Leising, Clawson, MI (US);
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
An automatic transmission for a vehicle includes an input shaft, an output shaft, a first and second plurality of gears, and a series of engagement elements. The series of engagement elements includes at least one overrunning engagement element in mechanical communication with the second plurality of gears. A controller is operable to disengage a first engagement element associated with a first one of the first plurality of gears and apply a second engagement element associated with a second one of the first plurality of gears to achieve a speed change of the first plurality of gears. The controller is adapted to disengage one of the overrunning engagement elements from engagement with one of the second plurality of gears within a range of 20 to 120 milliseconds after the speed change of the first plurality of gears to accomplish a gear shift of the transmission.