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:
Jun. 27, 2006
Filed:
Dec. 10, 2001
Anthony J. Grzesiak, Sauk Village, IL (US);
Chris Denault, St. Anne, IL (US);
Thomas G. Brand, Northville, MI (US);
Darren L. Firth, Parramatta, AU;
Richard T. Tamba, Castle Hill, AU;
Anthony J. Grzesiak, Sauk Village, IL (US);
Chris Denault, St. Anne, IL (US);
Thomas G. Brand, Northville, MI (US);
Darren L. Firth, Parramatta, AU;
Richard T. Tamba, Castle Hill, AU;
BorgWarner Inc., Auburn Hills, MI (US);
Abstract
A brake band shifting mechanism for an automatic transmission. The brake band shifting mechanism includes a brake band encircling a brake drum of the transmission. A first end of the brake band is mounted to a secured portion of the transmission by a first linkage and a second end of the brake band is mounted to a two-stage servo by a second linkage. The servo provides selective apply and release pressure to the second linkage to control the compression or expansion of the brake band. In operation, the brake band is quickly compressed to the brake drum during the first stage of the servo, and then fine adjustments are made to control the speed of the brake drum during the second stage of the servo, where inputs from position and speed sensors in the transmission are used to control the adjustment of the brake band.