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. 09, 1999
Filed:
Dec. 17, 1997
Rudolf Beim, Bloomfield, MI (US);
Ford Global Technologies, Inc., Dearborn, MI (US);
Abstract
A multiple-speed epicyclic transmission produces speed ratios in response to movement of a brake band among components of the gearset and subsequent engagement with the gearset component that corresponds to the desired gear ratio. The brake band is biased into engagement with a corresponding gearset component by a spring and is released from that engagement using a hydraulic or electric actuator. A cartridge moves the band to the gearset component that must be held fixed against rotation to produce the desired gear ratio. Engagement of the brake band with a brake drum or ring gear holds the corresponding gearset component against rotation on the transmission housing.