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:
Mar. 09, 1999
Filed:
Jun. 06, 1997
Dan J Showalter, Plymouth, MI (US);
Ronald A Schoenbach, Farmington Hills, MI (US);
Borg-Warner Automotive, Inc., Sterling Heights, MI (US);
Abstract
A transfer case having a two-speed drive assembly includes a directly coupled shift operator with feedback. The shift operator includes an electric, pneumatic or hydraulic motor which directly, rotatably drives a shift rail. The shift rail includes threads and receives a shift fork having complementary threads. The shift fork engages a dog clutch. Bi-directional rotation of the shift rail correspondingly bi-directionally translates the shift fork to select direct drive (high gear), reduced speed drive (low gear) or neutral operation of the two-speed drive assembly. A shift rail position sensor provides data to associated logic and command circuitry regarding the actual position of the shift fork.