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:
Sep. 19, 2017
Filed:
Oct. 14, 2014
Applicant:
Allison Transmission, Inc., Indianapolis, IN (US);
Inventors:
Charles F. Long, Pittsboro, IN (US);
Charles T. Taylor, Indianapolis, IN (US);
Assignee:
Allison Transmission, Inc., Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 61/12 (2010.01); F16H 59/04 (2006.01); F16H 61/02 (2006.01); F16H 59/08 (2006.01); F16H 61/686 (2006.01);
U.S. Cl.
CPC ...
F16H 59/045 (2013.01); F16H 59/08 (2013.01); F16H 61/0206 (2013.01); F16H 61/12 (2013.01); F16H 61/686 (2013.01); F16H 2061/1204 (2013.01); F16H 2061/1244 (2013.01); F16H 2061/1288 (2013.01); F16H 2200/0052 (2013.01); Y10T 74/20024 (2015.01); Y10T 477/635 (2015.01); Y10T 477/69363 (2015.01); Y10T 477/693635 (2015.01);
Abstract
A shift by wire control for a multi-speed vehicle transmission is provided. The control includes a shift by wire shift valve in fluid communication with other shift valves and clutch trim valves to provide double blocking features in the neutral range and a reverse range. The shift by wire valve is configured with multiple differential areas to provide failure modes for all forward ranges.