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:
Oct. 20, 2015
Filed:
Jul. 24, 2012
Applicant:
Berron Hairston, Greenville, SC (US);
Inventor:
Berron Hairston, Greenville, SC (US);
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 37/00 (2006.01); B60K 17/28 (2006.01); B60T 10/00 (2006.01); B60T 13/58 (2006.01); F16D 57/00 (2006.01); F16D 63/00 (2006.01); F16H 57/00 (2012.01);
U.S. Cl.
CPC ...
B60K 17/28 (2013.01); B60T 10/00 (2013.01); B60T 13/586 (2013.01); F16D 57/00 (2013.01); F16D 63/002 (2013.01); F16H 57/0006 (2013.01);
Abstract
A power take-off unit ('PTO') may include a retarder to reduce noise while the transmission PTO output gear is operating at low torque. The retarder may variably load the PTO based on the PTO output load, while disengaging from the PTO while the PTO is not operational. The retarder may also serve as a primary retarder function to slow a vehicle's speed. The retarder may be controlled by a vehicle operator or by a processor.