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. 30, 2015
Filed:
May. 15, 2012
Applicants:
Berron Hairston, Greenville, SC (US);
Bradford White, Maumee, OH (US);
Inventors:
Berron Hairston, Greenville, SC (US);
Bradford White, Maumee, OH (US);
Assignee:
ZF Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K 17/28 (2006.01); F16F 15/12 (2006.01); F02B 67/04 (2006.01);
U.S. Cl.
CPC ...
B60K 17/28 (2013.01); Y10T 74/19623 (2015.01); F02B 67/04 (2013.01); F16F 15/12 (2013.01);
Abstract
A power take-off unit ('PTO') may include a damper to reduce noise while the PTO is operating at low torque or at low RPM. The damper may also be located in the transmission before the PTO driver gear. A method may be used to systematically measure the frequency and/or amplitude of the vibrations that cause noise and to adjust the damping constant of a damper to reduce the noise.