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:
Dec. 17, 2013
Filed:
Oct. 23, 2009
Applicants:
Theodore A. Malott, Jr., Jackson, MI (US);
Joshua L. Roby, Marshall, MI (US);
Inventors:
Theodore A. Malott, Jr., Jackson, MI (US);
Joshua L. Roby, Marshall, MI (US);
Assignee:
BorgWarner Inc., Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fan drive system is provided that is hydraulically controlled having an electrical failure mode wherein midrange operation of the fan drive system is maintained. Accordingly, in the failure mode, a fan drive system hydraulic relief valve is not closed thereby ensuring a degree of operation of the fan drive system even during periods of electrical failure.