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:
Nov. 22, 2011
Filed:
Jul. 24, 2009
Applicant:
Wesley Kridner, Canton, MI (US);
Inventor:
Wesley Kridner, Canton, MI (US);
Assignee:
Ford Global Technologies, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A camshaft phaser for an internal combustion engine includes a rotor which is rotationally coupled to a camshaft and a hydraulic positioning system for timing the rotor and camshaft with respect to the crankshaft of an engine. A bypass circuit permits hydraulic fluid, such as engine lubricating oil, to flow through at least a portion of the phaser without affecting timing of the camshaft with respect to the crankshaft. In this manner, the phaser may be warmed up rapidly, without adversely affecting engine operation.