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. 25, 2019
Filed:
Dec. 20, 2017
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/344 (2006.01); F01L 1/02 (2006.01);
U.S. Cl.
CPC ...
F01L 1/34409 (2013.01); F01L 1/022 (2013.01); F01L 1/024 (2013.01); F01L 2001/3443 (2013.01); F01L 2001/34453 (2013.01); F01L 2001/34483 (2013.01); F01L 2201/00 (2013.01);
Abstract
A variable cam timing system in an engine is provided. The variable cam timing system includes a camshaft receiving rotational input from a crankshaft. The camshaft includes a valve cam rotationally actuating a valve coupled to a cylinder and a null cam actuating a null follower including a null spring exerting a return force on the null cam during interaction between the null cam and the null follower, where the null follower is independent from the cylinder.