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:
Jan. 28, 1997
Filed:
Oct. 02, 1995
Applicant:
Inventor:
David J Hazen, Ann Arbor, MI (US);
Assignee:
Ford Motor Company, Dearborn, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L / ; F01L / ;
U.S. Cl.
CPC ...
123 9044 ; 123 9046 ;
Abstract
A rocker arm for an internal combustion engine is provided with a hydraulic lash adjuster located therein. The rocker arm comprises two portions rotatably mounted relative to each other with the hydraulic lash adjuster located therebetween. The hydraulic lash adjuster compensates for any slack in the valve train and rotates with the rocker arm about the rocker arm's axis of rotation rather than move linearly along the pushrod axis as in prior art systems. As a result, hydraulic lash adjuster wear, valve spring force, engine friction, and fuel consumption may be reduced while not decreasing the valve train toss speed.