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:
Aug. 05, 2014
Filed:
Sep. 01, 2010
Ian Methley, Witney, GB;
Timothy Mark Lancefield, Shipston on Stour, GB;
Ian Methley, Witney, GB;
Timothy Mark Lancefield, Shipston on Stour, GB;
Mechadyne International Limited, Kirtlington, GB;
Abstract
An engine valve system comprises two cams () mounted coaxially, a summation rocker () coupled to followers () of both cams and movable in proportion to the instantaneous sum of the lifts of the respective cams, and a valve actuating rocker () pivotably coupled to the summation rocker () and operative to open an engine valve () in dependence upon the movement of the summation rocker (). In the invention, the actuating rocker () rests on a hydraulic lash adjuster (). A control spring () is provided to urge the summation rocker () in a direction to compress the hydraulic lash adjuster (). A stop () associated with the control spring () limits the movement of the summation rocker () towards the lash adjuster () so as to set the clearance in the valve system when the valve () is closed and the cam followers () are on the base circles of the two cams ().