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:
Apr. 29, 2008
Filed:
Feb. 22, 2007
Richard Best, Garden City, MI (US);
Debora Manther, Royal Oak, MI (US);
Richard Best, Garden City, MI (US);
Debora Manther, Royal Oak, MI (US);
Schaeffler KG, Herzogenaurch, DE;
Abstract
A valve drive () for an internal combustion engine with a lever-type cam follower () is provided, which is used for the variable adjustable transmission of a raised section () of a cam () to a gas-exchange valve (), in that the cam follower () is supported with an end section () away from the cam on a pivot bearing (), which can be positioned variably on a circular arc-shaped displacement path (), and an end section () close to the cam includes a transmission surface () in connection with the gas-exchange valve (), and also with a support (), wherein a contact surface () for the cam () is mounted rotatably on this support (). Here, the center of the displacement path () should be essentially identical to the rotational center () of the support () when the contact surface () interacts with a raised section-free base circle () of the cam ().