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:
Feb. 08, 2005
Filed:
Aug. 31, 2001
Bernhard Dürr, Stuttgart, DE;
Bruhns Imke, Fellbach, DE;
Jürgen Häberlein, Murrhadt, DE;
Harald Schliemann, Waiblingen, DE;
Jörg Schlossarczyk, Winnenden, DE;
Manfred Rabis, Schomdorf, DE;
Bernhard Dürr, Stuttgart, DE;
Bruhns Imke, Fellbach, DE;
Jürgen Häberlein, Murrhadt, DE;
Harald Schliemann, Waiblingen, DE;
Jörg Schlossarczyk, Winnenden, DE;
Manfred Rabis, Schomdorf, DE;
Andreas Stihl AG & Co., , DE;
Abstract
A valve drive having a rocker arm mounted on a cylinder head is provided. One end of the rocker arm is actuated by a push rod to actuate a valve stem of a poppet valve that engages the other end of the rocker arm, which is pivotably held between its ends on a support pin that extends into the cylinder head, with a spherical mounting being provided between the support pin and the rocker arm. Provided on that side of the rocker arm remote from the cylinder head is a bolt head for adjusting the bearing spacing between the rocker arm and the cylinder head for adjusting valve play. To prevent unintended adjustment of the bolt head, the latter cooperates with a rotation preventing element that has an arresting portion that engages the bolt head, and a support portion that conveys the adjustment moment away.