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:
Jul. 12, 1994
Filed:
Oct. 05, 1993
Applicant:
Inventor:
Hermann Kruger, Wolfsburg, DE;
Assignee:
Volkswagen AG, Wolfsburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ; F01L / ; F15B / ;
U.S. Cl.
CPC ...
123 9055 ; 123 9048 ; 74569 ;
Abstract
A hydraulic tappet-clearance compensating arrangement having no check valve includes an outer cylinder formed with a cup tappet and a piston axially displaceable in the outer cylinder and forming a pressure chamber therein. The outer cylinder is formed with a through-hole and a channel axially positioned so that a flow connection for the pressure medium is provided between the pressure chamber and a reservoir only during the base circle phase of the valve-operating cam and a flow connection is provided between the reservoir and a pressure medium supply only outside the base circle phase of the cam.