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:
Sep. 09, 2003
Filed:
Mar. 07, 2002
Applicant:
Inventors:
Michael Haas, Weisendorf, DE;
Henning Karbstein, Strullendorf, DE;
Martin Rauch, Bamberg, DE;
Dieter Schmidt, Nuremberg, DE;
Assignee:
Ina Schaeffler KG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L 1/14 ;
U.S. Cl.
CPC ...
F01L 1/14 ;
Abstract
The invention proposes a switchable tappet ( ) for the direct transmission of a cam lift to a tappet push rod. A coiled compression spring ( ), used as a lost motion spring, for loading the inner element ( ) is shifted axially out of a housing ( ). For this purpose, the inner element ( ) comprises an extension ( ) that projects out of the housing ( ) and is surrounded by the coiled compression spring ( ). This measure contributes to minimizing the total mass of the switchable tappet ( ) because the overall length of the housing ( ) is shortened.