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. 01, 2005
Filed:
Feb. 14, 2002
Hermann Gaessler, Vaihingen, DE;
Udo Diehl, Stuttgart, DE;
Karsten Mischker, Leonberg, DE;
Rainer Walter, Pleidelsheim, DE;
Juergen Schiemann, Markgroeningen, DE;
Christian Grosse, Kornwestheim, DE;
Volker Beuche, Stuttgart, DE;
Stefan Reimer, Markgroeningen, DE;
Hermann Gaessler, Vaihingen, DE;
Udo Diehl, Stuttgart, DE;
Karsten Mischker, Leonberg, DE;
Rainer Walter, Pleidelsheim, DE;
Juergen Schiemann, Markgroeningen, DE;
Christian Grosse, Kornwestheim, DE;
Volker Beuche, Stuttgart, DE;
Stefan Reimer, Markgroeningen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A gas exchange valve device for an internal combustion engine is provided with a hydraulic apparatus which includes a fluid circuit and at least one pressure reservoir connected to the fluid circuit and containing piston prestressed by a device, and also includes a controllable actuating device. A gas exchange valve is also provided, whose valve element is acted on by the actuating device. In order to achieve a simpler design of the gas exchange valve device the pressure reservoir is disposed so that in an approximately unpressurized state of the pressure reservoir, its piston at least indirectly locks the valve element of the gas exchange valve in an essentially closed position.