Patents by Inventor Andreas Jaksch

Andreas Jaksch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Variable timing camshaft drive system
    Patent number: 5606941
    Abstract: A variable valve timing camshaft drive system is provided with an adjusting device arranged between the loose end and the load end of a chain which is operative between chain wheels of two parallel camshafts of an internal-combustion engine. For tightening the chain and influencing the relative rotating position of a camshaft--variable valve timing--the device comprises a first hydraulic piston and a second hydraulic piston. The first hydraulic piston can be alternately acted upon by pressure and, in the process, takes up two end positions. By means of a third hydraulic piston, the first hydraulic piston may also be fixed in an intermediate position.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: March 4, 1997
    Assignee: Dr.Ing. h.c.F. Porsche AG
    Inventors: Alfred Trzmiel, Wolfgang Stephan, Thomas Alber, Andreas Jaksch, Olaf Fiedler