RV

Ralf Vorndran

ZA Zf Friedrichshafen Ag: 7 patents #257 of 2,695Top 10%
ZL Zf Batavia L.L.C.: 6 patents #5 of 32Top 20%
📍 Bodolz, DE: #1 of 21 inventorsTop 5%
Overall (All Time): #355,718 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
6997834 Device for guiding a moveable conical pulley disc of a CVT variator Thomas Fichtinger, Andreas Salm 2006-02-14
6671602 Method for manually stipulating the transmission ratio of a continuously variable transmission (CVT) Patrick Speicher, Anton Welte 2003-12-30
6554737 Engine speed control via the torque converter lockup clutch of a continuously variable drive Wolfgang Danz, Andreas Piepenbrink, Andreas Schwenger 2003-04-29
6542803 Method for determining adjusting speeds in a continuously variable transmission Wolfgang Danz, Friedrich Reiter, Andreas Piepenbrink, Andreas Schwenger 2003-04-01
6527668 Hydraulic system 2003-03-04
6524210 Automatic transmission 2003-02-25
6434464 Process for evaluating the driving dynamic request of the driver for the driving strategy of an automatic/automated transmission Patrick Speicher 2002-08-13
6424901 Method of calculating for the speed control of a CVT Wolfgang Danz, Friedrich Reiter, Andreas Piepenbrink, Andreas Schwenger 2002-07-23
6216075 Process for determining the operating point of a continuously variable transmission Patrick Speicher, Wolfgang Danz, Udo Gillich 2001-04-10
6173227 Method of setting the transmission ratio of a continuously variable gear Patrick Speicher, Udo Gillich, Wolfgang Danz 2001-01-09
6135916 Process for controlling the pressure of a CVT during a standing start Rolf Karrer 2000-10-24
6066069 Control system for an infinitely variable change-speed gear with a torque converter with a lock-up clutch 2000-05-23
5961408 Device for controlling a CVT Hubert Konig, Hans-Peter Stoll 1999-10-05
5795261 Method of controlling a continuously variable transmission Patrick Speicher 1998-08-18