Company Filing History:

9 out of 39

Zf Batavia L.l.c.

patents

4 out of 3,427

Zf Friedrichshafen Ag

patents

1 out of 4

Zf Transmission Technologies, L.l.c.

patents

Years Active: 2001-2006

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7029409 - Hydraulic system for a CVT-transmission of a vehicle (2006-04-18),

2. 6890275 - Continuously variable transmission (2005-05-10),

3. 6688999 - Method and device for controlling a drive-line including a CVT (2004-02-10),

4. 6684142 - Slip protection method for a belt-type variator of a CVT (2004-01-27),

5. 6597977 - Method for adjusting the ratio of transmission in a continuous variable transmission (2003-07-22),

6. 6567736 - Speed difference regulation of a switchable frictional engagement control (2003-05-20),

7. 6554737 - Engine speed control via the torque converter lockup clutch of a continuously variable drive (2003-04-29),

8. 6542803 - Method for determining adjusting speeds in a continuously variable transmission (2003-04-01),

9. 6424901 - Method of calculating for the speed control of a CVT (2002-07-23),

10. 6418366 - Method for ratio controlling or speed controlling (2002-07-09),

11. 6402648 - Device for controlling a continuously variable automatic transmission (2002-06-11),

12. 6370462 - Acceleration control for a vehicle with CVT (2002-04-09),

13. 6311113 - Control method for adjusting the transmission ratio of a CVT (2001-10-30),

14. 6219607 - Method for determining an intersection-torque in a driving line of a vehicle with an automatic transmission (2001-04-17),

Title: Innovations of Andreas Piepenbrink

Introduction

Andreas Piepenbrink is a notable inventor based in Meersburg, Germany. He has made significant contributions to the field of automotive engineering, particularly in the development of hydraulic systems for continuously variable transmissions (CVT). With a total of 14 patents to his name, Piepenbrink's work has had a considerable impact on vehicle performance and efficiency.

Latest Patents

One of his latest patents is a hydraulic system for a CVT transmission of a vehicle. This innovative system includes an oil pump that conveys oil from an oil sump to a variator, which consists of a first and a second pulley set. The design features a valve mechanism that controls the pressure acting on each pulley set. Additionally, a pressure selector valve is strategically placed between the valve mechanisms to determine which one controls the main pressure delivered by the oil pump.

Another significant patent is for a continuously variable transmission for motor vehicles. This invention features a variator with primary and secondary V-pulley sets. The primary and secondary V-pulley disks are designed to be axially slidable by hydraulic force, allowing for controlled adjustments of pressure. The system includes an electro-hydraulically controlled pressure supply apparatus that ensures the oil flow is effectively managed through pressure lines and chambers.

Career Highlights

Throughout his career, Andreas Piepenbrink has worked with prominent companies in the automotive industry, including ZF Batavia LLC and ZF Friedrichshafen AG. His experience in these organizations has allowed him to refine his expertise in hydraulic systems and transmission technologies.

Collaborations

Some of his notable coworkers include Wolfgang Danz and Andreas Schwenger. Their collaborative efforts have contributed to the advancement of innovative solutions in automotive engineering.

Conclusion

Andreas Piepenbrink's contributions to the field of automotive engineering through his patents and collaborations highlight his role as a significant inventor. His work continues to influence the development of efficient vehicle transmission systems.

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