Company Filing History:

7 out of 3,427

Zf Friedrichshafen Ag

Zf Friedrichshafeb Ag

patent

Years Active: 1998-2006

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6997834 - Device for guiding a moveable conical pulley disc of a CVT variator (2006-02-14),

2. 6671602 - Method for manually stipulating the transmission ratio of a continuously variable transmission (CVT) (2003-12-30),

3. 6554737 - Engine speed control via the torque converter lockup clutch of a continuously variable drive (2003-04-29),

4. 6542803 - Method for determining adjusting speeds in a continuously variable transmission (2003-04-01),

5. 6527668 - Hydraulic system (2003-03-04),

6. 6524210 - Automatic transmission (2003-02-25),

7. 6434464 - Process for evaluating the driving dynamic request of the driver for the driving strategy of an automatic/automated transmission (2002-08-13),

8. 6424901 - Method of calculating for the speed control of a CVT (2002-07-23),

9. 6216075 - Process for determining the operating point of a continuously variable transmission (2001-04-10),

10. 6173227 - Method of setting the transmission ratio of a continuously variable gear (2001-01-09),

11. 6135916 - Process for controlling the pressure of a CVT during a standing start (2000-10-24),

12. 6066069 - Control system for an infinitely variable change-speed gear with a (2000-05-23),

13. 5961408 - Device for controlling a CVT (1999-10-05),

14. 5795261 - Method of controlling a continuously variable transmission (1998-08-18),

Title: Ralf Vorndran: Innovator in Continuously Variable Transmission Technology

Introduction

Ralf Vorndran is a notable inventor based in Eriskirch, Germany. He has made significant contributions to the field of continuously variable transmission (CVT) technology, holding a total of 14 patents. His work focuses on enhancing the efficiency and functionality of CVT systems, which are widely used in modern vehicles.

Latest Patents

Vorndran's latest patents include a "Device for guiding a moveable conical pulley disc of a CVT variator." This invention pertains to a continuously variable belt transmission system, specifically designed to guide a conical pulley on a variator shaft. The device incorporates a cylindrical pin that transfers torque between the movable conical pulley and the variator shaft, ensuring smooth operation.

Another significant patent is the "Method for manually stipulating the transmission ratio of a continuously variable transmission (CVT)." This invention outlines a method for drivers to manually adjust the transmission ratio in a motor vehicle equipped with a CVT. The system includes a control device that processes input signals from the driver-vehicle system, allowing for both automatic and manual selection of the transmission multiplication.

Career Highlights

Throughout his career, Ralf Vorndran has worked with prominent companies in the automotive industry, including ZF Friedrichshafen AG and ZF Batavia LLC. His experience in these organizations has contributed to his expertise in transmission technology and innovation.

Collaborations

Vorndran has collaborated with notable professionals in the field, including Patrick Speicher and Wolfgang Danz. These partnerships have likely fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Ralf Vorndran's contributions to continuously variable transmission technology have made a lasting impact on the automotive industry. His innovative patents and collaborative efforts highlight his commitment to advancing vehicle performance and efficiency.

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