Location History:
- Waiblingen, DE (2007)
- Berglen, DE (2012 - 2016)
Company Filing History:
Years Active: 2007-2016
Title: The Innovative Contributions of Stefan Kummermehr
Introduction
Stefan Kummermehr is a notable inventor based in Berglen, Germany. He has made significant contributions to the field of engineering, particularly in the development of two-stroke engines and portable handheld work apparatuses. With a total of 6 patents to his name, Kummermehr's work reflects a commitment to innovation and efficiency in engine design.
Latest Patents
Kummermehr's latest patents include a groundbreaking two-stroke engine design. This engine features a cylinder with a combustion chamber bounded by a piston that drives a crankshaft, which rotates within a crankcase. The crankcase connects to the combustion chamber via an overflow passage located in the lower dead center region of the piston. Additionally, the engine incorporates an intake passage, with a carburetor forming a section of this passage. The intake passage is partially divided into an air passage and a mixture passage, with a throttle valve controlling the combustion air quantity supplied to both passages. An air-guiding element is strategically arranged on the passage wall to optimize airflow during the idling position of the throttle valve.
Another notable patent involves a portable handheld work apparatus equipped with an internal combustion engine. In this design, the cylinder is fitted with cooling ribs, and a fan wheel generates a cooling airflow that is directed over these ribs. The carburetor is temperature-controlled by the heated cooling air, with a closure element selectively opening or closing an opening that allows heated air to pass. This innovative design includes an air guide wall that enhances cooling efficiency during both summer and winter operations.
Career Highlights
Stefan Kummermehr is currently employed at Andreas Stihl AG & Co. KG, a company renowned for its high-quality outdoor power equipment. His work at Stihl has allowed him to apply his inventive skills in practical applications, contributing to the company's reputation for innovation in the industry.
Collaborations
Throughout his career, Kummermehr has collaborated with talented individuals such as Michael Grether and Robert Köhli. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of cutting-edge technologies.
Conclusion
Stefan Kummermehr's contributions to engine design and portable work apparatuses exemplify the spirit of innovation. His patents not only enhance the functionality of engines but also improve their efficiency and usability. Kummermehr's
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