Location History:
- Flushing, MI (US) (2004)
- Byron, MI (US) (2005)
- Byron Center, MI (US) (2008)
Company Filing History:
Years Active: 2004-2008
Title: Innovations by David J Draeger
Introduction
David J Draeger is a notable inventor based in Byron, MI (US), recognized for his contributions to the field of hydraulic valve lifters. With a total of 3 patents, Draeger has made significant advancements that address critical issues in internal combustion engine performance.
Latest Patents
One of Draeger's latest patents is an assembly process for hydraulic valve lifters designed to reduce variation in valve lift. This innovation addresses the valve lift variation associated with a deactivation roller hydraulic valve, which can lead to unacceptable valve overlap and idle conditions. The assembly process involves associating leakdown test results for individual lash adjusters with residual lash results, thereby minimizing total length variation in the population of assembled hydraulic valve lifters.
Another significant patent is the anti-rotation deactivation valve lifter. This invention includes mechanisms to restrict relative rotation between the pin housing and the lifter body. This improvement is particularly beneficial in V-style or slant engines, where prior art deactivation lifters could experience oil drainage during engine shutdown. Draeger's design ensures that the oil supply port is never positioned on the underside of the pin housing, thus enhancing the reliability of the lifter.
Career Highlights
David J Draeger is currently employed at Delphi Technologies, Inc., where he continues to innovate and develop solutions for the automotive industry. His work has had a profound impact on engine performance and efficiency.
Collaborations
Draeger has collaborated with notable colleagues, including Nick J Hendriksma and Mark James Spath, contributing to the advancement of technology in their field.
Conclusion
David J Draeger exemplifies the spirit of innovation in the automotive sector through his patents and contributions to hydraulic valve lifters. His work not only addresses existing challenges but also paves the way for future advancements in engine technology.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.