This inventor holds 7 USPTO granted patents, plus 1 CIPO patent. Top assignees: Parr Manufacturing, Inc., Ziphron, Inc., Parr Manufacturing Company. Active years: 1976-1992.
Company Filing History:
3 out of 10 
2 out of 2 
1 out of 1 Years Active: 1976-1992
Title: Erwin W Parr: Innovator in Fuel System Technology
Introduction
Erwin W Parr is a notable inventor based in Des Moines, IA (US), recognized for his contributions to fuel system technology. With a total of 7 patents to his name, Parr has made significant advancements in the design and functionality of fuel pressure regulators and filters.
Latest Patents
Among his latest innovations is a fuel filter and pressure regulator system apparatus. This invention combines a fuel pressure regulator and a fuel filter for vehicle fuel systems. The apparatus includes a fuel supply tank with a pump that delivers fuel to a supply rail equipped with fuel injectors. A strategically placed fuel filter operates between the inlet supply tube and the fluid outlet tube, ensuring that impurities are filtered from the fuel. The system features a valve that regulates flow back into the fuel supply tank when the pressure exceeds a predetermined level, maintaining optimal performance.
Another significant patent is a pressure regulator that consists of a housing with a chamber divided by a diaphragm. This design allows for precise control of fuel flow through various ports connected to the fuel return line, fuel rail, and intake manifold of an internal combustion engine. The regulator's innovative mechanism includes an elongated valve member and a compression spring, which work together to ensure efficient operation.
Career Highlights
Erwin W Parr has worked with several companies throughout his career, including Parr Manufacturing, Inc. and Ziphron, Inc. His experience in these organizations has contributed to his expertise in fuel system technologies and patent development.
Collaborations
Parr has collaborated with Timothy B Brandt, further enhancing his innovative projects and expanding his impact in the field of fuel system technology.
Conclusion
Erwin W Parr's contributions to fuel system technology through his patents and collaborations highlight his role as a significant inventor in this domain. His work continues to influence advancements in vehicle fuel systems, showcasing the importance of innovation in engineering.