Company Filing History:
Years Active: 2000-2002
Title: Innovations by John Hamrin in Muffler Technology
Introduction
John Hamrin is an accomplished inventor based in Bloomington, MN (US). He has made significant contributions to the field of muffler technology, particularly for heavy-duty trucks. With a total of 3 patents to his name, Hamrin's work focuses on enhancing the performance and efficiency of engine retarders.
Latest Patents
Hamrin's latest patents include innovative designs for mufflers that are specifically engineered for use with engine retarders. One of his notable inventions is a muffler that effectively muffles both positive power and compression brake type engine retarders. This muffler features an outer shell that defines an internal volume, with a first inner perforated wall spaced from the outer shell, creating an annular volume filled with packing material. The design also incorporates an inlet tube that is strategically oriented within the internal volume.
Another significant patent involves a muffler designed for heavy-duty trucks. This invention includes an outer wall that defines an internal volume, along with an inlet tube and an outlet tube construction that features a diverging section and a choke extension. The design is optimized to attenuate low-frequency noise, making it particularly useful for the internal environments of truck cabs or sleepers.
Career Highlights
John Hamrin is currently associated with Donaldson Company, Inc., where he continues to innovate in muffler technology. His work has been instrumental in developing solutions that address noise reduction and performance enhancement in heavy-duty vehicles.
Collaborations
Throughout his career, Hamrin has collaborated with notable colleagues, including Theodore G. Angelo and Eivind Stenersen. These partnerships have contributed to the advancement of muffler technology and the successful implementation of his inventions.
Conclusion
John Hamrin's contributions to muffler technology demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of engineering principles and a dedication to improving the performance of heavy-duty trucks.
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.