Location History:
- Rockford, IL (US) (1991 - 1992)
- Stillman Valley, IL (US) (1999 - 2005)
Company Filing History:
3 out of 1,372 
2 out of 4,613 
1 out of 19 
Years Active: 1991-2005
Title: The Innovative Journey of Robert Grennan
Introduction: Robert Grennan is a prominent inventor based in Stillman Valley, Illinois, known for his contributions in the field of mechanical engineering. With a total of six patents to his name, Grennan has made significant advancements that enhance the functionality and efficiency of electromechanical devices.
Latest Patents: Among his most recent innovations are the following two patents. The first is an "Internal Lubrication Screw Pump for Hollow Shaft," which introduces a rotary machine integrated with a lubricating oil housing. This invention features a rotatable shaft with a passage that facilitates oil delivery to machine components, significantly improving the lubrication process. The second patent, "Shaftless Rotor Construction," pertains to a dynamoelectric machine design that incorporates a stack of ferrous laminations. This design innovatively uses a sleeve to orient the laminations and includes mechanisms for clamping and tensioning, resulting in enhanced reliability and performance.
Career Highlights: Robert Grennan’s career spans multiple prestigious companies, including the Sundstrand Corporation and Hamilton Sundstrand Corporation. His work at these organizations has allowed him to develop practical solutions and cutting-edge technologies that have contributed to advancements in the field of electromechanical machinery.
Collaborations: Throughout his career, Grennan has collaborated with notable individuals such as William J. Greenlee and David G. Halsey. These partnerships have allowed for the exchange of ideas and the development of innovative concepts, further solidifying Grennan's reputation as a leading inventor.
Conclusion: With his inventive spirit and engineering prowess, Robert Grennan continues to impact the field of mechanical engineering. His patents not only demonstrate his commitment to innovation but also reflect the importance of collaboration in the journey of invention. As technology evolves, Grennan’s contributions will undoubtedly inspire future generations of inventors and engineers.
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.