Company Filing History:
Years Active: 1976-1981
Title: The Innovations of Darwin R. Grahl
Introduction
Darwin R. Grahl is a notable inventor based in Newark, NY (US), recognized for his contributions to the field of engineering. He holds a total of 6 patents, showcasing his innovative spirit and technical expertise. His work primarily focuses on advancements in heat pump systems and tube couplings, which have significant applications in various industries.
Latest Patents
One of Grahl's latest patents is the "Discharge line filter-dryer." This invention involves a heat pump system that incorporates a filter-dryer unit located in the discharge line of the compressor. The design allows for unidirectional operation of the filter-dryer in a bidirectional system. The use of molecular sieve desiccant with high water retention capacity at elevated temperatures enables the filter-dryer to operate effectively at the compressor's outlet. Internal baffles, a specially sized housing, and a spring-loaded desiccant support structure are key features that accommodate the high fluid velocity and other conditions encountered in the discharge line.
Another significant patent is the "Tube coupling." This invention pertains to a coupling for unflared tubes, featuring a body with a nut that is threadably connected to form a chamber. A deformable gripping and sealing sleeve is positioned within this chamber, allowing for the insertion of an unflared tube. The design ensures that the tube is gripped and sealed by the sleeve upon deformation, preventing withdrawal and maintaining proper positioning for final tightening.
Career Highlights
Darwin R. Grahl has made substantial contributions to Parker-Hannifin Corporation, where he applies his innovative ideas to enhance product performance and reliability. His work has not only advanced the company's technological capabilities but has also contributed to the broader engineering community.
Collaborations
Throughout his career, Grahl has collaborated with talented individuals such as Cary Haramoto and Walter O. Krause. These partnerships have fostered a creative environment that encourages the development of groundbreaking inventions.
Conclusion
Darwin R. Grahl's innovative contributions, particularly in the areas of heat pump systems and tube couplings, highlight his significant role as an inventor. His patents reflect a commitment to engineering excellence and a drive to improve existing technologies.