Company Filing History:
Years Active: 1995-2000
Title: Innovations by James L Murphy
Introduction
James L Murphy is a notable inventor based in Streamwood, IL (US). He has made significant contributions to the field of hydraulic systems, particularly in elevator technology. With a total of 6 patents to his name, Murphy's work showcases his expertise and innovative spirit.
Latest Patents
One of his latest inventions is a backup apparatus for a hydraulic elevator brake control. This braking device is designed to lock the piston that carries an elevator car or cable pulley by engaging at least two brake arms. These brake arms are actuated by a brake drive, which includes a brake cylinder with a plunger that is biased by hydraulic fluid. In the event of a pressure drop in the brake cylinder or unauthorized downward motion of the elevator drive piston, the brake arms close to prevent movement. Additionally, a brake control circuit connected to a power supply actuates the brake drive and features a buffer battery backup for power supply failures.
Another significant invention by Murphy is a hydraulic brake controller. This system serves as an emergency brake for a lifting elevator. When activated, the brake arms contact the ram circumferentially to slow and stop its downward motion. The brake system can be actuated by various triggers, including loss of hydraulic pressure or signals from motion detectors. A programmed control system compares the actual motion of the elevator to the desired motion, ensuring safety by actuating the brake when necessary.
Career Highlights
Throughout his career, James L Murphy has worked with companies such as Inventio AG and Invento AG. His experience in these organizations has allowed him to refine his skills and contribute to innovative projects in hydraulic technology.
Collaborations
Murphy has collaborated with notable individuals in his field, including Adolf H Martin and Cary J Ringel. These partnerships have likely enriched his work and led to advancements in elevator safety technology.
Conclusion
James L Murphy's contributions to hydraulic elevator technology through his patents demonstrate his commitment to innovation and safety. His inventions continue to influence the industry and enhance the functionality of elevator systems.