Company Filing History:
1 out of 46 
1 out of 832,961 Years Active: 1979
Title: Yizhak Friedman: Innovator in Water Pressure and Heat Pump Technologies
Introduction
Yizhak Friedman is a notable inventor based in Newton, MA (US). He has made significant contributions to the fields of water pressure systems and heat pump technologies. With a total of 2 patents to his name, Friedman has demonstrated a commitment to innovation and engineering excellence.
Latest Patents
Friedman's latest patents include a "Water pressure booster system and control valve therefor" and a "Liquid piston heat-actuated heat pump and methods of operating same." The water pressure booster system features a control device that regulates pressure in the distribution system through a closely balanced piston valve. The system's flow is managed by a throttling valve, which is actuated by the pressure differential between the system pressure and a constant pressure acting on the piston. Additionally, the heat pump utilizes liquid pistons to displace the working gas, allowing for efficient power transmission without the need for mechanical shafts or levers. This innovative design closely approximates a Stirling cycle, operating in a thermally regenerated cycle without valves.
Career Highlights
Throughout his career, Yizhak Friedman has worked with various companies, including Amtrol Inc. His work has focused on developing advanced technologies that enhance efficiency and performance in fluid dynamics and thermal systems.
Collaborations
Friedman has collaborated with notable individuals in his field, including Joseph Gerstmann and Bernard B Becker. These partnerships have contributed to the advancement of his innovative projects and patents.
Conclusion
Yizhak Friedman is a distinguished inventor whose work in water pressure systems and heat pump technologies has made a lasting impact. His innovative patents reflect his dedication to engineering and problem-solving in the field.