Company Filing History:
Years Active: 1976-1978
Title: Rashmikant P Shah: Innovator in Film Technology
Introduction
Rashmikant P Shah is a notable inventor based in Hartford, Wisconsin, known for his contributions to film technology. He holds 2 patents that showcase his innovative approach to enhancing film reading mechanisms. His work primarily focuses on improving the efficiency and functionality of microfilm readers.
Latest Patents
One of his latest patents is the "Variable speed AC motor control circuit." This invention features a microfilm reader with a film transport mechanism driven by separate forward and reverse motors. During operation, the driven motor receives full AC power for high-speed driving. In low-speed operation, it receives partial power during half-cycles of one polarity, while minimal power is supplied during half-cycles of the opposite polarity. The undriven motor is pulled by its associated reel as the film unwinds. A large capacitor, part of a series circuit with both motors, charges while either motor runs. When the driven motor stops, the capacitor discharges into both motors, providing a unipolar field that produces braking torque. This mechanism not only stops the driven motor quickly and efficiently but also maintains film tension by stopping the undriven motor.
Another significant patent is the "Vernier carriage control." This invention relates to an ultrafiche carriage assembly used in ultrafiche apparatuses that project magnified images of selected film frames onto a reference surface. The disclosed carriage assembly allows for vernier control of the film frame positions between the light and projection systems, enabling the selection of specific film frames located on the ultrafiche.
Career Highlights
Rashmikant P Shah is associated with Bell & Howell Company, where he has made significant contributions to the field of film technology. His innovative designs and patents have enhanced the functionality of film readers, making them more efficient and user-friendly.
Collaborations
He has worked alongside Theodore E Dahlen, contributing to the development of advanced film technology solutions.
Conclusion
Rashmikant P Shah's innovative patents and contributions to film technology have made a lasting impact in the industry. His work continues to influence the design and functionality of microfilm readers, showcasing the importance of innovation in enhancing technological efficiency.