Company Filing History:
Years Active: 1998-1999
Title: Innovations by David L St Jean
Introduction
David L St Jean is an accomplished inventor based in Chepachet, Rhode Island. He holds two patents that showcase his expertise in battery technology and printer systems. His innovative designs aim to enhance the efficiency and safety of battery-operated devices.
Latest Patents
One of his latest patents is a short circuit and overcharge protected battery pack. This battery pack features an electrical circuit that includes a battery array, a thermostat switch, and a positive temperature coefficient resistor (PTCR). The design allows the pack to maintain the same size and shape as a non-protected pack while ensuring safety and reliability. The batteries are rechargeable, and the pack includes a charging plug connected across the battery array in series with the thermostat and PTCR. Additionally, the pack is wrapped in a heat-shrinkable polymer film for physical integrity.
Another significant patent is a battery-powered printer system with a self-contained high power solid-state battery voltage switching system. This system applies battery voltage to a thermal printhead when the printer is turned on and disconnects it when the printer is off. This feature conserves battery power and extends battery life. FET switches are utilized to connect the battery to the printhead, and the gate voltage is controlled by a flip-flop and FET driver, which are integrated within the printer's circuitry.
Career Highlights
David L St Jean is associated with Comtec Information Systems Inc., where he contributes his expertise in developing innovative battery solutions and printer technologies. His work has significantly impacted the efficiency of battery-operated devices.
Collaborations
David collaborates with John A Navakauskas, leveraging their combined knowledge to drive advancements in their field.
Conclusion
David L St Jean's contributions to battery technology and printer systems reflect his commitment to innovation and efficiency. His patents demonstrate a forward-thinking approach that enhances the functionality and safety of electronic devices.