Patents Assigned to Autotherm, Inc.
  • Energy saving circulating system for vehicle heaters
    Patent number: 4308994
    Abstract: An improved low power drain circulating system for vehicle heaters utilizing a magnetic motor power assembly for selectively circulating hot water from the vehicle's engine to the vehicle's heater, even when the engine is shut off, and having self-contained control circuitry to further the economical power consumption of the system.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: January 5, 1982
    Assignee: Autotherm, Inc.
    Inventor: Francis J. Perhats