Patents Assigned to Safeway (Australasia) Limited
  • Temperature controller for a waterbed
    Patent number: 4814583
    Abstract: A temperature controller for controlling an electrical heater of a bed maintains the bed at a predetermined set temperature and additionally, over a long period of time, acts to vary the set temperature to compensate for variations in the temperature of the ambient environment in which the bed is situated. First and second temperature sensors respectively sense the temperature of the bed and the temperature of the environment ambient to the bed and the heater is switched to regulate the heating of the bed thereby.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: March 21, 1989
    Assignee: Safeway (Australasia) Limited
    Inventor: Jon Rainey