Thermal measuring and testing – Temperature measurement – By electrical or magnetic heat sensor
Patent
1981-11-10
1984-06-19
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
By electrical or magnetic heat sensor
340107, 34087017, 350297, 374141, B60Q 126, G01K 114
Patent
active
044550960
ABSTRACT:
A remote readout unit in a weather-proof housing is mounted on the exterior front wall of a temperature controlled trailer truck in a position to be observed by the driver in his rear view mirror and from the ground when the vehicle is parked. The readout comprises three electro-magnetic seven-segment digitals arranged as a two digit indicator for the temperature within the trailer and a single character for indicating the current mode of operation of the refrigerating equipment. The unit, powered by the battery of the trailer, includes a sensing thermistor located in the trailer, connections to each of the three operational mode indicating lights of the refrigerating equipment and a micro-processor located within the housing which in repetitive cycles monitors the temperature and operational mode indicators, processes the information by a permanent program and updates the digital readouts, the latter being selectively determined by the position of a manual switch located on the housing to display the information in either a reverse image for viewing in a rear view mirror or a direct image for viewing from the ground.
REFERENCES:
patent: 1806896 (1931-05-01), Freund
patent: 3366950 (1968-01-01), Wilson
patent: 3594752 (1971-07-01), Alton
patent: 3932861 (1976-01-01), Bull
patent: 4024495 (1977-05-01), O'Brien
patent: 4232682 (1980-11-01), Veth
patent: 4298947 (1981-11-01), Tamura et al.
patent: 4336712 (1982-06-01), Hawkins
patent: 4348653 (1982-09-01), Tsuzuki et al.
Barnett Erwin M.
Brandstedt Controls Corporation
Yasich Daniel M.
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