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U.S. Department of Energy
Office of Scientific and Technical Information

Temperature controlled electric engine block

Patent ·
OSTI ID:6950233
A heater is described for internal combustion engines, comprising in combination: (a) a base member having means for attaching it in an opening of an engine block, (b) an electric heater element carried by the base member, the element being adapted to be exposed to the interior area of the block and being adapted to heat the coolant thereof, (c) electric terminals carried by the base member and connected to the heater element to effect energization of the same, (d) an electric supply cable having a molded plug detachably mounted on the base member, the plug having terminal means cooperable with the electric terminals to effect an electrical circuit therethrough, and (e) a heat-responsive sensor device carried by the plug to respond to transfer of heat from the base member thereto for the purpose of controlling the energization of the heater element, (f) the terminal means comprising elongate connectors, (g) the plug having a boss surrounding the connectors and mounting the same, (h) the sensor device being imbedded in the boss of the plug, (i) the base member having an encircling integral side wall portion in which the boss of the plug is received, (j) the sensor device having an exposed sloping leading surface at a side of the boss to facilitate insertion of the plug into the boss receiving side wall portion, and the sensor device engaging and bearing against the inside of the encircling side wall portion of the base member in good heat-exchanging relation therewith.
Assignee:
Casco Products Corp., Bridgeport, CT
Patent Number(s):
US 4634834
OSTI ID:
6950233
Country of Publication:
United States
Language:
English