Engine block heater with expansion yoke

Details Engine block heater with expansion yoke Engine block heater with expansion yoke

H - Electricity

05

B

309/37

H05B 3/82 (2006.01) F02N 19/02 (2010.01)

Patent

CA 1135757

Case 2693 ENGINE BLOCK HEATER WITH EXPANSION YOKE ABSTRACT OF THE DISCLOSURE An engine block heater adapted for insertion through an opening in the block wall of an automobile engine has a novel yoke assembly for securing the heater within the opening to the block wall. The yoke assembly includes a pair of wing members each having one end thereof abutting the inner surface of the heater. The wing members are hinged to a pressure bar such that each wing member is pivotal about an end portion of the pressure bar in the plane of the bar. A screw passing through a central opening in the heater is connected to the pressure bar. Upon insertion of the heater in the block the screw is tightened to draw the pressure bar towards the inner surface of the heater, which causes the wing members to pivot about the pressure bar. This results in those ends of the wing members that contact the inner surface of the heater being displaced toward each other across the inner surface while the other ends of the wing members are moved apart from each other until they overlie and engage peripheral portions of the engine block wall surrounding the opening.

336783

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