Electrothermal heating device
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United States of America Patent
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May 16, 2017
Grant Date -
Sep 12, 2013
app pub date -
Mar 8, 2013
filing date -
Mar 9, 2012
priority date (Note) -
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Abstract
An electric heating device includes a box-shaped plug socket provided with a socket-side electroconductive part electrically connected to an electric heater; a power source plug provided with a plug-side electroconductive part electrically connectable to the socket-side electroconductive part and attachable to and detachable from the plug socket; a movement-restricting mechanism for restricting the movement of a protective member both toward and away from a socket-side electroconductive part in a protected state in which the protective member closes an opening of the plug socket and the socket-side electroconductive part are positioned within an interior space; and a switching mechanism for switching the protective member from a restricted movement state into a restriction released state, in which the restriction of movement by the movement restriction mechanism is released, as the power source plug is inserted into the plug socket.
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