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US 5,304,782 AGranted
Protection circuit for electric toaster
AssigneeBlack & Decker Inc.
InventorsJohn D. McNair, Alk P. Cheah
Life of this patent
Estimating the term…
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AssigneeBlack & Decker Inc.
InventorsJohn D. McNair, Alk P. Cheah
Estimating the term…
An electric toaster that enables power to be disconnected from the heating elements upon completion of a toasting cycle regardless of the position of the main product supporting the carriage in the toasting compartment. The toaster has an electromagnetic latch and an auxiliary member carried by the main carriage which is movable relative to the main carriage. The auxiliary member is urged by biasing member to move in a direction away from the electromagnetic latch but able to be held thereby when the latch is activated. The auxiliary member also is arranged to close main power supply contacts to supply power to the heating elements when the auxiliary member is held by the latch, but to open said main supply contacts when the auxiliary member moves away from the latching means under action of the biasing member. The toaster may also include a sensor to sense abnormal conditions in the toaster to disconnect power from the heating elements when such abnormal conditions occur.
An electric toaster comprising a toasting compartment, electrically operated heating element means adapted to direct heat to said toasting compartment when activated, electric power supply means including switch means adapted to provide power to said heating element means during a toasting cycle, product supporting carriage means adapted to move a product to be toasted into said toasting compartment, latching means to retain said carriage means in a toasting position during said toasting cycle, said carriage means including an auxiliary member carried thereby, said auxiliary member being adapted to activate said switch means to close said switch means upon moving in a first direction and to open said switch means upon moving in a second direction, and sensor means adapted to detect any abnormal condition during said toasting cycle in response thereto move said auxiliary member in said second direction to open said switch means.
An electric toaster comprising a toasting compartment, electrically operated heating means adapted to direct heat to said toasting compartment when activated, electric power supply means including switch means adapted to provide electric power to said heating element means during a toasting cycle, product supporting carriage means adapted to move a product to be toasted into said toasting compartment, latching means to retain said carriage means in a toasting position during said toasting cycle, said carriage means including an auxiliary member carried thereby in a manner permitting movement relative to said carriage means, said auxiliary member being adapted to activate said switch means to close said switch means upon moving in a first direction and to open said switch means upon moving in a second direction, and biasing means adapted to urge said auxiliary member in said second direction.
Dependencies are inferred from the claim text.