Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1988-10-21
1991-04-09
Envall, Jr., Roy N.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219347, H05B 102
Patent
active
050071033
ABSTRACT:
An electric heater assembly which provides an alarm warning when an abnormal condition occurs and which simultaneously disables the electrical heating elements is provided. The heater element assembly includes a heating element, an electrically actuated alarm which provides an alarm warning when an abnormal condition occurs, and a tip-over switch which provides a closed circuit when the heater is in a predetermined level position and which provides an open circuit when the heater is tilted beyond a selected tilt angle. The electrical heating element, electrically actuated alarm, and tip-over switch are electrically connected such that the tip-over switch disables the heating element and actuates the alarm when the tip-over switch is in one of the open and closed positions, and such that the tip-over switch enables the heating element and disables the alarm when the tip-over switch is in the other of the open closed positions.
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Backes Johannes B.
Jesse John F.
McCormick David D.
Tyrrell Paul C.
Envall Jr. Roy N.
Rival Manufacturing Company
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