Automatic shut-off and alarm for electric heater
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 9, 1991
Grant Date -
N/A
app pub date -
Oct 21, 1988
filing date -
Oct 21, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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