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US 2002/0170138 A1Published application
Vacuum cleaner with thermal cutoff
AssigneeWhite Consolidated Industries, Inc.
InventorsJohn A. Huebsch, Christer T. Kontio, William R. Reimer
Life of this patent
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Abstract
A vacuum cleaner having a thermal cutoff assembly. The assembly includes a temperature sensor disposed proximate to a motor of the vacuum cleaner. When the temperature sensor reaches a predetermined temperature, a switching element in the assembly disconnects power shutting off the vacuum cleaner. The vacuum cleaner cannot be restarted until its power source has been manually disconnected and reconnected.
Claims2
A vacuum cleaner comprising:
- a lower base unit;
- an upper enclosure being pivotable with respect to the lower base unit;
- a motor disposed within the lower base unit;
- a power cord having a first end affixed to at least one of said upper portion and said base unit, and a second end adapted for connecting to an electrical power source;
- electrical conductors extending between said first end of said power cord and said motor, said electrical conductors defining an electrical power circuit to said motor;
- and
- a thermal cutoff assembly including a temperature sensor disposed proximate to said motor for measuring the temperature of said motor, said thermal cutoff assembly further including a switching element in electrical association with said electrical conductors, wherein upon the temperature sensor sensing a temperature greater than a predetermined temperature setpoint, said switching element opens said electrical power circuit;
- wherein once said switching element has opened said electrical power circuit, said switching element closes said electrical power circuit only upon the temperature sensor sensing a temperature less than the predetermined temperature setpoint and after said thermal cutoff assembly has been disconnected from said electrical power source.
5 more elements
A vacuum cleaner comprising:
- a housing;
- a motor disposed within the housing;
- a power cord having a first end affixed to the housing, and a second end adapted for connecting to an electrical power source;
- electrical conductors extending between said first end of said power cord and said motor, said electrical conductors defining an electrical power circuit to said motor;
- and
- a thermal cutoff assembly including a temperature sensor disposed proximate to said motor for measuring the temperature of said motor, said thermal cutoff assembly further including a switching element in electrical association with said electrical conductors, wherein upon the temperature sensor sensing a temperature greater than a predetermined temperature setpoint, said switching element opens said electrical power circuit;
- wherein once said switching element has opened said electrical power circuit, said switching element closes said electrical power circuit only upon the temperature sensor sensing a temperature less than the predetermined temperature setpoint and after said thermal cutoff assembly has been disconnected from said electrical power source.
4 more elements
Dependencies are inferred from the claim text.