Drying and gas or vapor contact with solids – Apparatus – For hair on head
Patent
1996-11-19
1999-01-12
Bennett, Henry A.
Drying and gas or vapor contact with solids
Apparatus
For hair on head
431344, 126409, A45D 0000
Patent
active
058572627
ABSTRACT:
A cordless, hydrocarbon fuel powered hairdryer. The invention incorporates a novel electronic control system which evaluates the thermal and electrical conditions within the hairdryer during its operation. Two fuel flow valves are provided. The first fuel flow valve is mechanically actuated and opens and closes the valve in the hydrocarbon fuel cartridge. The second fuel flow valve is a solenoid valve that cannot open without a predetermined voltage being supplied. Application of the predetermined voltage will allow gas to flow through this second valve and into the area where the fuel is ignited. Only when both valves (the mechanical and the solenoid) are open, can fuel flow. A microcontroller monitors the temperature conditions in the combustion area, and controls system conditions such as power to the solenoid valve and to the fan motor to prevent uncombusted gas from building up and presenting a safety hazard.
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Bonnema James
Shapiro Steven
Winkler Karl
Bennett Henry A.
Gravini Steve
The Schawbel Corporation
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