Electric iron having safety cutoff switch and temperature indicator
AssigneeHamilton Beach Inc.
InventorsAllen S. Borsari, Stanley J. Brym, Laura A. Markure, Ronald G. Arpino
Life of this patent
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Abstract
An electric iron is provided with an orientation-detecting switch and a timing circuit, which, after the iron is unmoved in the horizontal or vertical positions for preset times, respectively, activates a heating resistor in the iron to trigger a manually resettable thermostatic cutoff switch. The iron also includes a temperature-sensing resistor and a potentiometer in circuit with a comparator and indicator means, whereby when the temperature reaches a level to which the potentiometer is set, the indicator means indicate that the iron is at ready temperature.
Claims6
An electric pressing iron having a soleplate, a main heating element in the soleplate, a manually resettable thermostatic cutoff switch in series with the heating element, said cutoff switch being manually resettable externally of the iron, a control circuit including a heating resistor mounted on the cutoff switch, an orientation responsive switch and a timing circuit including a capacitor which charges when the circuit is energized, whereby when said orientation responsive switch because of lack of movement of the iron fails to discharge the capacitor for a preset period of time, the heating resistor is activated to trigger said cutoff switch opening the main heating element of the iron.
An electric pressing iron having a soleplate, a source of electric power, a main heating element in the soleplate, a manually adjustable temperature-regulating thermostat, a manually resettable thermostatic cutoff switch, both said thermostat and said cutoff switch being connected in series with the heating element to said power source, said cutoff switch including a heating resistor arranged to actuate said cutoff switch to disconnect the heating element, an orientation timing circuit arranged to provide an output when the pressing iron remains in a preselected position for longer than a preselected time, and means responsive to the orientation timing circuit connected to supply power to said heating resistor to actuate said cutoff switch.
Dependencies are inferred from the claim text.