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US 4,883,983 AGranted
Switching system for plural load circuit
AssigneeRobertshaw Controls Company
InventorsDavid T. Llewellyn, William J. Lichtenberger
Life of this patent
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AssigneeRobertshaw Controls Company
InventorsDavid T. Llewellyn, William J. Lichtenberger
Estimating the term…
A cyclable electrical switch construction, a system utilizing the switch construction and methods of making the same are provided, the cyclable electrical switch construction comprising a housing having a cyclable electrical switch therein and a rotatable actuator shaft that extends from the housing for setting the duty cycle of the switch in relation to the rotational position of the shaft in either rotational direction thereof from an "off" position thereof, and an electrical switch unit being carried on the housing and having structure operatively interconnected with the shaft so that the switch unit is actuated from one condition thereof to another condition thereof only when the shaft is rotated from the "off" position thereof in one rotational direction thereof. The cyclable electrical switch is used in a plural load circuit, preferably, as a control of a dual wattage heating element of a cooking unit.
In a cyclable electrical switch construction that comprises a housing means having a cyclable electrical switch means disposed completely therein and a rotatable actuator shaft that extends from said housing means for setting the duty cycle of said switch means in relation to the rotational position of said shaft in either rotational direction thereof from an "off" position thereof, the improvement comprising an electrical switch unit carried on said housing means and being completely external to said housing means and separate from said switch means while having actuating means operatively interconnected with said shaft so that said switch unit is actuated from one condition thereof to another condition thereof only when said shaft is rotated from said 37 off" position thereof in one rotational direction thereof.
In a system comprising a first load means, an electrical power source, and a cyclable electrical switch construction operatively interconnected to said first load means and said source, said cyclable electrical switch construction comprising a housing means having a cyclable electrical switch means disposed completely therein and a rotatable actuator shaft that extends from said housing means for setting the duty cycle of said switch means for interconnecting said source to said first load means in relation to the rotational position of said shaft in either rotational direction thereof from an "off" position thereof, the improvement comprising an electrical switch unit carried on said housing means and being completely external to said housing means and separate from said switch means while having actuating means operatively interconnected with said shaft so that said switch unit is actuated from an "off" condition thereof to an "on" position there in one rotational direction thereof, and a second load means, said switch unit being operatively interconnected to said source and to said second load means to interconnect said source to said second load means only when said switch unit is in said "on" condition thereof.
Dependencies are inferred from the claim text.