Alternating current time-sharing outlets and switch box
OwnerVincent Hung Nguyen, Trang Lan Doinventors
Life of this patent
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Abstract
Methods and apparatus can be used to turn an existing 240 VAC or 480 VAC/600 VAC outlet into two or more time-sharing, i.e., one operating at a time, outlets. An AC switch box with two time-sharing outlets can be made with either a mechanical switch for switching which load receives power, or automatically, by a microcomputer system, for example. In the automatic AC switch box, the non-favored outlet may be typically powered on unless a load is detected at the favored/default outlet, when power to the non-favored outlet is automatically disconnected until the load is reduced or eliminated.
Claims19
An alternating current (AC) switch device comprising:
- a housing containing a first receptacle and a second receptacle;
- and
- an automatic switch configured to deliver power to one of the first receptacle and the second receptacle, wherein
- the automatic switch includes power transistors operable to switch off power from being delivered to the second receptacle;
- the first receptacle and the second receptacle are rated at an amperage of at least 30 amperes;
- and
- a number of power transistors, a type of power transistor and a size of power transistor is selected to provide switching for electrical loads, including an amperage of at least 30 amperes, while preventing overheating inside the housing.
An alternating current (AC) switch device comprising:
- a housing containing a first receptacle and a second receptacle;
- and
- an automatic switch configured to deliver power to one of the first receptacle and the second receptacle, wherein
- the automatic switch includes power transistors operable to switch off power from being delivered to the second receptacle;
- and
- at least a portion of the power transistors are connected in parallel.
Dependencies are inferred from the claim text.