Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1996-10-22
1999-03-16
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
307 31, 307 38, 307 41, 307139, 307140, 307141, 323267, H02J 314
Patent
active
058834451
ABSTRACT:
A power sharing device is disclosed, having a primary utility in supplying power to automotive block heaters or other auto warming devices at a user selectable duty cycle of 12.5% or 25%. In a first mode, power is supplied to 4 outlets in a sequential manner, for 15 minutes each. In a second mode, power is supplied to the 4 outlets in a sequential manner, for 7.5 minutes each, followed by a period of 7.5 minutes in which power is not supplied. The user may elect to initiate a delay period, that is selectable between 1 and 2 hours, to precede the sequence of power distribution, allowing time for the car to cool before the power cycles begin. A test circuit, activated by a pushbutton, allows a user to distinguish between the periods of time when power is not being supplied to an outlet as a part of the sequential sharing of power between outlets and a circuit malfunction, such as a blown fuse.
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Paladini Albert W.
Shoop Jr. William M.
Thompson David S.
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