Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1996-11-18
1998-06-02
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
307115, 307132E, 3071414, 364492, 361191, 134 57D, 134 58D, H02J 314
Patent
active
057604932
ABSTRACT:
The invention is a dishwasher and a control therefore in which the control comprises multiple parallel loads, including a motor. The motor and the other loads are connected to one side of a power source by a motor relay, which is controlled by a processor. All the loads, except the motor, are connected to the other side of a power source by semiconductor switches with each load having a corresponding switch. The motor has an unswitched connection to the other side of the power source. The power to all the loads, including the motor, is controlled by the motor relay. If one of the switches fails in such a way that the circuit for one of the loads is closed, then the load will be shut off when the motor relay is opened to shut off power to the motor. Thus, it is possible to prevent the failed load circuit from operating during the entire wash cycle.
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Ashton Robert H.
Meyers Theodore F.
Mundy David W.
Outcalt Alan G.
Roth Ryan K.
Paladini Albert W.
Rice Robert O.
Roth Thomas J.
Shoop Jr. William M.
Van Winkle Joel M.
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