Design & Manufacturing Corporation

Paul R Scheuer

Karmen D Cox

Steven B Sample

A cycle-select switching system for automatic appliances and the like of the type for selectively performing any one of a plurality of distinct operating cycles. The switching system comprises selection means having a plurality of outputs, each corresponding to one of the operating cycles, and a momentary contact switch for producing a control signal of variable time duration. The selection means is responsive to the control signal by sequentially advancing to the output defined by a selected time duration of the control signal and thereby initiating the operating cycle corresponding thereto.

Electronic cycle-select switching system

A circuit for the automatic starting of an induction motor of the type having a sensing means for producing a signal proportional to the main winding current and control means for allowing current flow through a start winding only when energized by a start winding control signal. The starting circuit includes means for continuously producing a variable threshold level which is proportional to a condition capable of affecting the current level in the main winding and which defines an adjustable threshold switching level. A comparison means continuously compares the adjustable threshold switching level to the signal proportional to the main winding current and, whenever the latter signal exceeds the former, the comparison means generates a start winding control signal which activates the start winding control means thereby establishing current flow through the start winding. When the main winding current decreases to a sufficient extent, the comparison means is characterized by the absence of a start winding control signal whereby the start winding control means will block the flow of current through the start winding.

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West Lafayette, IN, United States of America

Paul R Scheuer