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US 4,743,820 AGranted
Electronic appliance control
OwnerWayne Veachinventor
Life of this patent
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Abstract
An electric appliance control system is disclosed in which a logic controlled, solid-state, electronic system is used in conjunction with a mechanical switching device in the form of a cam disc operating a plurality of cam-operated switches. The control system combines the capabilities of performing complicated and numerous operational programs with the reliability of the cam-operated mechanical switching device.
Claims4
A controller for an appliance having a plurality of selectively energizeable electromechanical components, comprising:
- input means for operator selection of a desired cycle of operation of said appliance;
- a motor;
- switching means coupled to be driven by said motor and having a plurality of timing cams on a rotating member for controlling the operation of a plurallity of switches for applying power to energize said components;
- and
- sequencing means for selectively advancing said switching means including:
- means for applying power to said motor;
- means on said rotating member for defining incremental positions around said rotating member;
- means for detecting movement of said rotating member from one of said positions to the next adjacent position;
- means separate from said rotating member and responsive to the selected operation cycle for defining a program for said rotating member which includes a series of operating steps each including a number of incremental positions to be moved and a time delay of operation;
- and
- means for operating said power applying means to move said rotating member a defined number of incremental positions in accordance with said program.
8 more elements
Dependencies are inferred from the claim text.