Push-button switch device
AssigneeShinkoh Electric Co., Ltd.
InventorHeihachiro Umemura
Life of this patent
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Abstract
A switch unit receive an AC signal and includes first and second push-button switches and at least one rectifying diode. Each of the first and second push-button switches is a 2-stage switch or a 3-stage switch. The first and second push-button switches and the at least one rectifying diode are configured such that the switch unit selectively generates any one of a non-signal, a positive half-wave rectified signal, a negative half-wave rectified signal and a full wave alternating signal to first and second outputs. The first and second outputs of the switch units are transmitted to an output unit by way of two transmission wires, respectively. The output unit discriminates the switching state of the first and second push-button switches based on the signal received from the switch unit via the two transmission wires.
Claims21
A push-button switch device comprising:
- a switch unit, having an output including first and second output terminals, which receives an AC signal and includes first and second push-button switches and a rectifying circuit coupled to said first and second push-button switches, wherein each of said first and second push-button switches is one of a 2-stage switch and a 3-stage switch, and wherein said first and second push-button switches and said rectifying circuit of said switch unit are configured such that said switch unit selectively generates at least any one of a null-signal, a positive half-wave rectified signal, a negative half-wave rectified signal and a full-wave alternating signal to said output according to a switching state of each of said first and second push-button switches;
- first and second transmission wires coupled to said first and second output terminals of said switch unit, respectively.
Dependencies are inferred from the claim text.