Abstract: Each of several, typically three, microprocessorcontrolled modular electronic timers is selectably electrically pluggable to each of several, typically four, custom packaged modular switches. Each modular switch contains an indentical switch circuit that selectively implements the SPST through 4PST, the DPDT, or the DPST switch function. Each modular timer variously provides eight on/off events, either upon five weekdays and upon two weekend days, or upon individual days. Each modular timer may skip timed events during a one to seven day period. An astronomical timer generates an on/off signal at local sunrise and sunset without reference to ambient light conditions. Each timer is readily programmed, and toggled in its on/off signal state, by pushbutton switches. A comprehensive display shows current programmed data and on/off signal status. Each modular switch typically has two pairs of relays that are oppositely controlled.

Abstract: A three position slidable switch for use in a portable, rechargeable electrical device includes ON, OFF, and CHARGE positions. In the ON position a rechargeable battery is coupled in circuit with the device for the operation thereof. In the OFF position the battery is electrically decoupled from the device which is in an OFF state. In the CHARGE position the battery is coupled to a pair of prongs adapted to be plugged into an electrical outlet. Displacement of the switch to the CHARGE position rotates the prongs to an extended position to permit the battery to be recharged by means of a conventional AC outlet. In the ON and OFF positions of the switch, the prongs are retracted within the switch assembly. The switch includes detent means in each of the three aforementioned positions to reduce the possibility of inadvertent re-positioning of the switch and to provide a tactile indication to the user of the switch position.

Abstract: A three position slidable switch for use in a portable, rechargeable electrical device includes ON, OFF, and CHARGE positions. In the ON position a rechargeable battery is coupled in circuit with the device for the operation thereof. In the OFF position the battery is electrically decoupled from the device which is in an OFF state. In the CHARGE position the battery is coupled to a pair of prongs adapted to be plugged into an electrical outlet. Displacement of the switch to the CHARGE position rotates the prongs to an extended position to permit the battery to be recharged by means of a conventional AC outlet. In the ON and OFF positions of the switch, the prongs are retracted within the switch assembly. The switch includes detent means in each of the three aforementioned positions to reduce the possibility of inadvertent re-positioning of the switch and to provide a tactile indication to the user of the switch position.