Abstract: The specification discloses an electromechanical time delay combination for gradually applying power to the filament of an incandescent lamp. Following actuation to the "on" state, the conduction angle gradually changes from zero to 360.degree.. Following deactuation, the conduction angle lingers at 180.degree. for several seconds before returning to the non-conduction state. A set of mechanical contacts and a potentiometer may be added to effect proportional dimming.

Abstract: The specification discloses an electronic switch for operating an incandescent lamp from a plurality of stations. A plurality of normally closed mechanical switches may be wired in series with the lamp, and electronic switch to form a single series circuit. Actuation of any single mechanical switch interrupts the power, causing the electronic switch to change its state. Additional circuitry for dimming and state preservation in the event of a complete power failure are also disclosed. The rate at which power is applied or reduced may be varied in accordance with circuit values.

Abstract: The specification discloses a switching system for operating an incandescent lamp from a plurality of stations. The controlling switch at each station is wired in series with the lamp, and other control switches to form a single series circuit. Actuation of any single control switch produces a state change in the controlling circuitry so as to cause the lamp to increase or decrease in brightness. The rate at which the increase or decrease occurs is dependent upon the circuit values.

Abstract: The specification discloses a circuit which responds to a momentary contact closure to effect a gradual change from the "off" state to the "on" state, or a delayed change from the "on" state to the "off" state. In one embodiment, two interactive circuits are utilized to effect the above results from either of two remote locations. Each interactive circuit responds to a momentary contact closure at either location.

Abstract: The specification discloses an improved circuit for effecting a gradual change in conduction angle during "turn-on" and a rapid recovery to the quiescent "off-state" following gradual "turn-off". Both the "turn-on" and "turn-off" characteristics are achieved by using a single accumulating capacitor.

Abstract: The specification discloses a low loss ballast system for reducing the electrical power required to operate fluorescent and other ionized gas lamps as well as several unique starting and operating circuits which can be used in combination with conventional as well as the low loss system described herein.

Abstract: The specification discloses a circuit which produces a gradual increase or decrease in the alternating current power applied to a series connected load. Double time constant gating circuitry and capacitor integration may be utilized in combination with self-heated thermistors to effect a gradual change in the conduction duration of a series connected control element.

Abstract: An apparatus which can be attached to a ski to fulfill three basic functions, namely: 1) as an tote for carrying the skis, 2) as a safety strap to prevent ski runaway, and 3) as a self contained lock. In addition the specification discloses a number of unique features which relate to locks, springs and ski bindings generally.