Abstract: A system for adjusting and maintaining cruising speed for automobiles employs electronic circuitry connected to the engine ignition system for generating a voltage proportional to engine speed. A manually actuated switch allows the vehicle operator to choose a cruising speed by storing the speed related signal in a memory. A comparator then receives the stored signal and the instantaneous speed signal and generates an error signal to control a bi-directional drive connected to the vehicle accelerator pedal through a tension member. A solenoid actuated clutch in the drive system for the tension member is energized when the operator sets the cruising speed and is deenergized when the vehicle is braked, when the engine speed falls below a predetermined value, or when the engine ignition or the speed control are turned off.

Abstract: A device for effectuating an automatic transcutaneous affect by applying energy to a living organism includes a self-contained power supply disposed in a housing. A probe circuit is utilized to detect points of high and/or low resistance in the organism. When such points are realized an audio emission begins thereby signalling the point. The device, also, includes a treatment circuit which applies either electrical, light or magnetic energy to the detected point. The present device utilizes interlocking logic circuits to preclude more than one mode being carried out at any one time.

Abstract: A control for brakes in trailer vehicles comprising a circuit providing pulsed signals to the brakes. It is preferred that the time or width of each pulse is equal but the frequency of brake pulsing is increased in accord with inertially sensed stress. The frequency of the signal is directly related to the movement of a dampened cantilever beam which normally blocks the passage of light to a light sensitive target or monitor but wherein the passage of light increases and is attenuated by the beam as the beam moves, under inertial imbalance, to permit added light to be sensed. In addition, the control circuit, vulnerable to short circuits in the vehicle circuit from control element to brakes, is continuously monitored by a disconnect element which senses the existence of the short circuit and accomplishes a disabling of current through the control circuit at a threshold to avoid injury to the control circuit.

Abstract: A control for brakes in trailer vehicles comprising a circuit providing pulsed signals to the brakes. It is preferred that the time or width of each pulse is equal but the frequency of brake pulsing is increased in accord with inertially sensed stress. The frequency of signal is directly related to the movement of a dampened cantilever beam which normally blocks the passage of light to a light sensitive target or monitor but wherein the passage of light increases and is attenuated by the beam as the beam moves, under inertial imbalance, to permit added light to be sensed. In addition, the control circuit, vulnerable to short circuits in the vehicle circuit from control element to brakes, is continuously monitored by a disconnect element which senses the existence of the short circuit and accomplishes a disabling of current through the control circuit at a threshold to avoid injury to the control circuit.