Abstract: A mechanical pulley apparatus for use as part of a vehicular speed control system. A cable is attached to the pulley and the vehicle's throttle so that, when the pulley is rotated by the final ouput element of the control system, movement of the throttle is effected. Incorporated within the apparatus are features which prevent kinking of the cable when the throttle is operated manually and which compensate for the non-linear characteristics of the vehicle's throttle control.

Abstract: An electric actuator apparatus particularly suitable for use as part of an automotive air conditioning system. The apparatus uses a direct current motor to drive a final output element in accordance with an input voltage signal. The apparatus is inherently protected against stalled conditions and no limit switches are required. The apparatus is self-adapting to different physical environments which define the range of travel of the final output element. The apparatus may be operated as a two-position actuator or, with the addition of a feedback signal corresponding to the postion of the final output element, may be operated as an infinite position or multi-position actuator.

Abstract: An electromagnetic clutch apparatus for providing a reversible mechanical linkage between a driving motor and its mechanical load and which is particularly well suited for use as part of an electrically actuatable automotive cruise control system. The apparatus is inherently self-disengaging, thereby limiting the maximum mechanical load against which the driving motor may operate. The apparatus is designed to be placed between the final output gear of a gear train and the engine throttle and yet overcomes the problems associated with such a placement because the mechanical torque which the clutch is designed to transmit is not directly related to the electromagnetic force required to keep the clutch engaged.

Abstract: A cruise control system of the type utilizing an electrically operated DC servo motor to move an element that varies the fuel-air mixture of a motor vehicle engine to control the speed of the motor vehicle is provided with apparatus for detecting the limit positions of the element and to modify the electric current supplied to the motor accordingly.

Abstract: Cruise control system and method for maintaining a vehicle such as an automobile at a desired speed. An overspeed sensor monitors the engine speed and disengages the system in the event of a sudden increase in the engine speed, as occurs, for example, when the clutch of a vehicle having a manual transmission is disengaged.

Abstract: System for controlling the speed of a vehicle such as an automobile. The operator selects the desired speed, and thereafter the system brings the vehicle to the desired speed and maintains it at that speed. The system can be calibrated for any given vehicle, and it cannot be engaged until the vehicle is moving at a predetermined percentage or fraction of the desired speed. The system can be disengaged in a number of ways to return full control of the vehicle to the operator, and redundant circuits are employed to assure disengagement upon application of the brakes. As the desired speed is approached, the amount of correction is decreased to assure a smooth, positive transition to the desired speed.

Abstract: A method of continuously making a composite tape transducer consisting of the steps of electrically charging dielectric layers on opposite sides of a conductive inner strip to form electrets, applying wider outer laminates symmetrically to opposite sides of the electret-covered inner strip and sealing together the marginal edge portions of the outer laminates to enclose the electret-covered inner strip.

Abstract: System for controlling the speed of a vehicle such as an automobile. The operator selects the desired speed, and thereafter the system brings the vehicle to the desired speed and maintains it at that speed. The system can be calibrated for any given vehicle, and it cannot be engaged until the vehicle is moving at a predetermined percentage or fraction of the desired speed. The system can be disengaged in a number of ways to return full control of the vehicle to the operator, and redundant circuits are employed to assure disengagement upon application of the brakes. As the desired speed is approached, the amount of correction is decreased to assure a smooth, positive transition to the desired speed.

Abstract: Apparatus for continuously producing an elongated composite tape transducer having an inner laminate with a conductive dielectric-covered strip and two outer laminates each with a conductive foil comprises two reels containing the outer laminates and one reel containing an inner laminate, a station for electrically charging the dielectric layers on opposite sides of the inner strip, a mold for applying and sealing the outer laminates to opposite sides of the inner laminate to form the composite transducer, and a mechanism for pulling the three laminates through the apparatus. The lead end of the inner strip is electrically grounded. The charging station has two electrodes connected in parallel to a source of high DC voltage and physically positioned to make electrical contact with the dielectric layers, respectively, on opposite sides of the inner strip.

Abstract: A capacitance intrusion detection system for use with a metal object or objects insulated from ground comprises a circuit for cyclically charging and discharging the object at a relatively low frequency, for example, less than 500 Hz, and simultaneously integrating the charge on the object to develop a DC voltage proportional to the capacitance of the object. The integrating network is AC coupled to a bandpass filter which passes signals having frequencies corresponding to changes in capacitance of the object caused by an intruder and these signals are applied to a threshold circuit for activating an alarm when an intrusion occurs. Tamper alarm circuits are provided to detect unauthorized disconnection of any portion of the protected object (decrease capacitance) or the addition of capacitance in an attempt to defeat the system.