Abstract: A remote control system which includes (a) a receiver unit adapted to be fixedly mounted on a motor vehicle leaving at least one door lock with a first locked condition and a second unlocked condition and having circuitry for receiving a coded signal including a code portion of binary bits, memory circuitry for storing a first code of binary bits, means for comparing the code portion of a received coded signal with the first code and circuitry for shifting the controlled device to one of the conditions upon the comparison match between the code portion of a received signal and the stored first code and (b) a transmitting unit for transmitting the stored second code of binary bits when the door lock is to be shifted into one of its conditions.

Abstract: A remote control system which includes (a) a receiver unit adapted to be fixedly mounted on a motor vehicle having at least one door lock with a first locked condition and a second unlocked condition and having circuits for receiving a coded signal including a code portion of binary bits, memory circuits for storing a first code of binary bits, circuits for comparing the code portion of a received coded signal with the first code and circuits for shifting the controlled device to one of the conditions upon the comparison match between the code portion of a received signal and the stored first code and (b) a transmitting unit for transmitting the stored second code of binary bits when the door lock is to be shifted into one of its conditions.

Abstract: A remote control system which includes (a) a receiver unit adapted to be fixedly mounted on a motor vehicle having at least one door lock with a first locked condition and a second unlocked condition and having means for receiving a coded signal including a code portion of binary bits, memory means for storing a first code of binary bits, means for comparing the code portion of a received coded signal with the first code and means for shifting the controlled device to one of the conditions upon the comparison match between the code portion of a received signal and the stored first code and (b) a transmitting unit for transmitting the stored second code of binary bits when the door lock is to be shifted into one of its conditions.

Abstract: A transmitter is provided for transmitting a remote binary control signal to a vehicle-mounted receiver having a stored unique security code, a security code comparator, circuitry for powering up and activating the code comparator upon receipt of a signal including an integral power up initiation code, and circuitry for outputting a vehicle function command corresponding to the function code portion of a received signal having the matching unique security code. The transmitter stores a unique security code comprising a sequence of binary bits and has a plurality of manual switches each operable to transmit an integral three-part signal comprising a sequence of binary bits including the power up initiation code, the unique security code, and a selected one of a plurality of function codes. Preferably, the power up initiation code includes at least two binary bits, the unique security code includes at least twenty-four binary bits, and the function codes each include at least three binary bits.

Abstract: A remote control system which includes (a) a receiver unit adapted to be fixedly mounted on a motor vehicle having at least one door lock with a first locked condition and a second unlocked condition and having means for receiving a coded signal including a code portion of binary bits, memory means for storing a first code of binary bits, means for comparing the code portion of a received coded signal with the first code and means for shifting the controlled device to one of the conditions upon the comparison match between the code portion of a received signal and the stored first code and (b) a transmitting unit for transmitting the stored second code of binary bits when the door lock is to be shifted into one of its conditions.

Abstract: A remote control system which includes (a) a receiver unit adapted to be fixedly mounted on a motor vehicle having at least one door lock with a first locked condition and a second unlocked condition and having means for receiving a coded signal including a code portion of binary bits, memory means for storing a first code of binary bits, means for comparing the code portion of a received coded signal with the first code and means for shifting the controlled device to one of the conditions upon the comparison match between the code portion of a received signal and the stored first code and (b) a transmitting unit for transmitting the stored second code of binary bits when the door lock is to be shifted into one of its conditions.

Abstract: There is provided an improvement in a seat belt retractor mechanism of the type having a seat belt reel rotatably mounted in a support frame adapted to be assembled on a movable door of a vehicle, wherein the reel has at least on one end a generally circular ratchet plate for engaging a locking element movably mounted on the support frame between a first position allowing the reel to payout the belt freely and a second position engaging the ratchet plate to hold the reel against rotation to payout the seat belt. An inertia sensing element carried by the support frame shifts this locking element into the locked position upon being moved by inertia forces caused by rapid acceleration or deceleration of the vehicle to which the mechanism is mounted. In addition, an electromagnet is employed for increasing the amount of inertia force needed to move the inertia sensor element during such rapid changes in speed of the vehicle.