Abstract: A controlled device is disclosed for allowing a parent to control the use of an appliance by a child. The system includes a plurality of user cards, one of which is assigned to each child. A control device is interconnected with the circuitry of the appliance for actuating and deactuating the controlled appliance. The amount of time allotted to each child can be stored in the memory of the control device. The control device is responsive to input from the children's user cards and actuates the controlled appliance when the time allotted to such user is greater than zero. Once the controlled appliance is actuated, the time allotted to the then current user is decremented until the appliance is deactuated. When the time alloted to the then current user reaches zero, the control device will automatically deactuate the controlled appliance and that child cannot use the appliance until more time is allotted to him or her.

Abstract: A wallet is disclosed which incorporates an electrical alarm circuit for signalling that e.g. a credit card has not been properly returned to its compartment in the wallet. The electrical current is transferred from compartment to compartment, and from the battery and buzzer portion, by means of contact pads and zones which come together when the wallet is closed. The need to conduct electricity through the hinge area is eliminated.

Abstract: A bicycle which sounds an audible signal on motion of the bicycle is described. The alarm system is totally self contained and appropriately attached to the frame of the bicycle. It contains critical delay circuits which gives the bicycle rider the opportunity to arm and disarm the alarm by a key switch without tripping the audible alarm. Additional circuitry prevents the audible alarm from remaining in an on state indefinitely after the alarm is tripped, thereby conserving battery power. Said bicycle includes a motion detection switching means, alarm timer means, limit means and oscillator means all conveniently contained in a compact package. Recent progress in the development of energy efficient audible alarms assures a loud signal on the impermissible motion of the bike.

Abstract: A receiver for receiving angle-modulated radio signals includes detecting occurrence of interference from adjacent channels when an evelope of demodulated signal of the received radio signals exceeds a threshold. This receiver improves the quality of received signals, attenuates them, limits the amplitude thereof, or blocks them and to insert interpolation signals in replacement thereof when the detection output is transmitted thereto.

Abstract: A transceiver interference cancellation system having an adaptive processor for receiving signals from a number of antennas and for suppressing particular signals from the antennas. The system includes a code generator which controls a switch to provide transmitted signals with a predetermined pulse code. Means including a code correlator are provided for detecting the pulse code in received signals and for controlling the operation of the adaptive processor such that wanted signals when identified are not suppressed.

Abstract: A warning device for generating a warning signal when the driver of an over the road tractor-trailer vacates the cab without setting the parking brake. A pressure sensor is used to sense the pressure on the air ride seat and to close an electric switch element whenever the seat is unoccupied. Another switch element is closed when the parking brake is in its release position. The two switch elements are arranged in series with a warning buzzer in a battery powered electric circuit to energize the buzzer if the seat is vacated without the parking brake having been set.

Abstract: A communication system with six simultaneous independent inbound channels is disclosed which uses the voltage waveform of an electricity distribution network as a carrier. The manner in which the inbound channels are identified as well as how various sets of such independent channels can be found is disclosed. Identification of sets or groups of such independent channels involves identifying all potential channels and calculating the detection algorithm for each. Pure pulse patterns for binary "1"s for each channel are then multiplied by the detection algorithms for every channel to generate a matrix whose elements include the application of all the detection algorithms to all the aforementioned pulse patterns. Examination of qualifying elements of the matrix allow the identification of sets of mutually non-interfering channels.

Abstract: A remotely activated timer alert system device is provided, which is particularly suitable for controlling coffee breaks and lunch breaks when used in conjunction with the catering truck industry. This timer alert system device, when remotely activated by a transmitting device, would cause a sensible alert signal of a predetermined duration to signal the beginning and the end of a preselected time interval.

Abstract: Improvement to a fire alarm system that enables a city tie line connection to be made selectively. Terminal units at a variety of locations are coupled or connected in separate, independent loops within the system such that serial synchronous power transmission and data communication is effectuated over the individual loops. A master controller at a central location is programmed to recognize that certain terminal units connected in particular loops of the system are in alarm states and to cause a city tie line connection to be made, selectively, whereby a municipal fire department or the like is informed of the particularly critical alarms emanating from those terminal units.

Abstract: In an exemplary embodiment, a ring net work is of a multiple petal configuration with the petal path to and from each node extending through a petal isolator at a hub location. A set of terminals is provided at the hub location for each node. An activity detector is coupled to a terminal of each set for detecting the normal network signals returning from a respective node, and a bypass controller is connected to another terminal of each set for sensing such signals transmitted to a respective node. The controller operates to sense separate signal bursts, and to bypass the set of terminals associated with a give node in the absence of signal detection by the associated signal detector after a selected number of separate signal bursts have been transmitted to the node. The timing relationships can be adjusted to accommodate a ring network where signals are transmitted about a ring with signal amplification and undelayed signal transmission at the respective nodes.

Abstract: A brake light enhancer circuit which may be readily connected to the brake light circuit of a conventional motor vehicle causes the brake lamps to be flashed a predetermined number of times when the brake pedal is initially depressed and thereafter causes the brake lights to be steadily illuminated so long as the brake pedal remains depressed. If, however, a turn signal indicator has been activated before or during the application of the brake pedal, the brake light enhancer circuit does not flash the rear brake lamps, but rather illuminates them continuously as long as the brake pedal is depressed. The circuit is configured so that normal brake light operation will not be impaired upon misconnection to the vehicle or failure or any component of the brake light enhancer circuit itself.

Abstract: An improved fault detector for a vehicle air bag safety system including a balanced wheatstone bridge having a squib resistor at one arm thereof and a G sensor at another arm thereof. Wherein, outputs of the wheatstone bridge are fed alternatively to a single DC amplifier circuit by utilizing switching circuits and a voltage difference of the alternative outputs derived from the DC amplifier circuit is measured for detecting any transition or a fault of the squib resistor without any influence of the input offset voltage for the DC amplifier circuit and of dispersions in circuit constant as well as components of a measuring system, thereby eliminating the precise adjustments which are required in the prior art system during the production stage for providing an inexpensive and highly reliable fault detector.

Abstract: A multimedia information exchanging system in a digital exchange network that has an exchange system in which channels are selectively assigned for communication among a plurality of subscribers. This system has many pieces of subscriber line terminating equipment each of which is provided on the subscriber side of each subscriber line and which connects at least one terminal device to the subscriber line through subchannels.

Abstract: In a converter console for converting a portable radio to mobile operation, a sleeve for receiving the portable radio and improved mounting apparatus which positions the sleeve so the portable can be easily inserted and smoothly moves the sleeve into a loaded position in which the portable is connected for control by the console and for receiving power from the vehicle. The mounting apparatus holds the various contacts firmly together to prevent contact chatter. Also included are locking apparatus which prevent relative movement between the portable/sleeve and the housing to eliminate contact chatter under extreme vibration and reduce theft and improper use.

Abstract: A trailer stability monitor for tractor-trailer vehicles including a motion sensor and signal responsive r.f. transmitter responsive thereto mounted on the trailer and a r.f. signal receiver coupled to alarm means and mounted on the tractor, preferably in the cab thereof, for receiving the signal from said transmitter and causing an alarm to warn the operator of the tractor-trailer of conditions conducive to rollover to permit remedial measures to be undertaken to avoid such incident. The motion sensor includes a pair of angular mounted normally open mercury switches arranged to detect lateral forces to the right or left to a degree conducive to rollover. A vertically oriented normally closed mercury inertia switch is connected in series with the pair of angular mounted parallel connected switches to momentarily disable the circuit to prevent spurious signals from bumps. The switch array is connected in series with a battery and a lower power r.f.

Abstract: An early warning system for anticipating vehicle braking is provided wherein first and second switches are disposed to monitor a minor depression and substantial depression, respectively, of a vehicle accelerator. The relative time intervals associated with the first and second switches being in closed and opened conditions are time and compared to predetermined intervals defining instances when early warning activation is appropriate and inappropriate. A running light typically included to operate whenever the brake light is not operating, is controlled to blink as the warning signal indicator.

Abstract: A local bus network is constructed in a star configuration and comprises transmission direction-associated star lines, the transmission channels leading from the peripheral stations to the central star point being respectively monitored at the star point for the appearance of a channel state signal transmitted from the respective station and identifying the transmission channel as busy or free. The useful signal transmitted in the transmission channel is thereby only forwarded after recognition of a "busy" signal, whereas the appertaining transmission channel is otherwise inhibited at the central star point at the receiver.

Abstract: A control device for a vehicle a.c. generator comprises a rectifier connected to an armature coil of the a.c. generator, and having a main rectification output terminal for outputting the rectified output to a battery, and an auxiliary rectification terminal connected to one end of the field coil of the generator; a voltage regulator which turns on and off the field current by means of a switching element connected to the other end of the field coil to adjust the output voltage from the generator at a predetermined level; an overvoltage limiting unit including a switching element which conducts when the output voltage from the generator exceeds a predetermined overvoltage value; and a switching unit which is energized by the conduction of the switching element in the overvoltage limiting unit to ground the auxiliary rectification terminal of the rectifier.

Abstract: The present invention pertains to a conferencing network. The conferencing network is comprised of a ring array comprised of K conferencing modules, where K is greater than or equal to 3 and is an integer. The K conferencing modules are capable of being in desired states. The conferencing network also includes means for controlling the ring array such that the conferencing modules are placed in the desired states. Switching stages comprised of switches can also be implemented into the conferencing network.

Abstract: Acceleration speed sensor (3) and trigger means (4) for separating air-bag includes a Wheatstone bridge with reference resistors, (7A, 8A), whereby when trouble occurs, the balance of Wheatstone bridge is lost and current flows to current transformer (12), wherein D.C. noise component is isolated by the current transformer (12) and A.C. noise component is attenuated by phase detection by using reference pulse signals (V.sub.0).