Abstract: A conduit assembly which has an inner sleeve and outer sleeve which are proportioned to be concentrically mounted, each of which has a longitudinal slot of approximately the same width is disclosed. The conduits are circular, and a detent is provided on the larger of the conduits to accept and nestingly receive the slot of the smaller conduit when the same is rotated to form a complete circular encasement of the wires or cables which are passed through the conduits. The method of the invention contemplates the steps of forming a hole through a wall, such as a firewall, thereafter, optionally, passing the wires through, or passing the inner and outer sleeve through, and then once the wires are in place, or in anticipation of the wires being inserted, rotating the inner sleeve within the outer sleeve until the sleeve slots are approximately diametrically opposed and the central sleeve slop is secured in the detent.

Abstract: A conduit assembly which has an inner sleeve and outer sleeve which are proportioned to be concentrically mounted, each of which has a longitudinal slot of approximately the same width is disclosed. The conduits are circular, and a detent is provided on the larger of the conduits to accept and nestingly receive the slot of the smaller conduit when the same is rotated to form a complete circular encasement of the wires or cables which are passed through the conduits. The method of the invention contemplates the steps of forming a hole through a wall, such as a firewall, thereafter, optionally, passing the wires through, or passing the inner and outer sleeve through, and then once the wires are in place, or in anticipation of the wires being inserted, rotating the inner sleeve within the outer sleeve until the sleeve slots are approximately diametrically opposed and the central sleeve slop is secured in the detent.

Abstract: A device for indicating required vehicle maintainence at predetermined elapsed mileage intervals includes a clock generator which is driven by the vehicle engine ignition pulse. The clock output is fed to a frequency divider, which in turn drives four counters. Each counter includes AND logic connected to selected outputs thereof to be switched on after a pre-determined count is obtained by the counter. The AND logic of each counter drives a flip-flop which actuates an LED warning lamp. Each counter circuit includes a reset button which resets the counter and its associated flip-flop. The LEDs may be labelled with a service function which should be performed after the time interval indicated by the respective LED.

Abstract: A system for monitoring and warning of dangerous driving conditions includes sensors mounted on the vehicle for detecting excessive moisture on the road surface, freezing temperature at the road surface, vibration of the vehicle in both horizontal and vertical directions, excessive vehicular speed, and drowsiness of the driver of the vehicle. The sensors are connected through detector circuits to an audible alarm and to a visual display which warns the driver of a dangerous driving condition.

Abstract: A solar powered refrigeration unit includes an array of solar cells connected in series-parallel configuration to produce more than 12 volts dc. One side of the array is grounded, and the positive output is connected through a diode to the positive terminal of a storage battery. The diode is configured to prevent the battery discharging through the solar cell array. The array is also connectd to one side of a back to back diode arrangement, the junction of which is connected through a thermocouple to a voltage controlled relay. The refrigeration unit compressor is connected to the relay, which is switched on by the thermocouple. The back to back diode arrangement permits the greater voltage of the solar cell array or the storage battery to power the compressor.

Abstract: A system for monitoring the load carried by a vehicle includes a plurality of load cells, each extending between the load bed and the unsprung portion of the vehicle suspension. Each load cell includes an hydraulic cylinder which generates an hydraulic force corresponding to the load applied thereto. A pressure transducer is connected to the hydraulic cylinder, and the outputs of the transducers are summed and fed to an auto zeroing system. The output of this system is connected to an A/D converter, and thence to a visual display. The A/D converter output is also fed to a digital comparator which is connected to a BCD switch set to an overload level. If the load exceeds the BCD input, an overload alarm is sounded.

Abstract: A device for agitating, casting, and displaying dice includes a base housing having a pair of arms extending upwardly from opposed sides thereof. A dice housing is rotatably supported by the arms, and includes a window for viewing the dice within the housing. One of the support arms includes a lamp disposed to illuminate the interior of the dice housing, the base housing including a battery and a switch for selectively illuminating the lamp. The interior of the dice housing is lined with resilient baffled inserts extending at oblique angles to enhance the agitation of the dice as the dice housing is rotated.

Abstract: A power assisted device for cleaning toilet bowls includes an elongated stem portion having a brush at the distal end thereof, and a spray outlet port proximate to the brush. The brush is joined to a reciprocally rotating shaft extending through the stem to provide agitation to the brush. At the proximal end of the stem, a housing includes a pump connected between a liquid cleanser tank and a tubing extending from the pump to the spray outlet. The housing includes rechargeable batteries to drive the pump and a motor assembly which drives the brush.

Abstract: An ultrasonic transmitter for apprising a central burglar alarm system of an unauthorized event includes a transmitting diaphragm which is repeatedly struck by a metal ball driven by a lever. The lever is actuated by a toothed wheel which is rotated by a motor spring, the rotation being governed to maintain constant speed and constant ultrasonic pulse rate. The rotation of the wheel is stopped by a striker interfering therewith, the striker being spring biased to the non-interference position. Thus the striker must be retained in the interference position by a door, window, trip wire, or the like, and any disruption of these structures will trip the striker and cause the transmitter to generate an ultrasonic pulse train and sound an alarm.

Abstract: A device for improving the fuel economy of new or existing internal combustion engines includes a vacuum sensing switch connected to the intake manifold of the engine, and a speed-sensing electronic circuit connected to the distributor of the engine. The device also includes a solenoid operated valve interposed between the ambient atmosphere and the positive crankcase ventilation valve normally found in an internal combustion engine. The device includes a computing circuit which operates on the information from the speed sensor and the vacuum switch to actuate the solenoid operated valve when the engine is idling, accelerating, or deaccelerating. The ambient, uncarbureted air introduced through the positive crankcase ventilation valve increases the air-to-fuel ratio within the intake manifold, thereby increasing the efficiency of the engine.

Abstract: A system for providing coverage of a local event such as a sporting event for the spectators thereof includes a plurality of portable radio broadcast receivers to be carried by the spectators. A central control mobile unit provides program material relating to the event to a plurality of radio relay units disposed about the site of the event. Associated with each relay unit is a local transmitter which broadcasts to the portable receivers in the immediate area. Each relay or chain of relays may be provided with unique programmatic material which pertains to the activities in the vicinity of the associated local transmitters.

Abstract: A two-axle motor driven railway locomotive truck having a large low positioned center plate supported on a transverse bolster mounted low between the axles and carried on the truck frame by a four element focalized elastomeric secondary suspension which also transmits driving and braking forces. Elastomeric support pads are positioned low with effective compression load lines intersecting at rail height and forming obtuse included angles to substantially eliminate weight transfer effects and provide much higher stiffness in the longitudinal driving and vertical support directions than for lateral movements and fore-and-aft pitching motions between the frame and bolster. These effects combine with a soft primary spring suspension of the truck frame on the axle journals to provide low weight transfer for high adhesion performance and maintain good wheel load equalization when negotiating vertical rail irregularities, while eliminating wearing load carrying surfaces between the bolster and the truck frame.

Abstract: A theft alarm for portable articles includes a pocket-sized housing from which extend a pair of opposed, pivotting jaws. One of the jaws is secured to an extendable ratchet shaft disposed within the housing. A cam rotated by a key lock device actuates a pawl which selectively retains the ratchet to lock the jaws about the article. The cam also actuates a leaf switch which activates a motion-sensing electronic circuit. The circuit actuates a pulsating audible alarm whenever the article is moved.

Abstract: A magnetically operated lock includes a fixed lock body in which a plurality of fixed permanent magnets are disposed in a predetermined pattern. Aligned with each permanent magnet is a hole in which a movable magnet is slidably disposed, the movable magnet being oriented to be repelled by the fixed magnet. A lock shaft is pivotally secured through the lock body, and a rotor secured to the shaft is disposed adjacent to the openings of the holes receiving the movable magnets. The rotor includes a plurality of detents which receive the movable magnets, locking the shaft in a fixed position. The key comprises a disc having a plurality of magnets embedded therein and oriented to repel the movable magnets and free the rotor and shaft for rotation.

Abstract: 2. In a reflex klystron tube apparatus, means for forming a beam of electrons, a resonator means positioned along the beam path, said resonator means being apertured for the passage of the beam of electrons therethrough for electromagnetic coupling to the beam, reflector means disposed on the side of the resonator remote from said means for forming the beam of electrons, said reflector means serving for reflecting the electrons incident upon the reflecting fields of said reflector means back through said resonator means substantially along the incident beam path, said means for reflecting the electrons formed and arranged to impart a slight transverse velocity to the electrons whereby they are caused to move transversely of and out of the beam in a small number of beam transits thereby minimizing unwanted amplitude and power modulation in the output signal of the tube apparatus.