Abstract: The continuous weighing meter [according to the invention has] having a conveyor belt [(1)] driven by a motor [(3)] and running over a guide roller (4), which is loaded with bulk material via an input funnel [(6)] from a feed arrangement [(9)]. In addition to a first weighing arrangement [(11)], which determines the gross loading of the loaded conveyor belt [(1)], the continuous weighing meter has a second weighing arrangement [(15)], which determines the tare loading of the empty, but possibly dirty and inhomogeneous conveyor belt [(1)]. The weighing distances have the lengths SB [(11)] or ST [(15)] and are separated by a distance L between homologous points. The weighing results are converted to digital form in evaluation [equipments (22, 21)] units and taken to a computer [(25)] which calculates the net loading of the conveyor belt [(1)].

Abstract: In a vehicle-mounted positional information indication system, the latitude and longitude position coordinates of the present position of a working vehicle for road maintenance on which the positional information indication system 1 is mounted is computed by a GPS device based on signals received by a GPS receiver 3 through a GPS antenna 2 from GPS satellites and is transmitted to a microcomputerized circuit 4. The microcomputerized circuit 4 picks up information of and the latitude and longitude position coordinates of a corresponding marker post or road sign based on the position of the working vehicle computed by the GPS device, and transmits the picked-up information of and the latitude and longitude position coordinates of the corresponding marker post or road sign to an output device 6 and an external port 7.

Abstract: The invention relates to an internal parallel motion force sensor containing a rectangular box load body fixedly connected to a measuring transducer and an electronic evaluation unit in a gas and humidity tight manner. The load body has an axal longitudinal bore hole on one of its halves. On the other half it has a hollow bore hole coaxial thereto and which is approximately the same length, leaving a rod-shaped lever. Two identical notches in the middle of the load body are fitted with two flat parallel-moving spiral springs in two opposite lying outer surfaces. A membrane is located between the bore holes, the notches and two other notches. Said membrane acts as an elastic joint for the lever. Deformation of the load body by identical opposing forces is transmitted to the lever by the spiral springs, converted into an electric signal by the measuring transducer on the open end thereof and transmitted by the evaluation unit in digital form.

Abstract: A resonator having piezoelectric properties is tuned to respond at a specific overtone of its parallel plate resonant frequency. A channel is etched in a blank to confine the oscillations to a predefined area thereby maximizing a predetermined overtone. The position and dimension of the channel are selected to confine the oscillation to a radius that maximizes the response at a desired frequency. The desired frequency is a predetermined overtone of the fundamental frequency. The channel limits the area of oscillation of the blank. The channel may be formed using grooves or slots. The slots are arranged to form a ring. The channel may be positioned inside or outside an electrode.

Abstract: A hybrid DC motor controller is provided for driving a DC motor. A switch is connected in series with the DC motor, and a capacitor is coupled in parallel with the DC motor and the switch. The speed of the DC motor is controlled by the capacitor voltage and the duty cycle of a pulse-width modulated (PWM) signal supplied to the switch. The hybrid controller combines a motor speed control loop with a PWM optimization loop. The motor speed control loop generates a PWM signal in response to the speed of the DC motor and conducts that PWM signal to the switch to control the DC motor. The PWM optimization loop includes a controller that is responsive to the PWM signal and an AC voltage signal. This controller compares the PWM signal with a PWM signal setpoint, and drives the PWM signal toward the PWM signal setpoint by adjusting the capacitor voltage in response to the comparison between the PWM signal and the PWM signal setpoint.

Abstract: A sealing unit for sealing an opening through which a rotating part passes. A rotary ring turns within a housing when a pair of flexible rings carried by the rotary ring are turned by engagement with a rotating part. The opposed faces of the rotary rings are in sliding contact with surfaces having mineral filled low friction layers. The sliding contact between the rotary ring and the surfaces having mineral filled low friction layers is established and maintain by a spring.

Abstract: A multi-functional linear motion shaker includes a rectangular outer support frame with a tank, often referred to as a "possum belly", for receiving the incoming drilling fluid flow. A set of adjustable louvers and a tray is positioned on the side of the tank. The adjustable louvers and tray serve to screen out the larger and stickier drill cuttings or solids. A vibrating deck assembly is positioned within the outer support frame adjacent the tank and tray assembly. The vibrating deck assembly is of a double deck design whose upper and lower decks include cross members to support the mud screens. The upper and lower decks are vertically spaced apart and connected together into one unit by vertical structural members. A moveable plate is positioned on the upper deck adjacent the adjustable louvers and tray. This moveable plate can be positioned to direct drilling fluid flow to the upper deck or repositioned to redirect fluid flow to the lower deck and bypass the upper deck.

Abstract: The bulk material, the amount o which is to be determined through second-integration or time-integration, passes over a top chute onto a bottom chute which is disposed at a tilt angle and defines the velocity of the bulk material. The bottom chute channels the bulk material to a slide which has the same angle of tilt as the bottom chute. The weight components of the amounts of bulk material on the slide acting orthogonally along the direction of the slide are determined by a load-sensing device. After passing down the slide the bulk material impacts a vertically arranged deflector plate which is rigidly connected to a connecting plate, with the deflector plate at that point generating a force through its change in its pulse action which is determined by a second load-sensing device. The second load-sensing device only measures the horizontal components of this change in pulse action, and, like the initial load-sensing device, is either parallel channelled or provided with parallel channelling.

Abstract: A weigh batch blender including a hopper pivotally mounted within a housing and having two compartments between which ingredient materials which have been individually introduced into the hopper are transferred to blend the ingredient materials as the hopper is pivoted between two "mix" positions at the ends of the pivotal range of the hopper. After blending, the hopper is moved to beyond one of the ends of pivotal movement of the hopper to dump the blended ingredient material contents of the hopper.

Abstract: An arcade game including an object sensor for detecting a playing piece directed by a player. A target field receives the directed playing piece, and the sensor determines the identity and a final position of the playing piece at rest. A scoring mechanism provides a game score based on the identity and final resting position of the playing piece. Preferably, the playing piece, such as a ring or coin, engages one of multiple individual targets, such as bottles or receptacles. A return mechanism provides the playing piece to the player, and an award dispenser dispenses an award to a player based on the game score. The sensor includes a visual sensor and digital processor for validating and determining a final position of the moving playing piece by detecting visible light. The digital processor examines an image of the target field to determine and validate the identity of the playing piece, the trajectory of the playing piece, and the final position of the playing piece to determine the game score.

Abstract: A light guide receives light reflected from an object, such as a moving ball in a game, and directs the light to a charge coupled device. Light sensitive pixels of the charge coupled device detect the intensities of red, green, and blue wavelengths and provides intensity levels to an averager which averages the intensities. Ratios between the red, green, and blue digital signal intensities are compared to determine the predominant color in the guided light and hence the predominant color of the object. Multiple light guides can be used to sense the color of objects, where each light guide can direct light to a different subset of pixels on the charge coupled device.

Abstract: A plank for loading surfaces of a picnic bench, bleacher, boat dock and the like including an elongated element formed of a synthetic resin, a plurality of elongated reinforcing bars, and structure provided for connecting the reinforcing bars to the synthetic resin element. The synthetic resin element is formed with a substantially flat web defining a load surface and an undersurface, a pair of side walls extending normally from the undersurface along the length of the element, a plurality of internal walls inward of and parallel to the side walls, and structure for restraining twisting of the reinforcing bars about their longitudinal axis during loading of the plank. The reinforcing bars support the synthetic resin element and restrict bending along the length of the element.

Abstract: A disc feeder for delivering material in controlled amounts to utilization equipment. The disc which carries material to a material discharge opening is disposed at an angle to the horizontal and the shearing baffle which controls the amount of material carried to the material discharge opening is movable from its position during normal operation to a position remote from the disc, whereby during unloading of the storage hopper the material discharges freely and quickly to a storage container. A control valve selectively directs material to one delivery conduit which leads to the utilization equipment and a second delivery conduit which leads to the storage container. The apparatus has an interlock mechanism which prevents moving the shearing baffle while material is being conducted to the utilization equipment and prevents moving the control valve to direct material to the utilization equipment while the shearing baffle is at its remote position.

Abstract: Material feeding apparatus having, as one aspect, combining the loading, feeding and refilling functions in a single, vertically disposed housing with a feeder hopper portion of the housing below a refill hopper portion of the housing and separated from the refill hopper portion by a divider wall. The passage of material from the refill hopper portion to the feeder hopper portion is through a valve and material is drawn into the refill hopper portion by a vacuum source and discharged to the feeder hopper portion in response to indications of the level of the material in the refill hopper portion and the feeder hopper portion. A second aspect of this material feeding apparatus is the use of a flap valve as the valve which determines the passage of material from the refill hopper to the feeder hopper.

Abstract: A computerized parking meter uses an ultrasonic transducer to precisely measure the distance to a parked vehicle and to reset the parking meter to zero when the vehicle leaves. The computerized parking meter utilizes low power and may be recharged by solar power. The computerized parking meter can be programmed with differing rates, calendar days, advertising and alarms. Unlocking the coin box requires both the proper computer code and a key. When the computerized parking meter receives the proper computer code a solenoid is activated which retracts a plunger allowing the key to unlock the coin box. A coin discriminator allows only proper coins to be inserted into the meter. Audible messages and alarms can be sounded and written messages displayed. A portable terminal can communicate with a central computer to enhance collections security and identify repeat parking violators.

Abstract: An arcade game including an inclined playing surface, a playing piece which can be directed down the playing surface, and a vibration apparatus operative to overcome the frictional forces between the playing piece and the playing surface. The vibration mechanism preferably includes motor-driven eccentrics, and the playing piece is preferably a fiat disc, such as a coin. The playing piece is preferably guided into target' apertures by manipulating a handle to vary the angle of the playing surface. A variation of the game includes an award dispenser, which dispenses an award based upon the game score. Another variation includes a progressive bonus apparatus which receives score contributions from at least one individual game unit.

Abstract: A circuit for controlling low wattage gas discharge lamps comprised of a inductive coupling device, e.g., a transformer, a switching transistor, a current sensor, a comparator receiving a signal from the current sensor and driving the switching transistor, and a protective clamp circuit. The primary winding of the inductive coupling device receives a DC voltage and is also connected to the transistor. The transistor allows current to flow through the primary winding causing energy to be stored therein until the current sensor signals the comparator that a first threshold has been reached, the comparator then turns the switching transistor off and the inductive coupling device then enter a fly-back mode where the stored energy is applied to the lamp for a set period of time. The transistor then turns back on and this process is repeated so that the lamp receives a high frequency alternating voltage.

Abstract: An arcade game including a progressive bonus apparatus connected to a plurality of individual game units. The progressive bonus apparatus receives score contributions from each game unit to increase a progressive score. When players achieve a predetermined task on a game unit, they receive a non-monetary award based on the progressive score. Each game unit connected to the progressive bonus apparatus may take the form of an arcade-type game with a rotating wheel on which to base scoring. A playing piece is directed down a playing surface towards a target end, and the wheel is rotated according to the target that was hit by the playing piece. The position of the wheel when it stops rotating affects the score. A non-monetary award based on the score is dispensed to the player when the game is completed.

Abstract: An arcade game simulating a baseball game. A player hits a ball suspended in front of him or her at a known initial position towards a detector assembly, such as an x-y grid of light beams. The initial velocity of the ball is accurately determined by calculating the speed of the ball by measuring the time it took the ball to travel between its initial and final positions, and by calculating the direction of the ball from the known initial and final positions of the ball. Audio and visual feedback may be provided to the player of the game unit based upon the results of the hit ball and based upon a baseball game environment. Awards can also be dispensed to the player by the game unit based upon a score accumulated during the game.

Abstract: A force measuring device has a cell possessing an axis and a ring. The ring is coaxial with the axis and is elastically deformable by shearing as a result of forces which are parallel to the axis and are input into the inner and outer sides of the ring. The resistance is applied to a circuit to generate an electrical signal having a characteristic the value of which corresponds to the applied input force. As an alternative, the transducing element advantageously may be an elongated elastically stretchable carrier member having a strain gage mounted thereon. As a further alternative, the transducing element advantageously may be a piezoelectric crystal, or the like, provided with electrodes. Such a transducing element is mounted and held so as to generate an electrical signal in response to compression forces acting at the two holders.