Abstract: The present specification discloses a hot wire air flow meter with high circuit stability. The hot wire type air flow meter comprises a hot wire located in an air flow path to be measured and to which current is supplied from the external, a circuit for detecting a value of current flowing through the hot wire, an amplifying circuit including an inverting input terminal, a non-inverting input terminal to which a value detected in the current detecting circuit is applied, and an output terminal to which an output of an air-flow function is applied, a feedback circuit for supplying a feedback output to any terminal except the non-inverting input terminal of the amplifying circuit and controlling the output of the amplifying circuit to keep the temperature of the hot wire stable according to the output of the amplifying circuit, and a circuit for compensating for a phase of an output of the amplifying circuit contained in the feedback circuit.

Abstract: A device for calculating the center of gravity (CG) and moments of inertia of a vehicle. The vehicle is driven onto the device and the height of its center of gravity is determined by hanging weights on the device to displace the vehicle's CG from its position without the weights; the height of the CG is then calculated by a simple mathematical formula. The pitch moment of inertia is calculated by aligning its axis perpendicular to the axis of the pivots and allowing the vehicle to swing, then calculating the moment of inertia by another mathematical formula. The roll moment of inertia is calculated by rotating the vehicle 90 degrees, letting it swing, and then using a slighly different formula. The yaw moment of inertia is calculated by lowering the device to the ground and causing the vehicle to oscillate about a pivot point, then calculating the yaw moment of inertia by means of another mathematical formula.

Abstract: In a method and an apparatus for balancing successive rotary members, an unbalance measuring operation is carried out in one or more planes on each rotary member which is rotated at a measuring speed in a measuring run within an overall unbalance measuring time for ascertaining the required number of items of measuring information in a plurality of repetitive measuring cycles. After the elapse of a fraction of the overall unbalance measuring time the unbalance measuring operation is interrupted for an interruption time for the purposes of permitting the performance of working operations which due to vibration caused thereby could result in falsification of the unbalance measurement results, then unbalance measurement is resumed, and further interrupted, and so on in a repetitive procedure to make up the overall measurement time.

Abstract: On collating an input streaked pattern (fingerprint) with a reference streaked pattern, a local streak direction is extracted from a local area defined in the input streaked pattern by one of reference feature positions of reference feature points of the reference streaked pattern. Direction coincidence or non-coincidence is checked by comparing the extracted streak direction with a reference streak direction at the above-mentioned one reference feature position. If direction coincident, the presence or absence of one of the input feature points of the input streaked pattern is confirmed in the local area. If present, pattern coincidence is judged when a count of the input feature points reaches a threshold value. If the value is not reached, collation repeat and pattern non-coincidence is judged when all reference feature positions and streak directions are not yet or already used in extraction and subsequent check, respectively.

Abstract: A fingerprint input apparatus is constructed to have simple construction. It serves to provide an excellen S/N ratio and reliably input a fingerprint pattern. The fingerprint input apparatus includes a light source for emitting a ray of light, a lightguide plate having a predetermined location at which a finger can be contact with the lightguide plate, a unit for directing the ray of light into at least one surfaces of the lightguide plate in a manner to keep such an angle of incidence as allowing the ray of light to be totally reflected within the lightguide plate, the lightguide plate being constructed to direct the ray of light into the predetermined location, and an image pickup unit located near the predetermined location of the lightside plate and outside of an opposite surface to a surface having the predetermined location, the image pickup unit being constructed to pick up a right irregularly reflected on a fingerprint surface of the finger contacted with the predetermined location.

Abstract: A high definition camera for photographing still pictures using a high resolution charge-coupled solid-state imaging device. The charge-coupled solid-state imaging device includes a plurality of photoelectric conversion elements arranged in rows and columns in matrix form, each element corresponding to a pixel and the rows being divided into four fields, a plurality of vertical charge transfer paths formed between each column of the photoelectric conversion elements and a horizontal charge transfer path connected to a terminal portion of each of the vertical charge transfer paths. Pixel signals generated at photoelectric conversion elements corresponding to one of four fields are transferred to transfer elements in a field shift period corresponding to the one field.

Abstract: A device and a method are provided for reducing false indications of leakage between the inner and outer walls of a double-wall tank. The device reduces contact between a sensor assembly and condensation which forms between the walls, preferably comprising an isolation stand-off flange secured around a portion of the sensor assembly. The method comprises spacing the sensor assembly from the walls to reduce the potential for contact between the sensor assembly and condensation.

Abstract: A volumetric meter for liquids and/or gases in which rolling rollers are mutually repelled magnetically to press in a sealed manner against the inner surface of the outer casing of the meter, said rollers being housed in circumferential grooves in the rotor, which is mounted eccentric to said outer casing, said grooves being inclined forwards to the direction of rotation of the rotor.

Abstract: An axisymmetric bluff body is proposed for a vortex flowmeter as the vortex shedder. It is found that vortex shedding frequencies measured can be nondimensionalized into a linear relation with the Reynolds number for area blockage ratios of circular disks up to 29.2%. Vortex shedding frequency can be clearly sensed by a pressure transducer installed on the pipe wall in the neighborhood of the maximum pressure fluctuation being measured. This suggests a feasible design that the sensor of a vortex flowmeter can be removed from the flow field or changed easily.

Abstract: A camera includes an electronic zooming feature to selectively transform an image actually received at an image sensor into a displayed image at a photographing plane according to different angles of view corresponding to different zooming ratios. The image actually received is converted to binary data and stored in memory according to address coordinates. Electronic zooming is performed without affecting the optical system of the camera by reading stored data from memory to obtain an area defined by selected address coordinates and displaying an image corresponding to a desired focal length.

Abstract: Apparatus and methods for determining balance of a cylindrical vehicle, the pparatus comprising a frame adapted for horizontal disposition, first and second support assemblies mounted on the frame for receiving the vehicle, first and second load cells mounted, respectively, on the first and second support assemblies, whereby upon placement of the vehicle on the support assemblies the load cells are adapted to provide readings indicative of the weight of the vehicle, from which may be determined the center of gravity of the vehicle. A torsion cell assembly is mounted on the frame and adapted for connection to the vehicle and for providing indications of righting moment and static heel of the vehicle.

Abstract: An input processing circuit for an air flow sensor comprising a differential amplifier connected through two lines to an air flow sensor and having an operational amplifier an output signal from the air flow sensor and sends a result of this processing to an analogue value - digital value conversion integrated circuit. An output signal from the air flow sensor is supplied to the differential amplifier through a filter circuit so as to prevent an occurrence of error in measuring the amount of sucked air for an internal combustion engine due to various noises. A connection of an inverting input terminal end of the differential amplifier to a ground through a resistor prevents an error caused by a breakage of a reference voltage line connected between the air flow sensor and the input processing circuit. A differential input amplifier circuit also prevents an error caused by a variation in potential resulting from consumption current of an air flow sensor or the like from being generated.

Abstract: A thermal flow sensor is constructed in such a manner that the longitudinal axis of a thermal resistance element is positioned so as to face wires of a rectification net at an angle ranging from 10.degree. to 80.degree.. The surface of the thermal resistance element onto which the openings between the wires of the rectification net would be projected remains substantially the same, regardless of changes in attachment positions of the thermal resistance and the rectification net. Even when the thermal resistance element is arranged close to the rectification net, unevenness in characteristics between the components can be reduced.

Abstract: Solid state image sensing apparatus including a readout circuit associated with each detector element. The readout circuit includes a clipping gate that operates to drain charge, from a charge storage region associated with the detector element, that is in excess of a potential barrier height of the clipping gate. The barrier height is first maintained at a lower value and then at a higher value during each frame integration period so that intensity range compression of a high level image signal is achieved, while a low level image signal is not affected by the operation of the clipping gate.

Abstract: A camera such as a video camera, an electronic still camera and the like which incorporates a liquid crystal view finder. The camera employs a liquid crystal view finder which uses a liquid crystal display panel having a smaller thickness than a cathode ray tube and requires no countermeasures against noise and the like. The liquid crystal display panel is disposed longitudinally of the camera and in parallel to the optical axis of a taking lens within a main body of the camera, and the display image of the liquid crystal display panel is guided from the side portion of the camera main body through a reflex mirror to an eyepiece part. Thus there is realized a compact view finder, which can in turn enhance the sense of integration between the camera main body and the view finder and also allows the size of the camera to be reduced.

Abstract: A torque measurement device is described which facilitates the testing of a handset cap of a public telephone for determining compliance with evolving mechanical disassembly requirements. The device is an interface between the handset cap under test and the torque measurement tool for uniform application of torque to the handset cap and the acquisition of reliable and reproducible test results. The device is a metallic receptacle having in its base a cylindrical aperture which conforms dimensionally to the shape of the handset cap and lodges the handset cap during testing. Also, the device includes set screws which bear against the cap to hold it uniformly in place during testing.

Abstract: A fluid flow sensing apparatus for measuring very low fluid flows comprising a fluid mass flow sensor for measuring the mass flow rate of a fluid from a temperature differential between predefined points within the sensor; a fluid flow channeling element for accepting the fluid at an input temperature and pressure and directing the fluid across the sensor, and wherein the input temperature and pressure about the sensor is maintained; and a fluid flow dampening element for providing an average fluid flow to the sensor.

Abstract: A web tension sensing device supports the end of a rotating roll by means of a housing. A bearing within the housing transmits forces to a beam which carries a strain gage. The beam is mounted within a cylindrical body which can be secured to a fixed structure in a variety of ways. The beam has a flat middle portion of reduced thickness, where the strain gage is located, and the forward end of the beam is fitted within the bearing, which is a spherical self-aligning bearing.

Abstract: A Coriolis mass flow meter employing non-metallic flow conduit structure coupled and supported to distribute loads and reduce stresses on the flow conduit structure. The present invention discloses non-metallic flow conduit structures having corrosion-resistance and having suitable service temperature ranges, variation of Young's modulus and range of thermal expansion coefficient. A preferred embodiment includes support structures which distribute the loads on the flow conduit structure and pipe couplings which provide resilient solid mounting.

Abstract: The flowrate of fluid to be measured, that flows into the nozzle of a fluidic oscillator is stabilized by fitting flow adjusting plates on the upstream side of the nozzle.