Abstract: A resonator for joining metal members utilizing ultrasonic vibration includes an ultrasonic horn having a length of at least half wavelength of a resonance frequency of ultrasonic vibration transmitted from a vibrator, and a joining tool provided on the ultrasonic horn so as to project in a direction normal to a vibration transmission direction of the ultrasonic horn at a position of a point of a maximum vibration amplitude of the ultrasonic horn. The joining tool is formed into a linear bar made of a material excellent in acoustic property and is provided on a distal end thereof with a tool head projecting laterally.

Abstract: An ultrasonic vibration bonding resonator includes a resonance body, bonding working portions having a bonding working face and provided at a point of maximum oscillation on upper and lower surfaces of the resonance body and support portions provided at two points of minimum oscillation apart from the bonding working portions to opposite sides in a direction of ultrasonic vibration as projecting from front and back surfaces of the resonance body. It includes a resonance body, tool-attaching portions provided at a point of maximum oscillation on upper and lower surfaces of the resonance body, a bonding working portion having a bonding working face and attached to one of the tool-attaching portions, and support portions provided at two points of minimum oscillation apart from the bonding working portion to opposite sides in a direction of ultrasonic vibration as projecting from front and back surfaces of the resonance body.

Abstract: An IC connector includes a card detection contact terminal which is provided substantially at a central part of a housing unit and between a first grounding contact terminal and a second grounding contact terminal, and first and second contact terminals located so as to face each other along a direction of mounting and demounting of a first IC card, the first contact terminals provided adjacent to and both sides of the card detection contact terminal, the second contact terminals provided adjacent to and both sides of the card detection contact terminal.

Abstract: A pressure transducer comprising a housing and a piezoelectric resonator in the housing, wherein the resonator is made of a piezoelectric crystal having Curie temperature greater than 1000° C. or having no Curie temperature up to its melting point greater than 1000° C., and the piezoelectric crystal has a piezoelectric constant more than two times greater than that of quartz.

Abstract: A method and system for azimuth measurements using one or more gyro sensors is disclosed. The method includes acquiring a first data from each of the gyro sensors with an input axis aligned to a first angular orientation and acquiring a second data from each of the gyro sensors with the input axis flipped to a second angular orientation opposite to the first angular orientation. An earth rate component at the first angular orientations is determined based on a difference between the first data and the second data to cancel out bias of each of the gyro sensors. The method may include acquiring a third data of the gyro sensor with the input axis aligned to the same angular orientation as the first angular orientation. An average of the first data and the third data may be used instead of the first data for determining the earth rate component.

Abstract: An apparatus for azimuth measurements is provided. The apparatus comprises a housing and a plurality of gyro sensors aligned in the housing. Each of the plurality of gyro sensors has an input axis for angular velocity measurements. There is provided a drive unit for rotating each of the plurality of gyro sensors about a rotation axis. Each of the plurality of gyro sensors changes orientation of the input axis with the drive unit.

Abstract: An apparatus for azimuth measurements comprises an elongated housing, a plurality of gyro sensors, each of the gyro sensors having an input axis for angular velocity measurements, spherical sensor holders arranged along the longitudinal direction of the housing, at least one motor for driving the sensor holders, a transmission mechanism for transmitting a rotation force from the motor to each of the sensor holders and a controller for controlling a rotation of the motor. Each of the sensor holders has one of the gyro sensors and is rotatable about a rotation axis so as to change the orientation of the input axis of the gyro sensor.

Abstract: The wind power generator includes: a wind tunnel formed by a cylindrical member erected on a foundation in a vertical direction; a plurality of wind-collecting plates that extends from a circumferential wall of the cylindrical member in directions normal to the circumferential wall; a plurality of upper and lower guide plates provided between the wind-collecting plates; a plurality of wind inlets that introduces wind collected by the wind-collecting plates into the wind tunnel; back-flow preventing means that allow only the flow of wind blowing from the outside of the cylindrical member into the inside of the cylindrical member; a turbine that is driven by wind blowing out from one end of the wind tunnel, and power generator that is driven by the turbine.

Abstract: An apparatus for azimuth measurements comprises an elongated housing, a plurality of gyro sensors, each of the gyro sensors having an input axis for angular velocity measurements, spherical sensor holders arranged along the longitudinal direction of the housing, at least one motor for driving the sensor holders, a transmission mechanism for transmitting a rotation force from the motor to each of the sensor holders and a controller for controlling a rotation of the motor. Each of the sensor holders has one of the gyro sensors and is rotatable about a rotation axis so as to change the orientation of the input axis of the gyro sensor.

Abstract: A counter base for checkout includes a basket placing table on one side thereof to be freely raised and lowered. A driving unit can drive to raise and lower the basket placing table. A first detecting unit detects that a shopping cart enters an access area closer to the basket placing table than a predetermined range. A second detecting unit detects presence or absence of the shopping cart stopped along one side of the counter base. A control unit controls to drive, when the first detecting unit detects entrance of the shopping cart into the access area, the driving unit to move the basket placing table to a lowered position and, thereafter, controls to drive, when the second detecting unit does not detect the shopping cart stopped along the counter base, the driving unit to return the basket placing table to a raised position.

Abstract: A method and system for azimuth measurements using one or more gyro sensors is disclosed. The method includes acquiring a first data from each of the gyro sensors with an input axis aligned to a first angular orientation and acquiring a second data from each of the gyro sensors with the input axis flipped to a second angular orientation opposite to the first angular orientation. An earth rate component at the first angular orientations is determined based on a difference between the first data and the second data to cancel out bias of each of the gyro sensors. The method may include acquiring a third data of the gyro sensor with the input axis aligned to the same angular orientation as the first angular orientation. An average of the first data and the third data may be used instead of the first data for determining the earth rate component.

Abstract: When inserting a MEMORY STICK MS, the tip portion of the MEMORY STICK MS rotates and detrudes the contact pressing plate, so that contact portions of contact terminals 14ai for a SD card SD are pressed down by a rim of slits 20ai of the contact pressing plate 20 up to a position where the contact portions do not interfere with the MEMORY STICK MS.

Abstract: An ultrasonic vibration bonding resonator includes a resonance body, bonding working portions having a bonding working face and provided at a point of maximum oscillation on upper and lower surfaces of the resonance body and support portions provided at two points of minimum oscillation apart from the bonding working portions to opposite sides in a direction of ultrasonic vibration as projecting from front and back surfaces of the resonance body. Otherwise, it includes a resonance body, tool-attaching portions provided at a point of maximum oscillation on upper and lower surfaces of the resonance body, a bonding working portion having a bonding working face and attached to one of the tool-attaching portions with a screw, support portions provided at two points of minimum oscillation apart from the bonding working portion to opposite sides in a direction of ultrasonic vibration as projecting from front and back surfaces of the resonance body.

Abstract: The principles described herein relate to methods for soldering electrode terminals, pins or lead-frames of commercial electric components for high temperature reliability. In one embodiment, prior to soldering the electric components, a pre-plated solder layer is removed from the lead frame or pins, and nickel and/or gold films are formed with electroless plating. The removal of the pre-plated solder layer avoids excess pre-plated Sn with high-Pb solder that lowers the melting point to between 180° C. and 220° C. and weakens solder joints. The nickel layer formed with an electroless plating acts as a barrier to the interdiffusion of tin from solder with copper of the lead frame material, which may otherwise occur at high temperatures. Interdiffusion forms an intermetallic compound layer of copper and tin and degrades solder joint strength. The novel soldering processes improve high temperature reliability of solder joints and extend electronics life-time.

Abstract: A cylinder bore (4) of a two-stroke internal combustion engine (1) has first scavenging ports (12) and second scavenging ports (13) inside. The first scavenging ports (12) are nearer to an exhaust port (11) of the engine (1) than the second scavenging ports (13). In each scavenging stroke, the second scavenging ports (13) are opened earlier than the first scavenging ports (12) and introduce fuel-free air (A) from the second scavenging ports (13) into a combustion chamber (6). The first scavenging ports (12) are opened later and introduce an air-fuel mixture (M) pre-compressed in a crank chamber (8) into the same combustion chamber (6). Thus, harmful substances contained in exhaust gas discharged from the engine (1) are reduced.

Abstract: A pressure transducer for high-pressure measurements comprising a housing and a piezoelectric resonator located in the housing, wherein the resonator comprises double rotation cut piezoelectric material configured or designed for vibrating in the fundamental tone of dual modes of the fast and slow thickness-shear vibrations.