Yamato Scale Company, Limited

Kazuo Nakayama

Shinichi Inoue

Shinichi Miyazaki

Takaaki Ito

Takefumi Miyake

Masato Kitamoto

A lower side coupling of a Hirth coupling is coaxially coupled and fixed to a spindle, an upper side coupling of the Hirth coupling is coaxially coupled and fixed to a lower rim, the upper side coupling of the lower rim is meshed with the lower side coupling of the spindle, and upward separation of the lower rim from the spindle is prevented by chuck mechanisms.

Rim replacing device in tire balance measuring device

A tire conveyance device is provided with at least two tire gripping devices spaced from each other at an interval in a front-rear direction and capable of gripping a horizontally situated tire from left and right sides of the tire in a direction orthogonal to a conveyance path along which the tire is conveyed in the front-rear direction. The front and rear tire gripping units are each provided with a pair of left and right tire support mechanisms facing each other across the conveyance path. The tire conveyance unit is also provided with a drive unit which moves the two tire gripping units together in the front-rear direction with a stroke equal to the interval between the two tire gripping devices in the front-rear direction.

Tire conveyance device

A foreign matter detector includes an oscillator for generating an oscillating signal, a phase shifter connected to the oscillator and adapted to provide a phase shifted oscillating signal, and an electromagnetic transducer. The transducer includes an excitation coil connected to the oscillator and two interconnected detection coils magnetically coupled to the excitation coil and adapted to produce a differential signal therebetween when an object is passed through the transducer. The detector also includes a first detector adapted to produce a first detected analog signal corresponding to the component of the differential signal in phase with the oscillating signal and a second detector adapted to produce a second detected analog signal corresponding to the component of the differential signal in phase with the phase shifted oscillating signal. The detector further includes an analog to digital converter connected to the first and second detectors adapted for converting the first and second analog detected signals into first and second series of digital values, respectively, and circuitry connected to the converter for selecting a representative value for the object from each of the first and second series of the digital values.

Detector for detecting foreign matter in object by using discriminant

A foreign matter detector includes an oscillator for generating an oscillating signal, a phase shifter connected to the oscillator and adapted to provide a phase shifted oscillating signal, and an electromagnetic transducer. The transducer includes an excitation coil connected to the oscillator and two interconnected detection coils magnetically coupled to the excitation coil and adapted to produce a differential signal therebetween when an object is passed through the transducer. The detector also includes a first detector adapted to produce a first detected analog signal corresponding to the component of the differential signal in phase with the oscillating signal and a second detector adapted to produce a second detected analog signal corresponding to the component of the differential signal in phase with the phase shifted oscillating signal. The detector further includes an analog to digital converter connected to the first and second detectors adapted for converting the first and second analog detected signals into first and second series of digital values, respectively, circuitry connected to the converter for weighting the digital values, and circuitry connected to the weighting circuitry for selecting a representative value for the object from each of the first and second series of the weighted digital values.

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Akashi, Japan

Kazuo Nakayama