Sumitomo Rubber Industries Limited

Takashi Teraguchi

Shinji Ohshima

Tetsuji Nishiyama

Kazunari Yoshida

Hiroyuki Katayama

Atsuhiko Tanaka

The invention relates to an apparatus and a method for measuring rotation quantity of a spherical object. A recording device photographs and records a rotating spherical object from one definite direction as a plurality of stationary circular images at definite intervals. An instrumentation device measures positions of definite two points in each of the recorded stationary circular images. An arithmetic unit calculates rotation quantity of the spherical object on each axis of a three-dimensional coordinate-system on the basis of the positions of the two points in each of the stationary circular images.

Apparatus and method for measuring rotation quantity of spherical object

An apparatus and a method for simultaneously measuring velocity and an instantaneous spatial position of a spherical object. A first group of sensors and a second ground of sensors are arranged at known positions at intervals each less than the radius of the spherical object. The times when the spherical object begins to intercept the sensors of the groups of sensors and the time lengths of the respective interceptions are measured by using an instrumentation device. The velocity and instantaneous spatial position of the spherical object are calculated by using an arithmetic unit on the basis of the measured times and time lengths.

Apparatus and method for measuring velocity and instantaneous spatial

An apparatus and a method for measuring head speed and an opening angle. At least four sensors are disposed at each vertex of a defined rectangle. An instrumentation device measures differences in time between instants in which a moving head intercepts rays of light toward the sensors, respectively. An arithmetic unit calculates head speed and an opening angle on the basis of the measured time differences.

Apparatus and method for measuring head speed and opening angle using

An apparatus for measuring the flying velocity of a spherical object, including ray projecting devices for emitting a plurality of parallel rays of light, ray receiving devices for detecting the incidences of said rays of light on them and the interceptions of said rays of light, an instrumentation device for measuring the time for which said rays of light are blocked off by a spherical object in flight, upon detecting signals given by said ray receiving devices, and an arithmetic operation device, such as a computer. The parallel rays of light emitted by using the ray projecting devices are arranged within a plane, and their respective positions are known quantities. The distance between every two rays of light is set such as to be less than the radius of the spherical object. The arithmetic operation device is used to compute the flying velocity of the spherical object in flight on the basis of the locations of the rays of light which are blocked off, and the interception time of the rays of light which is measured by using the instrumentation device.

Apparatus and method for measuring the velocity of a flying spherical

A ray projecting means emitting a plurality of parallel rays of light, a ray receiving device for detecting the incidences of the rays of light impinging on them and the interceptions of the rays of light, an instrumentation device for measuring the time for which the rays of light are blocked off by a spherical object in flight, upon detecting signals given by the ray receiving device, and an operation device comprising a computer. The parallel rays of light emitted by using the ray projecting device are arranged within a plane, and their respective positions are known quantities. The distance between every two rays of light is set such as to be less than the radius of the spherical object. The operation device is used to compute the flying velocity of the spherical object in flight on the basis of the locations of the rays of light which are blocked off, and the interceptive time of the rays of light which is measured by using the instrumentation device.

Apparatus and method for measuring the speed, position, and launch angle

The present invention utilizes, in combination, an irradiator, a screen and an optical sensor. The irradiator generates a parallel light band to form a linear image region on the screen. A spherical flying object is made to pass transversely through the parallel light band to form a silhouette within the image region. The silhouette is detected by the optical sensor to determine the instantaneous spatial position of the flying object. The position thus determined may be utilized for example to calculate the initial trajectory angle of a golf ball hit from a fixed position.

Apparatus and method for determining instantaneous spatial position of

An apparatus for inspecting a side wall of a tire including an optical sensor provided so as to face a side wall surface of a rotatable tire for reading a variation of distance to the side wall surface as an irregularity signal, memory means for storing an irregularity signal read by the optical sensor, usable data discrimination means for discriminating whether or not the signal read out from the memory means is usable as irregularity inspection data, correction means for removing detection-unrequired irregularities from the data discriminated as usable data by the usable data discrimination means, height calculation means for finding out an irregularity falling within a predetermined condition in the corrected data and calculating the height of the irregularity, and determination means for determining based on the height of the irregularity calculated by the height calculated means where there is an abnormal irregularity.

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Kakogawa, Japan

Takashi Teraguchi