The Yokohama Rubber Co., Ltd.

Yuichi Sugiyama

Kensuke Matsumura

Tsuneo Koyama

Hiroyuki Kaido

Yoshio Tajima

Kazuhiro Yamada

Masaaki Obara

Teruhide Furuhama

Hiroshi Kakiuchi

Toshihiro Ueotani

A rubber extrusion device includes a head mounted with a die having: an extrusion port variable member disposed at a front end position of an extrusion flow path to move in a direction allowing an area of an extrusion port to change; and a rectifying body that enters and exits the extrusion flow path from a front end side of the extrusion flow path. A rubber extrudate is manufactured by: positioning the extrusion port variable member at a desired position in its movement direction; positioning the rectifying body at a desired position by moving the rectifying body in an extension direction of the extrusion flow path while being in contact with an inner wall of the extrusion flow path; and extruding unvulcanized rubber from the extrusion port by feeding the unvulcanized rubber into the extrusion flow path.

Rubber extrusion device and method for manufacturing rubber extrudate

An inner circumferential length measurement method includes the steps of: disposing a two-dimensional sensor at a predetermined measurement position on an inner side of the circular member placed flat in an unrestrained state on a support so that the two-dimensional sensor faces an inner circumferential surface of the circular member in a non-contact state; rotating the two-dimensional sensor about rotation shaft at a predetermined position on the inner side of the circular member; measuring a separation distance from the two-dimensional sensor to the inner circumferential surface around an entire circumference of the circular member; and calculating an inner circumferential length of the circular member via a calculation unit using the separation distance measured and a distance from the rotation shaft to the two-dimensional sensor in a plan view.

Inner circumferential length measurement method for circular member

Provided is an inner circumferential length measuring device for a circular member, the device having a support with two projection portions projecting from a surface of the support and configured to engage an inner circumferential surface of the circular member. A two-dimensional sensor is disposed facing the inner circumferential surface of the circular member at a predetermined measurement position and is rotatable about a rotation shaft at a predetermined position inward of the circular member, the two-dimensional sensor being configured to measure a separation distance from the two-dimensional sensor to the inner circumferential surface around an entire circumference of the circular member. A calculation unit calculates an inner circumferential length of the circular member using the separation distance and a distance from the rotation shaft to the two-dimensional sensor.

Inner circumferential length measuring device for circular member

An inner circumferential length measuring device for a circular member includes a two-dimensional sensor disposed at a predetermined measurement position facing an inner circumferential surface of a circular member placed flat in an unrestrained state on a support. By the two-dimensional sensor being rotated about a rotation shaft of a predetermined position inward of the circular member, a separation distance from the two-dimensional sensor to the inner circumferential surface is measured by the two-dimensional sensor in a non-contact state with the circular member in a range of an entire circumference of the circular member. A calculation unit calculates an inner circumferential length of the circular member based on the separation distance measured and a distance from the rotation shaft to the two-dimensional sensor.

Fermentation products are composed essentially of poultry manure components, which products are derived from reacting poultry manure materials with concentrated sulfuric acid and calcium silicate and subsequently from fermenting the resulting reaction mixture by the use of a selected class of bacteria. The product is suitable for use as an organic fertilizer and as a soil conditioner.

Fermentation product induced from poultry manure

A rubber composition which comprises a vulcanizable rubber and 0.5 - 20 wt. parts of a metal salt of hydroxy benzoic acid per 100 wt. parts of the rubber. This composition exhibits excellent adhesive bonding to metallic material.

Rubber composition containing metal salt of hydroxy benzoic acid

Rubber compositions containing relatively large amounts of benzoic acid or monohydroxy benzoic acid providing vulcanized rubber products having improved adhesion to metallic or fibrous materials and an improved chipping and cutting resistance. This is a continuation of application Ser. No. 588,047, filed June 18, 1975, now abandoned.

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Shinshiro, Japan

Yuichi Sugiyama