Sumitomo Rubber Industries Limited

Kobe Steel, Ltd.

Mu Instrument Trading Corp.

Yutaka Yoshida

Hiroaki Tanaka

Hideki Sano

Yoshiyuki Okido

Akio Hakamada

Kiyoto Maruoka

Kazuhisa Fushihara

Kazuo Hochi

Hisashi Mitamura

Akihiro Nakahara

Kazuto Okada

Norikatsu Nakata

Hiroaki Matsubara

A post cure inflator for expansion-cooling a vulcanized tire is provided with a vulcanized-tire holding mechanism for holding the vulcanized tire and a rotating mechanism for rotating the vulcanized tire at a high speed via the vulcanized-tire holding mechanism such that a forced convection becomes more dominant than a natural convection in an air flow around the vulcanized tire.

Post cure inflator and vulcanized tire cooling method

It is an object of the present invention to precisely and efficiently paste a tread ring and a raw tire base body with each other. A ring-like base bodyis aligned with a formerThe ring-like base bodyrelatively approaches and separates from a formerThe ring-like base bodyincludes pasting meanswhich pastes a tread ring A to a raw tire base body B. The pasting meansincludes a grasping toolhaving a plurality of segmentswhich abut against an outer peripheral surface of the tread ring A to grasp the tread ring A. The pasting meansalso includes a pushing-down pasting toolhaving an annular rubber tube bodyThe rubber tube bodyis disposed on each side of the segmentand pushes down a shoulder side portion As of the tread ring A by expansion to paste the shoulder side portion As to the raw tire base body B.

Raw tire forming apparatus and raw tire forming method

A pair of unvulcanized half outer layer bodies are formed by metallic molds provided with first mold having a hemispherical convex portion and second mold having a hemispherical concave portion. A vulcanized inner core is put into either of half outer layer bodies, and a pair of half outer layer bodies are paired up to form a preparatory form which is to be vulcanization molded in metallic molds for vulcanization molding.

Apparatus for manufacturing a golf ball with an initial preparatory form having a seam

The present invention provides a method for the production of a hollow golf ball, which has a perfect spherical hollow portion and possesses excellent durability and good shot feel at the time of hitting, without adversely affecting a good rebound performance. The present invention provides a method for producing a hollow golf ball comprising a hollow core (5) having a hollow center (2) and a hollow portion (1) and, optionally, at least one intermediate core layer (3) formed on the hollow center (2), and a cover (4) formed on the hollow core (5), wherein the step of producing the hollow center (2) comprises:

Method for the production of a hollow golf ball

A spherical object is positioned on a rotation stage, the rotation stage is rotated, and a deviation detector detects whether the spherical object deviates from the rotation stage or not. A rotation frequency of the rotation stage when the object deviates from the rotation stage is detected by a rotation frequency detector, and a judgement system judges whether the object is mass eccentric or not, comparing the detected rotation frequency with a predetermined rotation frequency which is set beforehand.

Apparatus and method for detecting mass eccentricity

Method for manufacturing a golf ball with an initial preparatory form

Growing community of inventors

Kobe, Japan

Yutaka Yoshida