APPARATUS FOR FORMING RING-SHAPED MEMBER

Title:

APPARATUS FOR FORMING RING-SHAPED MEMBER

Document Type and Number:

WIPO Patent Application WO/1992/007710

Kind Code:

A1

Abstract:

An apparatus for forming a ring-shaped member comprising a main body of rotating drum having a rotary shaft; a drum driving device for rotating the main body of rotating drum about the rotary shaft; a plurality of movable members parallely provided in the circumferential direction of the main body of rotating drum and radially movably held by the main body of rotating drum; drum segments fixed to respective movable members and collectively forming the outer peripheral portion of the rotating drum; a stepless expanding-contracting device for simultaneously moving the movable members and the drum segments in the radial direction of the rotating drum to expand or contract the diameter of the rotating drum; and a switching device for switching this stepless expanding-contracting device between a movable state and a stationary state.

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Inventors:

OSA MASAYUKI (JP)

Application Number:

PCT/JP1990/001399

Publication Date:

May 14, 1992

Filing Date:

October 31, 1990

Export Citation:

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Assignee:

SUMITOMO RUBBER IND (JP)

International Classes:

B29D30/24; B29D30/36; (IPC1-7): B29D30/36

Foreign References:

JPS57102331A

1982-06-25

Other References: