Title:
【発明の名称】うず巻形ガスケットの製造方法及び製造装置
Document Type and Number:
Japanese Patent JP2882602
Kind Code:
B1
Abstract:
The present invention relates to a method of producing a spiral wound gasket for sealing fluid such as liquid including water and oil, and gaseous body including vapor and gas. Moreover, the present invention relates to a device for producing the spiral wound gasket. In this invention, the tip portion of a hoop material (A) is cut and raised thereby forming a checking stepped-portion (A1). The checking stepped-portion (A1) is caught by a checking pawl (3), so as to wind the hoop material (A) around a core drum (2). After winding the hoop material (A) around the outer periphery of the core drum (2), once at least, the checking pawl (3) is retracted from the outer periphery of the core drum (2), thereby separating the checking pawl (3) from the checking stepped-portion (A1). The spiral wound gasket produced by the present invention exhibits an excellent sealing property. Moreover, it has also an excellent durability.
Inventors:
Hashiguchi Hideto
Masahiko Takaoka
Keiji Okada
Shoji Kato
Masao Konaka
Masahiko Takaoka
Keiji Okada
Shoji Kato
Masao Konaka
Application Number:
JP8941898A
Publication Date:
April 12, 1999
Filing Date:
March 17, 1998
Export Citation:
Assignee:
Nippon Pillar Industry Co., Ltd.
International Classes:
B23P21/00; B21D11/06; F16J15/12; (IPC1-7): F16J15/12; B23P21/00
Domestic Patent References:
| JP488267A |
Attorney, Agent or Firm:
Takafumi Watanabe