Gasket and method of producing gasket

Patent metadata

Field	Value
Publication number	US-9845876-B2
Application number	US-201514808471-A
Country	US
Kind code	B2
Filing date	Jul 24, 2015
Priority date	Jul 25, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

A gasket in which a high sealing property can be ensured, and a method of producing such a gasket are provided. A gasket 1 is produced by spirally winding a belt-like composite body 13 having a metal mesh member 11 and expanded graphite 12 enveloped by the metal mesh member, and then compression molding the composite body into a tubular shape. The gasket includes a first sealing portion 21 placed in one axial end portion, and a second sealing portion 22 placed in the other axial end portion. The gasket has a sectional shape in which the composite body that is in a bent state overlaps in a radial direction. The composite body includes a bent portion which is radially bent in an acute angle shape.

First claim

The invention claimed is:

1. A gasket that is configured by spirally winding a belt-like composite body having a metal mesh member and expanded graphite enveloped by the metal mesh member, and then compression molding the composite body into a tubular shape, wherein the gasket includes a first sealing portion placed in one axial end portion, and a second sealing portion placed in another axial end portion, the composite body includes an inner-circumference composite body portion at a radially inner circumferential side of the gasket, an outer-circumference composite body portion at an outer circumferential side of the gasket, and a plurality of intermediate composite body portions disposed between the inner-circumference composite body portion and the outer-circumference composite body portion, each of the composite body portions being defined by the metal mesh member, said composite body having a section shape that is in a bent state such that adjacent composite body portions overlap in both a radial direction and an axial direction of the gasket; and at least one of the intermediate composite body portions includes a bent portion that is radially bent in an acute angle shape.

2. The gasket according to claim 1 , wherein the sectional shape is formed by compression molding the composite body to enable the first sealing portion to have a first sealing surface that is tapered toward one axial end surface, and the second sealing portion to have a second sealing surface that is tapered toward another axial end surface.

Assignees

• Nippon Pillar Packing

Inventors

• Tanabe Hiroki
• Yanagitake Yuji
• Sato Yuta

Classifications

• B32B2313/04

  Carbon · CPC title

• F16J15/108

  Special methods for making a non-metallic packing · CPC title

• B32B37/10

  characterised by the pressing technique, e.g. using action of vacuum or fluid pressure · CPC title

• F16J15/104

  characterised by structure · CPC title

• B32B37/16

  with all layers existing as coherent layers before laminating · CPC title