Preliminary seal, preliminary seal arrangement and sealing ring comprising the preliminary seal

Patent metadata

Field	Value
Publication number	US-2016010750-A1
Application number	US-201514793140-A
Country	US
Kind code	A1
Filing date	Jul 7, 2015
Priority date	Jul 11, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

Preliminary seal, comprising an essentially circular disc ( 1 ) of an electrically conductive material ( 2 ) permeable to air and a carrier body ( 3 ), wherein the disc ( 1 ) is configured as a separately produced individual part—in relation to the carrier body ( 3 )—is joined to the carrier body ( 3 ).

First claim

1 . A preliminary seal, comprising a disc ( 1 ), which is configured so as to be substantially annular and is of an electrically conductive and air-permeable material ( 2 ), and a carrier body ( 3 ), wherein the disc ( 1 )—in relation to the carrier body ( 3 )—is configured as a separately produced individual part and is connected to the carrier body ( 3 ).

2 . The preliminary seal according to claim 1 , wherein the disc ( 1 ) displays an electrical resistance which is ≦100Ω.

3 . The preliminary seal according to claim 1 , wherein the disc ( 1 ) displays an electrical resistance which is ≦10Ω.

4 . The preliminary seal according to claim 1 , wherein the carrier body ( 3 ) is formed by a support ring ( 4 ) which is composed of a hard and tough material.

5 . The preliminary seal according to claim 1 , wherein the carrier body ( 3 ) is formed by a sealing ring ( 5 ).

6 . The preliminary seal according to claim 5 , wherein the sealing ring ( 5 ) is configured as a radial shaft sealing ring ( 6 ).

7 . The preliminary seal according to claim 1 , wherein the disc ( 1 ) displays an air permeability which corresponds to at least the air-conveying capability of the radial shaft sealing ring ( 6 ).

8 . The preliminary seal according to claim 1 , wherein the disc ( 1 ) and the carrier body ( 3 ) are adhesively bonded to one another.

9 . The preliminary seal according to claim 1 , wherein the material ( 2 ) of which the disc ( 1 ) is composed is formed by a non-woven material.

10 . The preliminary seal according to claim 9 , wherein the non-woven material displays fibers having a fiber length of 2 mm to 200 mm.

11 . The preliminary seal according to claim 9 , wherein the non-woven material displays a mass per unit area of 20 g/m 2 to 200 g/m 2 .

12 . The preliminary seal according to claim 1 , wherein the material ( 2 ) of which the disc ( 1 ) is composed is formed by a woven fabric.

13 . The preliminary seal according to claim 1 , wherein the material ( 2 ) comprises electrically conductive particles ( 7 ).

14 . The preliminary seal according to claim 13 , wherein the particles ( 7 ) are formed by carbon fibers.

15 . The preliminary seal according to claim 13 , wherein the particles ( 7 ) are configured so as to be metallic.

16 . The preliminary seal according to claim 15 , wherein the particles ( 7 ) are formed by metal wires.

17 . The preliminary seal according to claim 1 , wherein the disc ( 1 ) displays an impregnation ( 8 ) of a PTFE dispersion.

18 . The preliminary seal according to claim 1 , wherein the disc ( 1 ) displays a thickness by calendering which is 25% to 95% of the manufacturing-dependent initial thickness.

Assignees

• Freudenberg Carl Kg

Inventors

• Colineau Francois
• Hintenlang Guenter
• Klenk Thomas
• Koenig Stefan

Classifications

• F16J15/3232

  having two or more lips · CPC title

• F16J15/322 Primary

  supported in a direction perpendicular to the surfaces · CPC title

• F16J15/3268

  Mounting of sealing rings · CPC title

• F16J15/3284

  characterised by their structure; Selection of materials · CPC title

• F16J15/3236

  with at least one lip for each surface, e.g. U-cup packings · CPC title