Sealing arrangement

• US 10,197,103 B2
• Filed: 01/22/2016
• Issued: 02/05/2019
• Est. Priority Date: 01/26/2015
• Status: Active Grant

• Current Assignee: ABet SKF
• Original Assignee: ABet SKF
• Inventors: Gezault, Alain, Kurth, Juergen
• Primary Examiner(s): Patel, Vishal A
• Application Number:
  US15/003,889
• Publication Number:
  US 20160215824A1
• Time in Patent Office: 1,110 Days
• CPC Class Codes: F16C 2202/32 Conductivity
• CPC Class Codes: F16C 33/78 with a diaphragm, disc, or ring, with or without resilient members F16C33/761 takes precedence
• CPC Class Codes: F16C 33/7823 of sealing lips
• CPC Class Codes: F16C 33/7856 with a single sealing lip
• CPC Class Codes: F16C 33/7876 with sealing lips
• CPC Class Codes: F16C 33/7896 with two or more discrete sealings arranged in series
• CPC Class Codes: F16C 41/002 Conductive elements, e.g. to prevent static electricity
• CPC Class Codes: F16J 15/064 the packing combining the sealing function with other functions
• CPC Class Codes: F16J 15/3204 with at least one lip
• CPC Class Codes: F16J 15/328 Manufacturing methods specially adapted for elastic sealings moulding B29C
• CPC Class Codes: F16J 15/3284 characterised by their structure; Selection of materials

Abstract

A sealing arrangement for sealing a first chamber against a second chamber, the sealing arrangement being located between a first machine element and a second machine element. A relative movement occurs between the two machine elements. The sealing arrangement comprises a sealing element which is equipped with at least one sealing lip. The sealing lip(s) is/are held by the sealing element and is/are fixed by the sealing element at one of the machine elements. The sealing lip(s) is/are in sliding contact with the other machine element. The sealing arrangement comprises a lip element that is fixed with one of the machine elements and is in sliding contact with the other machine element. The lip element comprises a conductive element for establishing electrical conductivity of the lip element, so that electrical conductivity is established between the two machine elements by the lip element in an effective an economical manner.

Claims

1. A sealing arrangement for sealing a first chamber against a second chamber, which is arranged between a first machine element and a second machine element, wherein a relative movement occurs between the the first machine element and the second machine element, the sealing arrangement comprising:

a sealing element which has a first sealing element lip, a second sealing element lip, and an axially extending sleeve section,

wherein the axially extending sleeve section is abuttingly secured against the first machine element,

wherein the first sealing element lip is in sliding contact with the second machine element,

a lip element contacts both the first machine element and the second machine element, the lip element having a lip section, the lip element is fixedly secured to the first machine element, the lip section of the lip element is in sliding contact with the second machine element,

a reinforcement ring is disposed between the sealing element and the lip element such that the only contact between the sealing element and the lip element is contact between the second sealing element lip of the sealing element and the lip section of the lip element, the second sealing element lip extending obliquely toward the second machine element and being spaced from the second machine element since it contacts the lip element at a radial distance from the second machine element, an outer diameter of the reinforcement ring is larger than an outer diameter of the axially extending sleeve section

the lip element further comprising a conductive element for establishing electrical conductivity of the lip element, so that electrical conductivity is established between the first machine element and the second machine element by the lip element.

2. The sealing arrangement according to claim 1, wherein the lip element is an additional element beside the sealing element.

3. The sealing arrangement according to claim 2, wherein the lip element is arranged at an axial end of the sealing arrangement.

4. The sealing arrangement according to claim 2, wherein the reinforcement ring, when viewed in cross section, has first and second longitudinal ends and first and second radially extending axial surfaces extending therebetween, at least one of the first and second longitudinal ends and at least one of the first and second radially extending axial surfaces is overlapped and in contact with the lip element.

5. The sealing arrangement according to claim 2, wherein the lip section comprises at least one recess along a circumference of the lip section.

6. The sealing arrangement according to claim 2, further comprising a plurality of recesses arranged equidistantly along a circumference of the lip section.

7. The sealing arrangement according to claim 1, wherein the lip section defines a plurality of recesses along a circumference thereof.

8. The sealing arrangement according to claim 1, the lip element further comprising an elastic material and is provided with at least one layer of an electrical conductive material.

9. The sealing arrangement according to claim 8, wherein the at least one layer consists of carbon.

10. The sealing arrangement according to claim 8, wherein the at least one layer is applied by ion beam technology.