Seal, screw connection having the seal, and use thereof

Patent metadata

Field	Value
Publication number	US-9239074-B2
Application number	US-201214363312-A
Country	US
Kind code	B2
Filing date	Nov 7, 2012
Priority date	Dec 12, 2011
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

A seal of a fastening element, having the fastening element and a washer, wherein the fastening element and the washer are arranged coaxially and axially adjacent to one another, wherein the washer has a sealing bead of a rubber-elastic sealing material on the outer circumference, and wherein the sealing bead contacts the fastening element underside in a sealing manner during the correct use of the seal. The fastening element has a flange on the underside, which axially faces the washer, wherein the a washer top side axially faces the flange, wherein the flange underside and the washer top side abut in a sealing manner during the correct use of the seal, wherein the flange underside and the washer top side are substantially congruent, and wherein the sealing bead abuts the outer circumferential boundary of the flange underside in a sealing manner.

First claim

The invention claimed is:

1. A seal of a fastening element, the seal comprising:
the fastening element; and
a washer for the fastening element,
wherein the fastening element and the washer are arranged coaxially and axially adjacent to one another,
wherein the washer includes a sealing bead including a flexible rubber sealing material on an outer circumference,
wherein the sealing bead is configured to contact a fastening element underside in a sealing manner during correct use of the seal,
wherein the fastening element includes a flange on a flange underside, the flange underside axially facing the washer,
wherein the washer includes a washer top side axially facing the flange,
wherein the flange underside and the washer top side rest on one another in a sealing manner during the correct use of the seal,
wherein the flange underside and the washer top side are substantially congruent, and
wherein the sealing bead rests on an outer circumferential boundary of the flange underside in a sealing manner, and
wherein the sealing bead has a substantially funnel-shaped surface on a sealing bead top side, the sealing bead top side axially facing the flange underside.

2. The seal of claim 1 , wherein the fastening element is configured as a screw or as a nut.

3. The seal of claim 2 , wherein the fastening element is configured as the nut and the nut is configured as a cap nut.

4. The seal of claim 1 , wherein the fastening element and the flange are configured to merge integrally into one another.

5. The seal of claim 1 , wherein a surface of the sealing bead top side is configured to be self-centering.

6. A screw connection, comprising:
the seal of claim 1 ,
wherein the fastening element is arranged in a hole in a machine element,
wherein the sealing bead is arranged, with resilient axial pre-tension, in a sealing manner between the flange underside of the fastening element and the machine element.

7. The seal of claim 1 , wherein the substantially funnel-shaped surface is widened radially outwards at least in two stages.

Assignees

• Lauer Frank
• Eckstein Julia
• Mitschkal Christian
• Kramer Thomas
• Freudenberg Carl Kg

Inventors

• Lauer Frank
• Eckstein Julia
• Mitschkal Christian
• Kramer Thomas

Classifications

• F16B43/001 Primary

  for sealing or insulation · CPC title

• F16J15/127

  the reinforcement being a compression stopper · CPC title