# US 4,394,024 A · Seal for use with pipes to be fitted one into another with spigot and socket ends

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- Number: US 4,394,024 A
- Document ID: US4394024A
- Status: Granted
- Kind: A
- Application number: 06/269,718
- Filed: 1981-06-02
- Granted: 1983-07-19
- Earliest claimed: 1980-06-04
- Assignees: Rubber-en Kunststoffabriek ENBI B.V.
- Inventors: Johannes C. Delhaes
- Web page: https://patentgrep.com/patent/US4394024A

## CPC

- E03F 3/04: Pipes or fittings specially adapted to sewers (manufacture of concrete tubes B28; pipes or pipe fittings in general F16L)
- F16L 17/035: the sealing rings having two lips parallel to each other
- E03F: SEWERS; CESSPOOLS
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

## Abstract

A seal for use with pipes to be inserted one into another with spigot and socket ends, comprising a sealing sleeve made of an elastomeric material and arranged in the socket, wherein the sleeve is provided with a radially resilient element, the arrangement being such that, after being mounted in the socket, the seal is clamped in the socket by the radial resilience of said element.

## Claims

### Claim 1

A seal for use with pipes to be inserted one into another by means of spigot and socket ends comprising a sealing sleeve made of an elastomeric material, said sleeve being clamped within the socket by a radially resilient bushing provided with outward corrugations extending parallel to the axis of said bushing, said bushing is provided with a collar which is segmented by cuts extending throughout the entire width of said collar.

### Claim 2 (depends on 1)

A seal according to claim 1 wherein the sealing sleeve comprises a cylindrical portion provided with recesses extending parallel to the axis of said cylindrical portion, a hammerhead-shaped gasket at one end of the sealing sleeve and a flange at the other end of the sealing sleeve provided with recesses extending throughout the entire width of said flange.

### Claim 3 (depends on 2)

A seal according to claim 2 wherein the outward corrugations of the radially resilient bushing extend into the recesses of the cylindrical portion of the sealing sleeve.

### Claim 4 (depends on 2)

A seal according to claim 2 wherein the segments of the collar extend into the recesses of the flange of the sealing sleeve.

### Claim 5 (depends on 1)

A seal according to claim 1 wherein the outward corrugations of the radially resilient bushing are located in the same radial plane as the cuts of the collar.

### Claim 6 (depends on 1)

A seal according to claim 1 which comprises a radially biased mounting means.