Slip on groove coupling with multiple sealing gasket

Patent metadata

Field	Value
Publication number	US-10047885-B2
Application number	US-201514837475-A
Country	US
Kind code	B2
Filing date	Aug 27, 2015
Priority date	Jun 30, 2008
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

Couplings and gaskets are disclosed. Couplings may include an upper housing, a lower housing, at least one fastening device coupling the upper housing to the lower housing, and a gasket positioned within the upper and lower housings, the gasket including two primary seals and a rib protruding from an inner surface of the gasket and between the two primary seals.

First claim

The invention claimed is:

1. A coupling for joining a first pipe and a second pipe, the coupling comprising:
an upper housing comprising a first key at a first axial end configured to engage within a groove of the first pipe and a second key at a second axial end configured to engage within a groove of the second pipe;
a lower housing comprising a first key at a first axial end configured to engage within the groove of the first pipe and a second key at a second axial end configured to engage within the groove of the second pipe;
at least one fastening device coupling the upper housing to the lower housing; and
a gasket positioned within the upper and lower housings, the gasket including
two primary seals, each primary seal formed on an outer edge of the gasket, and a rib protruding from an inner surface of the gasket and between the two primary seals, the rib defining a sealing surface contactable with an exterior surface of the first pipe when the first key of each of the upper housing and the lower housing is engaged within the groove of the first pipe and the second key of each of the upper housing and the lower housing is engaged within the groove of the second pipe,
wherein the sealing surface defines a first axially outer edge and a second axially outer edge,
wherein the rib further defines a cylindrical section facing radially inward, the cylindrical section being cylindrical when the at least one fastening device is in an untightened condition, the cylindrical section defined between the first axially outer edge and the second axially outer edge,
wherein the rib further comprises a secondary seal, the secondary seal configured to contact the exterior surface of the first pipe and the exterior surface of the second pipe when the first pipe and the second pipe are joined end-to-end,

the coupling adapted to slide over the first pipe such that the at least a portion of the first pipe extends axially beyond each outer edge of the gasket while the coupling remains in an assembled state, the coupling further adapted to join and seal the first pipe and the second pipe while the coupling remains in an assembled state.

2. The coupling of claim 1 , wherein an innermost diameter of the gasket is larger than an outer diameter of the first pipe and the second pipe when the at least one fastening device is in an untightened condition.

3. The coupling of claim 1 , wherein each primary seal includes a gripping extension.

4. The coupling of claim 1 , wherein each primary seal has a rounded interior end.

5. The coupling of claim 1 , wherein the cylindrical section covers a seam defined between the first pipe and the second pipe when the first pipe and the second pipe are joined end-to-end.

6. The coupling of claim 1 , wherein an innermost diameter of the gasket is defined by the secondary seal, and wherein an inner diameter of the cylindrical section is greater than the innermost diameter of the secondary seal.

Assignees

• Anvil Int Llc

Inventors

• Vandal Peter Joseph
• Compton Douglas

Classifications

• Y10T29/49872

  Confining elastic part in socket · CPC title

• Y10T137/0447

  Including joint or coupling · CPC title

• B23P19/04

  for assembling or disassembling parts · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title

• F16L21/02 Primary

  with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings (F16L21/06, F16L21/08 take precedence; if adjustability is essential F16L27/00) · CPC title