Fitting to be connected to at least one pipe and method for establishing a connection

Patent metadata

Field	Value
Publication number	US-11092265-B2
Application number	US-201816494061-A
Country	US
Kind code	B2
Filing date	Mar 14, 2018
Priority date	Mar 15, 2017
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

The invention relates to a fitting to be connected to at least one pipe, in particular a plastic pipe or plastic-metal composite pipe, having a main body, having at least one supporting body connected to the main body for insertion into a pipe end and having at least one pressing sleeve connected to the main body for receiving the pipe end, the pressing sleeve having a cylindrical pressing section. The technical problem of improving the fitting for pressing, in particular with small motor-driven or manually driven pressing tools, is solved by the fact that the pressing sleeve is made of a metal with a microhardness of less than 65 HV 1, in particular less than 50 HV 1, preferably in the range from 40 to 50 HV 1 measured according to Vickers, and that the ratio of wall thickness of the pressing section to the outer diameter of the pressing section is less than 0.06, preferably in the range from 0.03 to 0.06. The invention also relates to a method for establishing a connection.

First claim

The invention claimed is:

1. A fitting to be connected to at least one pipe, comprising:
a main body,
at least one supporting body connected to the main body for insertion into a pipe end, and
at least one pressing sleeve connected to the main body for receiving the pipe end,
wherein the pressing sleeve has a cylindrical pressing portion,
characterised in that,
the pressing sleeve is made of a metal with a microhardness of less than 65 HV as measured according to Vickers, and
the ratio of wall thickness of the pressing section to the outer diameter of the pressing section is less than 0.06.

2. The fitting according to claim 1 ,
characterised in that,
the ratio of the length of the pressing section to the outer diameter of the pressing section is greater than 0.4.

3. The fitting according to claim 1 ,
characterised in that,
the pressing sleeve is made of copper or aluminum.

4. The fitting according to claim 1 ,
characterised in that,
the distal end of the pressing sleeve is flanged outwards, and
the proximal end of the pressing sleeve has an outwardly projecting bead.

5. The fitting according to claim 1 ,
characterised in that,
the distal end of the pressing sleeve is flanged outwards, and
a retaining ring connected to the main body is provided for attaching the pressing sleeve.

6. The fitting according to claim 1 ,
characterised in that,
the proximal end of the pressing sleeve has an alternately interrupted edge with holding sections and recesses and
the recesses on the circumferential side release a total angular section of greater than 180°.

Assignees

• Viega Tech Gmbh & Co Kg

Inventors

• Schneider Andreas
• Kramer Dominik
• Schmitt David
• Riili Nadine
• Schmitt Detlev

Classifications

• F16L13/143 Primary

  with a sealing element placed around the male part before crimping or rolling · CPC title

• F16L2201/10

  Indicators for correct coupling · CPC title

• F16L33/2078 Primary

  connected to the rigid member via an intermediate element · CPC title

• F16L13/141

  by crimping or rolling from the outside · CPC title

• F16L33/2076

  by plastic deformation · CPC title