| Patent Number |
Title Of Patent |
Date Issued |
| D475781 |
Coupling ring for ventilation ducts |
June 10, 2003 |
|
| D461887 |
Coupling ring for ventilation ducts |
August 20, 2002 |
|
| D456072 |
Coupling ring for ventilation ducts |
April 23, 2002 |
|
| D456071 |
Coupling ring for ventilation ducts |
April 23, 2002 |
|
| D454949 |
Coupling ring for ventilation ducts |
March 26, 2002 |
|
| D453042 |
Coupling ring for ventilation ducts |
January 22, 2002 |
|
| D447223 |
Sealing rings for ventilation ducts |
August 28, 2001 |
|
| D386246 |
Circular sleeve coupling |
November 11, 1997 |
|
| D383196 |
Circular sleeve coupling |
September 2, 1997 |
|
| D383195 |
Circular sleeve coupling |
September 2, 1997 |
|
| D379358 |
Clinching roller |
May 20, 1997 |
|
| D376193 |
Helically wound lock-seam tube |
December 3, 1996 |
|
| D363115 |
Component part of a T-piece |
October 10, 1995 |
|
| D362300 |
Circular sleeve coupling |
September 12, 1995 |
|
| D362299 |
Circular sleeve coupling |
September 12, 1995 |
|
| D361829 |
Circular sleeve coupling |
August 29, 1995 |
|
| D360021 |
Circular sleeve coupling |
July 4, 1995 |
|
| D360020 |
Circular sleeve coupling |
July 4, 1995 |
|
| D360019 |
Circular sleeve coupling |
July 4, 1995 |
|
| D360018 |
Circular sleeve coupling |
July 4, 1995 |
|
| 6758502 |
Coupling ring for ventilation ducts, and method of connecting ventilation ducts |
July 6, 2004 |
| A flanged coupling ring for a duct element has a mounting section configured to be mounted or a connection portion of the duct element, and flange means extending outwards from the mounting section. The flange means has, along its periphery, flanged coupling portions for connecting t |
| 6561228 |
Helically wound lock seam tube |
May 13, 2003 |
| In a method for producing helically wound lock-seam tubing, a metal strip is fed to a forming head in which the tubing is formed. In order to frictionally interlock this lock seam, a flexible string is inserted into and compressed in the lock seam during manufacture. |
| 6513553 |
Helically wound lock-seam tube |
February 4, 2003 |
| In a method for producing helically wound lock-seam tubing, a metal strip is fed to a forming head in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device form interlocking spaced deformations on the lock-seam. An apparatus for such production compris |
| 6170883 |
Tubular element with sealing means and a method for manufacturing the tubular element |
January 9, 2001 |
| A tubular element has a sealing ring mounted at an end of the tubular element. The sealing ring has a base clamped against the outer surface of the tubular element. Further, the sealing ring has a sealing lip adapted to seal against an inner surface of an outer tube, in which the tubular |
| 6085801 |
Helically wound lock-seam tube |
July 11, 2000 |
| In a method for producing helically wound lock-seam tubing, a metal strip is fed to a forming head in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device form interlocking spaced deformations on the lock-seam. An apparatus for such production compris |
| 6003220 |
Method and apparatus for producing helically wound lock-seam tubing |
December 21, 1999 |
| In a method for producing helically wound lock-seam tubing, a metal strip is fed to a forming head in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device form interlocking spaced deformations on the lock-seam. An apparatus for such production compris |
| 5720095 |
Method and apparatus for producing helically wound lock-seam tubing |
February 24, 1998 |
| In a method for producing helically wound lock-seam tubing, a metal strip is fed to a forming heed in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device forms interlocking spaced deformations on the lock-seam. An apparatus for such production co |
| 5618142 |
Self-drilling blind rivet and method for making a pressure tight riveted joint by means of the s |
April 8, 1997 |
| A self-drilling blind rivet includes a deformable sleeve and a shaft having a drill bit at one end. The shaft extends through the sleeve and the drill bit is connected to one end of the sleeve. The shaft and sleeve are rotatable as a unit. A method for making a riveted joint with a s |
| 5531460 |
U-shaped sealing device on a pipe |
July 2, 1996 |
| A sealing device on a pipe includes an elastic sealing ring of generally U-shaped cross-section, which is clamped on the pipe by a clamping strap. The U-flanges of the sealing ring are so loaded by the pressure exerted by the clamping strap on the U-web of the sealing ring as to occupy a |
| 5473815 |
Method for producing a connector for fluid pipe elements |
December 12, 1995 |
| A kit for producing a non-straight connector for fluid pipe elements comprises loose sleeve couplings and at least one flat blank which has been given such a shape and such dimensions that, after forming thereof and interconnecting its opposite ends, it is connectable with the sleeve |
| 5405174 |
Kit and method for producing a connector for fluid pipe elements |
April 11, 1995 |
| A kit for producing a non-straight connector for fluid pipe element comprises loose sleeve couplings and at least one flat blank which has been given such a shape and such dimensions that, after forming thereof and interconnecting its opposite ends, it is connectable with the sleeve |
