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Class Information
Number: 285/424
Name: Pipe joints or couplings > Materials > Sheet
Description: Subject matter which includes material originally in sheet form.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6109665 |
Butt joint of air duct sections |
Aug. 29, 2000 |
| 6089624 |
Pipe lap joint with improved collapsible slot |
Jul. 18, 2000 |
| 6062608 |
Coaxial flue-system for direct-vent fireplaces |
May. 16, 2000 |
| 6062610 |
Device for the coupling together of pipes |
May. 16, 2000 |
| 6050613 |
Combined plastic pipe coupler and end plug |
Apr. 18, 2000 |
| 6026803 |
Coupling with built-in gasket and mechanical locking device |
Feb. 22, 2000 |
| 6012745 |
Tube connection of two overlapping tubes and method of making same |
Jan. 11, 2000 |
| 5957506 |
Sheet-metal insulated register box with adjustable elbow fitting |
Sep. 28, 1999 |
| 5934710 |
Device for the sealed butt connection of two metal pipes |
Aug. 10, 1999 |
| 5909904 |
Flange joint assemblies |
Jun. 8, 1999 |
| 5878786 |
Otangular fitting family for flat-oval duct systems and method for making same |
Mar. 9, 1999 |
| 5868434 |
Shell for pipe repair |
Feb. 9, 1999 |
| 5865478 |
Coupling device for duct |
Feb. 2, 1999 |
| 5803512 |
Tube quick connect to female socket |
Sep. 8, 1998 |
| 5794322 |
Tool for installing clip on duct flanges |
Aug. 18, 1998 |
| 5741029 |
Piping adapter |
Apr. 21, 1998 |
| 5718463 |
Tube quick connect to female socket |
Feb. 17, 1998 |
| 5673947 |
Device for butt joining of ducts for carrying gaseous medium and having a rectangular or square cross section |
Oct. 7, 1997 |
| 5653482 |
Seal system for duct network |
Aug. 5, 1997 |
| 5607355 |
Mounting bracket for damper |
Mar. 4, 1997 |
| 5603533 |
Tube flange assembly |
Feb. 18, 1997 |
| 5590477 |
Dryer vent box and method |
Jan. 7, 1997 |
| 5588680 |
Pipe lap joint with improved collapsible sealing zone |
Dec. 31, 1996 |
| 5564758 |
Angled plates for connecting ducts |
Oct. 15, 1996 |
| 5538293 |
Secondary duct installation apparatus and method for a forced air ventilation system |
Jul. 23, 1996 |
| 5518277 |
Single piece duct connector for leakfree attachment to sidewall of highly flexible trunkline duct |
May. 21, 1996 |
| 5484172 |
Pipe connection |
Jan. 16, 1996 |
| 5470112 |
Adjustable coupling ring |
Nov. 28, 1995 |
| 5458380 |
Pipe joint |
Oct. 17, 1995 |
| 5450879 |
Cornerless slip-on flange system for duct connections |
Sep. 19, 1995 |
| 5449208 |
Track switch snow melter duct connection system |
Sep. 12, 1995 |
| 5435606 |
Device for joining trays for electrical conduits |
Jul. 25, 1995 |
| 5429116 |
Adjustable ventilator |
Jul. 4, 1995 |
| 5423576 |
Corner pieces for improved duct connector |
Jun. 13, 1995 |
| 5421624 |
Flange joint assembly |
Jun. 6, 1995 |
| 5411299 |
Interconnecting apparatus and method for air handling systems |
May. 2, 1995 |
| 5409266 |
Adjustable roof jack |
Apr. 25, 1995 |
| 5405174 |
Kit and method for producing a connector for fluid pipe elements |
Apr. 11, 1995 |
| 5393106 |
Sealed knock-down duct collar |
Feb. 28, 1995 |
| 5390967 |
Flexible vent pipe connector system |
Feb. 21, 1995 |
| 5378028 |
Apparatus for connecting oval duct sections |
Jan. 3, 1995 |
| 5363837 |
Outer housing of kitchen smoke exhauster |
Nov. 15, 1994 |
| 5356184 |
Corner pieces for improved duct connector |
Oct. 18, 1994 |
| 5352855 |
Junction clamp for wiring harness |
Oct. 4, 1994 |
| 5352000 |
Flange connector for air duct with detent adjacent sealing material |
Oct. 4, 1994 |
| 5342100 |
Angle plates for transverse duct flanges |
Aug. 30, 1994 |
| 5328213 |
Adjustable pipe fitting |
Jul. 12, 1994 |
| 5314212 |
Duct connector for leakfree attachment to the curved sidewall of highly flexible trunkline duct |
May. 24, 1994 |
| 5275449 |
Elongated member for joining ducts |
Jan. 4, 1994 |
| 5271648 |
Clamping and connecting means |
Dec. 21, 1993 |
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