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Class Information
Number: 285/179
Name: Pipe joints or couplings > Elbow
Description: Subject matter comprising a fitting having only two openings with the axis of the openings intersecting at an angle.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5615481 |
Method and apparatus for the production of circumferentially compressible pipe fittings |
Apr. 1, 1997 |
| 5597185 |
One piece tubular elbow and process of manufacture |
Jan. 28, 1997 |
| 5590916 |
Renewable wear-proof elbow with a detachable buffer chamber |
Jan. 7, 1997 |
| 5586791 |
Push-fit connector for joining a fluid line to a pipe |
Dec. 24, 1996 |
| 5533763 |
Elbow with access opening |
Jul. 9, 1996 |
| 5531484 |
Elbow provided with guide vanes |
Jul. 2, 1996 |
| 5524674 |
Inductive welding of thermoplastic pipe |
Jun. 11, 1996 |
| 5515696 |
Receiver/drier/filter assembly |
May. 14, 1996 |
| 5482088 |
Supports double-containment systems with axial-guiding and flexibility |
Jan. 9, 1996 |
| 5456499 |
Hull fitting |
Oct. 10, 1995 |
| 5452922 |
Elbow fittings with expanded outer annulus space for double-containment assemblies |
Sep. 26, 1995 |
| 5449204 |
Double containment fitting |
Sep. 12, 1995 |
| 5443580 |
Compact fitting |
Aug. 22, 1995 |
| 5431456 |
Pipe fitting |
Jul. 11, 1995 |
| 5397155 |
Air duct fitting |
Mar. 14, 1995 |
| 5392803 |
Apparatus and method for installing valves |
Feb. 28, 1995 |
| 5390968 |
Flat elbow/one direction tee fitting |
Feb. 21, 1995 |
| 5388865 |
Pressure regulator vent piping coupler |
Feb. 14, 1995 |
| 5351996 |
Plumbing system with connector between a flexible pipe conduit laid underneath plaster and a fitting to be arranged outside the plaster |
Oct. 4, 1994 |
| 5324001 |
Sewer transfer system |
Jun. 28, 1994 |
| 5316349 |
Tube connecting element of plastic for sanitary and heating purposes |
May. 31, 1994 |
| 5303961 |
System for ensuring ready access to fire hydrant without sacrificing adjacent parking space for motor vehicles |
Apr. 19, 1994 |
| 5301984 |
Wear resistant pipe elbow |
Apr. 12, 1994 |
| 5294154 |
Temporary selective pipe connection apparatus with multiple inlets and outlets |
Mar. 15, 1994 |
| 5288111 |
90 degree elbow for pneumatic transport pipes |
Feb. 22, 1994 |
| 5275440 |
Double-layer pipe bend with intermediate support layer |
Jan. 4, 1994 |
| 5257825 |
Barb and swivel spout elbow fittings |
Nov. 2, 1993 |
| 5251938 |
Adapter pipe fitting for sprinkler or drip-type irrigation systems |
Oct. 12, 1993 |
| 5226476 |
Heat exchanger with bent inlet and outlet tube branches, and a method of making such branches |
Jul. 13, 1993 |
| 5215335 |
Fitting for pressurized fluid lines and method for making same |
Jun. 1, 1993 |
| 5199746 |
Connector structure for mixed type of faucet |
Apr. 6, 1993 |
| 5188396 |
Rebuildable slurry conduit elbow |
Feb. 23, 1993 |
| 5186502 |
Double-containment pipe fittings and system |
Feb. 16, 1993 |
| 5145217 |
Universal dryer duct and vent |
Sep. 8, 1992 |
| 5094491 |
Hydraulic fitting nut lock |
Mar. 10, 1992 |
| 5090743 |
Compressible fitting and associated method |
Feb. 25, 1992 |
| 5063968 |
Swivelable quick connector assembly |
Nov. 12, 1991 |
| 5060984 |
Short radius, low wear elbow |
Oct. 29, 1991 |
| 5056831 |
Fitting construction for connection of pipes and pipe assembly |
Oct. 15, 1991 |
| 5054819 |
Plumbing elbows or bends |
Oct. 8, 1991 |
| 5042845 |
Filler adapter |
Aug. 27, 1991 |
| 5039135 |
Drain trap with ice plug prevention |
Aug. 13, 1991 |
| 5039136 |
Stabilizing fitting for gases and fluids |
Aug. 13, 1991 |
| 5031755 |
Pipe line termination system |
Jul. 16, 1991 |
| 5031940 |
Water supply elbow within a plastic housing comprising three or more parts, connectable to plastic conductors with a plastic spiral covering of varying diameters |
Jul. 16, 1991 |
| 5024466 |
Wear-prevention structure for pneumatic conveying pipe elbow |
Jun. 18, 1991 |
| 5022684 |
BNB clamp |
Jun. 11, 1991 |
| 5016923 |
Erosion resistant elbow conduit |
May. 21, 1991 |
| 5016924 |
Joint elbow assembly for wiring |
May. 21, 1991 |
| 5015015 |
Clip securing arrangement for ventilation systems |
May. 14, 1991 |
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