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Class Information
Number: 29/890.149
Name: Metal working > Method of mechanical manufacture > Gas and water specific plumbing component making > Elbow or l-shaped fitting making
Description: Process wherein the manufactured article is an accessory part or component especially adapted for use in a fluid system, which part or component has a form or configuration similar to the bent joint in the human arm or to the 12th letter of the English alphabet.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7415765 |
Flange coupling and manufacturing method for the same |
Aug. 26, 2008 |
| 7328510 |
Elbow rotator |
Feb. 12, 2008 |
| 7254980 |
Gas supply tube and method of making same |
Aug. 14, 2007 |
| 7096585 |
Apparatus and method for automated production of adjustable duct member |
Aug. 29, 2006 |
| 6832623 |
Gas meter valve and method |
Dec. 21, 2004 |
| 6643930 |
Method and apparatus for producing end flange member for cylindrical duct |
Nov. 11, 2003 |
| 6591650 |
High-pressure bulge-forming apparatus |
Jul. 15, 2003 |
| 6382679 |
Meter loop frame assembly |
May. 7, 2002 |
| 5979202 |
Method and apparatus for making pipe line steel grooved-end fittings |
Nov. 9, 1999 |
| 5775736 |
Plastic pipe fittings |
Jul. 7, 1998 |
| 5765285 |
Method of bending a rigid thermoplastic pipe |
Jun. 16, 1998 |
| 5625948 |
Method for producing a pipe and apparatus for the same |
May. 6, 1997 |
| 5615481 |
Method and apparatus for the production of circumferentially compressible pipe fittings |
Apr. 1, 1997 |
| 5473815 |
Method for producing a connector for fluid pipe elements |
Dec. 12, 1995 |
| 5257825 |
Barb and swivel spout elbow fittings |
Nov. 2, 1993 |
| 5189790 |
Method of fabricating a double walled pipe elbow |
Mar. 2, 1993 |
| 5051076 |
Two-cylinder-type rotary compressor system having improved suction pipe coupling structure |
Sep. 24, 1991 |
| 5014424 |
Method of making a curved pipe |
May. 14, 1991 |
| 4998337 |
Method for the permanent mutual connection of already finished metal tubes |
Mar. 12, 1991 |
| 4991293 |
Means for providing very small bend radii in the tube-like structures |
Feb. 12, 1991 |
| 4694547 |
One-piece metal covering for insulated pipe bends |
Sep. 22, 1987 |
| 4489585 |
Production of tubular members |
Dec. 25, 1984 |
| 4400863 |
Method of making a rigid fiberglass duct having an integral bendable elbow |
Aug. 30, 1983 |
| 4346740 |
Pipe elbow insulator and protective jacket therefor |
Aug. 31, 1982 |
| 4106797 |
Reinforced fitting construction |
Aug. 15, 1978 |
| 4106322 |
Press for pressing pipe fittings |
Aug. 15, 1978 |
| 3979809 |
Pipe elbow and method of making same |
Sep. 14, 1976 |
| 3977706 |
Pipe elbow |
Aug. 31, 1976 |
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