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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 |
| 4416474 |
Pipe coupling |
Nov. 22, 1983 |
| 4415188 |
Automobile exhaust pipe clamping device |
Nov. 15, 1983 |
| 4410206 |
Flange connection for rectangular air-conditioning ducts |
Oct. 18, 1983 |
| 4407534 |
Arrangement for connecting edge areas of thin-walled bodies |
Oct. 4, 1983 |
| 4349220 |
Raintight wireway |
Sep. 14, 1982 |
| 4328981 |
Duct structure with reinforced end flanges |
May. 11, 1982 |
| 4304427 |
Duct-damper interface adaptor |
Dec. 8, 1981 |
| 4304423 |
Apparatus for air conducting duct |
Dec. 8, 1981 |
| 4294474 |
Prefabricated chimney-shaft |
Oct. 13, 1981 |
| 4294476 |
Connecting device |
Oct. 13, 1981 |
| 4288115 |
Duct jointing system |
Sep. 8, 1981 |
| 4288111 |
Joint construction for sheet metal ducts |
Sep. 8, 1981 |
| 4283080 |
Flange for a duct |
Aug. 11, 1981 |
| 4283080 |
Flange for a duct |
Aug. 11, 1981 |
| 4270251 |
Muffler clamp and method of making same |
Jun. 2, 1981 |
| 4265473 |
Means and technique for interconnecting the ends of spaced coaxial conduits with an expansion joint having a reduced axial dimension |
May. 5, 1981 |
| 4252350 |
Joint assembly for air duct |
Feb. 24, 1981 |
| 4251094 |
Spirally wound corrugated pipe connector |
Feb. 17, 1981 |
| 4244609 |
Sheet-metal corner piece for joining profiles of gas duct flange joint |
Jan. 13, 1981 |
| 4229863 |
Saddle clamp assembly |
Oct. 28, 1980 |
| 4218079 |
Flange type duct joint assembly |
Aug. 19, 1980 |
| 4215518 |
Flanged corner construction and method |
Aug. 5, 1980 |
| 4183557 |
Insulative flexible connector |
Jan. 15, 1980 |
| 4174985 |
Process for manufacturing coupling gaskets for helically corrugated spiral pipe |
Nov. 20, 1979 |
| 4173361 |
Down spout adaptor assembly |
Nov. 6, 1979 |
| 4163572 |
Transition fitting |
Aug. 7, 1979 |
| 4160559 |
Reinforce tee section for chimney |
Jul. 10, 1979 |
| 4149740 |
Pipe coupling device |
Apr. 17, 1979 |
| 4147382 |
Connecting piece for a branch duct to a substantially round air conditioning duct |
Apr. 3, 1979 |
| 4142743 |
Clamping device |
Mar. 6, 1979 |
| 4141577 |
Saddle clamp and method of manufacture |
Feb. 27, 1979 |
| 4141575 |
Coupling sleeve |
Feb. 27, 1979 |
| 4133566 |
High pressure duct clamp and method of use |
Jan. 9, 1979 |
| 4124236 |
Coupling for helically corrugated spiral pipe |
Nov. 7, 1978 |
| 4123094 |
Duct joint assembly |
Oct. 31, 1978 |
| 4122586 |
Pipe clamp saddle |
Oct. 31, 1978 |
| 4123093 |
Ductboard collar |
Oct. 31, 1978 |
| 4099749 |
Coupling sleeve |
Jul. 11, 1978 |
| 4099747 |
Air duct connecting assembly |
Jul. 11, 1978 |
| 4082322 |
Chimney construction for heating fixtures |
Apr. 4, 1978 |
| 4082325 |
Coupling device for connecting a plurality of ports to one pipe |
Apr. 4, 1978 |
| 4060265 |
Pipe construction |
Nov. 29, 1977 |
| 4058329 |
Connecting piece for mounting a ventilation element in an opening in a ceiling or wall |
Nov. 15, 1977 |
| 4054306 |
Tube and cylindrical surface sealing apparatus |
Oct. 18, 1977 |
| 4049298 |
Compression coupling |
Sep. 20, 1977 |
| 4046409 |
Joining arrangement for ventilation ducts and the like |
Sep. 6, 1977 |
| 4040449 |
Oil-tight lay-in duct |
Aug. 9, 1977 |
| 4009895 |
Knock-down duct collar |
Mar. 1, 1977 |
| 4009894 |
Fitting for insulated duct |
Mar. 1, 1977 |
| 4006922 |
Non-threaded tubing connector |
Feb. 8, 1977 |
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