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Class Information
Number: 285/183
Name: Pipe joints or couplings > Elbow > Sheet metal
Description: Devices in which the material is originally in sheet form.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7393021 |
HVAC duct system |
Jul. 1, 2008 |
| 7360799 |
Insulation cladding for bends |
Apr. 22, 2008 |
| 7210505 |
Elbow for a conduit |
May. 1, 2007 |
| 6588802 |
Two-part, clamp-connected chimney flue tee |
Jul. 8, 2003 |
| 6474697 |
Exhaust elbow |
Nov. 5, 2002 |
| 6471251 |
Spirally corrugated pipe elbow and method for manufacturing same |
Oct. 29, 2002 |
| 6431611 |
Two piece universal elbow |
Aug. 13, 2002 |
| 6230418 |
Low profile dryer exhaust vent system |
May. 15, 2001 |
| 6185837 |
Anti-torsion dryer connection |
Feb. 13, 2001 |
| 6098312 |
Exhaust vent adapter for a clothes dryer |
Aug. 8, 2000 |
| 5957506 |
Sheet-metal insulated register box with adjustable elbow fitting |
Sep. 28, 1999 |
| 5941231 |
Vertical or horizontal vent assembly |
Aug. 24, 1999 |
| 5511829 |
Universal connector for downspout drainage extension |
Apr. 30, 1996 |
| 5405174 |
Kit and method for producing a connector for fluid pipe elements |
Apr. 11, 1995 |
| 5375891 |
Universal connector for downspout drainage extensions |
Dec. 27, 1994 |
| 5288111 |
90 degree elbow for pneumatic transport pipes |
Feb. 22, 1994 |
| 5199190 |
Universal appliance venting assembly |
Apr. 6, 1993 |
| 5145217 |
Universal dryer duct and vent |
Sep. 8, 1992 |
| 5121948 |
Dryer duct and vent assembly including a flexible duct portions |
Jun. 16, 1992 |
| 4694547 |
One-piece metal covering for insulated pipe bends |
Sep. 22, 1987 |
| 4440337 |
Method of producing similar deep-drawn parts |
Apr. 3, 1984 |
| 4294474 |
Prefabricated chimney-shaft |
Oct. 13, 1981 |
| 4288111 |
Joint construction for sheet metal ducts |
Sep. 8, 1981 |
| 4193759 |
Rotary kiln with a plurality of planetary cooling tubes |
Mar. 18, 1980 |
| 4054985 |
Method for the application of a protection cover around heat or cool insulated tube bends |
Oct. 25, 1977 |
| 4009894 |
Fitting for insulated duct |
Mar. 1, 1977 |
| 3988030 |
Slip-joint coupling, method of installing same and frame subassembly for use therewith |
Oct. 26, 1976 |
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