Butt connection between two air duct sections made sheet of metal
AssigneeMETU-System Meinig KG
InventorManfred Meinig
Life of this patent
Estimating the term…
Abstract
A butt connection between two air duct sections made of sheet metal has two flange frames fastened to opposed ends of two duct sections. Each flange frame is L-shaped in radial section, having an outer radially extending flange leg and an inner flange leg in a duct section, each flange frame comprising a hollow into which a leg of an L-shaped intermediate connection is fitted. Each flange frame is connected to the other flange frame, as by bolts, etc. The butt connection is equally applicable to duct sections which are of round, flattened oval, and rectangular cross sections, with the same flange frame shapes and essentially the same intermediate connector being usable.
Claims19
A butt connection for connecting the ends of two duct sections made of sheet metal comprising:
- a circumferentially extending flange frame at the end of each duct section of substantially L-shape radial cross section, each flange frame having an inner flange leg within a duct section, said inner flange leg comprising means for providing a hollow inwardly of said duct section, and a circumferential and outwardly extending outer flange leg outwardly of the duct section, said outer flange leg comprising a hollow forming with said hollow providing means an L-shaped hollow, the outer flange leg of one flange frame being in opposed facing relationship to the outer flange leg of the other flange frame,
- an intermediate connector of substantially L-shape radial cross section at the end of each duct section, each intermediate connector having an outer flange leg substantially perpendicular to and outwardly of the duct section in said hollow and an inner flange leg substantially parallel to and inwardly of the duct section in said hollow defining means,
- means for connecting each flange frame to a duct section, and
- means for connecting the outer flange legs of the said flange frames to each other in said opposed facing adjacent relationship.
The butt connection of claim 2, wherein at least one of the flange frames has circumferentially spaced ends, the inner flange leg of the intermediate connector in the one frame substantially engaging the interior of the duct section to which the one frame is connected.
Dependencies are inferred from the claim text.