Duct fastseam
AssigneeMet-Coil Systems Corporation
InventorsJOHN J. TOBEN, ASHOK M. SHAH, RICHARD F. BLUM, MICHAEL C. BORWIG
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Abstract
A seam for ductwork has a male end portion integrally formed at a distal end of a duct wall and a female end portion integrally formed at another distal end of the duct wall. The female end portion includes a first fold and a second fold, which define a female groove for accommodating the male portion. A distal end of the second fold is bent transverse to the female groove prior to the male portion being inserted into the female groove.
Claims13
A seam for ductwork, said seam having a male end portion integrally formed with said ductwork, said seam comprising:
- a female end portion integrally formed with said ductwork;
- wherein said female end portion includes a first fold and a second fold, said first and second folds defining thereby a female groove for accommodating said male end portion therein;
- wherein a distal end of said second fold is bent away from said female groove prior to said male end portion being inserted into said female groove;
- and
- wherein said female groove lies adjacent an outer surface of said ductwork.
A seam for ductwork having a male end portion integrally formed at a distal end of a duct wall, said seam comprising:
- a female end portion integrally formed at another distal end of said duct wall;
- and
- wherein said female end portion includes a first fold which is bent to extend in a first direction substantially parallel to said duct wall, a second fold which is bent at an open angle and extends in a second direction to define a female groove for accommodating said male end portion therein, and a sealing fold integrally formed at a distal end of said second fold, said sealing fold being bent at a sealing angle to said second fold prior to said male portion being inserted into said female groove.
A seam for ductwork having a male end portion integrally formed at a distal end of a duct wall, said seam comprising:
- a female end portion integrally formed at another distal end of said duct wall;
- and
- wherein said female end portion includes a first fold bent to extend inwardly and substantially perpendicular to said duct wall, a second fold bent to extend in a direction substantially parallel to said duct wall, a third fold bent back upon said second fold, and a fourth fold bent at an open angle from said third fold and defining thereby a female groove for accommodating said male portion therein.
Dependencies are inferred from the claim text.