Method and apparatus for attaching flange portions to ducts

Abstract

A flange to be assembled to a duct member includes a plurality of pre-fabricated apertures or areas of weakened wall strength for receiving fasteners to assemble the flange to the end of a duct member. The apertures may be spaced apart such that the fasteners can be inserted at regular intervals along the length of the flange and the length of the end of the duct member.

1 . A duct member panel flange, comprising:
 a first wall member;   a second wall member, which wall members are configured to receive a duct member panel there between, wherein at least a portion of the first wall member and at least a portion of the second wall member extend substantially parallel one another;   wherein at least one of the first wall member or the second wall member includes a plurality of first pre-fabricated fastener entry areas; and   an intermediate member connected to the first and second wall members, the intermediate member having a plurality of second pre-fabricated fastener entry areas.   
     
     
         2 . The flange of  claim 2 , wherein the first pre-fabricated fastener entry areas and the second pre-fabricated fastener entry areas are apertures or indentations, or some combination thereof. 
     
     
         3 . The flange of  claim 1 , wherein the plurality of first pre-fabricated fastener entry areas includes a plurality of first pre-fabricated apertures disposed in the first wall member, and a plurality of second pre-fabricated apertures disposed in the second wall member, wherein the first pre-fabricated apertures are substantially aligned with the second pre-fabricated apertures. 
     
     
         4 . The flange of  claim 1 , wherein the intermediate member includes a rib disposed proximate the first wall member. 
     
     
         5 . The flange of  claim 4 , wherein the intermediate member includes a first flange panel connected to a second flange panel, and first flange panel includes the rib. 
     
     
         6 . A method for manufacturing a duct member panel flange, comprising:
 forming a flange into a unitary configuration that includes a first wall member, a second wall member, and an intermediate member connected to the first and second wall members, wherein at least a portion of the first wall member and at least a portion of the second wall member extend substantially parallel one another;   forming a plurality of first pre-fabricated fastener entry areas within at least one of the first wall member or the second wall member; and   forming a plurality of second pre-fabricated fastener entry areas within the intermediate area.   
     
     
         7 . The method of  claim 6 , wherein the first pre-fabricated fastener entry areas and the second pre-fabricated fastener entry areas are apertures or indentations, or some combination thereof. 
     
     
         8 . The method of  claim 6 , wherein the step of forming a plurality of first pre-fabricated fastener entry areas includes forming a plurality of first pre-fabricated apertures disposed in the first wall member and a plurality of second pre-fabricated apertures disposed in the second wall member, wherein the first pre-fabricated apertures are substantially aligned with the second pre-fabricated apertures. 
     
     
         9 . The method of  claim 8 , wherein the step of forming the flange into the unitary configuration includes forming the intermediate member to include a first flange panel connected to a second flange panel, and the rib extending outwardly from first flange panel. 
     
     
         10 . The method of  9 , wherein the step of forming the flange into the unitary configuration includes forming the rib to extend outwardly from the first flange panel in a direction that is substantially parallel to the first wall member, and is spaced apart from the first wall member.