- 专利标题： METHOD AND APPARATUS FOR ATTACHING FLANGE PORTIONS TO DUCTS
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申请号： US16246621申请日： 2019-01-14
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公开(公告)号： US20190316804A1公开(公告)日： 2019-10-17
- 发明人: Alain Denis Richard , Richard Carl Houle , Michael Paul Houle
- 申请人： RAM Developing LLC
- 主分类号： F24F13/02
- IPC分类号： F24F13/02 ; F16L23/16 ; F16L23/14 ; F16B25/10
摘要：
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.
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