公开(公告)号：US20220072601A1

公开(公告)日：2022-03-10

申请号：US17527509

申请日：2021-11-16

Applicant: HVAC Inventors/Systemation, Inc.

Inventor： David E. Daw ,  John T. Ehling

IPC: B21D53/04 ,  B21D5/16

Abstract: An apparatus and method are disclosed for the automated manufacture of a duct flange profile to make small duct fittings, including a TDF duct flange profile. The duct flange profile is directed to small part duct fittings with section widths up to about 16 inches in 20 to 26 gauge metal. The apparatus includes a bending head assembly having a drive roller, a pressure roller, an anvil and a bending leaf and a roll form assembly.

公开(公告)号：US11697147B2

公开(公告)日：2023-07-11

申请号：US17527509

申请日：2021-11-16

Applicant: HVAC Inventors/Systemation, Inc.

Inventor： David E. Daw ,  John T. Ehling

IPC: B21D53/04 ,  B21D5/16 ,  F24F13/02

CPC classification number: B21D53/04 ,  B21D5/16 ,  F24F13/0209

Abstract: An apparatus and method are disclosed for the automated manufacture of a duct flange profile to make small duct fittings, including a TDF duct flange profile. The duct flange profile is directed to small part duct fittings with section widths up to about 16 inches in 20 to 26 gauge metal. The apparatus includes a bending head assembly having a drive roller, a pressure roller, an anvil and a bending leaf and a roll form assembly.

公开(公告)号：US11213878B2

公开(公告)日：2022-01-04

申请号：US16802838

申请日：2020-02-27

Applicant: HVAC Inventors/Systemation, Inc.

Inventor： David E. Daw ,  John T. Ehling

IPC: B21D5/16 ,  F24F13/02 ,  B21D53/04

Abstract: An apparatus and method are disclosed for the automated manufacture of a duct flange profile to make small duct fittings, including a transverse duct flange duct flange profile. The duct flange profile is directed to small part duct fittings with section widths up to about 16 inches in 20 to 26 gauge metal. The apparatus includes a bending head assembly having a drive roller, a pressure roller, an anvil and a bending leaf and a roll form assembly.

公开(公告)号：US12257618B1

公开(公告)日：2025-03-25

申请号：US18896191

申请日：2024-09-25

Applicant: HVAC Inventors/Systemation, Inc.

Inventor： David E. Daw ,  John T. Ehling

IPC: B21D39/02 ,  B21D51/06 ,  B23P19/00 ,  F24F13/02

Abstract: Apparatus and methods are described for automatically closing the seam of duct work and for automatically inserting angle plates into duct work and then closing the seam of the duct work. The seam closing apparatus includes a first seam closing members for closing the top and bottom portions of the seam and a second seam closing member for closing the remainder of the seam of the duct work.