| Patent Number |
Title Of Patent |
Date Issued |
| 6997026 |
Quick change metal stud to hemmed track roll forming system |
February 14, 2006 |
| An apparatus and method for selectively forming metal stud and track members from sheet material, the apparatus including a stud forming assembly capable of transforming the sheet material into a stud member as the material exits the stud forming assembly, and a track forming assembl |
| 6810570 |
Method of attaching a connector element to a duct flange |
November 2, 2004 |
| A duct assembly for transporting pressurized fluid therethrough. The assembly includes first and second duct sections. Each of the duct sections has sides extending between opposite ends. Each of the sides join an adjacent side and has a flange extending laterally outward from each e |
| 6471256 |
Companion duct flanges |
October 29, 2002 |
| A duct assembly made from multiple duct sections for transporting pressurized fluid therethrough which can be formed simply by laborers at a building site or elsewhere and has a strong joint resistant to leakage. The joint rigidizes each duct section and the duct assembly, permitting |
| 6460573 |
Companion duct system |
October 8, 2002 |
| A duct assembly for transporting pressurized fluid therethrough. The assembly includes first and second duct sections. Each of the duct sections has sides extending between opposite ends. Each of the sides join an adjacent side and has a flange extending laterally outward from each e |
| 6345524 |
Rotatable head assembly for sheet metal coil straightener device |
February 12, 2002 |
| A straightener device for substantially removing the "coil set" from a sheet of coiled material including a base frame assembly and a head assembly rotatably mounted thereto, the head assembly including a pair of feed rollers and an idler roller, the pair of feed rollers being positi |
| 6292991 |
Apparatus and method for inserting corner members in channel-shaped flanges of a duct |
September 25, 2001 |
| Apparatus for inserting a corner member into channel-shaped flanges of a duct. The corner member has first and second legs. The duct includes longitudinally extending duct panels. The channel-shaped flanges of the duct extend laterally from at least one end of the duct panels. The ap |
| 6263557 |
Apparatus and method for inserting angle plates in channel shaped flanges of a duct |
July 24, 2001 |
| Apparatus for inserting a corner member into channel-shaped flanges of a duct. The corner member has first and second legs. The duct includes longitudinally extending duct panels. The channel-shaped flanges of the duct extend laterally from at least one end of the duct panels. The ap |
| 6081985 |
Method of inserting corner members in channel-shaped flanges of a duct |
July 4, 2000 |
| A method of inserting a corner member into channel-shaped flanges of a duct. The corner member has first and second legs. The duct includes longitudinally extending duct panels. The channel-shaped flanges of the duct extend laterally from at least one end of the duct channels. The me |
| 6047466 |
Apparatus and method for inserting angle plates in channel shaped flanges of a duct |
April 11, 2000 |
| Apparatus for removing a first angle plate from a stack of angle plates and inserting the first angle plate in channel shaped flanges of a duct. The first angle plate is the bottom-most angle plate of the stack before it is removed from the stack. The stack includes a second angle plate |
| 5353616 |
Pittsburgh seam closer having single seaming roll |
October 11, 1994 |
| For closing Pittsburgh-type rectilinear seams, as in conventional sheet metal heating and air conditioning ducts. The present machine, with only a single seaming roll, closes seams through 45.degree. to 90.degree. on an advancing stroke, and burnishes them on the return stroke. The machi |
| 4579375 |
Sheet metal duct system having integral transverse flanges |
April 1, 1986 |
| Integral transverse flanges on duct sections made up, for example, of two L-shaped work pieces, are readily assembled into permanent rigid section-joining frames. At the frame corners, the interfitted flanged ends of corner pieces are trapped, adjacent to the integral flange webs, behind |
