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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7658090 | Grid bending machine A grid bending machine is provided for bending a workpiece. The machine includes first and second guides having inner surfaces defining a cavity therebetween. A stationary anvil is mounted to the first and second guides. A first die is releaseably connected to the s... | 02/09/2010 |
| 7325435 | Method of manufacturing, apparatus and resulting irregular shaped cross section tubes A method and apparatus for making a tube having an inverted cross section and the resulting tube made thereby. ... | 02/05/2008 |
| 7004005 | Method and apparatus for producing pipe from metal plate A bending press for bending metal plates for the production of large diameter pipe has an articulation for the upper die member which reduces bending moments as applied to the bending sword or ram. The articulation can be between the upper die and the foot of the be... | 02/28/2006 |
| 5956991 | Forming device for shaped decoration panels A forming device to shape decoration panels having relieved contours features a design that includes an upper and a lower laminated spring, a flexible die within a frame formed by a spiral strip spring, and a plurality of movable rollers. The purpose of t... | 09/28/1999 |
| 5505070 | Method for forming a sloped bottom tank An improved tank bottom configuration formed from a flat metal plate of square or rectangular shape is disclosed. The plate is sheared to provide two adjacent sides which are tapered along their lengths and a notch is cut in each corner portion. By the us... | 04/09/1996 |
| 5501094 | Method for bending a metal thin plate In the configuration wherein a metal thin plate is pressed by dies 2 to a punch 1 having unload channels 1b and 1c which elongates from one end of the punch 1 to the position corresponding to a tab-bent portion 60a of a workpiece 60, the edge portions of ... | 03/26/1996 |
| 5099670 | Plate bending machine The machine includes a U-shaped princer (12) with a pair of arms (14, 16) which carry a V-sectioned linear punch (P) and a V-sectioned linear die (D) respectively. The punch (P) is fixed and the die (D) is movable. The U-shaped pincer (12) is mounted so t... | 03/31/1992 |
| 5099675 | Punch and die assembly for bending operations A punch and die assembly including a punch having an outer surface conforming generally to a configuration desired for a sheet metal part to be produced and adapted for rectilinear movement in a given direction between retracted and extended positions, th... | 03/31/1992 |
| 5036694 | Method and apparatus for bending the flange of a workpiece A device for bending a workpiece having a substantially planar leg fixed to a substantially planar cap at an initial angle comprises a block bar having a rounded bending surface for contacting the leg of a workpiece and a punch for urging the leg of the w... | 08/06/1991 |
| 5027633 | Box makers forms A method of bending rule to be used to cut a slot as part of a box makers form comprising locating the rule tangentially of a pair of rollers and driving a former between the rollers so that the rule pivots around the rollers as it is bent.... | 07/02/1991 |
| 4991422 | Plate bending machine The machine includes a U-shaped pincer (12) with a pair of arms (14, 16) which carry a V-sectioned linear punch (P) and a V-sectioned linear die (D) respectively. The punch (P) is fixed and the die (D) is movable. The U-shaped pincer (12) is mounted so th... | 02/12/1991 |
| 4637282 | Method of making clear dies from bar stock A method and apparatus for making cutting dies having sidewalls diverging from the cutting edge from thin bar stock having an internal side and an external side. A section of bar stock is cut at least as long as the perimeter of the die. Starting at one e... | 01/20/1987 |
| 4488425 | Bending tool A bending tool for bending elongate members. The bending tool includes a support (12a/28) such as a support frame (28) for supporting the elongate member (40) and also includes a bending member (15a/32/34) such as a pusher member (15a) whereby the bending... | 12/18/1984 |
| 4081987 | Curling punch A power brake punch for curl forming radii of greater than 180° of arc on the edge of sheet metal workpieces.... | 04/04/1978 |
| 4012936 | Method and device for bending pipes A method and apparatus for bending tubular bodies, wherein elemental tubular sections are gradually shifted with respect to each other, without rotation, in a V-shaped bend from a central bend section. The apparatus includes two slidingly fitted supports ... | 03/22/1977 |
