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| Number | Title | Issue Date |
| 7225737 | Method for automated platemaking A computer-to-plate (CTP) machine is operated using processless printing plates. A plate bender is built directly into the CTP, bending the plate after imaging in order to make it ready for mounting on the printing press, eliminating all intermediate steps. For pres... | 06/05/2007 |
| 7191631 | Sheet metal bending brake with improved hinge A sheet metal bending brake having a frame with a sheet metal support surface. A clamping jaw is movable relative to the frame support surface to clamp the sheet metal between the clamping jaw and the frame. The clamping jaw has a linear front edge. An elongated ben... | 03/20/2007 |
| 6959580 | Sheet metal bending brake A sheet metal bending brake having a frame with a planar work supporting surface and a plurality of spaced frame members extending over the work support surface. Each frame member has a throughbore and these throughbores are aligned with each other. A plurality of e... | 11/01/2005 |
| 6955071 | Mechanical bending apparatus A mechanical bending device (8) for bending flat workpieces (6) has at least one bending tool assembly (9) which includes at least one tool part that can move by means of a bending tool drive (27). When acted on by the tool part that move... | 10/18/2005 |
| 6941788 | Bending brake for flat blank The invention concerns a brake (1) comprising at least a platen (2) co-operating with a press (3) for immobilizing a blank section to be bent, the platen (2) being extended by a table (4) hinged to the platen (2) via a hinge... | 09/13/2005 |
| 6925846 | Portable mini-break A sheet metal bending tool for bending materials, such as flat metal sheets is disclosed. The tool has a restraining base for receiving and cooperatively holding a sheet metal workpiece and the tool has a bending component that is rotatably mounted to the restrainin... | 08/09/2005 |
| 6792785 | Contact surface structure of bending die The present invention provides a bending die in which the fixed die 1 and the rotary die 2 are surface contacted to each other, the rotary die 2 is rotated rearward after press forming to cause the workpiece 3 to be moved away from the di... | 09/21/2004 |
| 5657662 | Bending brake platform Conventional sheet bending brakes are modified to provide a platform which is easy to assemble or disassemble and which is positioned at the top of the brake for ease of working the sheet material comprising platform brackets which are secured to the uppe... | 08/19/1997 |
| 5502993 | Method of and apparatus for punching and bending a lithographic plate Apparatus for bending a lithographic plate having an image thereon, comprising an inspection system for (a) inspecting a plate held on a table at an inspection station, (b) determining the extent to which the plate needs to be adjusted relative to a prede... | 04/02/1996 |
| 5454247 | Method of and apparatus for punching and bending a lithographic plate Method of and apparatus for punching and bending a lithographic plate to match a particular press so that when the plate is subsequently mounted on that particular press, it is oriented to print a properly positioned image on a print surface. The method c... | 10/03/1995 |
| 5255607 | Method and apparatus for maintaining registration when making a printing plate A printing plate making apparatus for color printing is provided with a depicting section for recording an image on the surface of a printing plate, a processing section for processing the printing plate, with a processing solution, while conveying the pr... | 10/26/1993 |
| 5094095 | Printing plate bending apparatus A printing plate end bending apparatus utilizes a machine table having a printing plate abutment surface together with plate leading and trailing end support saddles which each also have plate end abutment surfaces. Each plate end saddle is provided with ... | 03/10/1992 |
| 5007264 | Method and apparatus for the bending of workpieces In a method for the bending of workpieces by swivel bending jaws, the bent-off part is to assume a predetermined bending angle with respect to the workpiece, for this purpose, in a first bending operation, at least one corresponding leg is to be bent off ... | 04/16/1991 |
| 4635456 | Device for shot-peening inside surface of U-bend region of heat exchanger tubing Apparatus (10) for imparting protecting compressive stresses to the inside surfaces of a U-shaped heat exchanger tube (12) in order to eliminate or substantially reduce residual tensile stresses within the U-bend region of the U-shaped heat exchanger tube... | 01/13/1987 |
| 4598568 | Bending device for offset printing plates Bending device for offset printing plates having a support plate formed with a head portion, a respective bending bar pivotally mounted at opposite ends of the head portion for bending respective ends of a printing plate disposed on the head portion, a lo... | 07/08/1986 |
| 4578980 | Angle indicator for hand operated sheet metal brake An angle indicator for use with hand operated sheet metal brakes having a bed (A), a beam (B), an apron (C), a hinge rod (G) disposed substantially colinear with a desired bend line (D) to be formed in a worksheet (E), an apron mounted hinge rod receiving... | 04/01/1986 |
| 4510785 | Automatic sheet metal folding machine An automatic sheet metal folding machine comprises two gripping members and upper and lower folding members disposed respectively above and below the gripping members. The folding members are pivotally mounted about pivot axes generally fixed during foldi... | 04/16/1985 |
| 4494397 | Portable sheet bending brake A sheet bending brake comprising a plurality of C-shaped frame members that support a first member. The first member has a clamping surface. A second member is hinged to the first member and has a bending surface. A plurality of bars are pivoted to the fr... | 01/22/1985 |
| 4455857 | Forming press for bending a blank Forming press for making perimetral bends on metal sheets or plates comprising a support structure having a C-shaped cross section with horizontal arms, a fixed lower counterblade, and an upper blank counterblade, movable in a vertical direction, a cutter... | 06/26/1984 |
| 4385513 | Forming presses Forming press for making perimetral bends on metal sheets or plates comprising a support structure having a C-shaped cross section with horizontal arms, a fixed lower counterblade, and an upper blank counterblade, movable in a vertical direction, a cutter... | 05/31/1983 |
| 4364254 | Combined sheet bending brake, table and coil support A combined sheet bending brake, table and coil support. The sheet bending brake includes a base, a first bending member having a clamping surface mounted on the base and a second bending member having a bending surface hinged to the first member, an anvil... | 12/21/1982 |
| 4327570 | Apparatus for bending strip material into toothed shape For bending strip material into toothed shape, the strip is introduced once into a pair of toothed jaws and a bending member is moved from one end position to another to bend the strip about one end tooth, one end flank of which is exposed. The strip is r... | 05/04/1982 |
| 4218909 | Plate bender A bending machine for forming offset printing plates and conversion components for converting older model plate benders into bending machines capable of forming reverse bend plates. The plate bender includes a table support for the plate to be bent. The t... | 08/26/1980 |
| 4185487 | Side access cleat former apparatus and method of use A cleat-former machine, of the type which utilizes two rotating wipers, permits removal of formed cleats sideward from either end of the bending blade, and can be used with workpieces whose length exceeds that of the wipers. L-shaped side plates, which su... | 01/29/1980 |
| 4173137 | Bending fixture for offset plates A bending fixture for offset plates provided with positioning holes, the bending fixture including a platform having bending bars pivotally mounted at opposite ends thereof and plate hold-down members coacting therewith, where the hold-down members are ra... | 11/06/1979 |
| 4112731 | Light gauge sheet metal forming machine A semi-automatic sheet metal forming machine for forming light gauge metal having a bed formed of a plurality of adjustable and interchangeable spaced spacer plates of various widths, a forming bar having a plurality of removable and interchangeable formi... | 09/12/1978 |
| 4111027 | Electromagnetic apparatus The invention provides a tool particularly adapted for working metal. The tool comprises an electromagnetic coil, a pole adapted to be magnetized by the coil, and a work surface pivotable with respect to the pole and operative in use to apply bending forc... | 09/05/1978 |
| 4092841 | Sheet metal brake A bending brake for sheet metal employs a long, upwardly facing fixed clamping surface supported on a base, and a long bending arm hinged to one edge of the clamping surface. An upper clamping surface is supported for movement toward and away from the fix... | 06/06/1978 |
| 4089198 | Extenable tool and machine having the same Apparatus for making folds or bends of adjustable length in sheet metal. The apparatus includes a retractable chain-like die which can be shortened or lengthened so as to adjust the operative length of the die.... | 05/16/1978 |
| 4081986 | Wide-range sheet material bending brake To bend sheet metal through a wide angle into an acute angle, this bending brake has a foundation carrying a stationary workpiece-clamping structure including multiple J-shaped stationary workpiece-clamping jaw supports disposed in spaced parallel relatio... | 04/04/1978 |
| 3983735 | Cleat forming method and machine The method of fabricating the sheet metal duct units of the present invention comprises cutting a plurality of spaced lines of notches in an elongated strip of sheet metal, each of the lines being transverse to the longitudinal axis of the strip. The stri... | 10/05/1976 |
