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"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7752878 | Servo-press with energy management In a press installation including a number of presses with servo-drives for operating the presses and auxiliary equipment such as workpiece handling devices wherein an energy management system is provided including a DC voltage intermediate circuit connected to a po... | 07/13/2010 |
| 7398667 | Die cushion drive system A die cushion drive system provided with a servo motor serving as a source of drive power for a die cushion of a press machine and a power circuit with a regeneration function which regenerates energy from the servo motor and returns it to an AC power supply, whereb... | 07/15/2008 |
| 7360385 | Quick change bend tooling bolster A tube bending assembly adapted for use with a rotary draw bender, and preferably including a bend die mounting unit for securing a plurality of stacked bend dies drivenly coupled to the bender, a bend die tower unit for structurally supporting the bend die mounting... | 04/22/2008 |
| 5442846 | Procedure and apparatus for cold joining of metallic pipes Joinder of two adjacent segments of steel pipe having an outer diameter of at least 12 inches, by a bridging sleeve, the sleeve being joined to both pipe segments by magnetic forming. Apparatus enabling the process includes a segmented ring-shaped coil br... | 08/22/1995 |
| 5042279 | Bending machine There is disclosed a bending machine adapted to bend a pipe and other such workpiece in three-dimensional directions. The bending machine comprises a first actuator for vertically moving bend dies to select one of the bend dies for use, and a second actua... | 08/27/1991 |
| 4796487 | High torque drive means for two very close shafts which are also subjected to strong axial thrusts and application thereof to a double screw extruder An apparatus for rotationally driving two closely spaced shafts comprises a driven gear on each shaft and two drive apparatus for driving each of the driven gears. The shafts are constrained to rotate at the same speed by interengaging teeth of the driven... | 01/10/1989 |
| 4041751 | Burring device with oppositely acting deburring elements One or both opposite side portions of an edge of a workpiece of sheet material are peened to smoothness by two coacting peening tools in the form of collars oppositely acting upon said side portions through coaction with a rotary hammer resiliently carrie... | 08/16/1977 |
| 4004529 | Can head seaming method and apparatus A cylindrical metal barrel is joined to the heads or closures on opposite ends by the bending together of the annular material of the head and respective barrel end to form the usual double seam made by seamer rolls brought to engagement by means of cams.... | 01/25/1977 |
