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| Number | Title | Issue Date |
| 4130004 | Method for bending tubes A tube bend is started by compresssion bending and continued by draw bending. Conventional bending equipment is employed with one die slightly modified so that normal machine operation causes the pressure die to initially operate in a compression bending ... | 12/19/1978 |
| 4126030 | Retractable pressure die In a machine for draw bending pipe, a long pressure die that moves with the pipe during the bend is provided with a retractable rear section. Both sections are used for a large degree of bend but when a bend of lesser degree is made near the end of the pi... | 11/21/1978 |
| 4122525 | Method and apparatus for profile scanning Inspection and verification of configuration of a bent tube is achieved by placing the tube upon a conveyor that moves past a pair of mutually orthogonal optical scanners. Interruptions of a light beam at boundaries of the passing tube are used together w... | 10/24/1978 |
| 4080814 | Set-up guide for bending machine Positioning of a pipe longitudinally and rotationally for each of a number of bends is facilitated by means of a fitting attached to the pipe end and connected with longitudinal and rotational displacement encoders that generate electrical signals. The si... | 03/28/1978 |
| 4078411 | Floating clamp die A clamp die for urging a tube against a rotatable bend die is mounted for limited translational and rotational motion so that its tube receiving cavity will accommodate and receive a portion of a bend previously made in the tube. Thus, one bend may be sta... | 03/14/1978 |
| 4063441 | Apparatus for bending tubes A tube bend is started by compression bending and continued by draw bending. Conventional bending equipment is employed with one die slightly modified so that normal machine operation causes the pressure die to initially operate in a compression bending m... | 12/20/1977 |
| 3974676 | Tube bending machine and carriage therefor A tube bending machine includes a carriage mounted rotatable chuck for grasping and positioning a length of tube with respect to the bending head of the machine. Motion of the carriage along the bed of the machine toward the bending head and rotation of t... | 08/17/1976 |
| 3949582 | Positioning servo and controlled mechanism A tube bending machine includes a carriage mounted rotatable chuck for grasping and positioning a length of tube with respect to the bending head of the machine. Motion of the carriage along the bed of the machine toward the bending head and rotation of t... | 04/13/1976 |
| 3944798 | Method and apparatus for measuring direction Measurement of a vector inn space is accomplished by an articulated five axis probe carrying a working head that can be moved into a measuring position that has a known angular relation to an object to be measured. A plurality of pivotally interconnected ... | 03/16/1976 |
