| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 072149000 | By use of work-contacting wiper and moving, work-holding form | 19 |
| 20080236234 | Rotary draw tube bender - The invention is a rotary draw bending machine and process for bending materials such as tubes or pipes into precise bends. A spindle holds a bending die, and a radial arm holds a counter-die. The spindle and arm are simultaneously rotated in opposite directions by a dual hydraulic drive controlled by an electro-hydraulic control system with foot pedal controls. The bend angle is preset by a protractor-like dial and limit switch mechanism. The radial arm has a slide track to align the counter-die with the bending die. The ratchet mechanism has teeth to allow incremental advancement of the counter-die when aligning it with its bending die to accurately set the gap between the dies. The machine is used with a wide variety of dies to bend a wide variety of workpiece diameters. The ratchet mechanism preferably includes a fine tuning device to provide an infinite range of alignment positions. | 10-02-2008 |
| 20090095044 | METHOD FOR PROLONGING SERVICE LIFE OF A MACHINE FOR BENDING TUBES - A method for prolonging service life of a machine for bending tubes comprises flame spraying a coating of less than 0.1 mm of molybdenum or molybdenum alloy to at least one surface of a fold smoothing tool. | 04-16-2009 |
| 20090173127 | TUBE-BENDING MACHINE - The invention belongs in the field of machines for bending tubes and refers in particular to a machine ( | 07-09-2009 |
| 20090188291 | Powered conduit bender - A portable powered conduit bender comprises a housing including a gripping handle. A battery powered drive in the housing has a drive gear. A conduit guide is secured to the housing. A bracket is secured to the housing defining a pivot connection. A head is pivotally connected to the bracket at the pivot connection. The head comprises a shoe defining a downwardly opening arcuate channel selectively positionable proximate the guide. A hook is proximate one end of the shoe for engaging a conduit received in the channel. A driven gear operatively engages the drive gear to controllably pivot the head. In use, the guide supports a conduit engaged by the hook and pivotal movement of the shoe driven by the powered drive deforms the conduit as it passes by the guide. | 07-30-2009 |
| 20100107715 | BENDING APPARATUS AND BENDING METHOD - A bending apparatus ( | 05-06-2010 |
| 20100223971 | MACHINE FOR BENDING A PROFILE IN TWO BENDING DIRECTIONS AND BENDING TOOL - The invention relates to a machine for bending a profile in two bending directions, that comprises a bending tool including at least two clamping forms ( | 09-09-2010 |
| 20110030436 | LOWER DIE FOR PRESS BENDING AND TOOL USING THE SAME - In order to achieve a bending operation which provides a U-shaped metal piece of increased depth and to provide a bending operation safe to an operator involved in the bending operation, the invention is a lower die for press bending which includes: a block body which includes a groove on an upper surface thereof, the groove extending in a right and left direction, and the block body being fixed to a bending machine; and a rotating block which is received by the groove of the block body and is capable of oscillating about an axis of the groove, wherein a process groove is formed on an upper surface of the rotating block to receive a blade edge of an upper die. The block body includes a front shoulder and a rear shoulder at the front and rear sides of the groove. A level difference is defined between these shoulders such that the front shoulder is smaller in height than the rear shoulder. | 02-10-2011 |
| 20130333434 | Wedge Driven Pipe Bending Machine - A pipe bending machine has a stiff-back which is driven by a pivoting wedge. A linkage applies force from the actuator to the wedge in a direction parallel to a longitudinal axis of the stiff-back. The stiff-back pivots on a first fulcrum and the wedge slides on a bed which pivots on a second fulcrum. The actuator drives the wedge between the stiff-back and the bed to rotate the stiff-back at the first fulcrum and bend the pipe seated in the stiff-back against the pipe bending face of a die. The conversion of the longitudinal force applied to the wedge into a transverse force applied to the stiff-back provides a significant mechanical advantage which varies directionally as the stiff-back rotates about its fulcrum to maintain a constant force on the stiff-back. | 12-19-2013 |
| 20150135789 | Tube Bending Machine With Reversible Clamp Assembly - A tube bending machine for bending a length of a tubular workpiece and an associated tube feeder assembly are disclosed. The tube feeder assembly has a carriage assembly slidably mounted along a rail. A clamp assembly is reversibly mounted to and carried by the carriage assembly. The clamp assembly is adapted to be releasably secured to the workpiece. The clamp assembly and carriage assembly are configurable to align the workpiece central axis along the rail, whereby sliding of the carriage assembly with the workpiece mounted in the clamp assembly carries the workpiece along the rail. | 05-21-2015 |
| 072150000 | With core inside hollow workpiece | 3 |
| 20080295559 | Machine for Cambering, Forming, Folding or Bending Bars, Wires or Extruded Shapes - The invention concerns a machine for cambering, forming, folding or bending a bar, a wire or an extruded shape. The invention includes a bending form provided with a clamping system, a device for orienting the tube, and a bending jaw ( | 12-04-2008 |
| 20110088443 | Supporting Core for Producing Hollow Profiled Elements - A supporting core for using in a device for forming plates into a structured hollow profile and a method for producing structured hollow profiles from a plate, which on the one hand ensures an all-over support of the plate, and still enables the production of hollow profiles with a variable cross-section or a curved course, is provided by including individual supporting members, which when pushed together at least in part form as a surface an inner contour of the hollow profile to be produced and are interconnected by means of coupling elements, wherein the coupling elements allow the supporting members to be pulled-apart, and wherein the supporting members are interconnected in a hinged manner in the pulled-apart position. | 04-21-2011 |
| 20150328671 | ROTARY-DRAW BENDING MANDREL WITH GALLING-RESISTIVE INSERTS - A galling-resistive insert is positioned on an outer surface of a mandrel assembly. The insert is secured at the outer surface of the mandrel assembly and functions to reduce galling of an inner surface of a tubular blank during a rotary-draw bending operation. | 11-19-2015 |
| 072156000 | And interrelated means to move form and gripper element thereon | 1 |
| 20100180653 | ROTARY-DRAW BENDING DIE WITH ECCENTRIC CLAMPING - In a rotary-draw bending die with eccentric clamping for bending elongate workpieces such as pipes, wires, profile strands or the like, comprising a twistable bending mandrel, a clamp die which is associated with said bending mandrel, can be moved relative to the same and can be brought from an opened position remote from the same in which a workpiece to be bent can be inserted between bending mandrel and clamp die to a clamping position on the bending mandrel or vice-versa and is freely twistable about a swivel axis which is offset eccentrically in relation to the rotational axis of the bending mandrel, which swivel axis is disposed on a rotary plate which is rotatable relative to the bending mandrel, the clamp die is freely twistable about the swivel axis and can be moved between its clamping position and its opened position by twisting the rotary plate relative to the bending mandrel. | 07-22-2010 |
| 072157000 | Including interchangeable or adjustable wiper or form | 1 |
| 20080202186 | INSERTED WIPER DIE FOR HIGH-PRESSURE TUBE-BENDING AND METHOD OF USING SAME - The present invention is a wiper die assembly that combines the performance of a solid-body wiper die with the economy of a inserted wiper die for high-pressure rotary-draw tube-bending. The key features of the present invention are: [1] A wiper insert attached to the wiper holder by a mechanical means that retains the bore of the insert as a smooth, uninterrupted working surface, and [2] radius face support shoe attached to the wiper holder that can be adjusted to support and stabilize the entire wiper assembly against the cavity of the bend die. | 08-28-2008 |
| 072159000 | And work-complementing gripper faces (e.g., contoured) | 5 |
| 20090126438 | DEVICE FOR BENDING TUBES OR PROFILED SECTIONS WITH SYMMETRICAL STRUCTURE FOR TWO-WAY BENDING AND MACHINE EQUIPPED WITH SAME - The invention relates to a bending head, for example, for a rotary draw bending technique, of the type including a bend form clamp assembly set in rotation about an axis and at least one roller keeping a tube or a profiled section clamped against the bend form during bending. The single assembly can be positioned in one or other of two bending starting positions that are symmetric with respect to the axis of the tube so as to allow either bending in one direction of bending starting from, or bending in an opposite direction starting from (P | 05-21-2009 |
| 20140326033 | DIE AND COUNTER-DIE TYPE BENDING MACHINE FOR RIGHT-HAND AND LEFT-HAND BENDING AN ELONGATED PIECE - A die and counter-die type bending machine for right- and left-hand bending an elongated piece (P) has a roller-shaped die ( | 11-06-2014 |
| 20150040634 | BENDING MACHINE HAVING A BENDING HEAD THAT IS MOVABLE ABOUT A STATIONARY BENDING SHANK - The machine for cambering, shaping, bending or curving a bar along a bending axis includes an arm, a bending shank supported by the arm, a bending head including a bending lug that is rotatable relative to the bending axis, and a feeding station for moving the bar along an axis of travel and across the bending shank. The bending head also includes: a first connecting rod supporting the bending lug and having a head, a second connecting rod having a head, the heads being coupled so as to rotate relative to a hinge axis perpendicular to the axis of travel, a first driver for translating a leg of the first connecting rod along an axis parallel to the axis of travel, and a second driver for translating a leg the second connecting rod along an axis parallel to the axis of travel. | 02-12-2015 |
| 20150314353 | COUNTER-MATRIX WITH INSERTS FOR METAL PIPES BENDING MACHINES AND BENDING MACHINE WITH SAID COUNTER-MATRIX - Counter-matrix having a removable insert at an end and a roller at the other end, wherein the roller, exerting, an annular groove thereof, only the function of guiding the metal pipe being processed and by eliminating any sliding friction with the pipe, reduces the strain of the pipe bending machines. The insert has a semi-cylindrical work surface with a smaller radius or equivalent to the nominal external radius of the pipe. The insert is preferably tilted with respect to the geometric axis of the pipe or metal section, coinciding with the insertion direction of the pipe in the pipe bending machines | 11-05-2015 |
| 20160175908 | MACHINING UNIT AND MACHINING APPARATUS | 06-23-2016 |
