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| Number | Title | Issue Date |
| 7870773 | 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 t... | 01/18/2011 |
| 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 |
| 7299671 | Bending device for bending machine A bending device for bending machine comprises a matrix (2), a countermatrix (6), and a die (7) able to prevent wrinkles. A countermatrix-holder support element (8) is fixed on an upper slide (10), which is slidable transversally t... | 11/27/2007 |
| 7293444 | Bending apparatus for rod-shaped and tubular workpieces A bending apparatus for rod-shaped and tubular workpieces, includes a rotatable bending mandrel with a bending groove is provided with a wrinkle smoothener, which immediately precedes the bending mandrel, and two sliding jaws. In order to change the bending directio... | 11/13/2007 |
| 7290421 | Variable curvature tube and draw die therefor A tube is bent having a curved portion with a variable radius extending between first and second ends. The curved portion includes a circular arc portion with a constant radius and a clothoid transition portion with a variable radius. The circular arc portion extend... | 11/06/2007 |
| 7254972 | Moving mold mechanism of a pipe bending machine A pipe bending machine has a moving mold mechanism, which includes two mold seats positioned one above other, and pressing wheels on each mold seat to work with corresponding bending wheels of fixed molds of the machine; the mold seats are moved by means of a rotati... | 08/14/2007 |
| 7251976 | Apparatus and method for the noncircular bending of tubes A tube bending apparatus adapted for the noncircular bending of a tube includes a modified bend die, a modified wiper die, a translatable and pivotable element and an actuator. The bend die presents a noncircular bending profile having a linearly or nonlinearly incr... | 08/07/2007 |
| 7234338 | Tubing bender and method An improved tubing bender of the type having a mounting base, a mandrel mounted upon the mounting base and having a tube recess, and a tube retainer mounted upon the mounting base. It is improved by the tube retainer being mounted upon the mounting base by a snap-lo... | 06/26/2007 |
| 7213430 | Tube bending machine and its right and/or left bending device A tube-bending machine including a bending arm that is provided with a jaw support that moves horizontally in a direction of a bending head, whereby said jaw support is integral with a clamping jaw assembly that comprises at least one jaw for bending a tube clockwis... | 05/08/2007 |
| 7188504 | Wire bending device A wire bending device includes a bending head bearing two bending tools between which the wire to be bent is passed. Either tool is alternately capable of being fixed or being a pivot for rotation of the bending head therearound. The device also includes a mechanica... | 03/13/2007 |
| 7174760 | Dual-directional pipe-bending machine A dual-directional pipe-bending machine bends a pipe in either direction and has a base, a transporting device and a pipe-bending assembly. The base has a bracket. The transporting device is mounted slidably on the bracket. The pipe is mounted on the transporting de... | 02/13/2007 |
| 7162905 | Pipe bending pressure die with reversible exit block A pressure die having a base portion with an entrance block and an exit block attached thereto. The entrance block and exit block each have a groove adapted to receive the pipe. The curvilinear geometry of the groove of the exit block is constant so that the exit bl... | 01/16/2007 |
| 7159430 | Bending device with cutting mechanism The bending device with a cutting mechanism has a bending die corresponding to a desired bending shape, a bending arm that rotates on the bending die, and a clamping die on the bending arm that moves toward a longitudinal workpiece. Corresponding to rotation of the ... | 01/09/2007 |
| 7143621 | Guide support for a tube-bending machine A guide support for a tube bending machine comprising a base frame, a bending head, a bending arm, a bending roller, a locking jaw, sliding means for the displacement of the bending head in horizontal and vertical directions with respect to the base frame, at least ... | 12/05/2006 |
| 7131312 | Pipe bending apparatus and method A pipe bending apparatus for performing a pipe bending method, wherein the method includes filling a workpiece with a liquid, pressurizing the liquid to a target pressure level, and bending the workpiece to create a bent pipe. Preferably, the pressure level is inver... | 11/07/2006 |
| 7104100 | Bending device for tube A tube bending device having draw-bending and compression-bending functions and capable of bending in all processes in a unit of device is provided. The device performing bending by rotating the tube at a predetermined angle with the tube pressured against a circumf... | 09/12/2006 |
| 7096707 | Tube bender and method of using same A tube bender comprising a mandrel, a forming member connected to the mandrel for coaction with the mandrel to effectuate bending of a tube wherein the forming member has at least two bending positions defined thereon, a handle pivotally connected to said forming me... | 08/29/2006 |
| 7082798 | Pipe bending machine A pipe bending machine (1) includes a bending tool (3), a pipe feed unit (9) and a mandrel retractor (19). A pipe holder (8) of the pipe feed unit (9) and a mandrel bar support (24) of the mandrel retractor (19... | 08/01/2006 |
| 7076982 | Concentric bore bend die and clamp insert assembly A concentric bore bend die and clamp insert assembly including a bend die and a clamp insert positioned within a recess formed in the bend die in a tube clamping area of the bend die. The clamp insert includes a curved portion matingly received within a correspondin... | 07/18/2006 |
| 7032422 | Pipe bending processing apparatus and pipe bending processing method A pipe bending processing apparatus includes a drawing and bending section for pressingly contacting a drawing and bending mold, a clamp mold with one end of a pipe P and performing drawing and bending processing, compression bending section for pressingly contactin... | 04/25/2006 |
| 7024903 | Bending system with multilevel bending tool A bending system (1) on a bending machine for bending rod shaped and/or bar-shaped workpieces and especially pipes (4), incorporates at least one multilevel bending tool (3) with multiple bending levels arranged one above the other in the direct... | 04/11/2006 |
| 7021102 | Bending machine with bending tools on opposite sides of a tool platen A bending machine for the bending of rod-shaped and/or bar-shaped workpieces and especially of pipes incorporates a bending device (5) with bending tools (10, 11) that are provided on both sides of a tool platen (12). These bending tools (10,... | 04/04/2006 |
| 7017380 | Bending assembly for bending machine A bending assembly on a bending machine for the bending of rod and/or bar-shaped workpieces (8) includes a bending tool (10) and a bending drive unit (11) with a swivel arm (21) and a bending-drive motor (22). The bending tool (... | 03/28/2006 |
| 7010951 | Feeding mechanism of an automatic pipe bending machine A feeding mechanism of a pipe bending machine is equipped with several auxiliary hydraulic cylinders in addition to an original power source for providing power to feed a pipe; the auxiliary hydraulic cylinders are joined to an auxiliary fixing member at output rods... | 03/14/2006 |
| 6994819 | Method to locally reround plastic pipe An apparatus for rerounding plastic pipe includes a housing having a pipe passage extending therethrough. The housing has a moveable outer frame top positionable between an open position and a closed position to enclose a pipe to be rerounded. A pair of opposing jaw... | 02/07/2006 |
| 6978648 | Acetabular reamer lipping system and method A lipping tool for lipping an acetabular reamer, the lipping tool comprising a bending form having a bending form curved surface and a bending form axis of rotation; and a pressure tool having a pressure tool curved surface adjacent to and complimentary with the ben... | 12/27/2005 |
| 6976378 | Bending machine A bending machine according to the present invention include: a first fixture member 22 for holding one end portion of a long work 20; a second fixture member 24 for holding the other end portion of the work 20; a rack 30 mounted o... | 12/20/2005 |
| 6854311 | Bending machine for tubing, bar and the like A bending machine for the bending of tube, rod and bar shaped workpieces (24, 24a) includes a machine base unit (2), a collet (6) for mounting a workpiece, and a tool assembly (15) with at least one bending tool. The bending tool c... | 02/15/2005 |
| 6655183 | Lifting mechanism for a head member of a pipe bender A lifting mechanism for a head member of a pipe bender includes a connecting block and an oil cylinder. The connecting block is fixedly connected to the head member. The oil cylinder is horizontally fitted to the main body of the pipe bender. The connecti... | 12/02/2003 |
| 6651475 | Tube bending apparatus Apparatus and method for producing bends in tubes, including a bending die assembly having a fixed die section that is rigidly mounted to a support member and at least one a movable die section that is movable relative to the fixed section. When used to m... | 11/25/2003 |
| 6434993 | Bending machine for bending threadlike material such as tubes, rods profiles or metal wire A machine for bending threadlike material such as tubes, rods, profiles or metal wire comprises a machine bed, having parallel guides movably supporting a carriage for feeding, rotating and angularly locating the tube, the machine bed having a T-shape, th... | 08/20/2002 |
| 6345525 | Tube bending machine, magazine device thereof, and method for loading Tube bending machine including an elongate fixed frame secured at one of its ends to a bending head and to a bending arm pivoting about the bending head, a magazine device on the bending arm, the magazine device bearing pairs of clamping jaws with differe... | 02/12/2002 |
| 6079246 | Universal machine for bending pipes or section bars to both fixed and variable curvatures Machine for bending pipes or section bars comprising a work table on which two or more powered spindle noses appear, at least one of which is powered to rotate in a direction and at least another is idle or driven to rotate in the opposite direction to th... | 06/27/2000 |
| 5784913 | Pressure die assist boost system for tube bending machine A machine for cold bending a thick walled tube is provided which includes a rotatable bend die around which the tube is bent and a pressure die which engages an outer side wall of the tube tangential to the bend. The pressure die has a pinch-type tube gro... | 07/28/1998 |
| 5689988 | CNC-controlled pipe bending machine The pipe bending machine comprises a bending template (15) for bending the pipe therearound. The unbent pipe portion is supported on a pipe supporting rail (20) mounted on a pipe supporting rail carrier (25) and being adjustable in height. The height adju... | 11/25/1997 |
| 5499522 | Double-head pipe bending machine The pipe-bending machine comprises two bending heads (11,12) being configured so as to be mirror-inverted with respect to each other and projecting in cantilever-like manner from a machine frame (10). A cross slide (26) supporting the pipe holding device ... | 03/19/1996 |
| 5499521 | Tube bender apparatus Apparatus intended for bending heavy through thin wall pipe and tubing includes a generally circular bending shoe mounted for rotation about a first axis and having a plurality of semi-circular concave grooves in its outer surface. The grooves are of diff... | 03/19/1996 |
| 5463888 | Tube bending apparatus and method A heat exchanger is disclosed, which comprises: a plurality of tubes each having a U-shaped portion and arranged in a plurality of parallel bending planes, each bending plane containing a plurality of tubes of the same nominal outer diameter and of differing ... | 11/07/1995 |
| 5373719 | Device for generating bent portions in a pipe, particularly for generating a pipe coil A device for generating curved pipe portions (38, 40) bent alternately in opposite senses in a continuously supplied linear pipe (18), particularly for generating a pipe coil, comprises a machine table provided with two bending rolls (12, 13) having rotat... | 12/20/1994 |
| 5345803 | Adjustable tube bending method and apparatus Disclosed is an apparatus for producing smooth, continuous arcuate contour bends in tubes used, for example, in the manufacture of fuel manifolds for gas turbine engines. A flexible die cavity circumscribing an arbor member with an integral adjustment fea... | 09/13/1994 |
