Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 8171765 | Tube bending machine This invention is a manually operated tube bending machine with a power drive mechanism that is adjustably set to a desired bend speed. The bending machine includes a bending die, a counter die and a rotating hook die to form a desired bend into a tube or pipe. The ... | 05/08/2012 |
| 7980108 | Bending device for a tubular member A bending device for a tubular member includes a bending tool which is rotatable about an axis. The bending tool includes a circumferential recess and is split transversely to the axis to form a first tool member and a second tool member. Extending tangentially to t... | 07/19/2011 |
| 7743636 | 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 ... | 06/29/2010 |
| 7500372 | Bending machine with a controlled-return bending die A bending machine with a controlled-return bending die includes a matrix (2) mounted around a spindle (3) having an axis y, a bend arm (4) being able to turn around on the same axis y, and a vice (5) adapted to clamp a section of a workpi... | 03/10/2009 |
| 7444849 | Pipe bending apparatus The present invention of pipe-bending apparatus includes: a frame, a bending shoe having gear teeth and concave groove on its outer circumference, a drive-gear, a gear rack having gear teeth and concave groove on one surface and gear teeth only on opposite surface. ... | 11/04/2008 |
| 7404310 | Mandrel anchor for tube bending A mandrel assembly is provided for insertion into a hollow tube to support the interior walls of the tube during bending of the tube in a tube bending apparatus. The mandrel assembly includes at least one mandrel segment that is adapted for positioning within the tu... | 07/29/2008 |
| 7380430 | 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 ... | 06/03/2008 |
| 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 |
| 7325431 | Clamp assembly for bend arm of tube bending machine A clamping assembly for use with a bend arm of a tube bending machine. The assembly comprises a force multiplier linkage that applies a controlled and variable force to a workpiece. In one embodiment, the force multiplier linkage comprises a bearing member pivoted b... | 02/05/2008 |
| 7302823 | Gauge for pipe bending machine A pipe bending system employing a sensing and indicating system that provides feedback to an operator regarding the position of components of the pipe bending system, such as the pin-up shoe and the stiffback. Apparatus for retrofitting a sensing and indicating syst... | 12/04/2007 |
| 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 |
| 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 |
| 7269988 | 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... | 09/18/2007 |
| 7260969 | Bending machine for profiles and relative bending method Bending machine for profiles in the form of bars sheared to size, including at least a drawing assembly, shearing apparatus and bending apparatus. At least part of the drawing assembly is movable between a first loading position, wherein it is upstream of and remote... | 08/28/2007 |
| 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 |
| 7181947 | Bending machine with a compact bend arm A bending machine with a compact bend arm includes in a bend arm (4) being mounted on a rotating spindle (3) a cylinder which is fed with a pressured fluid through hoses (7) being part of a hydraulic circuit connected to a source of pressured fl... | 02/27/2007 |
| 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 |
| 7171834 | External sleeve assisted tube bending A method and apparatus for bending tubes particularly suited for bending thin-walled tubing into a tight radius bend. An external sleeve is used during the bending process which maintains the tube cross sectional area and tube wall thickness, thereby eliminating the... | 02/06/2007 |
| 7165962 | Web handling roll stand A telescoping roll stand for use in an extrusion line includes a linkage connecting one or more auxiliary rolls in a spatial relationship relative to each other and other auxiliary web processing components, including conveyors, load cell rolls, draw rolls, and othe... | 01/23/2007 |
| 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 |
| 7150175 | Clamp assembly for bend arm of tube bending machine A clamping assembly for use with a bend arm of a tube bending machine. The assembly comprises a force multiplier linkage that applies a controlled and variable force to a workpiece. In one embodiment, the force multiplier linkage comprises a bearing member pivoted b... | 12/19/2006 |
| 7143629 | Manual pipe bender The manual pipe bender has a stationary handle, a head, a bending die, a bending lever, and a bending handle. The stationary handle has a distal end, and the head is attached to the stationary handle. The bending die has a bending surface and multiple ratchet teeth.... | 12/05/2006 |
| 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 |
| 7134310 | Tube bender A tube bender includes a worktable, a rail on the worktable, a tube-pushing device and a tube-bending device. The tube-pushing device is positioned on the worktable, having a moving base and a clamper at one side of the moving device. The clamper clamps a tube being... | 11/14/2006 |
| 7131309 | Bending system A bending system comprising a series of bending stations, each equipped with a bending head. Workpieces are conveyed from one bending station to the next by grippers suspended from a two-axis gantry, that preferably grasp the workpiece at an intermediate portion. Ea... | 11/07/2006 |
| 7131313 | Bending method and mandrel of multi-layered pipe A method where an inside mandrel is inserted into the inner pipe of the multi-layered pipe, a tubular outside mandrel is inserted into the annular space between the inner pipe and outer pipe, the multi-layered pipe is clamped to a bending die by a clamping die, the ... | 11/07/2006 |
| 7131306 | Bending machine die provided with a vise for clamping an elongated workpiece to be bent A vise for clamping an elongated workpiece to be bent on a die (2) of a bending machine includes a movable jaw (35), provided with a clamping portion (51) approachable to and removable from the circumferential groove (4) of the die (2 | 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 |
| 7100414 | Adjustable cam assembly for mounting a pressure die to a pipe bending machine A cam assembly for mounting a pressure die to the arm of a standard pipe bending machine. The assembly comprises a base with a pivot post extending upwardly therefrom. A cam shaft has an off-center opening adapted to receive the pivot post. A pivot assembly is combi... | 09/05/2006 |
| 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 |
| 7065999 | Bending roll apparatus This invention provides a bending roll apparatus capable of preventing barrel-like deformation of a pipe occurring during a roll bending work and of manufacturing a small diameter elongated pipe. In an apparatus for manufacturing a pipe by pushing rolls to a core ro... | 06/27/2006 |
| 7040133 | Transmission device for a tube bending machine A transmission device for a tube bending machine include a first power means and a second power means mounted on the sliding seat to drive the sliding seat as well as a workpiece securely connected to the sliding seat to move. The second means has a second motor alt... | 05/09/2006 |
| 7028521 | Pipe feeding mechanism of an automatic pipe bender A pipe feeding mechanism includes a rack, a power source, first and second planetary gears, a clutch for releaseably securing an output shaft to an input shaft in the first planetary gear, and a brake for releaseably blocking rotation of a sun gear of the first plan... | 04/18/2006 |
| 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 |
