US20090266137A1 - Tool for Pipe Bending and Former for Use in Such a Tool - Google Patents

Tool for Pipe Bending and Former for Use in Such a Tool Download PDF

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Publication number
US20090266137A1
US20090266137A1 US12/447,226 US44722607A US2009266137A1 US 20090266137 A1 US20090266137 A1 US 20090266137A1 US 44722607 A US44722607 A US 44722607A US 2009266137 A1 US2009266137 A1 US 2009266137A1
Authority
US
United States
Prior art keywords
pipe
tool
substancially
bending
former
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/447,226
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English (en)
Inventor
Marten Andren
Olle Bobjer
Hans Himbert
Stefan Strandberg
Mattias Lovemark
Conny Jansson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kapman AB
Original Assignee
Kapman AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kapman AB filed Critical Kapman AB
Assigned to KAPMAN AB reassignment KAPMAN AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANDREN, MARTEN, STRANDBERG, STEFAN, HIMBERT, HANS, LOVEMARK, MATTIAS, JANSSON, CONNY, BOBJER, OLLE
Publication of US20090266137A1 publication Critical patent/US20090266137A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • B21D7/063—Pliers with forming dies

Definitions

  • the present invention relates to a tool for pipe bending comprising at least two branches, intended to be gripped and pressed together by an operator upon pipe bending, at least one link arm, at least one former, and at least one sliding jaw, said at least one former and said at least one sliding jaw being intended to be placed on either side of a pipe to be bent, and said at least one former being fitted to, or constituting a part of, a first branch of said at least two branches at the same time as said at least one sliding jaw being fitted to, or constituting a part of, a second branch of said at least two branches.
  • EP, B1, 0 014 461 shows a bending device for metal pipes.
  • a cylinder segment 10 having a groove 11 and a shaft 14 works as a bending former around which a metal pipe can be bent. No pipe-positioning index is found on the former.
  • a first object of the present invention is to provide a tool for pipe bending that is easier to use than known tools of the corresponding type.
  • a second object is to provide a tool for pipe bending that makes it possible to work with greater precision than what is possible with known tools of the corresponding type.
  • a third object is to provide a tool for pipe bending that comprises a former that has a pipe-positioning index.
  • a fourth object is to provide a former that has a pipe-positioning index.
  • the invention embraces a tool for pipe bending comprising at least two branches, intended to be gripped and pressed together by an operator upon pipe bending, at least one link arm, at least one former, and at least one sliding jaw, said at least one former and said at least one sliding jaw being intended to be placed on either side of a pipe to be bent, and said at least one former being fitted to, or constituting a part of, a first branch of said at least two branches at the same time as said at least one sliding jaw being fitted to, or constituting a part of, a second branch of said at least two branches.
  • At least one of said at least one former has at least one pipe-positioning index, one of which is intended to be placed as close as possible to a corresponding bending-measure index on the pipe when the pipe is placed in the tool in order to be bent.
  • the substancially perpendicular distance, before bending, between, on one hand, a plane through said pipe-positioning index as well as through said bending-measure index and simultaneously substancially perpendicular to the substancial direction of extension of the pipe and, on the other hand, a first end of the pipe may be substancially equal to the substancially perpendicular distance, after bending, between, on one hand, a plane substancially coincident with a substancially straight centre line in a first part of the pipe and simultaneously substancially perpendicular to the substancial direction of extension of a second part of the pipe and, on the other hand, said first end of the pipe.
  • the substancially perpendicular distance, before bending, between, on one hand, a plane through said pipe-positioning index as well as through said bending-measure index and simultaneously substancially perpendicular to the substancial direction of extension of the pipe and, on the other hand, a second end of the pipe may be substancially equal to the substancially perpendicular distance, after bending, between, on one hand, a plane substancially coincident with a substancially straight centre line in a second part of the pipe and simultaneously substancially perpendicular to the substancial direction of extension of a first part of the pipe and, on the other hand, said second end of the pipe.
  • Said at least one former may have at least one start index.
  • Said at least one start index may be a part of at least one scale graduated in angular degrees.
  • Said former may have at least one finely graduated overbending index.
  • Said at least one overbending index may correspond to a pipe bending of approx. 91-93°, preferably approx. 93°.
  • Said at least one sliding jaw may have at least one start index.
  • Said at least one sliding jaw may have at least one pipe-positioning index.
  • Said first branch may have at least one holder-on for pipes that are being bent.
  • Said first branch may have at least one part protruding from the tool and respectively provided with at least two basically plane-parallel sides suitable for vice attachment.
  • Said at least one former may have the shape of a modified cylinder segment, the periphery of which has at least one groove for the receipt of said pipe to be bent, and the centre of which has at least a first shaft having a direction of extension that is substancially perpendicular to a substancial plane of extension of said modified cylinder segment.
  • Said at least one groove may extend alongside said periphery along at least one semicircle in a substancial plane of extension of said modified cylinder segment.
  • Said at least one first shaft may, in at least one corresponding first mounting, pivotably unite said at least one former and said at least one link arm.
  • At least one second shaft may, in at least one corresponding second mounting, pivotably unite said at least one link arm and said second branch.
  • Said at least one former may, in a part that is situated between said at least one groove and said at least one first shaft, have at least one clearance in the form of at least one through hole.
  • Said at least two branches may be curved in the ends thereof being most distant from said at least one former. Said at least two branches may be curved in different directions. Said at least two branches may be curved inwards towards each other. At least one of said at least two branches may have at least one transport locking device in the form of at least one strap that forms at least one loop.
  • the invention also embraces a former for use as a part of a tool for pipe bending, said tool, in addition to at least one former, comprising at least two branches, intended to be gripped and pressed together by an operator upon pipe bending, at least one link arm, and at least one sliding jaw, said at least one former and said at least one sliding jaw being intended to be placed on either side of a pipe to be bent, and said at least one former being fitted to, or constituting a part of, a first branch of said at least two branches at the same time as said at least one sliding jaw being fitted to, or constituting a part of, a second branch of said at least two branches.
  • the former has at least one pipe-positioning index, one of which is intended to be placed as close as possible to a corresponding bending-measure index on the pipe when the pipe is placed in the tool in order to be bent.
  • the substancially perpendicular distance, before bending, between, on one hand, a plane through said pipe-positioning index as well as through said bending-measure index and simultaneously substancially perpendicular to the substancial direction of extension of the pipe and, on the other hand, a first end of the pipe may be substancially equal to the substancially perpendicular distance, after bending, between, on one hand, a plane substancially coincident with a substancially straight centre line in a first part of the pipe and simultaneously substancially perpendicular to the substancial direction of extension of a second part of the pipe and, on the other hand, said first end of the pipe.
  • the substancially perpendicular distance, before bending, between, on one hand, a plane through said pipe-positioning index as well as through said bending-measure index and simultaneously substancially perpendicular to the substancial direction of extension of the pipe and, on the other hand, a second end of the pipe may be substancially equal to the substancially perpendicular distance, after bending, between, on one hand, a plane substancially coincident with a substancially straight centre line in a second part of the pipe and simultaneously substancially perpendicular to the substancial direction of extension of a first part of the pipe and, on the other hand, said second end of the pipe.
  • the former may have at least one start index.
  • Said at least one start index may be a part of at least one scale graduated in angular degrees.
  • the former may have at least one finely graduated overbending index.
  • Said at least one overbending index may correspond to a pipe bending of approx. 91-93°, preferably approx. 93°.
  • FIG. 1 shows, in a perspective view, a tool for pipe bending according to the invention.
  • FIG. 2 shows, in a view straight from above, the tool of FIG. 1 .
  • FIG. 3 shows, in a side view from the left, the tool of FIG. 1 .
  • FIG. 4 shows, in a side view from the right, the tool of FIG. 1 .
  • FIG. 5 shows, in a view straight from below, the tool of FIG. 1 .
  • FIG. 6 shows, in a view straight from above, a part of the tool of FIG. 1 with a pipe before bending.
  • FIG. 7 shows, in a view straight from above, a part of the tool of FIG. 1 with a pipe after bending.
  • a first branch 1 having a handle part 2 and a second branch 3 having a handle part 4 are intended to be gripped by an operator.
  • the first branch 1 shows, in the end being most distant from the operator, an holder-on 5 , a part 6 for vice attachment, and a former 7 .
  • the second branch 3 shows, in the end being most distant from the operator, a link arm 8 and a sliding jaw 9 .
  • a first shaft 10 in a corresponding first mounting in the former 7 and/or the link arm 8 pivotably unites the former 7 and the link arm 8 .
  • a second shaft 11 in a corresponding second mounting in the link arm 8 and/or the second branch 3 pivotably unites the link arm 8 and the second branch 3 .
  • the presence of the shafts 10 , 11 means that the first branch 1 is pivotably united to the second branch 3 and that the tool can be maneuvered by an operator having a branch 1 , 3 in each hand.
  • the branches 1 , 3 are substancially straight except in the handle parts 2 , 4 where they, in the ends thereof being closest to the operator, are bent inwards towards each other. This means that the tool is more comfortable to handle in the open state, when the handle parts 2 , 4 are far from each other, than the tool would be if the handle parts 2 , 4 were straight.
  • the branches 1 , 3 are made of pipes of metal, such as steel or the like, and the pipes also extend substancially through the handle parts 2 , 4 but the surface layer of the handle parts 2 , 4 consists of a substancially soft elastomer or the like.
  • each one of said pipes instead extends through only a part of the corresponding handle part 2 , 4 or not at all extends through the corresponding handle part 2 , 4 .
  • the two pipes may also be differently long and extend differently far through the respective corresponding handle part, the elastomer or another suitable material making up so that the branches 1 , 3 become substancially equally long.
  • a transport locking device 2 a in the form of a strap that forms at least one loop. If the loop is threaded over the second handle part 4 , the handle parts 2 , 4 and thereby also the branches 1 , 3 are kept well together during transportation of the tool.
  • the strap of the transport locking device is deflectable and flexible and manufactured from elastic textile, rubber or the like.
  • the holder-on 5 has a curved hook-like shape, see particularly FIGS. 3 and 4 , to be able to retain a pipe 12 in connection with a bending operation.
  • bending the same as bending (“böjning”) is here meant and as a result of the operation, a pipe bend is obtained.
  • the part 6 for vice attachment protrudes from the tool and is provided with two substancially plane-parallel sides 13 , 14 suitable for vice attachment.
  • the former 7 has the shape of a modified cylinder segment, the periphery of which has a groove 15 for the receipt of said pipe 12 to be bent.
  • the groove 15 extends alongside said periphery along at least a semicircle in a substancial plane of extension of said modified cylinder segment, which plane of extension is parallel to the plane of the paper in the FIGS. 2 and 5 - 7 .
  • This semicircle shows a first radius corresponding to the perpendicular distance between the bottom of the groove 15 and the centre of the shaft 10 , which first radius should be chosen in view of the dimension of the pipe 12 to be bent, the radius being chosen to be approx. 37-47 mm, preferably approx. 42 mm for pipe dimension 12 , and approx.
  • said first radius should be smaller than or possibly equal to four times the diameter of the pipe 12 . Said first radius corresponds directly to the resulting bending radius of the pipe 12 .
  • the groove 15 shows, in a section perpendicular to the substancial length extension thereof, a substancially semicircular shape having a second radius that should correspond to the cross-sectional radius of the pipe 12 and that accordingly also should be chosen in view of the dimension of the pipe 12 to be bent.
  • the entire former 7 is easily replaceable on the tool, and therefore a former having suitable measures of occurring radii can be used for each one of the normally occurring pipe dimensions.
  • the former 7 is fitted to the branch 1 by means of a screw, a pin on the branch 1 simultaneously meeting a corresponding hole in the former 7 to prevent the former 7 from rotating around the screw when the tool is used.
  • the described arrangement is only an example and the corresponding functions may be obtained in any other known way.
  • the web part of the former 7 i.e., the part between the groove 15 and the first shaft 10 , is, in comparison with surrounding parts, thin and furthermore broken up with a plurality of through holes 16 of varying shapes.
  • the former 7 is provided with a scale 17 graduated in angular degrees from 0° to 180°, the degree values of 0, 45, 90, 135 and 180 having been marked particularly by the fact that not only scale lines are present for said degree values but also by the fact that the degree values are written numerically. Scale lines and numerals are recessed in the surface of the scale 17 and marked with a colour deviating from the rest of the surface.
  • a pipe-positioning index 18 and a pipe-positioning index 19 are present, which are located along an imaginary, basically straight, line starting from an imaginary extension of the marking for 0° on the scale 17 , the pipe-positioning index 18 being located closer than the pipe-positioning index 19 to the marking for 0° on the scale 17 , and said line extending substancially parallel to each pipe piece 12 properly placed in the tool in order to be bent.
  • the former 7 also shows five particular overbending indexes 20 .
  • an extra handle part/thumb-grip part may be present on the former 7 .
  • the sliding jaw 9 is attached to the second branch 3 by two pins 21 of a suitable type, e.g., tension pins 21 .
  • the sliding jaw 9 is made of polymer material or the like and provided with a start index 22 and two pipe-positioning indexes 23 , 24 .
  • the sliding jaw 9 shows a groove 25 for the receipt of said pipe 12 to be bent.
  • the groove 25 extends along the entire length of the sliding jaw 9 and shows, in a section perpendicular to the substancial length extension thereof, a substancially semicircular shape having a third radius that should correspond to the cross-section radius of the pipe 12 and that accordingly also should be chosen in view of the dimension of the pipe 12 to be bent. It may also be a modified semicircular shape.
  • the sliding jaw 9 is also easily replaceable on the tool, and therefore a sliding jaw having a suitable measure of occurring radius can be used for each one of the normally occurring pipe dimensions.
  • the holder-on 5 , the part 6 for vice attachment, the link arm 8 and the end of the second branch 3 , closest to the shaft 11 are manufactured from forged steel or the like.
  • the shafts 10 , 11 are manufactured from steel or the like and the former 7 is manufactured from aluminium or the like.
  • the materials mentioned in this description are without exception to be seen as examples.
  • the branches 1 , 3 may, in addition to steel, be made of a number of alternative known materials, such as, for instance, another metal, light metal, composite and/or plastic, and the same applies to the holder-on 5 , the part 6 for vice attachment, the link arm 8 and the shafts 10 , 11 .
  • the former 7 may, in addition to aluminium, be made of a number of alternative known materials, such as, for instance, another light metal, metal, composite and/or plastic.
  • the sliding jaw 9 may, in addition to polymer material, be made of a number of alternative known materials, such as, for instance, metal, ceramic and/or composite.
  • the pipe 12 suitably in the form of a pipe piece 12 having an index for a bending measure of the pipe bend intended to be produced, is placed in the tool in such a way that the pipe 12 will rest in the groove 15 and simultaneously be positioned in the holder-on 5 in the hook-shaped end part thereof.
  • Said bending measure constitutes, for the pipe bend intended to be produced and as for a bending of approx.
  • a plane substancially coincident with a substancially straight centre line here is meant a plane that intersects the centre line and simultaneously extends substancially parallel to the same, i.e., the centre line lies entirely in the plane.
  • centre line here is meant a line that interconnects the circle centres in each cross-section of the pipe 12 . If said bending measure has been given starting from the left of the pipe piece 12 , when the operator holds the same in front of him basically horizontally, said bending-measure index is placed right opposite said pipe-positioning index 19 of the former 7 . However, if said bending measure has been given starting from the right of the pipe piece 12 , said bending-measure index is placed right opposite said pipe-positioning index 18 of the former 7 .
  • overbending indexes 20 will be useful, which mark overbending by 3, 6, 9, 12 and 15° over 90° respectively.
  • the operator knows the material of the pipe 12 well and the properties thereof upon bending and, for instance, knows that an overbending to 93° gives a completed bend of 90°, he continues to bring the branches 1 , 3 together until the start index 22 on the sliding jaw 9 reaches up to a position where it is right opposite the first overbending index 20 as counted from the marking for 90° on the scale 17 .
  • FIG. 7 an overbending to 96° is shown. After completed bending, the operator opens the tool by spacing apart the handle parts 2 , 4 from each other, and then the completed pipe bend can be lifted away.
  • overbending indexes at other angular degree values on the scale 17 than the ones given here, for instance, at approx. 3 and/or approx. 6 and/or approx. 9 and/or approx. 12 and/or approx. 15° over 45° for the production of bends having bending angles of this size or over any other degree value.
  • Said angular degree values are the ones preferred, but overbending indexes in the intervals of approx. 1-3 and/or approx. 4-6 and/or approx. 7-9 and/or approx. 10-12 and/or approx. 13-15° over 45°, or over any other degree value, are also possible.
  • the tool according to the invention shows, among other things, the following advantages.
  • the handle parts 2 , 4 are patterned and made with large diameter and bent shape to afford the operator a good grip.
  • the branches 1 , 3 are longer than usual, so that less force than usual should be needed upon bending. Occurring start and pipe-positioning indexes on the former 7 and the sliding jaw 9 and a large opening between the former 7 and the holder-on 5 makes it easy to quickly place the pipe 12 to be bent in the proper position.
  • the sliding jaw 9 is of polymer material, the pipe 12 is not scratched upon bending.
  • the scale 17 is easily read since the markings and the numerals are clearly made, recessed and have a deviating colour, and the same applies to occurring start, pipe-positioning and overbending indexes on the former 7 and the sliding jaw 9 .
  • the special part 6 for vice attachment means a simple mounting in this way.
  • the particular transport locking device 2 a facilitates transportation and storing of the tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
US12/447,226 2006-10-26 2007-10-24 Tool for Pipe Bending and Former for Use in Such a Tool Abandoned US20090266137A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0602255-2 2006-10-26
SE0602255 2006-10-26
PCT/SE2007/050776 WO2008051162A1 (en) 2006-10-26 2007-10-24 Tool for pipe bending and former for use in such a tool

Publications (1)

Publication Number Publication Date
US20090266137A1 true US20090266137A1 (en) 2009-10-29

Family

ID=39324862

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/447,226 Abandoned US20090266137A1 (en) 2006-10-26 2007-10-24 Tool for Pipe Bending and Former for Use in Such a Tool

Country Status (5)

Country Link
US (1) US20090266137A1 (un)
EP (1) EP2076340A4 (un)
CN (1) CN101528375B (un)
NO (1) NO20090869L (un)
WO (1) WO2008051162A1 (un)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2759351A1 (en) * 2013-01-25 2014-07-30 Irwin Industrial Tool Company Tube lever bender and related method of use
RU199773U1 (ru) * 2020-05-14 2020-09-21 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" Трубогиб с устройствами для измерения углов
US11583322B2 (en) 2021-02-09 2023-02-21 Warsaw Orthopedic, Inc. Dual-sided rod bender

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2014431B1 (en) * 2015-03-10 2016-10-13 Arie Hogerwerf Pieter Device for bending pipes.

Citations (18)

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US2436776A (en) * 1944-03-17 1948-02-24 Goodyear Aircraft Corp Reversible tube bender with side angle indicator
US2757562A (en) * 1953-05-01 1956-08-07 Imp Brass Mfg Co Portable, hand operated, tube bending tool
US2852063A (en) * 1956-03-09 1958-09-16 Parker Hannifin Corp Tube bender with self-tightening tube clamp
US3448602A (en) * 1965-10-24 1969-06-10 Parker Hannifin Corp Hand held tube bender
US3685335A (en) * 1970-11-05 1972-08-22 Imp Eastman Corp Tube bender
US3926028A (en) * 1974-08-23 1975-12-16 Imp Eastman Corp Tube bender
US4355528A (en) * 1979-02-09 1982-10-26 Rothenberger Gmbh & Co. Device for bending metal pipe
US4380922A (en) * 1981-01-30 1983-04-26 Imperial Clevite Inc. Tube bender construction
US4403496A (en) * 1981-01-30 1983-09-13 Imperial Clevite Inc. Tube bender construction
US4593933A (en) * 1983-03-11 1986-06-10 Nunno Louis E Ski pole wrist strap and seat assembly
US5275031A (en) * 1992-06-05 1994-01-04 Stark Manufacturing, Inc. Bend correction apparatus and method
US5927141A (en) * 1998-04-02 1999-07-27 Applied Power Inc. Conduit bender head
US6385856B1 (en) * 1999-05-24 2002-05-14 Jeffrey L. Godin Pipe-bending alignment device
US6463780B1 (en) * 2001-10-08 2002-10-15 Stride Tool, Inc. Tube bender and process
US6912886B1 (en) * 2004-03-24 2005-07-05 Amaesing Tools Manufacturing, Inc. Bending apparatus for pipe and tubing
US7143629B1 (en) * 2005-12-14 2006-12-05 Ching-Su Chiu Manual pipe bender
US7383716B2 (en) * 2002-10-15 2008-06-10 Stride Tool Inc. Tube bender and method of using same
US7886565B2 (en) * 2005-01-11 2011-02-15 Johann Niedermeier Bending apparatus for long workpieces, especially tubes, and a device for measuring length of a bending

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US3194038A (en) * 1962-03-21 1965-07-13 Ridge Tool Co Tube bender
US4379400A (en) * 1981-01-30 1983-04-12 Imperial Clevite Inc. Tube bender construction
CN2277859Y (zh) * 1996-05-29 1998-04-08 李化龙 多用弯管钳

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436776A (en) * 1944-03-17 1948-02-24 Goodyear Aircraft Corp Reversible tube bender with side angle indicator
US2757562A (en) * 1953-05-01 1956-08-07 Imp Brass Mfg Co Portable, hand operated, tube bending tool
US2852063A (en) * 1956-03-09 1958-09-16 Parker Hannifin Corp Tube bender with self-tightening tube clamp
US3448602A (en) * 1965-10-24 1969-06-10 Parker Hannifin Corp Hand held tube bender
US3685335A (en) * 1970-11-05 1972-08-22 Imp Eastman Corp Tube bender
US3926028A (en) * 1974-08-23 1975-12-16 Imp Eastman Corp Tube bender
US4355528A (en) * 1979-02-09 1982-10-26 Rothenberger Gmbh & Co. Device for bending metal pipe
US4403496A (en) * 1981-01-30 1983-09-13 Imperial Clevite Inc. Tube bender construction
US4380922A (en) * 1981-01-30 1983-04-26 Imperial Clevite Inc. Tube bender construction
US4593933A (en) * 1983-03-11 1986-06-10 Nunno Louis E Ski pole wrist strap and seat assembly
US5275031A (en) * 1992-06-05 1994-01-04 Stark Manufacturing, Inc. Bend correction apparatus and method
US5927141A (en) * 1998-04-02 1999-07-27 Applied Power Inc. Conduit bender head
US6385856B1 (en) * 1999-05-24 2002-05-14 Jeffrey L. Godin Pipe-bending alignment device
US6463780B1 (en) * 2001-10-08 2002-10-15 Stride Tool, Inc. Tube bender and process
US7383716B2 (en) * 2002-10-15 2008-06-10 Stride Tool Inc. Tube bender and method of using same
US6912886B1 (en) * 2004-03-24 2005-07-05 Amaesing Tools Manufacturing, Inc. Bending apparatus for pipe and tubing
US7886565B2 (en) * 2005-01-11 2011-02-15 Johann Niedermeier Bending apparatus for long workpieces, especially tubes, and a device for measuring length of a bending
US7143629B1 (en) * 2005-12-14 2006-12-05 Ching-Su Chiu Manual pipe bender

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2759351A1 (en) * 2013-01-25 2014-07-30 Irwin Industrial Tool Company Tube lever bender and related method of use
US9156075B2 (en) 2013-01-25 2015-10-13 Irwin Industrial Tool Company Lever bender and related method of use
RU199773U1 (ru) * 2020-05-14 2020-09-21 Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" Трубогиб с устройствами для измерения углов
US11583322B2 (en) 2021-02-09 2023-02-21 Warsaw Orthopedic, Inc. Dual-sided rod bender

Also Published As

Publication number Publication date
CN101528375B (zh) 2011-06-08
NO20090869L (no) 2009-07-21
CN101528375A (zh) 2009-09-09
EP2076340A1 (en) 2009-07-08
EP2076340A4 (en) 2010-06-23
WO2008051162A1 (en) 2008-05-02

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