US3190105A - Tube bender - Google Patents

Tube bender Download PDF

Info

Publication number
US3190105A
US3190105A US196102A US19610262A US3190105A US 3190105 A US3190105 A US 3190105A US 196102 A US196102 A US 196102A US 19610262 A US19610262 A US 19610262A US 3190105 A US3190105 A US 3190105A
Authority
US
United States
Prior art keywords
tube
shoe
link
mandrel
shoulder
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.)
Expired - Lifetime
Application number
US196102A
Inventor
Richard V Strybel
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.)
Clevite Industries Inc
IMP Eastman Corp
Original Assignee
IMP Eastman Corp
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 IMP Eastman Corp filed Critical IMP Eastman Corp
Priority to US196102A priority Critical patent/US3190105A/en
Application granted granted Critical
Publication of US3190105A publication Critical patent/US3190105A/en
Assigned to IMPERIAL CLEVITE INC. reassignment IMPERIAL CLEVITE INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: I-T-E IMPERIAL CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/06Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • B21D7/063Pliers with forming dies

Definitions

  • This invention relates to;tubeibend ers and in particular to manually operable tube benders.
  • a shoe element is pivotally connected to a mandrel to move along a peripheral groove in the mandrel and in so moving press a tube into the groove to efiect a desired bend therein.
  • a first'handle is secured to the mandrel and a second handle is secured to the shoe, permitting the user, by suitable manipulation of the handles, to the between the shoe and the mandrel- In the starting'position, it is desirable to have the two handles extend generally perpendicular to each other to permit maximum effort to be exerted by the user. disadvantage of causing the handles to cross where the bend is continued beyond 90?.
  • the present invention comprehends an improved arrangement of the tube bender1 structure whereby the crossing of the handles is effectively eliminated.
  • a principal object of the present invention is the provision of a new and improved tube bender.
  • Another object of the invention isthe provision. of such a tube bender having new and improved means for associating the shoe with the mandrel to permit selective positioningof the shoe in tube bendingassociation with the mandrel with the shoe handle being disposed in either of two substantially perpendiculararrangements.
  • a further object of the invention is to provision of the shoe may effect the desired relative movement.
  • a link having an inner end pivotally carried by the mandrel, the link having an outer end provided with a first shoulder, and the shoe being provided with a pair of shoulders for selective engagement with the link shoulder for releasably retaining theshoe in either of two preselected positions.
  • FIG. 1 is a fragmentary elevation of 'a tube bender embodying the invention with the shoe illustrated in full lines as at the start of a tube bending operation and in dashed lines as upon completion of a 90 bend in the v tube;
  • FIG. 2 is a section taken substantially along the line 2-2 of FIG. 1;
  • FIG. 3 is a side view the top of FIG. 1;
  • FIG. 4 is a fragmentary elevation of the tubebender with the shoe shown in full lines as repositioned to commence an additional 90 bending operation in dot-dashed lines as during such repositioning, and in dashed lines as upon completion of a 180 bend.
  • a tube bender generally designated 10 is shown to include a conventional mandrel 11 having a peripheral tube bending groove 12 extending annularly concentrically of an axis 13 through the center of the mandrel.
  • a first handle 14 is secured to the mandrel as by screws 15 and a conventionalhook 16 is secured to of the tube bender looking from detailed description taken in connecto thelaxis l3 and: the shoulder figure to complete the awaits is. arranged in the conventional manner to engage a por bend in the tube bender and ing operation.
  • tube bender further includes a bending .shoe 18 to which is secured a second handle shoe is connected to the mandrel by a link 2(lhaving an inner end 21 connected to the mandrel by a pivot 22 permitting the link in FIGS. 1 and 4.
  • the outer end 23 of the link 20 is propost 24 extending through an elongated slot 25 in the shoe 18 to pivotally connect the shoe to the link.
  • the shoe 18.. may be selectively retained on the link 20 in either of two generally perpendicularly related positions.
  • the link is provided with a projection 26 defining a shoulder 27.
  • the projection extends from' the end 21 of the link.
  • Shoe 18 is provided'with afirst tubeengagingsurface 28 defined by a rectilinear groove, and
  • groove-28 extends generally parallel to the direction of elongation of'slot 25 and groove 29 extends perpendicular thereto.
  • the shoe 18 is provided with a pair of shoulders 30 and 31 for selective engagement with the shoulder 27 of the link 20 to retain the shoe selectively in the position of FIG-1 (full lines) and' the position; of FIG. 4 (full lines). More specifically, shoulder 30 is defined by a notch 32 in the portion of the shoe defining groove 29 and shoulder 31 is defined by a notch 33 in the portion of the shoe opposite the portion defining groove:
  • the shoe is repositioned as shown in FIG. 4 so as to bring handle 1% back to a position wherein it extends substantially perpendicularly to the handle 14 permitting an additional bend to be formed in the tube T as shown in FIG. 4 without a crossing of the handles.
  • the repositioning of the shoe is effected by simply pivoting the shoe from the position shown in dashed lines in FIG. 1 to the position shown in dot-dash lines in FIG.
  • Handle 19 may then be manipulated to swing the shoe on link 29 from the full line position of FIG. 4 to the dashed line position at the bottom of the bend in the tube T.
  • the shoe may-be readilyreleas'ed from the tube at the90 position by simply pivoting the shoe in a counterclockwise direction about the spaced from the tube in the 180 position by pivoting the shoe slightly in a' counterclockwise direction to disengage .
  • the shoulder 31 from the link shoulder 27 and permit the "shoe to be slid outwardly along the link 20 away from the gular so as to be received in the recesses in the two difierent tube-bending positions of the Patented June 22, 1965 19.
  • the bending to sewing about theaxis 13 as shown link generally parallel faces toward the inner 4 and thensliding post 24 and may be readily.
  • tube bender'10 provides a strong maintenance-free facilitated selected positioning of ee shoe so that the user may effect 'a full180, bend v f the tube by manipulation of the two handles through the ame 790 quadrant, effectively eliminating the 'need'for J crossing of the handles at any time.
  • an elongated handle secured to the means for retaining a tube in associationmandrel, and V with the mandrel groove, means for bending the tube into the groove comprisingia connector link having an inner end and an outer end; means connecting-the inner end of the link to said mandr'elto pivot, about 'sai'daxis;
  • gaging surfaces are defined intersecting rectilinearf grooves in the shoe; 7 I
  • an elongated handle secured to the mandrel, and means for retaining a tube in associationai' with the 'mandrelfgroove, means forbending the tube into a bending shoe having a first tube-engaging surface and a V I facing a second shoulder of said shoe extending parallel to said first tube-engaging surface, saidsecond shoulder engaging said first shoulder when said'shoe is link to the first position wherein said first tube-engagin'g anda third parallel to said second f tube-engaging-surface, said third shoulder engaging said first shoulder when said'shoe is pivoted on theflink to surface is juxtaposed to said mandrel groove;

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Description

June 22, 1965 R. v. STRYBEL TUBE BENDER Filed May 21, 1962 .N IHHHHJI: r...
a zE fiz M Mara;
BY fg w,
90 bend so. as to reposition the TUTSE BENDER' Richard V. Strybel, Elk Grove Village, 121., assignor t Imperial-Eastman Corporatiorn'a corporation of Illinois Filed May 21, 1962, ScL'No. 196,102 7 Claims. (Ql. 72-459) w I This invention relates to;tubeibend ers and in particular to manually operable tube benders.
In one well-known form of manually operable, tube bender, a shoe element is pivotally connected to a mandrel to move along a peripheral groove in the mandrel and in so moving press a tube into the groove to efiect a desired bend therein. Conventionally, a first'handle is secured to the mandrel and a second handle is secured to the shoe, permitting the user, by suitable manipulation of the handles, to the between the shoe and the mandrel- In the starting'position, it is desirable to have the two handles extend generally perpendicular to each other to permit maximum effort to be exerted by the user. disadvantage of causing the handles to cross where the bend is continued beyond 90?. 'The present invention. comprehends an improved arrangement of the tube bender1 structure whereby the crossing of the handles is effectively eliminated. J
Thus, a principal object of the present invention is the provision of a new and improved tube bender.
Another object of the invention isthe provision. of such a tube bender having new and improved means for associating the shoe with the mandrel to permit selective positioningof the shoe in tube bendingassociation with the mandrel with the shoe handle being disposed in either of two substantially perpendiculararrangements. Thus, 135
be repositioned upon the completion of a shoe handle in a direction away from the mandrel handle to permit a subsequent additional 90 bend in the tube without a crossing of the shoe and mandrel handles. v V
A further object of the invention is to provision of the shoe may effect the desired relative movement.
' This, however, has the tion of the tube T to be retain the tube against movement during the tube-bend:
' vided with a pivot such a tube bender wherein the shoe is connected to the,
mandrel by a link having an inner end pivotally carried by the mandrel, the link having an outer end provided with a first shoulder, and the shoe being provided with a pair of shoulders for selective engagement with the link shoulder for releasably retaining theshoe in either of two preselected positions.
Other features and advantages will become apparent from the following tion with the accompanying drawings wherein:
FIG. 1 is a fragmentary elevation of 'a tube bender embodying the invention with the shoe illustrated in full lines as at the start of a tube bending operation and in dashed lines as upon completion of a 90 bend in the v tube;
FIG. 2 is a section taken substantially along the line 2-2 of FIG. 1;
FIG. 3 is a side view the top of FIG. 1; and
FIG. 4 is a fragmentary elevation of the tubebender with the shoe shown in full lines as repositioned to commence an additional 90 bending operation in dot-dashed lines as during such repositioning, and in dashed lines as upon completion of a 180 bend.
In the exemplary embodiment of the invention as disclosed in the draw g, a tube bender generally designated 10 is shown to include a conventional mandrel 11 having a peripheral tube bending groove 12 extending annularly concentrically of an axis 13 through the center of the mandrel. A first handle 14 is secured to the mandrel as by screws 15 and a conventionalhook 16 is secured to of the tube bender looking from detailed description taken in connecto thelaxis l3 and: the shoulder figure to complete the awaits is. arranged in the conventional manner to engage a por bend in the tube bender and ing operation. The. tube bender further includes a bending .shoe 18 to which is secured a second handle shoe is connected to the mandrel by a link 2(lhaving an inner end 21 connected to the mandrel by a pivot 22 permitting the link in FIGS. 1 and 4. The outer end 23 of the link 20 is propost 24 extending through an elongated slot 25 in the shoe 18 to pivotally connect the shoe to the link. a
As indicated briefly above, the shoe 18..may be selectively retained on the link 20 in either of two generally perpendicularly related positions. To this end the link is provided with a projection 26 defining a shoulder 27. The projection extends from' the end 21 of the link. Shoe 18 is provided'with afirst tubeengagingsurface 28 defined by a rectilinear groove, and
ag second tube-engaging surface 29 defined by a second rectilinear groove perpendicularly intersecting the first groove 28. As best seen in FIG. 1, groove-28 extends generally parallel to the direction of elongation of'slot 25 and groove 29 extends perpendicular thereto.
As shown in FIG/l, the shoe 18 is provided with a pair of shoulders 30 and 31 for selective engagement with the shoulder 27 of the link 20 to retain the shoe selectively in the position of FIG-1 (full lines) and' the position; of FIG. 4 (full lines). More specifically, shoulder 30 is defined by a notch 32 in the portion of the shoe defining groove 29 and shoulder 31 is defined by a notch 33 in the portion of the shoe opposite the portion defining groove:
Ascan be seen from the dotted lineposition ofhandle 19 in" FIG. 1, further movement thereof in a clockwise direction about the axis 13 would tend to cause the handle 19 to cross the handle 14. To preclude this, the shoe is repositioned as shown in FIG. 4 so as to bring handle 1% back to a position wherein it extends substantially perpendicularly to the handle 14 permitting an additional bend to be formed in the tube T as shown in FIG. 4 without a crossing of the handles. The repositioning of the shoe is effected by simply pivoting the shoe from the position shown in dashed lines in FIG. 1 to the position shown in dot-dash lines in FIG. the 'shoe on the link 26 toward the axis 13 until the post is received in the opposite end of the elongated slot 25 permitting the second shoulder 31 to engage 'the link shoulder 27. Handle 19 may then be manipulated to swing the shoe on link 29 from the full line position of FIG. 4 to the dashed line position at the bottom of the bend in the tube T.
The shoe may-be readilyreleas'ed from the tube at the90 position by simply pivoting the shoe in a counterclockwise direction about the spaced from the tube in the 180 position by pivoting the shoe slightly in a' counterclockwise direction to disengage .the shoulder 31 from the link shoulder 27 and permit the "shoe to be slid outwardly along the link 20 away from the gular so as to be received in the recesses in the two difierent tube-bending positions of the Patented June 22, 1965 19. The bending to sewing about theaxis 13 as shown link generally parallel faces toward the inner 4 and thensliding post 24 and may be readily.
shoe. The projection 26 V 1 V lay lbe-bending forces rran'gement permitting be made sturdy so'asto hold thershoe' against'the generated in the'bending operation. hus, tube bender'10 provides a strong maintenance-free facilitated selected positioning of ee shoe so that the user may effect 'a full180, bend v f the tube by manipulation of the two handles through the ame 790 quadrant, effectively eliminating the 'need'for J crossing of the handles at any time.
While'I have shown and described one embodiment of nay invention, it is to be understood thatit is capable If many modifications.
Changes, therefore,1in the =contructionvand arrangement may be made without departing v From :the spiritand scope of the invention as definedin 7 he appended claims. I
I claim:
- 1. In a tube benderhaving a mandrel provided with an axis, a peripheral tube-bending groove annularly,
concentric of said axis, an elongated handle secured to the means for retaining a tube in associationmandrel, and V with the mandrel groove, means for bending the tube into the groove comprisingia connector link having an inner end and an outer end; means connecting-the inner end of the link to said mandr'elto pivot, about 'sai'daxis;
engaging surface and a second tube-engaging surface extendingangularly to said first tube-engaging surface, and tube-engagingsurfaces' a bending shoe having a first tube havingethe same radiusflof curvature in a crosss section;
means connecting the shoe to said outer end ofthelink for pivoting about an axis on said link; a second shoulder on' said shoe engaging said first shoulder when saidshoe is pivoted on the link to a" first position wherein said first tube-engaging surface is juxtaposed to said mandrel groove; and a third shoulder on said shoe engaging said first shoulder when said 'shoe 'is pivoted on the link'to a secondposition wherein said second tube-engaging surface is juxtaposed to'said mandrel groove. J
2. The tube bender ofclairnl wherein said means connecting the shoe to the link comprises a post on one of said shoe and said link and an elongated groove on parallel to said mandrel axis; anrelongated handle secured to the shoe; a first shoulder 1 the other of said shoe and said'link slidably receiving said ost; H. o
3.1 The tube bender of claim 1 wherein said tube-en--.
engagingsurfaces are defined v grooves in the shoe and one of said shoulders is formed in the portion of the shoe'defining shoulder on saidshoe extending 'shoulder projects from the '7. The tube bender of claim 5 wherein said shoe is" provided with a recess adjacent said second shoulder to receive said first shoulder when said shoe is in said first 3 'position. i
gaging surfaces are defined intersecting rectilinearf grooves in the shoe; 7 I
4. The tube bender' of claim wherein" said tubeone of said grooves;
5. In a tube bender centric of said axis, an elongated handle secured to the mandrel, and means for retaining a tube in associationai' with the 'mandrelfgroove, means forbending the tube into a bending shoe having a first tube-engaging surface and a V I facing a second shoulder of said shoe extending parallel to said first tube-engaging surface, saidsecond shoulder engaging said first shoulder when said'shoe is link to the first position wherein said first tube-engagin'g anda third parallel to said second f tube-engaging-surface, said third shoulder engaging said first shoulder when said'shoe is pivoted on theflink to surface is juxtaposed to said mandrel groove;
a second'position whereinflsaid'second tube-engaging sur face is juxtaposed to said mandrel groove. A 6. The tubebender of claim'5 wherein 'said first link parallel to said axes.
References cited bythe Examinei-e UNITED STATES PATENTS J 9/ 39 Beehler et al.- 4/5 8 Klamm, 4/61 Franck.
WILLIAM FELDMAN Printqry Examiner.
by intersecting rectilinear 1 7 having a mandreleprovided with an axis, a; peripheral tube-bending groove annularly conpivot about said axis;'-
toward: said inner, end;
pivoted on the V

Claims (1)

1. IN A TUBE BENDER HAVING A MANDREL PROVIDED WITH AN AXIS, A PERPHERAL TUBE-BENDING GROOVE ANNULARLY CONCENTRIC OF SAID AXIS, AN ELONGATED HANDLE SECURED TO THE MANDREL, AND MEANS FOR RETAINING A TUBE IN ASSOCIATION WITH THE MANDREL GROOVE, MEANS FOR BENDING THE TUBE INTO THE GROOVE COMPRISING: A CONNECTOR LINK HAVING AN INNER END AND AN OUTER END; MEANS CONNECTING THE INNER END OF THE LINK TO SAID MANDREL TO PIVOT ABOUT SAID AXIS; A BENDING SHOE HAVING A FIRST TUBE ENGAGING SURFACE AND A SECOND TUBE-ENGAGING SURFACE EXTENDING ANGULARLY TO SAID FIRST TUBE-ENGAGING SURFACE, AND TUBE-ENGAGING SURFACES HAVING THE SAME RADIUS OF CURVATURE IN A CROSS SECTION; MEAND CONNECTING THE SHOE TO SAID OUTER END OF THE LINK FOR PIVOTING ABOUT AN AXIS PARALLEL TO SAID MANDREL AXIS; AN ELONGATED HANDLE SECURED TO THE SHOE; A FIRST SHOULDER ON SAID LINK; A SECOND SHOULDER ON SAID SHOE ENGAGING SAID FIRST SHOULDER WHEN SAID SHOE IS PIVOTED ON THE LINK TO A FIRST POSITION WHEREIN SAID FIRST TUBE-ENGAGING SURFACE IS JUXTAPOSED TO SAID MANDREL GROOVE; AND A THIRD SHOULDER ON SAID SHOE ENGAGING SAID FIRST SHOULDER WHEN SAID SHOE IS PIVOTED ON THE LINK TO A SECOND POSITION WHEREIN SAID SECOND TUBE-ENGAGING SURFACE IS JUXTAPOSED WHEREIN SAID GROOVE.
US196102A 1962-05-21 1962-05-21 Tube bender Expired - Lifetime US3190105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US196102A US3190105A (en) 1962-05-21 1962-05-21 Tube bender

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US196102A US3190105A (en) 1962-05-21 1962-05-21 Tube bender

Publications (1)

Publication Number Publication Date
US3190105A true US3190105A (en) 1965-06-22

Family

ID=22724104

Family Applications (1)

Application Number Title Priority Date Filing Date
US196102A Expired - Lifetime US3190105A (en) 1962-05-21 1962-05-21 Tube bender

Country Status (1)

Country Link
US (1) US3190105A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3336779A (en) * 1964-10-08 1967-08-22 Wallace J Schall Portable tube bender
US3380283A (en) * 1965-01-11 1968-04-30 Parker Hannifin Corp Tube bending tool
US3416345A (en) * 1965-10-24 1968-12-17 Parker Hannifin Corp Hand-held tube bender and bend centering procedure
US3531963A (en) * 1967-12-04 1970-10-06 Combustion Eng Bending apparatus
US3685335A (en) * 1970-11-05 1972-08-22 Imp Eastman Corp Tube bender
US3789640A (en) * 1972-08-04 1974-02-05 Emerson Electric Co Hand held tube bender
FR2201959A2 (en) * 1972-10-06 1974-05-03 Ragache Claude Bending tool for shaping plastic conduit - fitted with a mechanical stop to avoid interfacial wear or fouling of the tool
FR2604931A1 (en) * 1986-10-14 1988-04-15 Clevite Ind Inc BENDER OF TUBES
US4827755A (en) * 1986-10-14 1989-05-09 Clevite Industries Inc. Manually operable swivel tube bender
US6463780B1 (en) * 2001-10-08 2002-10-15 Stride Tool, Inc. Tube bender and process
US6609405B1 (en) 2002-10-15 2003-08-26 Stride Tool Inc. Tube bender and method of using same
US7143629B1 (en) * 2005-12-14 2006-12-05 Ching-Su Chiu Manual pipe bender

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2171907A (en) * 1936-08-05 1939-09-05 Imp Brass Mfg Co Tube bender
US2831328A (en) * 1954-07-26 1958-04-22 Dole Refrigerating Co Plates and systems for multiple refrigerants
US2979976A (en) * 1959-04-06 1961-04-18 Imp Eastman Corp Plier-type tube bending tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2171907A (en) * 1936-08-05 1939-09-05 Imp Brass Mfg Co Tube bender
US2831328A (en) * 1954-07-26 1958-04-22 Dole Refrigerating Co Plates and systems for multiple refrigerants
US2979976A (en) * 1959-04-06 1961-04-18 Imp Eastman Corp Plier-type tube bending tool

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3336779A (en) * 1964-10-08 1967-08-22 Wallace J Schall Portable tube bender
US3380283A (en) * 1965-01-11 1968-04-30 Parker Hannifin Corp Tube bending tool
US3416345A (en) * 1965-10-24 1968-12-17 Parker Hannifin Corp Hand-held tube bender and bend centering procedure
US3531963A (en) * 1967-12-04 1970-10-06 Combustion Eng Bending apparatus
US3685335A (en) * 1970-11-05 1972-08-22 Imp Eastman Corp Tube bender
US3789640A (en) * 1972-08-04 1974-02-05 Emerson Electric Co Hand held tube bender
FR2201959A2 (en) * 1972-10-06 1974-05-03 Ragache Claude Bending tool for shaping plastic conduit - fitted with a mechanical stop to avoid interfacial wear or fouling of the tool
US4827755A (en) * 1986-10-14 1989-05-09 Clevite Industries Inc. Manually operable swivel tube bender
FR2604931A1 (en) * 1986-10-14 1988-04-15 Clevite Ind Inc BENDER OF TUBES
US6463780B1 (en) * 2001-10-08 2002-10-15 Stride Tool, Inc. Tube bender and process
US6609405B1 (en) 2002-10-15 2003-08-26 Stride Tool Inc. Tube bender and method of using same
US6883360B2 (en) 2002-10-15 2005-04-26 Stride Tool Inc. Tube bender and method of using same
US20050257593A1 (en) * 2002-10-15 2005-11-24 Darryle Bates Tube bender and method of using same
US7096707B2 (en) 2002-10-15 2006-08-29 Stride Tool Inc. Tube bender and method of using same
US20060283230A1 (en) * 2002-10-15 2006-12-21 Darryle Bates Tube bender and method of using same
CN1319667C (en) * 2002-10-15 2007-06-06 斯特里德工具公司 Tube bender and method of using same
US7383716B2 (en) * 2002-10-15 2008-06-10 Stride Tool Inc. Tube bender and method of using same
US20080236240A1 (en) * 2002-10-15 2008-10-02 Stride Tool Inc. Tube bender and method of making same
US7143629B1 (en) * 2005-12-14 2006-12-05 Ching-Su Chiu Manual pipe bender

Similar Documents

Publication Publication Date Title
US3190105A (en) Tube bender
US3156143A (en) Adjustable leverage tool
US2171907A (en) Tube bender
US3194038A (en) Tube bender
US3400568A (en) Die for making right angles on steel
US2232819A (en) Tube bender
US3584492A (en) Tube-bending tool
US3320666A (en) Cladding of core materials
US3685335A (en) Tube bender
US3750447A (en) Tube bender
US3323348A (en) Multiple opening die and adjusting means therefor
US3858298A (en) Swaging apparatus
US4116037A (en) Tubing sizer and straightener
US4691555A (en) Tube bending tool
US2955495A (en) Multiple head tube bending device
US4403497A (en) Bead bending tool
US2953048A (en) Angle-indicating attachment for a pipe bender
US4827755A (en) Manually operable swivel tube bender
US2637231A (en) Tube bending pliers
JPH11226654A (en) Pipe bender
US3051218A (en) Tube bender
US3789640A (en) Hand held tube bender
US2141010A (en) Ring bending mechanism
US3301036A (en) Small diameter tube bender
US3729975A (en) Bender for wire or flat stock

Legal Events

Date Code Title Description
AS Assignment

Owner name: IMPERIAL CLEVITE INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:I-T-E IMPERIAL CORPORATION;REEL/FRAME:003993/0242

Effective date: 19810928

Owner name: IMPERIAL CLEVITE INC.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:I-T-E IMPERIAL CORPORATION;REEL/FRAME:003993/0242

Effective date: 19810928