US2753744A - Power driven pipe wrench - Google Patents

Power driven pipe wrench Download PDF

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Publication number
US2753744A
US2753744A US461198A US46119854A US2753744A US 2753744 A US2753744 A US 2753744A US 461198 A US461198 A US 461198A US 46119854 A US46119854 A US 46119854A US 2753744 A US2753744 A US 2753744A
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United States
Prior art keywords
body member
pipe
clamping member
handle
clamping
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Expired - Lifetime
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US461198A
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Francis N Therien
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/002—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose for special purposes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/16—Connecting or disconnecting pipe couplings or joints
    • E21B19/168—Connecting or disconnecting pipe couplings or joints using a spinner with rollers or a belt adapted to engage a well pipe

Definitions

  • the present invention relates generally to tools and in particular to an electrically driven portable pipe wrench.
  • the principal object of the present invention is to provide a portable pipe wrench having an electric motor operable to rotate a pipe when held between the jaws of the wrench.
  • Another object of the present invention is to provide a wrench having an adjustable clamping member for clamping the jaws of the wrench around a pipe so that the rollers which rotate the pipe may bite into the pipe.
  • a further object of the present invention is to provide a portable pipe wrench which has its clamping member operative in connection with the handle to form a gripping member for securing the pipe within the recess formed by the clamping member and the body of the Wrench.
  • a still further object of the present invention is to provide a Wrench of sturdy and simple construction and one which is efiicient in operation and one which may be made in a variety of sizes to suit particularly sized pipes or to be used in various industries as desired.
  • Figure l is a top plan View of the present invention.
  • Figure 2 is a side view in elevation and partially in cross section, showing in dotted lines the sliding movement of the clamping member of the invention.
  • Figure 3 is a partial view partially in cross section on line 33 of Figure 2.
  • Figure 4 is an end view in cross section on line 4-4 of Figure 2, and
  • Figure 5 is a further cross sectional view on line 55 of Figure 2.
  • the present invention is seen to consist of a body member having a handle 11 at one end and having a clamping member 12 slidably carried on the body member and movable in back and forth movements toward and away from the handle 11.
  • the body member 10 is formed on its top edge with a trackway 13 which provides a slide for the undercut inner wall 14 of the clamping member 12.
  • the clamping member 12 is formed with an upstanding rib 15 which has a hole 16 receiving the thumb screw 17 for adjustment of the clamping member 12 longitudinally with respect to the body member 10 and to the arms 18 which overlie the rib 15 on each side and are pivotally connected to the short leg 19 of the L-shaped gripping member 20.
  • the L-shaped gripping member 20 is positioned so that the long leg overlies the handle 11 and is pivotally connected as at 20 to the body member 10.
  • the body member 10 and the clamping member 12 are arranged with respect to each other so as to have confronting walls 21 and 22, respectively, which form a recess into which a pipe, indicated in dotted lines at 2,753,744 Patented July 10', 1956 36 in Figure 2, may be inserted transversely of its length for rotation.
  • the wall 22 of the clamping member 12 is formed with a hollowed-out portion into which fits a freely rotatable roller 23, journaled on a shaft 24 fixed in each side of the clamping member 12 across the hollowed-out portion.
  • the body member 10 is provided with spaced apart side walls 25 and 26 and has a gear train as indicated by the reference numeral 27 pinioned therein for driving a pair of spaced apart gripping rollers 28 and 29.
  • An electric motor 30 is built into the body member 10 adjacent the handle 11 and is operably connected to the first gear 31 in the gear train by the worm 32 on its shaft 33.
  • the gear train transmits the power of the motor 30 at a reduced speed and with greater torque to the gripping rollers 28 and 29, the outer surfaces of which are cylindrical in shape and are provided with knurled, milled, or other gripping means so that they bite into the outer wall of a pipe supported in the recess formed between the body member 10 and the roller 23 on the clamping member 12.
  • Suitable bearings one of which is shown at 34 in Figure 2, supports the motor shaft 33 in the body member 10.
  • the arms 18 and the ribs 15 are positioned with respect to each other to provide for sufiicient sliding movement of the clamping member on the body member so that a pipe positioned in the recess may be gripped firmly enough to permit the gripping rollers to rotate it, the long leg 35 of the L-shaped gripping member 20 cooperating with the handle 11 to form a convenient and powerful means of applying the necessary gripping action.
  • a power driven pipe wrench comprising a body member having a handle at one end thereof, a clamping member slidably carried by said body member at the other end thereof for movement toward and away from said handle, said body member and said clamping member being formed with confronting walls forming a pipe receiving recess, support means connected to said wall of said clamping member for engaging a pipe received in said recess, roller means connected to the wall of said body member for rotatably engaging said pipe when received in said recess, means carried by said body member for effecting rotation of said roller means, and means carried by said body member for effecting movement of the said clamping member for clamping said pipe between said support means and said roller means, said last mentioned means comprising an upstanding rib extending longitudinally of and on said clamping member, a pair of spaced longitudinally extending arms carried by said body member and slidably receiving said rib therebetween, means connecting said rib to said arms, and an L-shaped gripping member positioned so that the long leg overlies said handle pivotally connected at the jointure point
  • a power driven pipe wrench comprising a body member having a handle at one end thereof, a clamping member slidably carried by said body member at the other end thereof for movement toward and away from said handle, said body member and said clamping member being formed with confronting walls forming a pipe receiving recess, a freely rotatable roller connected to said wall of said clamping member for supportably engaging a pipe received in said recess, roller means connected to the wall of said body member for rotatably engaging said pipe when received in said recess, means carried by said body member for effecting rotation of said roller means, and means carried by said body member for effecting movement of said clamping member toward said handle for clamping said pipe between said rotable roller and said roller means, said last mentioned means comprising an upstanding rib extending longitudinally of and on said clamping member, a pair of spaced longitudinally extending arms carried by said body member and slidably receiving said rib therebetween, means connecting said rib to said arms, and an L-shaped gripping member positioned so that the long leg
  • a power driven pipe wrench comprising a body member having a handle at one end thereof, a clamping member slidably carried by said body member at the other end thereof for movement toward and away from said handle, said body member and said clamping member being formed with confronting walls forming a pipe receiving recess, a freely rotatable roller connected to said wall of said clamping member for supportably engaging a pipe received in said recess, a pair of rotatable rollers carried on said wall of said body member for rotation of said pipe when received in said recess, means carried by said body for effecting rotation of said pair of rollers, and means carried by said body member for effecting movement of said clamping member toward said handle for clamping said pipe between said rotatable roller and said pair of rollers, said last mentioned means comprising an upstanding rib extending lingitudinally of and on said clamping member, a pair of spaced 1ongitudinally extending arms carried by said body member and slidably receiving said rib therebetween, means connecting said rib to said

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

y 0, 1956 F. N. THERIEN POWER DRIVEN PIPE WRENCH 2 Sheets-Sheet 1 Filfld Oct. 8, 1954 INVENTOR. FRAucufi Nfl'uameu ATTO 2M EYS y 10, 1956 I F. N. THERlEN 2,753,744
POWER DRIVEN PIPE WRENCH Filed Oct. 8, 1954 2 Sheets-Sheet 2 lrll/lllnlrllll" Fig. 4 Fi% 5 .L 5 le .rr 13 Q4 32 k k L 23 INVENTOR. FR ANC\$ N.THEP.\EN
United States Patent O POWER DRIVEN PIPE WRENCH Francis N. Therien, Pacoima, Calif.
Application October 8, 1954, Serial No. 461,198
3 Claims. (Cl. 81-57) The present invention relates generally to tools and in particular to an electrically driven portable pipe wrench.
The principal object of the present invention is to provide a portable pipe wrench having an electric motor operable to rotate a pipe when held between the jaws of the wrench.
Another object of the present invention is to provide a wrench having an adjustable clamping member for clamping the jaws of the wrench around a pipe so that the rollers which rotate the pipe may bite into the pipe.
A further object of the present invention is to provide a portable pipe wrench which has its clamping member operative in connection with the handle to form a gripping member for securing the pipe within the recess formed by the clamping member and the body of the Wrench.
A still further object of the present invention is to provide a Wrench of sturdy and simple construction and one which is efiicient in operation and one which may be made in a variety of sizes to suit particularly sized pipes or to be used in various industries as desired.
These and other objects and advantages of the present invention will be fully apparent from the following description when considered in connection with the annexed drawings, in which:
Figure l is a top plan View of the present invention.
Figure 2 is a side view in elevation and partially in cross section, showing in dotted lines the sliding movement of the clamping member of the invention.
Figure 3 is a partial view partially in cross section on line 33 of Figure 2.
Figure 4 is an end view in cross section on line 4-4 of Figure 2, and
Figure 5 is a further cross sectional view on line 55 of Figure 2.
Referring in greater detail to the drawing, in which like reference numerals indicate like parts throughout the several views, the present invention is seen to consist of a body member having a handle 11 at one end and having a clamping member 12 slidably carried on the body member and movable in back and forth movements toward and away from the handle 11.
As best shown in Figure 4, the body member 10 is formed on its top edge with a trackway 13 which provides a slide for the undercut inner wall 14 of the clamping member 12. The clamping member 12 is formed with an upstanding rib 15 which has a hole 16 receiving the thumb screw 17 for adjustment of the clamping member 12 longitudinally with respect to the body member 10 and to the arms 18 which overlie the rib 15 on each side and are pivotally connected to the short leg 19 of the L-shaped gripping member 20. The L-shaped gripping member 20 is positioned so that the long leg overlies the handle 11 and is pivotally connected as at 20 to the body member 10.
The body member 10 and the clamping member 12 are arranged with respect to each other so as to have confronting walls 21 and 22, respectively, which form a recess into which a pipe, indicated in dotted lines at 2,753,744 Patented July 10', 1956 36 in Figure 2, may be inserted transversely of its length for rotation.
The wall 22 of the clamping member 12 is formed with a hollowed-out portion into which fits a freely rotatable roller 23, journaled on a shaft 24 fixed in each side of the clamping member 12 across the hollowed-out portion. The body member 10 is provided with spaced apart side walls 25 and 26 and has a gear train as indicated by the reference numeral 27 pinioned therein for driving a pair of spaced apart gripping rollers 28 and 29.
An electric motor 30 is built into the body member 10 adjacent the handle 11 and is operably connected to the first gear 31 in the gear train by the worm 32 on its shaft 33.
The gear train transmits the power of the motor 30 at a reduced speed and with greater torque to the gripping rollers 28 and 29, the outer surfaces of which are cylindrical in shape and are provided with knurled, milled, or other gripping means so that they bite into the outer wall of a pipe supported in the recess formed between the body member 10 and the roller 23 on the clamping member 12. Suitable bearings, one of which is shown at 34 in Figure 2, supports the motor shaft 33 in the body member 10.
In operation, the arms 18 and the ribs 15 are positioned with respect to each other to provide for sufiicient sliding movement of the clamping member on the body member so that a pipe positioned in the recess may be gripped firmly enough to permit the gripping rollers to rotate it, the long leg 35 of the L-shaped gripping member 20 cooperating with the handle 11 to form a convenient and powerful means of applying the necessary gripping action.
While only a single embodiment of the present invention has been here shown and described, other embodiments of the invention are contemplated and many changes and modifications of the invention may be made within the scope of the appended claims without departing from the spirit of the invention.
What is claimed is:
1. A power driven pipe wrench comprising a body member having a handle at one end thereof, a clamping member slidably carried by said body member at the other end thereof for movement toward and away from said handle, said body member and said clamping member being formed with confronting walls forming a pipe receiving recess, support means connected to said wall of said clamping member for engaging a pipe received in said recess, roller means connected to the wall of said body member for rotatably engaging said pipe when received in said recess, means carried by said body member for effecting rotation of said roller means, and means carried by said body member for effecting movement of the said clamping member for clamping said pipe between said support means and said roller means, said last mentioned means comprising an upstanding rib extending longitudinally of and on said clamping member, a pair of spaced longitudinally extending arms carried by said body member and slidably receiving said rib therebetween, means connecting said rib to said arms, and an L-shaped gripping member positioned so that the long leg overlies said handle pivotally connected at the jointure point of the long and short legs to said body member and having the short leg pivotally connected to said arms.
2. A power driven pipe wrench comprising a body member having a handle at one end thereof, a clamping member slidably carried by said body member at the other end thereof for movement toward and away from said handle, said body member and said clamping member being formed with confronting walls forming a pipe receiving recess, a freely rotatable roller connected to said wall of said clamping member for supportably engaging a pipe received in said recess, roller means connected to the wall of said body member for rotatably engaging said pipe when received in said recess, means carried by said body member for effecting rotation of said roller means, and means carried by said body member for effecting movement of said clamping member toward said handle for clamping said pipe between said rotable roller and said roller means, said last mentioned means comprising an upstanding rib extending longitudinally of and on said clamping member, a pair of spaced longitudinally extending arms carried by said body member and slidably receiving said rib therebetween, means connecting said rib to said arms, and an L-shaped gripping member positioned so that the long leg overlies said handle pivotally connected at the jointure point of the long and short legs to said body member and having the short leg pivotally connected to said arms.
3. A power driven pipe wrench comprising a body member having a handle at one end thereof, a clamping member slidably carried by said body member at the other end thereof for movement toward and away from said handle, said body member and said clamping member being formed with confronting walls forming a pipe receiving recess, a freely rotatable roller connected to said wall of said clamping member for supportably engaging a pipe received in said recess, a pair of rotatable rollers carried on said wall of said body member for rotation of said pipe when received in said recess, means carried by said body for effecting rotation of said pair of rollers, and means carried by said body member for effecting movement of said clamping member toward said handle for clamping said pipe between said rotatable roller and said pair of rollers, said last mentioned means comprising an upstanding rib extending lingitudinally of and on said clamping member, a pair of spaced 1ongitudinally extending arms carried by said body member and slidably receiving said rib therebetween, means connecting said rib to said arms, and an L-shaped gripping member positioned so that the long leg overlies said handle pivotally connected at the jointure point of the long and short legs to said body member and having the short leg pivotally connected to said arms.
References Cited in the file of this patent UNITED STATES PATENTS 1,304,770 Hestand May 27, 1919 1,805,007 Pedley May 12, 1931 2,195,568 Hexdall Apr. 2, 1940 2,460,671 Benedick Feb. 1, 1949 2,615,682 Stone Oct. 28, 1952
US461198A 1954-10-08 1954-10-08 Power driven pipe wrench Expired - Lifetime US2753744A (en)

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938416A (en) * 1959-04-01 1960-05-31 William T Maness Chain-gear driven power wrench
US3181238A (en) * 1963-05-23 1965-05-04 Liggio Leo Luca Pistol grip pipe cutter
US3520218A (en) * 1968-04-10 1970-07-14 Us Navy Transistor cap remover
US3521509A (en) * 1967-08-16 1970-07-21 Donald C Duke Pipe spinner
DE3400952A1 (en) * 1984-01-13 1985-09-26 Hofmann Werkstatt-Technik GmbH, 6102 Pfungstadt Device for turning screwed connections
WO1987002609A1 (en) * 1985-11-04 1987-05-07 Richard Harvey Killian Powered pipe wrench
US4843924A (en) * 1987-09-10 1989-07-04 Hawk Industries, Inc. Compact high-torque apparatus and method for rotating pipe
US5295897A (en) * 1992-12-04 1994-03-22 Marucho Shokuhin Kako Kabushiki Kaisha Fish fin remover
US5349751A (en) * 1991-05-17 1994-09-27 Georg Fischer Rohrleitungssysteme Ag Pipe cutoff apparatus
US5351582A (en) * 1992-09-04 1994-10-04 Aldridge Electric Inc. Pipe turning tool
US5475924A (en) * 1995-05-02 1995-12-19 Mcdaniel; William A. Tubing cutter
US5528830A (en) * 1994-02-18 1996-06-25 Hansen; Fredrick M. Rotary cutting tool for tubing, conduit and the like
DE19643488A1 (en) * 1996-10-22 1998-04-23 Josef Ranner Tool for turning tubes
WO1999048648A2 (en) * 1998-03-24 1999-09-30 Fraunhofer Gesellschaft Zur Förderung Der Angewandten Forschung E. V. Device for surrounding a cylindrical workpiece by shape-connection
US6189216B1 (en) 1998-01-27 2001-02-20 Emerson Electric Co. Tube cutting and preparation tool and method
US20040131449A1 (en) * 2002-10-04 2004-07-08 Thompson Carroll R. Pipe handling apparatus for pick-up and lay-down machine
US20050076744A1 (en) * 2003-10-08 2005-04-14 Weatherford/Lamb, Inc. Apparatus and methods for connecting tubulars
US20060032351A1 (en) * 2004-08-13 2006-02-16 Scinta John J Methods and apparatus for cutting tubing
WO2006096172A1 (en) * 2005-03-04 2006-09-14 Milisav Lazarevic Power tool for tube cutting and treating
US20060243488A1 (en) * 2005-05-02 2006-11-02 Weatherford/Lamb, Inc. Tailing in and stabbing device
US20080250648A1 (en) * 2007-04-11 2008-10-16 Theodore Parish Pipe cleaning and cutting tool
US7509722B2 (en) * 1997-09-02 2009-03-31 Weatherford/Lamb, Inc. Positioning and spinning device
KR100893353B1 (en) 2007-06-26 2009-04-15 오에스지 파워 툴스 아이앤씨이 A powered tool for tube cutting and treating
ITRE20100070A1 (en) * 2010-09-13 2012-03-14 Casarini Srl GROUP FOR THE SCREWING OF THREADED BODIES
EP3126612A1 (en) * 2014-03-31 2017-02-08 Hawk Industries, Inc. Apparatus for rotating a pipe
US20220009059A1 (en) * 2020-07-13 2022-01-13 Milwaukee Electric Tool Corporation Pipe fitting tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1304770A (en) * 1919-05-27 hesiawb
US1805007A (en) * 1927-12-27 1931-05-12 Elmer C Pedley Pipe coupling apparatus
US2195568A (en) * 1938-06-25 1940-04-02 Andrew M Hexdall Multipurpose tool
US2460671A (en) * 1945-11-01 1949-02-01 Joseph M Benedick Positioning means
US2615682A (en) * 1951-03-24 1952-10-28 Standard Oil Dev Co Power-operated slidable jaw pipe tong

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1304770A (en) * 1919-05-27 hesiawb
US1805007A (en) * 1927-12-27 1931-05-12 Elmer C Pedley Pipe coupling apparatus
US2195568A (en) * 1938-06-25 1940-04-02 Andrew M Hexdall Multipurpose tool
US2460671A (en) * 1945-11-01 1949-02-01 Joseph M Benedick Positioning means
US2615682A (en) * 1951-03-24 1952-10-28 Standard Oil Dev Co Power-operated slidable jaw pipe tong

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938416A (en) * 1959-04-01 1960-05-31 William T Maness Chain-gear driven power wrench
US3181238A (en) * 1963-05-23 1965-05-04 Liggio Leo Luca Pistol grip pipe cutter
US3521509A (en) * 1967-08-16 1970-07-21 Donald C Duke Pipe spinner
US3520218A (en) * 1968-04-10 1970-07-14 Us Navy Transistor cap remover
DE3400952A1 (en) * 1984-01-13 1985-09-26 Hofmann Werkstatt-Technik GmbH, 6102 Pfungstadt Device for turning screwed connections
WO1987002609A1 (en) * 1985-11-04 1987-05-07 Richard Harvey Killian Powered pipe wrench
US4843924A (en) * 1987-09-10 1989-07-04 Hawk Industries, Inc. Compact high-torque apparatus and method for rotating pipe
US5349751A (en) * 1991-05-17 1994-09-27 Georg Fischer Rohrleitungssysteme Ag Pipe cutoff apparatus
US5351582A (en) * 1992-09-04 1994-10-04 Aldridge Electric Inc. Pipe turning tool
US5295897A (en) * 1992-12-04 1994-03-22 Marucho Shokuhin Kako Kabushiki Kaisha Fish fin remover
US5528830A (en) * 1994-02-18 1996-06-25 Hansen; Fredrick M. Rotary cutting tool for tubing, conduit and the like
US5475924A (en) * 1995-05-02 1995-12-19 Mcdaniel; William A. Tubing cutter
DE19643488A1 (en) * 1996-10-22 1998-04-23 Josef Ranner Tool for turning tubes
DE19643488C2 (en) * 1996-10-22 2000-03-02 Josef Ranner Device for rotating essentially tubular objects
US7509722B2 (en) * 1997-09-02 2009-03-31 Weatherford/Lamb, Inc. Positioning and spinning device
US6189216B1 (en) 1998-01-27 2001-02-20 Emerson Electric Co. Tube cutting and preparation tool and method
US6336270B1 (en) 1998-01-27 2002-01-08 Emerson Electric Co. Tube cutting and preparation tool and method
WO1999048648A3 (en) * 1998-03-24 1999-11-11 Fraunhofer Ges Forschung Device for surrounding a cylindrical workpiece by shape-connection
WO1999048648A2 (en) * 1998-03-24 1999-09-30 Fraunhofer Gesellschaft Zur Förderung Der Angewandten Forschung E. V. Device for surrounding a cylindrical workpiece by shape-connection
US7431550B2 (en) 2002-10-04 2008-10-07 Technologies Alliance Pipe handling apparatus for pick-up and lay-down machine
US20040131449A1 (en) * 2002-10-04 2004-07-08 Thompson Carroll R. Pipe handling apparatus for pick-up and lay-down machine
US20050076744A1 (en) * 2003-10-08 2005-04-14 Weatherford/Lamb, Inc. Apparatus and methods for connecting tubulars
US7707914B2 (en) 2003-10-08 2010-05-04 Weatherford/Lamb, Inc. Apparatus and methods for connecting tubulars
US20060032351A1 (en) * 2004-08-13 2006-02-16 Scinta John J Methods and apparatus for cutting tubing
WO2006096172A1 (en) * 2005-03-04 2006-09-14 Milisav Lazarevic Power tool for tube cutting and treating
US7743510B2 (en) 2005-03-04 2010-06-29 Osg Power Tools, Inc. Powered tool for tube cutting and treating
US20060243488A1 (en) * 2005-05-02 2006-11-02 Weatherford/Lamb, Inc. Tailing in and stabbing device
US7552775B2 (en) 2005-05-02 2009-06-30 Weatherford/Lamb, Inc. Tailing in and stabbing device and method
US20080250648A1 (en) * 2007-04-11 2008-10-16 Theodore Parish Pipe cleaning and cutting tool
US7823235B2 (en) * 2007-04-11 2010-11-02 Theodore Parish Pipe cleaning and cutting tool
KR100893353B1 (en) 2007-06-26 2009-04-15 오에스지 파워 툴스 아이앤씨이 A powered tool for tube cutting and treating
ITRE20100070A1 (en) * 2010-09-13 2012-03-14 Casarini Srl GROUP FOR THE SCREWING OF THREADED BODIES
EP3126612A1 (en) * 2014-03-31 2017-02-08 Hawk Industries, Inc. Apparatus for rotating a pipe
EP3126612A4 (en) * 2014-03-31 2017-03-29 Hawk Industries, Inc. Apparatus for rotating a pipe
US20220009059A1 (en) * 2020-07-13 2022-01-13 Milwaukee Electric Tool Corporation Pipe fitting tool

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