US3059905A - Hydraulic jumper extractor - Google Patents

Hydraulic jumper extractor Download PDF

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Publication number
US3059905A
US3059905A US80638A US8063861A US3059905A US 3059905 A US3059905 A US 3059905A US 80638 A US80638 A US 80638A US 8063861 A US8063861 A US 8063861A US 3059905 A US3059905 A US 3059905A
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Prior art keywords
jumper
dogs
extractor
tension members
hydraulic
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US80638A
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Tompkins George Maxwell
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PUTCO OPERATING AND TECHNICAL
PUTCO OPERATING AND TECHNICAL SERVICES Ltd
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PUTCO OPERATING AND TECHNICAL
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B19/02—Rod or cable suspensions
    • E21B19/06—Elevators, i.e. rod- or tube-gripping devices
    • E21B19/07—Slip-type elevators
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing

Definitions

  • FIG.2 Oct. 23, 1962 G. M. ToMPKlNs HYDRAULIC JUMPER ExTRAcToR Filed Jan. 4, 1961 FIGA -uvENTo 66eme Hnxwsu. IBMFKINS FIG.2
  • the jumper extractor comprises a rigid structure supported by a pair of hydraul1c cylinders with plungers mounted to be projected therefrom, a pair of gripping dogs inline with and between the bottoms of the cylinders and a pair of tension members tying the dogs to the structure.
  • the invention provides a jumper extractor with the two hydraulic cylinders spaced apart, rigid yoke ⁇ shaped structures clamping the cylinders top and bottom with the centre portion of the yoke providing an opening from top to bottom in line between them, plungers from the cylinders adapted to Ibe projected downwardly, pending tension members parallel to the cylinders and in line with the central opening of the yoke, said members flexibly anchored in the top structure, a cam shaped dog pivotally secured to the end of each member, tension springs attached to the dogs normally to close them, a reservoir held between the structures, a pump in the top structure and a passage connecting the reservoir to the hydraulic cylinders.
  • the invention further provides for the tension members to be flexible and to be threaded through slots in the dogs and secured therein by pivots olset from the centre of the dogs.
  • FIG. 1 is a front elevation
  • FIG. 2 is a plan thereof
  • FIG. 3 shows the dogs in elevation
  • FIG. 4 is -a plan View of the dogs.
  • 11 shows a pair of hydraulic cylinders made by a pair of tubes clamped between a suitably shaped plate 12 at their lower ends and 'a metal casting 13 in which their tops are accommodated.
  • These hydraulic cylinders 11 have plungers each consisting of a piston head 14 and a plunger 15 sliding through the plate 12 forming the bottom covers for the cylinders 11.
  • These sliding plungers 15 are iitted with suitable shoes 16 which maybe of hard metal and shaped to make contact with the ground drilled by the jumper to be extracted.
  • the top casting 13 and the bottom plate 12 are someof the extractor
  • what yoke shaped So that the jumper 17 to be extracted may be located centrally on a line 18-18 between the centres of the hydraulic cylinders 11.
  • tension members 20 From apertures 19 in the top casting hang a pair of tension members 20. These members hang on each side of the central opening 21 in the yoke shape, that is in line on either side of the central opening 21. This a1- lows them to be in line and on each side of the stuck jumper 17 or the like.
  • the tension members 20 are themselves made of tlexible material.
  • the members 20 are passed into slots 22 in the gripping dogs 23.
  • These dogs 23 are given the usual cam shape and are mutually disposed so that they rotate to grip a jumper 17 or the like between them.
  • the slot 22 for threading the member 20 through each dog 23 is oi-set away trom the cam 24 in each case.
  • the outward spread of the dogs 23 is limited by a block 25 to which they are pivoted by pivots 26 held in block 25 by detents 35 and the pins 27 for attaching dogs 23 to the .tension members 20 is eccentric to the pivots 26.
  • a third cylinder 28 which serves as a reservoir for the iluid for the hydraulic cylinders.
  • a manually operated pump 29 and passages and valves 30 are provided to enable fluid to be pumped from the reservoir 28 to the hydraulic cylinders 1l.
  • a suitable valve releases the uid which is returned to the reservoir 2S ywhen the plungers in the cylinder 1,1 are pushed back.
  • the extractor To make use of the extractor it is placed so that it straddles the projecting end of the jumper 17. In this position the end of the jumper 17 may be only long enough to be gripped by the dogs 23 resting on the rock face or the end of the jumper 17 may extend into the extractor as shown or well above it.
  • the clamping dogs 23 are pressed against opposite sides of the jumper 17 by the tension springs 31 which tie the tension members 20 to the top casting 13.
  • the tension members 20 are slotted at' 32 about their supporting pins 33.
  • the action of the springs 31 is to bring the block 25 against plate 12 ready for the engagement of the dogs 23 with the jumper 17.
  • the pump 29 passes uid .to the hydraulic cylinders or jacks 11 which are in line 18 on opposite sides of the jumper 17.
  • the hydraulic jacks 11 start to li-ft the casting 13 which in turn pulls on the tension members 20.
  • the dogs 23 grip the jumper 17 between them and the grip is increased with the pull of the tension members 20.
  • the tension members 20 are so hung that the jumper 17' can be shaken or rotated slightly to loosen it while the grip of the dogs 23 and the pull on the tension members 20 are maintained.
  • a jumper extractor comprising a rigid structure, -a pair of hydraulic cylinders spaced apart in parallel relationship with plungers projecting therefrom, said plungers projecting ⁇ from said structure in a plane with and on opposite sides of the jumper, a pair of gripping dogs in the same plane, a pair of elongated, resilient tension members pivotally suspended at one end from said structure substantially parallel to said plungers and which are pivotally attached at the other end to said gripping 3 dogs, and a hydraulic pump in said structure connected with said cyli-nders.
  • a jumper extractor as claimed in claim 1 in which said rigid structure comprises a .pair of yoke pieces which engage said hydraulic cylinders ⁇ at their ends, said yoke 5 pieces having an opening therein extending unobstructedly between said cylinders which will accommodate the gripping dogs and the jumper to be extracted.
  • a jumper extractor as claimed in claim 1 in which a. pair of elongated springs is provided, each of said springs being attached at one end to said rigid structure, and the other end of which Ais lattached to said tension members such that said gripping dogs are brought into operation to grip a juniper.
  • a jumper extractor as claimed in claim 1 in which said dogs are each Irotatably mounted on a single block and said tension members are attached ⁇ to said dogs eccentricaliy to said rotatable mounting.

Description

Oct. 23, 1962 G. M. ToMPKlNs HYDRAULIC JUMPER ExTRAcToR Filed Jan. 4, 1961 FIGA -uvENTo 66eme Hnxwsu. IBMFKINS FIG.2
United States Patent Oh 3,059,905 Patented Oct. Z3, 1962 3,059,905 HYDRAULIC JUMPER EXTRACTOR George Maxwell Tompkins, Parktown West, Johannesburg, Transvaal, Republic of South Africa, assigner to Putco Operating and Technical Services Limited, Johannesburg, Transvaal, Republic of South Africa n .Filed Jan. 4, 1961, Ser. No. 80,638 Claims priority, application Republic of South Africa Jan. 5, 1960 4 Claims. (Cl. 254-30) This invention relates to means for extracting rock drills, jumpers or drill steels (hereinafter referred to as jumpers), which become stuck in holes in rock during drilling operations,
Many devices have been developed for releasing jumpers which cannot normally be withdrawn from the hole which is being drilled in a rock for providing a hole for the insertion of a blasting charge.
It is the object of this invention to provide an extractor which is compact and self-contained and which operates by means of a special form of hydraulic jack.
In accordance with this invention the jumper extractor comprises a rigid structure supported by a pair of hydraul1c cylinders with plungers mounted to be projected therefrom, a pair of gripping dogs inline with and between the bottoms of the cylinders and a pair of tension members tying the dogs to the structure.
In more detail the invention provides a jumper extractor with the two hydraulic cylinders spaced apart, rigid yoke `shaped structures clamping the cylinders top and bottom with the centre portion of the yoke providing an opening from top to bottom in line between them, plungers from the cylinders adapted to Ibe projected downwardly, pending tension members parallel to the cylinders and in line with the central opening of the yoke, said members flexibly anchored in the top structure, a cam shaped dog pivotally secured to the end of each member, tension springs attached to the dogs normally to close them, a reservoir held between the structures, a pump in the top structure and a passage connecting the reservoir to the hydraulic cylinders.
The invention further provides for the tension members to be flexible and to be threaded through slots in the dogs and secured therein by pivots olset from the centre of the dogs.
One preferred embodiment of the invention by way of example is illustrated in the accompanying drawing in which:
FIG. 1 is a front elevation FIG. 2 is a plan thereof,
FIG. 3 shows the dogs in elevation, and
FIG. 4 is -a plan View of the dogs.
In the drawing, 11 shows a pair of hydraulic cylinders made by a pair of tubes clamped between a suitably shaped plate 12 at their lower ends and 'a metal casting 13 in which their tops are accommodated.
These hydraulic cylinders 11 have plungers each consisting of a piston head 14 and a plunger 15 sliding through the plate 12 forming the bottom covers for the cylinders 11. These sliding plungers 15 are iitted with suitable shoes 16 which maybe of hard metal and shaped to make contact with the ground drilled by the jumper to be extracted.
The top casting 13 and the bottom plate 12 are someof the extractor,
what yoke shaped So that the jumper 17 to be extracted may be located centrally on a line 18-18 between the centres of the hydraulic cylinders 11.
From apertures 19 in the top casting hang a pair of tension members 20. These members hang on each side of the central opening 21 in the yoke shape, that is in line on either side of the central opening 21. This a1- lows them to be in line and on each side of the stuck jumper 17 or the like. The tension members 20 are themselves made of tlexible material.
On their lower ends the members 20 are passed into slots 22 in the gripping dogs 23. These dogs 23 are given the usual cam shape and are mutually disposed so that they rotate to grip a jumper 17 or the like between them. The slot 22 for threading the member 20 through each dog 23 is oi-set away trom the cam 24 in each case. The outward spread of the dogs 23 is limited by a block 25 to which they are pivoted by pivots 26 held in block 25 by detents 35 and the pins 27 for attaching dogs 23 to the .tension members 20 is eccentric to the pivots 26.
Between ythe casting 13 and the bottom yoke shaped plate 12 is secured a third cylinder 28 which serves as a reservoir for the iluid for the hydraulic cylinders. In the casting 13 is a manually operated pump 29 and passages and valves 30 are provided to enable fluid to be pumped from the reservoir 28 to the hydraulic cylinders 1l. A suitable valve releases the uid which is returned to the reservoir 2S ywhen the plungers in the cylinder 1,1 are pushed back.
To make use of the extractor it is placed so that it straddles the projecting end of the jumper 17. In this position the end of the jumper 17 may be only long enough to be gripped by the dogs 23 resting on the rock face or the end of the jumper 17 may extend into the extractor as shown or well above it.
The clamping dogs 23 are pressed against opposite sides of the jumper 17 by the tension springs 31 which tie the tension members 20 to the top casting 13. The tension members 20 are slotted at' 32 about their supporting pins 33.
The action of the springs 31 is to bring the block 25 against plate 12 ready for the engagement of the dogs 23 with the jumper 17.
The pump 29 passes uid .to the hydraulic cylinders or jacks 11 which are in line 18 on opposite sides of the jumper 17. The hydraulic jacks 11 start to li-ft the casting 13 which in turn pulls on the tension members 20. The dogs 23 grip the jumper 17 between them and the grip is increased with the pull of the tension members 20. The tension members 20 are so hung that the jumper 17' can be shaken or rotated slightly to loosen it while the grip of the dogs 23 and the pull on the tension members 20 are maintained.
What I claim as new and desire to secure by Letters Patent is:
1. A jumper extractor comprising a rigid structure, -a pair of hydraulic cylinders spaced apart in parallel relationship with plungers projecting therefrom, said plungers projecting `from said structure in a plane with and on opposite sides of the jumper, a pair of gripping dogs in the same plane, a pair of elongated, resilient tension members pivotally suspended at one end from said structure substantially parallel to said plungers and which are pivotally attached at the other end to said gripping 3 dogs, and a hydraulic pump in said structure connected with said cyli-nders.
2. A jumper extractor as claimed in claim 1 in which said rigid structure comprises a .pair of yoke pieces which engage said hydraulic cylinders `at their ends, said yoke 5 pieces having an opening therein extending unobstructedly between said cylinders which will accommodate the gripping dogs and the jumper to be extracted.
3. A jumper extractor as claimed in claim 1 in which a. pair of elongated springs is provided, each of said springs being attached at one end to said rigid structure, and the other end of which Ais lattached to said tension members such that said gripping dogs are brought into operation to grip a juniper.
4 4. A jumper extractor as claimed in claim 1 in which said dogs are each Irotatably mounted on a single block and said tension members are attached `to said dogs eccentricaliy to said rotatable mounting.
References Cited in the le of this patent UNITED STATES PATENTS 1,239,875 Bruce Sept. 11, 1917 2,874,933 Feucht Feb. 2A, 1959 2,918,257 Hahn Dec. 22, 1959 2,967,044 Corcreham et al. Ian. 3, 1961
US80638A 1960-01-05 1961-01-04 Hydraulic jumper extractor Expired - Lifetime US3059905A (en)

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3329401A (en) * 1961-06-19 1967-07-04 Becker Drilling Alberta Ltd Apparatus for recovering drill pipe
US3647185A (en) * 1969-10-24 1972-03-07 William Wayne Phibbs Power-operated pulling implement
US4555090A (en) * 1983-09-23 1985-11-26 Averhoff Wil W Fence post driving and pulling apparatus
US4706935A (en) * 1986-10-15 1987-11-17 Thompson Gregory L Post puller
US5743340A (en) * 1993-04-01 1998-04-28 Giacomini; Michael E. Weed pulling apparatus
US6056271A (en) * 1998-08-27 2000-05-02 Riojas; Raul Post puller
US20090028649A1 (en) * 2007-07-25 2009-01-29 Roger Ringelstetter Silt fence removal tool
US20090232624A1 (en) * 2007-10-24 2009-09-17 T&T Engineering Services Pipe handling apparatus with arm stiffening
US20100034619A1 (en) * 2007-10-24 2010-02-11 T&T Engineering Services Header structure for a pipe handling apparatus
US20100034620A1 (en) * 2007-10-24 2010-02-11 T&T Engineering Services Telescoping jack for a gripper assembly
US20100032213A1 (en) * 2007-10-24 2010-02-11 T&T Engineering Services Apparatus and method for pre-loading of a main rotating structural member
US20100187740A1 (en) * 2009-01-26 2010-07-29 T&T Engineering Services Pipe gripping apparatus
US20100230166A1 (en) * 2009-03-12 2010-09-16 T&T Engineering Services Derrickless tubular servicing system and method
US20100254784A1 (en) * 2009-04-03 2010-10-07 T & T Engineering Services Raise-assist and smart energy system for a pipe handling apparatus
US7918636B1 (en) 2007-10-24 2011-04-05 T&T Engineering Services Pipe handling apparatus and method
US8192129B1 (en) 2007-10-24 2012-06-05 T&T Engineering Services, Inc. Pipe handling boom pretensioning apparatus
US8192128B2 (en) 2009-05-20 2012-06-05 T&T Engineering Services, Inc. Alignment apparatus and method for a boom of a pipe handling system
US20120267586A1 (en) * 2011-04-22 2012-10-25 Joseph Andrew Brown Puller for concrete form stakes
US8408334B1 (en) 2008-12-11 2013-04-02 T&T Engineering Services, Inc. Stabbing apparatus and method
US8419335B1 (en) 2007-10-24 2013-04-16 T&T Engineering Services, Inc. Pipe handling apparatus with stab frame stiffening
US20130098773A1 (en) * 2010-06-28 2013-04-25 Rio Tinto Alcan International Limited Device for extracting short-circuiting wedges designed for switching in an electrolysis cell for the production of aluminum
US8496238B1 (en) 2009-01-26 2013-07-30 T&T Engineering Services, Inc. Tubular gripping apparatus with locking mechanism
US8646522B1 (en) 2009-01-26 2014-02-11 T&T Engineering Services, Inc. Method of gripping a tubular with a tubular gripping mechanism
US8876452B2 (en) 2009-04-03 2014-11-04 T&T Engineering Services, Inc. Raise-assist and smart energy system for a pipe handling apparatus
US9038712B1 (en) * 2012-02-24 2015-05-26 Triple J Technologies, Llc Tubular lifting apparatus
US9091128B1 (en) 2011-11-18 2015-07-28 T&T Engineering Services, Inc. Drill floor mountable automated pipe racking system
US9476267B2 (en) 2013-03-15 2016-10-25 T&T Engineering Services, Inc. System and method for raising and lowering a drill floor mountable automated pipe racking system
US9500049B1 (en) 2008-12-11 2016-11-22 Schlumberger Technology Corporation Grip and vertical stab apparatus and method
US9556689B2 (en) 2009-05-20 2017-01-31 Schlumberger Technology Corporation Alignment apparatus and method for a boom of a pipe handling system
US10015937B2 (en) * 2016-08-22 2018-07-10 Christian Lane Maxwell Tree, stump and post puller
US10136590B2 (en) * 2016-08-22 2018-11-27 Christian Lane Maxwell Tree, stump and post puller

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1239875A (en) * 1917-03-07 1917-09-11 Miles D Bruce Lift for pump-pipes or pump-rods.
US2874933A (en) * 1955-03-16 1959-02-24 Cleveland Rock Drill Division Power actuated pin puller
US2918257A (en) * 1952-05-15 1959-12-22 Hahn Alexander Adjustable shore
US2967044A (en) * 1957-06-17 1961-01-03 Corcreham Richard Mining drill extractor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1239875A (en) * 1917-03-07 1917-09-11 Miles D Bruce Lift for pump-pipes or pump-rods.
US2918257A (en) * 1952-05-15 1959-12-22 Hahn Alexander Adjustable shore
US2874933A (en) * 1955-03-16 1959-02-24 Cleveland Rock Drill Division Power actuated pin puller
US2967044A (en) * 1957-06-17 1961-01-03 Corcreham Richard Mining drill extractor

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3329401A (en) * 1961-06-19 1967-07-04 Becker Drilling Alberta Ltd Apparatus for recovering drill pipe
US3647185A (en) * 1969-10-24 1972-03-07 William Wayne Phibbs Power-operated pulling implement
US4555090A (en) * 1983-09-23 1985-11-26 Averhoff Wil W Fence post driving and pulling apparatus
US4706935A (en) * 1986-10-15 1987-11-17 Thompson Gregory L Post puller
US5743340A (en) * 1993-04-01 1998-04-28 Giacomini; Michael E. Weed pulling apparatus
US6056271A (en) * 1998-08-27 2000-05-02 Riojas; Raul Post puller
US20090028649A1 (en) * 2007-07-25 2009-01-29 Roger Ringelstetter Silt fence removal tool
US8696288B2 (en) 2007-10-24 2014-04-15 T&T Engineering Services, Inc. Pipe handling boom pretensioning apparatus
US7918636B1 (en) 2007-10-24 2011-04-05 T&T Engineering Services Pipe handling apparatus and method
US20100034620A1 (en) * 2007-10-24 2010-02-11 T&T Engineering Services Telescoping jack for a gripper assembly
US20100032213A1 (en) * 2007-10-24 2010-02-11 T&T Engineering Services Apparatus and method for pre-loading of a main rotating structural member
US8419335B1 (en) 2007-10-24 2013-04-16 T&T Engineering Services, Inc. Pipe handling apparatus with stab frame stiffening
US20100034619A1 (en) * 2007-10-24 2010-02-11 T&T Engineering Services Header structure for a pipe handling apparatus
US9194193B1 (en) 2007-10-24 2015-11-24 T&T Engineering Services, Inc. Pipe handling apparatus and method
US20090232624A1 (en) * 2007-10-24 2009-09-17 T&T Engineering Services Pipe handling apparatus with arm stiffening
US7946795B2 (en) * 2007-10-24 2011-05-24 T & T Engineering Services, Inc. Telescoping jack for a gripper assembly
US7980802B2 (en) 2007-10-24 2011-07-19 T&T Engineering Services Pipe handling apparatus with arm stiffening
US8128332B2 (en) 2007-10-24 2012-03-06 T & T Engineering Services, Inc. Header structure for a pipe handling apparatus
US8469648B2 (en) 2007-10-24 2013-06-25 T&T Engineering Services Apparatus and method for pre-loading of a main rotating structural member
US8192129B1 (en) 2007-10-24 2012-06-05 T&T Engineering Services, Inc. Pipe handling boom pretensioning apparatus
US8393844B2 (en) 2007-10-24 2013-03-12 T&T Engineering Services, Inc. Header structure for a pipe handling apparatus
US9500049B1 (en) 2008-12-11 2016-11-22 Schlumberger Technology Corporation Grip and vertical stab apparatus and method
US8408334B1 (en) 2008-12-11 2013-04-02 T&T Engineering Services, Inc. Stabbing apparatus and method
US8496238B1 (en) 2009-01-26 2013-07-30 T&T Engineering Services, Inc. Tubular gripping apparatus with locking mechanism
US8646522B1 (en) 2009-01-26 2014-02-11 T&T Engineering Services, Inc. Method of gripping a tubular with a tubular gripping mechanism
US20100187740A1 (en) * 2009-01-26 2010-07-29 T&T Engineering Services Pipe gripping apparatus
US8474806B2 (en) 2009-01-26 2013-07-02 T&T Engineering Services, Inc. Pipe gripping apparatus
US8371790B2 (en) 2009-03-12 2013-02-12 T&T Engineering Services, Inc. Derrickless tubular servicing system and method
US20100230166A1 (en) * 2009-03-12 2010-09-16 T&T Engineering Services Derrickless tubular servicing system and method
US20100254784A1 (en) * 2009-04-03 2010-10-07 T & T Engineering Services Raise-assist and smart energy system for a pipe handling apparatus
US8172497B2 (en) 2009-04-03 2012-05-08 T & T Engineering Services Raise-assist and smart energy system for a pipe handling apparatus
US8876452B2 (en) 2009-04-03 2014-11-04 T&T Engineering Services, Inc. Raise-assist and smart energy system for a pipe handling apparatus
US9556688B2 (en) 2009-04-03 2017-01-31 Schlumberger Technology Corporation Raise-assist and smart energy system for a pipe handling apparatus
US9556689B2 (en) 2009-05-20 2017-01-31 Schlumberger Technology Corporation Alignment apparatus and method for a boom of a pipe handling system
US8192128B2 (en) 2009-05-20 2012-06-05 T&T Engineering Services, Inc. Alignment apparatus and method for a boom of a pipe handling system
US8905699B2 (en) 2009-05-20 2014-12-09 T&T Engineering Services, Inc. Alignment apparatus and method for a boom of a pipe handling system
US20130098773A1 (en) * 2010-06-28 2013-04-25 Rio Tinto Alcan International Limited Device for extracting short-circuiting wedges designed for switching in an electrolysis cell for the production of aluminum
US9371594B2 (en) * 2010-06-28 2016-06-21 Fives Ecl Device for extracting short-circuiting wedges designed for switching in an electrolysis cell for the production of aluminum
US20120267586A1 (en) * 2011-04-22 2012-10-25 Joseph Andrew Brown Puller for concrete form stakes
US9091128B1 (en) 2011-11-18 2015-07-28 T&T Engineering Services, Inc. Drill floor mountable automated pipe racking system
US9945193B1 (en) 2011-11-18 2018-04-17 Schlumberger Technology Corporation Drill floor mountable automated pipe racking system
US9038712B1 (en) * 2012-02-24 2015-05-26 Triple J Technologies, Llc Tubular lifting apparatus
US9476267B2 (en) 2013-03-15 2016-10-25 T&T Engineering Services, Inc. System and method for raising and lowering a drill floor mountable automated pipe racking system
US10015937B2 (en) * 2016-08-22 2018-07-10 Christian Lane Maxwell Tree, stump and post puller
US10136590B2 (en) * 2016-08-22 2018-11-27 Christian Lane Maxwell Tree, stump and post puller

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