US2946578A - Excavator apparatus having stepper type advancing means - Google Patents
Excavator apparatus having stepper type advancing means Download PDFInfo
- Publication number
- US2946578A US2946578A US642135A US64213557A US2946578A US 2946578 A US2946578 A US 2946578A US 642135 A US642135 A US 642135A US 64213557 A US64213557 A US 64213557A US 2946578 A US2946578 A US 2946578A
- Authority
- US
- United States
- Prior art keywords
- advancing means
- july
- type advancing
- stepper type
- smaele
- 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
Links
Images
Classifications
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/18—Anchoring or feeding in the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1093—Devices for supporting, advancing or orientating the machine or the tool-carrier
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Replacement Of Web Rolls (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
July 26, 1960 A. DE sMAl-:LE
ExcAvAToR APPARATUS HAVING STEPPER TYPE ADvANcING MEANS Filed Feb. 25, 1957 20 Sheets-Sheet 1 Waag/6, SP s A. DE sMAELE 2,946,578 ExcAvAToP APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 20 Sheets-Sheet 2 July 26, 1960 Filed Feb. 25, 1957 alberte Jmcule,
July 26,'1960 A. DE sMAELE 2,946,578
ExcAvAToR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS Filed Feb. 25, 1957 2O Sheets-Sheet 3 185 FIG 2 0a 1" 108 II a Ul 405 W' Il 43e JNVENTOR. albert enwoele.
July 26, 1960 A. `DE sMAELE EXCAVATOR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 2O Sheets-Sheet 4 Filed Feb. 25, 1957 'I l so was Boa
INVENToR. Zlbert e/Jmaele,
BY W 9s p July 26, 1960 A. DE sMAELE EXCAVATOR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 2O Sheets-Sheet 5 Filed Feb. 25, 1957 INVENTOR. Zwart 'maee,
July 26, 1960 f A. DE sMAELE EXCAVATOR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 2O Sheets-Sheet 6 Filed Feb. 25, 1957 INVENToR. alberte 'nzaele,
/4TTYJ July 26, 1960 A. DE sMAELE EXCAVATOR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 20 Sheets-Sheet 7 Filed Feb. 25, 1957 mVENToR. dlbertemaele,
July 26, 1960 A. DE sMAELE 2,946,578
ExcAvAToR APPARATUS HAVING STEPPER .TYPE ADvANcING MEANS Filed Feb. 25, 1957 2o sneetssneet e ihnen/iol: albert Be/J'mal,
July 26, 1960 A. DE sMAELE 2,946,578
ExcAvAToR APPARATUS HAVING STEPPER TYPE ADvANcING MEANS v Filed Feb. 25, 1957 20 Sheets-Sheet 9 xm 4040 1051 1051 "3a "f6 1039/1052 1050 1w 2510.
1041 o5 |057 4067 245 243 046 1056 4058 1068 140 M940 zman M5 052 4065 4050 '1060 Fi G 1 '1048 147 IN VEN TOR. lbertedmaee,
Kaw M July 26, 1960 A. DE sMAELE EXCAVATOR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 20 Sheets-Sheet 10 Filed Feb. 25, 1957 L ,hz/anton albert emale.
July 26, 1960 A. DE sMAELE ExcAvAToR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 2O Sheets-Sheet 11 Filed Feb. 25, 1957 mmm ratori July 26, 1960 A. DE sMAELE 2,946,578
EXCAVATOR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS Filed Feb. 25, 1957 20 Sheets-Sheet l? FIG. I6
2.04 (307)/5' (soakzoa CD/WB 47 A4a (304.) 415 447 /46 4 41 E 45j 4 g INVENTOR. albe] 'e Lglllalf mwa/224% July 26, 1960 1 A. DE sMAr-:LE
ExcAvAToR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 20 Sheets-Sheet 13 m 3P Er ,i1/venian CLLber De Smale,
July 26, 1960 A. DE sMAELE EXCAVATOR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 2O Sheets-#Sheet 14 Filed Feb, 25, 1957 1N V EN TOR. dlberefmaele,
BY W @vim 20 Sheets-Sheet 15 @Dro Q35 m A. DE SMAELE TYPE ADVANCING MEANS EXCAVATOR APPARATUS HAVING STEPPER July 26, 1960 Filed Feb. 25, 1957 werool: dLberelLae/, r mi 9v @k y mi July 26, 1960 A. DE SMAELE 2,946,578
EXCAVATOR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS July 26, 1960 l A. DE sMAELE ExcAvAToRl APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 2O Sheets-Sheet 17 Filed Feb. 25, 1957 own; *wo* A 33,# lili-- III-- -5---- 33 M o 53 33k imo* die* dm3* 2.8) l 1 :3\ 3a. s3 n 1 z Si 53 m3 :S 8m
5% c .mwm 5m .man 3m d?? @muxa wm/TMW Y ,r/venan CLLbereJmLw/Le,
July 26, 1960 A. DE sMAELE EXCAVATOR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 20 Sheets-Sheet 18 @o3 B3 m3* $2. 28. $3 :be 22 22 ,uu/'entor ZLberteJmaP/Ze,
NN di July 26, 1960 A. DE sMAELE EXCAVATGR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 2O Sheets-Sheet 19 Filed Feb. 25, 1957 July 26, 1960 A. DE sMAELE ExcAvAToR APPARATUS HAVING STEPPER TYPE ADVANCING MEANS 2O Sheets-Sheet 20 Filed Feb. 25, 1957 falen/ton Cdberbe 'naele,
j?, Wwvw
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE2946578X | 1952-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2946578A true US2946578A (en) | 1960-07-26 |
Family
ID=3896185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US642135A Expired - Lifetime US2946578A (en) | 1952-08-04 | 1957-02-25 | Excavator apparatus having stepper type advancing means |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2946578A (en) |
Cited By (51)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3105561A (en) * | 1960-09-13 | 1963-10-01 | Jersey Prod Res Co | Hydraulic actuated drill collar |
| US3180436A (en) * | 1961-05-01 | 1965-04-27 | Jersey Prod Res Co | Borehole drilling system |
| US3185225A (en) * | 1962-05-04 | 1965-05-25 | Wolstan C Ginies Entpr Proprie | Feeding apparatus for down hole drilling device |
| US3190376A (en) * | 1962-01-30 | 1965-06-22 | Eugene A Christensen | Boring head |
| US3205014A (en) * | 1960-12-27 | 1965-09-07 | Terra Form Footing Co | Rotary tunneling machine having off-set head |
| US3232670A (en) * | 1964-08-07 | 1966-02-01 | Robbins & Assoc James S | Tunnel-boring rotary head with adjustably mounted gauge cutters |
| US3325218A (en) * | 1966-11-30 | 1967-06-13 | Alkirk Inc | Earth boring machine |
| US3797589A (en) * | 1973-04-16 | 1974-03-19 | Smith International | Self guiding force applicator |
| US3799277A (en) * | 1973-04-16 | 1974-03-26 | Smith International | Force applicator |
| US3827512A (en) * | 1973-01-22 | 1974-08-06 | Continental Oil Co | Anchoring and pressuring apparatus for a drill |
| US3881776A (en) * | 1973-11-23 | 1975-05-06 | Us Navy | Vermiculating polytoroidal thruster |
| US3935910A (en) * | 1973-06-25 | 1976-02-03 | Compagnie Francaise Des Petroles | Method and apparatus for moulding protective tubing simultaneously with bore hole drilling |
| US3963080A (en) * | 1975-01-29 | 1976-06-15 | Dresser Industries, Inc. | Tunneling machine for boring a side drift |
| US3997008A (en) * | 1974-09-13 | 1976-12-14 | Smith International, Inc. | Drill director |
| FR2370163A1 (en) * | 1976-11-05 | 1978-06-02 | Johansson Sven Halvor | DEVICE FOR IMMOBILIZING AND MOVING A LOAD IN A DRILL HOLE BY PRESSING ON THE LATERAL SURFACE OF THE LATTER |
| US4095655A (en) * | 1975-10-14 | 1978-06-20 | Still William L | Earth penetration |
| US4120368A (en) * | 1976-11-05 | 1978-10-17 | Sven Halvor Johansson | Supplying motive fluid to below ground tool drive from a pressurized bore hole |
| DE2809951A1 (en) * | 1978-03-08 | 1979-09-13 | Demag Ag | Tunnelling machine rotary cutting head - has radial segments bolted together and to drive member, using interlocking flanges |
| FR2456830A1 (en) * | 1979-05-18 | 1980-12-12 | Salzgitter Maschinen Ag | TERRESTRIAL DRILLING DEVICE WITH SUPPORT IN THE DRILLING HOLE |
| FR2456832A1 (en) * | 1979-05-18 | 1980-12-12 | Salzgitter Maschinen Ag | CENTERING AND GUIDING DEVICE FOR ROD TRAINING OF LAND DRILLING EQUIPMENT |
| FR2484599A1 (en) * | 1980-06-13 | 1981-12-18 | Coopetanche Sa | Milling machine for removing asperities in pipe bore - uses jack to move motor and cutting head w.r.t. tubular chassis secured by inflated girdles |
| US4432667A (en) * | 1979-06-16 | 1984-02-21 | Marcon International Limited | Insulation of tunnel linings |
| US4438820A (en) * | 1981-11-16 | 1984-03-27 | Gibson Paul N | Grade monitoring and steering apparatus |
| EP0110182A2 (en) * | 1982-11-26 | 1984-06-13 | Advanced Drilling Corporation | Down-hole drilling apparatus |
| FR2557055A1 (en) * | 1983-12-27 | 1985-06-28 | Inspectronic | Appliance for transport and positioning in a conduit |
| US4686653A (en) * | 1983-12-09 | 1987-08-11 | Societe Nationale Elf Aquitaine (Production) | Method and device for making geophysical measurements within a wellbore |
| US4700788A (en) * | 1985-05-06 | 1987-10-20 | Shell Oil Company | Directional drilling pipelay |
| EP0767289A1 (en) * | 1995-10-02 | 1997-04-09 | Atlas Copco Robbins Inc. | Inflatable gripper assembly for rock boring machine |
| US6003606A (en) * | 1995-08-22 | 1999-12-21 | Western Well Tool, Inc. | Puller-thruster downhole tool |
| US6230813B1 (en) | 1995-08-22 | 2001-05-15 | Western Well Tool, Inc. | Method of moving a puller-thruster downhole tool |
| US6347674B1 (en) | 1998-12-18 | 2002-02-19 | Western Well Tool, Inc. | Electrically sequenced tractor |
| US6431291B1 (en) | 2001-06-14 | 2002-08-13 | Western Well Tool, Inc. | Packerfoot with bladder assembly having reduced likelihood of bladder delamination |
| US6464003B2 (en) | 2000-05-18 | 2002-10-15 | Western Well Tool, Inc. | Gripper assembly for downhole tractors |
| US20030151298A1 (en) * | 2001-11-20 | 2003-08-14 | Compagnie Du Sol | Equipment for drilling vertical boreholes |
| US6679341B2 (en) | 2000-12-01 | 2004-01-20 | Western Well Tool, Inc. | Tractor with improved valve system |
| US6715559B2 (en) | 2001-12-03 | 2004-04-06 | Western Well Tool, Inc. | Gripper assembly for downhole tractors |
| US20040168828A1 (en) * | 2003-02-10 | 2004-09-02 | Mock Philip W. | Tractor with improved valve system |
| US20040226747A1 (en) * | 2003-05-15 | 2004-11-18 | Stegmaier Shawn C. | Self-penetrating soil exploration device and associated methods |
| US20050247488A1 (en) * | 2004-03-17 | 2005-11-10 | Mock Philip W | Roller link toggle gripper and downhole tractor |
| US7055625B1 (en) * | 2003-01-27 | 2006-06-06 | Honeybee Robotics, Ltd. | Self-propelled instrumented deep drilling system |
| US20080053663A1 (en) * | 2006-08-24 | 2008-03-06 | Western Well Tool, Inc. | Downhole tool with turbine-powered motor |
| US20080217024A1 (en) * | 2006-08-24 | 2008-09-11 | Western Well Tool, Inc. | Downhole tool with closed loop power systems |
| US7624808B2 (en) | 2006-03-13 | 2009-12-01 | Western Well Tool, Inc. | Expandable ramp gripper |
| US7748476B2 (en) | 2006-11-14 | 2010-07-06 | Wwt International, Inc. | Variable linkage assisted gripper |
| US20100307832A1 (en) * | 2000-12-01 | 2010-12-09 | Western Well Tool, Inc. | Tractor with improved valve system |
| US20110073300A1 (en) * | 2009-09-29 | 2011-03-31 | Mock Philip W | Methods and apparatuses for inhibiting rotational misalignment of assemblies in expandable well tools |
| WO2011058307A2 (en) | 2009-11-10 | 2011-05-19 | National Oilwell Varco L.P. | Downhole tractor |
| US9447648B2 (en) | 2011-10-28 | 2016-09-20 | Wwt North America Holdings, Inc | High expansion or dual link gripper |
| US9488020B2 (en) | 2014-01-27 | 2016-11-08 | Wwt North America Holdings, Inc. | Eccentric linkage gripper |
| EP3186465A4 (en) * | 2014-08-26 | 2018-05-30 | Baker Hughes Incorporated | Downhole motor for extended reach applications |
| US20200338943A1 (en) * | 2019-04-25 | 2020-10-29 | United States Of America As Represented By The Secretary Of The Navy | Unmanned Undersand Vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US556718A (en) * | 1896-03-17 | Electrical apparatus for drilling wells | ||
| US1403530A (en) * | 1920-06-28 | 1922-01-17 | Whitaker Douglas | Tunneling machine |
| US1462997A (en) * | 1919-07-21 | 1923-07-24 | Tunnel & Sewer Machine Enginee | Tunneling machine |
| US1511957A (en) * | 1921-11-14 | 1924-10-14 | Theophil J Freda | Horizontal earth-boring machine |
| US2699328A (en) * | 1949-04-02 | 1955-01-11 | Union Carbide & Carbon Corp | Mining process and system by remote control |
-
1957
- 1957-02-25 US US642135A patent/US2946578A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US556718A (en) * | 1896-03-17 | Electrical apparatus for drilling wells | ||
| US1462997A (en) * | 1919-07-21 | 1923-07-24 | Tunnel & Sewer Machine Enginee | Tunneling machine |
| US1403530A (en) * | 1920-06-28 | 1922-01-17 | Whitaker Douglas | Tunneling machine |
| US1511957A (en) * | 1921-11-14 | 1924-10-14 | Theophil J Freda | Horizontal earth-boring machine |
| US2699328A (en) * | 1949-04-02 | 1955-01-11 | Union Carbide & Carbon Corp | Mining process and system by remote control |
Cited By (118)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3105561A (en) * | 1960-09-13 | 1963-10-01 | Jersey Prod Res Co | Hydraulic actuated drill collar |
| US3205014A (en) * | 1960-12-27 | 1965-09-07 | Terra Form Footing Co | Rotary tunneling machine having off-set head |
| US3180436A (en) * | 1961-05-01 | 1965-04-27 | Jersey Prod Res Co | Borehole drilling system |
| US3190376A (en) * | 1962-01-30 | 1965-06-22 | Eugene A Christensen | Boring head |
| US3185225A (en) * | 1962-05-04 | 1965-05-25 | Wolstan C Ginies Entpr Proprie | Feeding apparatus for down hole drilling device |
| US3232670A (en) * | 1964-08-07 | 1966-02-01 | Robbins & Assoc James S | Tunnel-boring rotary head with adjustably mounted gauge cutters |
| US3325218A (en) * | 1966-11-30 | 1967-06-13 | Alkirk Inc | Earth boring machine |
| US3827512A (en) * | 1973-01-22 | 1974-08-06 | Continental Oil Co | Anchoring and pressuring apparatus for a drill |
| US3797589A (en) * | 1973-04-16 | 1974-03-19 | Smith International | Self guiding force applicator |
| US3799277A (en) * | 1973-04-16 | 1974-03-26 | Smith International | Force applicator |
| US3935910A (en) * | 1973-06-25 | 1976-02-03 | Compagnie Francaise Des Petroles | Method and apparatus for moulding protective tubing simultaneously with bore hole drilling |
| US3881776A (en) * | 1973-11-23 | 1975-05-06 | Us Navy | Vermiculating polytoroidal thruster |
| US3997008A (en) * | 1974-09-13 | 1976-12-14 | Smith International, Inc. | Drill director |
| US3963080A (en) * | 1975-01-29 | 1976-06-15 | Dresser Industries, Inc. | Tunneling machine for boring a side drift |
| US4095655A (en) * | 1975-10-14 | 1978-06-20 | Still William L | Earth penetration |
| FR2370163A1 (en) * | 1976-11-05 | 1978-06-02 | Johansson Sven Halvor | DEVICE FOR IMMOBILIZING AND MOVING A LOAD IN A DRILL HOLE BY PRESSING ON THE LATERAL SURFACE OF THE LATTER |
| US4120368A (en) * | 1976-11-05 | 1978-10-17 | Sven Halvor Johansson | Supplying motive fluid to below ground tool drive from a pressurized bore hole |
| DE2809951A1 (en) * | 1978-03-08 | 1979-09-13 | Demag Ag | Tunnelling machine rotary cutting head - has radial segments bolted together and to drive member, using interlocking flanges |
| FR2456830A1 (en) * | 1979-05-18 | 1980-12-12 | Salzgitter Maschinen Ag | TERRESTRIAL DRILLING DEVICE WITH SUPPORT IN THE DRILLING HOLE |
| FR2456832A1 (en) * | 1979-05-18 | 1980-12-12 | Salzgitter Maschinen Ag | CENTERING AND GUIDING DEVICE FOR ROD TRAINING OF LAND DRILLING EQUIPMENT |
| US4432667A (en) * | 1979-06-16 | 1984-02-21 | Marcon International Limited | Insulation of tunnel linings |
| FR2484599A1 (en) * | 1980-06-13 | 1981-12-18 | Coopetanche Sa | Milling machine for removing asperities in pipe bore - uses jack to move motor and cutting head w.r.t. tubular chassis secured by inflated girdles |
| US4438820A (en) * | 1981-11-16 | 1984-03-27 | Gibson Paul N | Grade monitoring and steering apparatus |
| EP0110182A2 (en) * | 1982-11-26 | 1984-06-13 | Advanced Drilling Corporation | Down-hole drilling apparatus |
| EP0110182A3 (en) * | 1982-11-26 | 1985-03-20 | Advanced Drilling Corporation | Down-hole drilling apparatus |
| US4686653A (en) * | 1983-12-09 | 1987-08-11 | Societe Nationale Elf Aquitaine (Production) | Method and device for making geophysical measurements within a wellbore |
| FR2557055A1 (en) * | 1983-12-27 | 1985-06-28 | Inspectronic | Appliance for transport and positioning in a conduit |
| US4700788A (en) * | 1985-05-06 | 1987-10-20 | Shell Oil Company | Directional drilling pipelay |
| US6003606A (en) * | 1995-08-22 | 1999-12-21 | Western Well Tool, Inc. | Puller-thruster downhole tool |
| US6230813B1 (en) | 1995-08-22 | 2001-05-15 | Western Well Tool, Inc. | Method of moving a puller-thruster downhole tool |
| US6286592B1 (en) | 1995-08-22 | 2001-09-11 | Western Well Tool, Inc. | Puller-thruster downhole tool |
| US7273109B2 (en) | 1995-08-22 | 2007-09-25 | Western Well Tool | Puller-thruster downhole tool |
| US20070000697A1 (en) * | 1995-08-22 | 2007-01-04 | Moore Norman B | Puller-thruster downhole tool |
| US7156181B2 (en) * | 1995-08-22 | 2007-01-02 | Western Well Tool, Inc. | Puller-thruster downhole tool |
| US6758279B2 (en) | 1995-08-22 | 2004-07-06 | Western Well Tool, Inc. | Puller-thruster downhole tool |
| US6601652B1 (en) | 1995-08-22 | 2003-08-05 | Western Well Tool, Inc. | Puller-thruster downhole tool |
| US7059417B2 (en) | 1995-08-22 | 2006-06-13 | Western Well Tool, Inc. | Puller-thruster downhole tool |
| US20060108151A1 (en) * | 1995-08-22 | 2006-05-25 | Moore Norman B | Puller-thruster downhole tool |
| US20040182580A1 (en) * | 1995-08-22 | 2004-09-23 | Moore Norman Bruce | Puller-thruster downhole tool |
| US5649745A (en) * | 1995-10-02 | 1997-07-22 | Atlas Copco Robbins Inc. | Inflatable gripper assembly for rock boring machine |
| EP0767289A1 (en) * | 1995-10-02 | 1997-04-09 | Atlas Copco Robbins Inc. | Inflatable gripper assembly for rock boring machine |
| US7080701B2 (en) | 1998-12-18 | 2006-07-25 | Western Well Tool, Inc. | Electrically sequenced tractor |
| US20050252686A1 (en) * | 1998-12-18 | 2005-11-17 | Duane Bloom | Electrically sequenced tractor |
| US7174974B2 (en) | 1998-12-18 | 2007-02-13 | Western Well Tool, Inc. | Electrically sequenced tractor |
| US7185716B2 (en) | 1998-12-18 | 2007-03-06 | Western Well Tool, Inc. | Electrically sequenced tractor |
| US20060196694A1 (en) * | 1998-12-18 | 2006-09-07 | Duane Bloom | Electrically sequenced tractor |
| US20060196696A1 (en) * | 1998-12-18 | 2006-09-07 | Duane Bloom | Electrically sequenced tractor |
| US6478097B2 (en) | 1998-12-18 | 2002-11-12 | Western Well Tool, Inc. | Electrically sequenced tractor |
| US20040245018A1 (en) * | 1998-12-18 | 2004-12-09 | Duane Bloom | Electrically sequenced tractor |
| US6347674B1 (en) | 1998-12-18 | 2002-02-19 | Western Well Tool, Inc. | Electrically sequenced tractor |
| US6938708B2 (en) | 1998-12-18 | 2005-09-06 | Western Well Tool, Inc. | Electrically sequenced tractor |
| US6745854B2 (en) | 1998-12-18 | 2004-06-08 | Western Well Tool, Inc. | Electrically sequenced tractor |
| US20050082055A1 (en) * | 2000-02-16 | 2005-04-21 | Duane Bloom | Gripper assembly for downhole tools |
| US7191829B2 (en) * | 2000-02-16 | 2007-03-20 | Western Well Tool, Inc. | Gripper assembly for downhole tools |
| US20070017670A1 (en) * | 2000-02-16 | 2007-01-25 | Duane Bloom | Gripper assembly for downhole tools |
| US7048047B2 (en) | 2000-02-16 | 2006-05-23 | Western Well Tool, Inc. | Gripper assembly for downhole tools |
| US6640894B2 (en) | 2000-02-16 | 2003-11-04 | Western Well Tool, Inc. | Gripper assembly for downhole tools |
| US7275593B2 (en) | 2000-02-16 | 2007-10-02 | Western Well Tool, Inc. | Gripper assembly for downhole tools |
| US20060201716A1 (en) * | 2000-02-16 | 2006-09-14 | Duane Bloom | Gripper assembly for downhole tools |
| US8069917B2 (en) | 2000-05-18 | 2011-12-06 | Wwt International, Inc. | Gripper assembly for downhole tools |
| US7604060B2 (en) | 2000-05-18 | 2009-10-20 | Western Well Tool, Inc. | Gripper assembly for downhole tools |
| US8555963B2 (en) | 2000-05-18 | 2013-10-15 | Wwt International, Inc. | Gripper assembly for downhole tools |
| US8944161B2 (en) | 2000-05-18 | 2015-02-03 | Wwt North America Holdings, Inc. | Gripper assembly for downhole tools |
| US20080078559A1 (en) * | 2000-05-18 | 2008-04-03 | Western Well Tool, Inc. | Griper assembly for downhole tools |
| US9228403B1 (en) | 2000-05-18 | 2016-01-05 | Wwt North America Holdings, Inc. | Gripper assembly for downhole tools |
| US6464003B2 (en) | 2000-05-18 | 2002-10-15 | Western Well Tool, Inc. | Gripper assembly for downhole tractors |
| US9988868B2 (en) | 2000-05-18 | 2018-06-05 | Wwt North America Holdings, Inc. | Gripper assembly for downhole tools |
| US7353886B2 (en) | 2000-12-01 | 2008-04-08 | Western Well Tool, Inc. | Tractor with improved valve system |
| US7607495B2 (en) | 2000-12-01 | 2009-10-27 | Western Well Tool, Inc. | Tractor with improved valve system |
| US8245796B2 (en) | 2000-12-01 | 2012-08-21 | Wwt International, Inc. | Tractor with improved valve system |
| US20100307832A1 (en) * | 2000-12-01 | 2010-12-09 | Western Well Tool, Inc. | Tractor with improved valve system |
| US7188681B2 (en) | 2000-12-01 | 2007-03-13 | Western Well Tool, Inc. | Tractor with improved valve system |
| US7080700B2 (en) | 2000-12-01 | 2006-07-25 | Western Well Tool, Inc. | Tractor with improved valve system |
| US6679341B2 (en) | 2000-12-01 | 2004-01-20 | Western Well Tool, Inc. | Tractor with improved valve system |
| US20070151764A1 (en) * | 2000-12-01 | 2007-07-05 | Duane Bloom | Tractor with improved valve system |
| US20070000693A1 (en) * | 2000-12-01 | 2007-01-04 | Duane Bloom | Tractor with improved valve system |
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