CA2512171A1 - Power tong with linear camming surfaces - Google Patents

Power tong with linear camming surfaces Download PDF

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Publication number
CA2512171A1
CA2512171A1 CA002512171A CA2512171A CA2512171A1 CA 2512171 A1 CA2512171 A1 CA 2512171A1 CA 002512171 A CA002512171 A CA 002512171A CA 2512171 A CA2512171 A CA 2512171A CA 2512171 A1 CA2512171 A1 CA 2512171A1
Authority
CA
Canada
Prior art keywords
camming surface
jaws
camming surfaces
power tong
primary
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.)
Granted
Application number
CA002512171A
Other languages
French (fr)
Other versions
CA2512171C (en
Inventor
Murray Kathan
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA002512171A priority Critical patent/CA2512171C/en
Publication of CA2512171A1 publication Critical patent/CA2512171A1/en
Application granted granted Critical
Publication of CA2512171C publication Critical patent/CA2512171C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • E21B19/16—Connecting or disconnecting pipe couplings or joints
    • E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
    • E21B19/164—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe motor actuated

Abstract

In a pivoting jaw power tong, each primary camming surface of the rotary gear has a substantially linear rather than curved configuration. Each primary camming surface forms an acute angle with a radial line extending from the rotary gear centerline to the point where the primary camming surface transitions to its associated neutral recess. Accordingly, the radial distance to a point on any of the primary camming surfaces reduces linearly with increased distance from the neutral recess. Rotation of the rotary gear in either direction away from the neutral position thus results in a linearly progressive reduction in the distance from the center of rotation to the points where the pivoting jaws' cam followers contact the camming surfaces, thus increasing the force exerted by the dies of the jaws upon a tubular disposed within the jaws. This camming surface geometry allows the power tong to automatically adjust for wear in the mechanism such that the contact force between the rollers and the camming surfaces, and the gripping force applied by the dies, will be substantially uniform.
CA002512171A 2004-07-16 2005-07-14 Power tong with linear camming surfaces Expired - Fee Related CA2512171C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002512171A CA2512171C (en) 2004-07-16 2005-07-14 Power tong with linear camming surfaces

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA2,475,162 2004-07-16
CA2475162 2004-07-16
CA002512171A CA2512171C (en) 2004-07-16 2005-07-14 Power tong with linear camming surfaces

Publications (2)

Publication Number Publication Date
CA2512171A1 true CA2512171A1 (en) 2006-01-16
CA2512171C CA2512171C (en) 2008-11-18

Family

ID=35598036

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002512171A Expired - Fee Related CA2512171C (en) 2004-07-16 2005-07-14 Power tong with linear camming surfaces

Country Status (2)

Country Link
US (1) US6988428B1 (en)
CA (1) CA2512171C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009132428A1 (en) * 2008-04-30 2009-11-05 Mccoy Corporation Reduced weight power tong for turning pipe

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080022811A1 (en) * 2006-06-30 2008-01-31 Murray Kathan Power tong having cam followers with sliding contact surfaces
BRPI0808419B1 (en) 2007-02-23 2017-12-05 Frank's International, Llc METHOD AND APPARATUS FOR FORMING TUBULAR CONNECTIONS
AU2008229630B2 (en) * 2007-03-22 2011-03-10 Bruce William Haines Drilling coupling break-out system
NO328860B1 (en) * 2007-11-01 2010-05-31 Nat Oilwell Varco Norway As Power pliers
US20090272233A1 (en) * 2008-05-01 2009-11-05 Clint Musemeche Tong Unit Having Multi-Jaw Assembly Gripping System
CA2706500C (en) * 2010-06-07 2017-09-19 Kurt R. Feigel, Jr. Compact power tong
BR112014007449B1 (en) 2011-09-29 2020-11-24 National Oilwell Varco Norway As TIGHTENING SYSTEM FOR MAKING AND BREAKING THREADED CONNECTIONS
US9388646B2 (en) * 2013-03-14 2016-07-12 Vermilion River Tool & Equipment Company, Inc. Double curved spider gripping die
CN204920850U (en) * 2015-07-30 2015-12-30 盐城特达钻采设备有限公司 Two gate safety arrangement that open door of opening type hydraulic power pincers
KR102102550B1 (en) 2015-11-30 2020-04-21 빅톨릭 컴패니 Cam type home processing machine
US11898628B2 (en) 2015-11-30 2024-02-13 Victaulic Company Cam grooving machine
US10525516B2 (en) * 2017-05-03 2020-01-07 Victaulic Company Cam grooving machine with cam stop surfaces
US10960450B2 (en) 2017-12-19 2021-03-30 Victaulic Company Pipe grooving device
CN114401803A (en) 2019-08-21 2022-04-26 唯特利公司 Pipe slotting device with flaring cup
US11759839B2 (en) 2020-09-24 2023-09-19 Victaulic Company Pipe grooving device
US20230203899A1 (en) * 2021-12-29 2023-06-29 Starr Investment Properties, LLC Method and Apparatus for Improving Performance and Range of Conventional Power Tongs

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350062A (en) 1979-01-26 1982-09-21 Farr Oil Tool, Inc. Power tong
US4250773A (en) 1979-04-24 1981-02-17 Joy Manufacturing Company Rotary tong incorporating interchangeable jaws for drill pipe and casing
US4273010A (en) 1979-07-31 1981-06-16 Farr Garth M Power tong
US4437363A (en) 1981-06-29 1984-03-20 Joy Manufacturing Company Dual camming action jaw assembly and power tong
US4445402A (en) 1982-02-25 1984-05-01 Farr Oil Tool, Inc. Power tong and back-up tong assembly
US4827808A (en) 1986-09-26 1989-05-09 Cooper Industries, Inc. Rotor assembly for power tong
US5819604A (en) 1996-10-11 1998-10-13 Buck; David A. Interlocking jaw power tongs
US5904075A (en) * 1996-10-11 1999-05-18 Buck; David A. Interlocking jaw power tongs
GB2321866A (en) * 1997-02-07 1998-08-12 Weatherford Lamb Jaw unit for use in a tong
US6619160B1 (en) 2002-05-03 2003-09-16 David A. Buck Sliding jaw adaptor for pivoting jaw power tong

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009132428A1 (en) * 2008-04-30 2009-11-05 Mccoy Corporation Reduced weight power tong for turning pipe
US8453541B2 (en) 2008-04-30 2013-06-04 Mccoy Corporation Reduced weight power tong for turning pipe

Also Published As

Publication number Publication date
CA2512171C (en) 2008-11-18
US20060011017A1 (en) 2006-01-19
US6988428B1 (en) 2006-01-24

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130716