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CA2541339A1 - Drive shaft for motor - Google Patents

Drive shaft for motor Download PDF

Info

Publication number
CA2541339A1
CA2541339A1 CA 2541339 CA2541339A CA2541339A1 CA 2541339 A1 CA2541339 A1 CA 2541339A1 CA 2541339 CA2541339 CA 2541339 CA 2541339 A CA2541339 A CA 2541339A CA 2541339 A1 CA2541339 A1 CA 2541339A1
Authority
CA
Canada
Prior art keywords
shaft
drive
contact surface
housing
central shaft
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
CA 2541339
Other languages
French (fr)
Other versions
CA2541339C (en
Inventor
Orren Johnson
Alexander Whyte
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.)
Wenzel Downhole Tools ULC
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 CA2541339A priority Critical patent/CA2541339C/en
Publication of CA2541339A1 publication Critical patent/CA2541339A1/en
Application granted granted Critical
Publication of CA2541339C publication Critical patent/CA2541339C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • 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
    • E21B4/02—Fluid rotary type drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

An improved drive shaft for a motor having a central shaft, end housings, a ball and socket engagement to facilitate omni-directional movement between the centra l shaft and the end housings and drive keys to transmit torque between the central shaft and end housings with each end housing having planar drive key contact faces. The improvement lies in the drive keys, each of the drive keys having a shaft contact surface formed as a radius from a centre point and a planar housing contact surface longer than the drive key contact face of the end housing that the housing contact surface engages.

Claims (4)

1. A drive shaft for a motor having a central shaft, end housings, a ball and socket engagement to facilitate omni-directional movement between the central shaft and the end housings and drive keys to transmit torque between the central shaft and end housings, each end housing having planar drive key contact faces, the improvement comprising:
each of the drive keys having a shaft contact surface formed as a radius from a centre point;
a planar housing contact surface longer than the drive key contact face of the end housing that the housing contact surface engages.
2. The drive shaft as defined in Claim 1, wherein the centre point for the radius of the shaft contact surface is positioned past the housing contact surface, such that the radius is greater than a depth of the drive key.
3. The drive shaft as defined in Claim 2, wherein the length of the housing contact surface exceeds 2 times the depth of the drive key between the shaft contact surface and the housing contact surface.
4. The drive shaft as defined in Claim 2, wherein the shaft contact surface contacts a web on the central shaft, the depth of the web being greater than two thirds the depth of the drive key.
CA2541339A 2006-03-28 2006-03-28 Drive shaft for motor Active CA2541339C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2541339A CA2541339C (en) 2006-03-28 2006-03-28 Drive shaft for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2541339A CA2541339C (en) 2006-03-28 2006-03-28 Drive shaft for motor

Publications (2)

Publication Number Publication Date
CA2541339A1 true CA2541339A1 (en) 2007-09-28
CA2541339C CA2541339C (en) 2012-05-29

Family

ID=38561860

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2541339A Active CA2541339C (en) 2006-03-28 2006-03-28 Drive shaft for motor

Country Status (1)

Country Link
CA (1) CA2541339C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033917B2 (en) 2008-04-30 2011-10-11 National Oilwell Varco, L.P. Drive shaft assembly for a downhole motor
WO2014126774A1 (en) * 2013-02-13 2014-08-21 National Oilwell Varco, L.P. Driveshaft assembly for a downhole motor
US9382950B2 (en) 2013-08-15 2016-07-05 National Oilwell Varco, L.P. Systems and methods for increasing the life of downhole driveshaft assemblies
US9915106B2 (en) 2013-03-15 2018-03-13 Smith International, Inc. U-joint for a downhole motor drive shaft

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9404527B2 (en) 2013-04-09 2016-08-02 National Oilwell Varco, L.P Drive shaft assembly for a downhole motor
US10975623B2 (en) 2016-02-02 2021-04-13 Halliburton Energy Services, Inc. High torque constant velocity joint for downhole drilling power transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033917B2 (en) 2008-04-30 2011-10-11 National Oilwell Varco, L.P. Drive shaft assembly for a downhole motor
WO2014126774A1 (en) * 2013-02-13 2014-08-21 National Oilwell Varco, L.P. Driveshaft assembly for a downhole motor
US9915106B2 (en) 2013-03-15 2018-03-13 Smith International, Inc. U-joint for a downhole motor drive shaft
US9382950B2 (en) 2013-08-15 2016-07-05 National Oilwell Varco, L.P. Systems and methods for increasing the life of downhole driveshaft assemblies

Also Published As

Publication number Publication date
CA2541339C (en) 2012-05-29

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