SG44376A1 - Hydrodynamic pump - Google Patents

Hydrodynamic pump

Info

Publication number
SG44376A1
SG44376A1 SG1996000022A SG1996000022A SG44376A1 SG 44376 A1 SG44376 A1 SG 44376A1 SG 1996000022 A SG1996000022 A SG 1996000022A SG 1996000022 A SG1996000022 A SG 1996000022A SG 44376 A1 SG44376 A1 SG 44376A1
Authority
SG
Singapore
Prior art keywords
cylinder
fluid bearing
shaft
dynamic pressure
hydrodynamic
Prior art date
Application number
SG1996000022A
Other languages
English (en)
Inventor
Roy Patrick Crawford
Mats Engwall
Larry Joe Gilliland
Karl Gong
Michel Philippe Robert
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of SG44376A1 publication Critical patent/SG44376A1/en

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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/026—Sliding-contact bearings for exclusively rotary movement for radial load only with helical grooves in the bearing surface to generate hydrodynamic pressure, e.g. herringbone grooves
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1005—Construction relative to lubrication with gas, e.g. air, as lubricant
    • F16C33/101—Details of the bearing surface, e.g. means to generate pressure such as lobes or wedges
    • F16C33/1015—Pressure generating grooves
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/107—Grooves for generating pressure
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • 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
    • F16C2370/00—Apparatus relating to physics, e.g. instruments
    • F16C2370/12—Hard disk drives or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
SG1996000022A 1993-03-25 1994-02-28 Hydrodynamic pump SG44376A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/038,579 US5328270A (en) 1993-03-25 1993-03-25 Hydrodynamic pump

Publications (1)

Publication Number Publication Date
SG44376A1 true SG44376A1 (en) 1997-12-19

Family

ID=21900718

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996000022A SG44376A1 (en) 1993-03-25 1994-02-28 Hydrodynamic pump

Country Status (4)

Country Link
US (1) US5328270A (ja)
EP (1) EP0626684A3 (ja)
JP (1) JPH06300043A (ja)
SG (1) SG44376A1 (ja)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5590003A (en) * 1995-03-08 1996-12-31 Seagate Technology, Inc. Hydrodynamic spindle motor having distributed windings
JPH09192904A (ja) * 1996-01-18 1997-07-29 Toshiba Mach Co Ltd 空気軸受式工作機械
US6730349B2 (en) * 1999-04-19 2004-05-04 Scimed Life Systems, Inc. Mechanical and acoustical suspension coating of medical implants
US6368658B1 (en) * 1999-04-19 2002-04-09 Scimed Life Systems, Inc. Coating medical devices using air suspension
US6336608B1 (en) 2000-02-29 2002-01-08 James Robert Cope Flexible web roller guide assembly with an integral centrifugal pump capability to provide a hydrostatic air bearing function to the roller guides outside supporting surface
US6315452B1 (en) 2000-04-28 2001-11-13 Forrest D. Titcomb Zero static-friction actuator pivot bearing for production disk drives
US20030117906A1 (en) * 2001-12-20 2003-06-26 Rahman Mohamed Mizanur Apparatus and method for optimizing hydrodynamic groove shape
US7239477B2 (en) * 2002-11-05 2007-07-03 Seagate Technology Llc Low profile air-oil hybrid fluid dynamic bearing motor
US7001074B2 (en) * 2003-04-21 2006-02-21 Seagate Technology Llc High pressure barrier to oil loss by diffusion
US20050056303A1 (en) * 2003-09-16 2005-03-17 Wei-Ming Lee Oblique burnish/wipe mechanism for hard drive disk like media
US7234868B2 (en) * 2003-05-07 2007-06-26 Seagate Technology Llc Radial pumping oil seal for fluid dynamic bearing motor
WO2005110858A1 (en) * 2004-04-30 2005-11-24 Senco Products, Inc. Cordless fastener driving tool
US8562222B2 (en) * 2005-06-24 2013-10-22 Seagate Technology Llc Hub and spindle assembly
US7679243B2 (en) * 2005-12-22 2010-03-16 Seagate Technology Llc Motor assembly with multifunctional components
US7843664B2 (en) * 2006-02-09 2010-11-30 Seagate Technology Llc Electrostatic discharge apparatus for hub and spindle assemblies
US8454238B2 (en) * 2006-08-23 2013-06-04 Seagate Technology Llc Spindle regions
JP2025054940A (ja) * 2023-09-27 2025-04-08 株式会社東芝 磁気ディスク装置

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479038A (en) * 1967-10-04 1969-11-18 Ira Leonard Eisner Radial phonograph pickup arm and turntable combination using air bearings
GB1316970A (en) * 1969-08-26 1973-05-16 Coventry Corp Of The City Of Hydrostatic/hydrodynamic shaft bearing arrangements
US4132414A (en) * 1972-02-07 1979-01-02 Jack Dinsdale Gramophone turntable apparatus
NL8204481A (nl) * 1982-11-19 1984-06-18 Philips Nv Luchtlagering.
JPS6026676U (ja) * 1983-07-28 1985-02-22 日本精工株式会社 磁気ディスク記憶装置
CH651362A5 (de) * 1983-08-31 1985-09-13 Bbc Brown Boveri & Cie Selbstpumpendes hydrodynamisches gleitlager.
JPS6138217A (ja) * 1984-07-31 1986-02-24 Mazda Motor Corp 流体軸受の製造方法
JPS6388314A (ja) * 1986-09-30 1988-04-19 Toshiba Corp 動圧空気軸受
NL8602565A (nl) * 1986-10-13 1988-05-02 Philips Nv Lagersysteem met een aktief reservoir tussen twee op axiale afstand van elkaar geplaatste hydrodynamische lagers.
CH672666A5 (ja) * 1986-11-27 1989-12-15 Bbc Brown Boveri & Cie
JPH0781584B2 (ja) * 1987-06-17 1995-08-30 松下電器産業株式会社 軸受装置
US4795275A (en) * 1987-08-12 1989-01-03 Digital Equipment Corporation Hydrodynamic bearing
JPH01167495A (ja) * 1987-12-23 1989-07-03 Hitachi Ltd 真空ポンプ
US4772136A (en) * 1988-02-23 1988-09-20 Carter Donald L Self-filtering apparatus for hydrodynamic bearing gas
JPH0211918A (ja) * 1988-06-29 1990-01-17 Matsushita Electric Ind Co Ltd 動圧型エア軸受装置
JP2804506B2 (ja) * 1989-04-17 1998-09-30 株式会社日立製作所 磁気デイスク装置および軸受構成体
JPH02283914A (ja) * 1989-04-24 1990-11-21 Matsushita Electric Ind Co Ltd 動圧気体軸受け装置
GB2231372B (en) * 1989-05-12 1993-07-21 Bredport Limited Self-acting air bearing spindle for disk drive
JPH0335469A (ja) * 1989-06-30 1991-02-15 Matsushita Electric Ind Co Ltd ディスク駆動装置
US5013947A (en) * 1990-03-16 1991-05-07 Russell Ide Low-profile disk drive motor
JPH044310A (ja) * 1990-04-18 1992-01-08 Matsushita Electric Ind Co Ltd 動圧型気体軸受装置

Also Published As

Publication number Publication date
US5328270A (en) 1994-07-12
EP0626684A3 (en) 1996-01-31
EP0626684A2 (en) 1994-11-30
JPH06300043A (ja) 1994-10-25

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