BR9004870A - Acionador de disco - Google Patents

Acionador de disco

Info

Publication number: BR9004870A
Authority: BR; Brazil
Prior art keywords: disc driver; driver; disc
Prior art date: 1989-11-13

Application number

BR909004870A

Other languages

English (en)

Inventor

Jeffrey S Mcallister

Steven M Johnson

Original Assignee

Hewlett Packard Co

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.)

1989-11-13

Filing date

1990-09-24

Publication date

1991-09-10

1990-09-24 Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co

1991-09-10 Publication of BR9004870A publication Critical patent/BR9004870A/pt

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
- G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/1493—Electro-Magnetic Interference [EMI] or Radio Frequency Interference [RFI] shielding; grounding of static charges
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/40—Protective measures on heads, e.g. against excessive temperature

BR909004870A 1989-11-13 1990-09-24 Acionador de disco BR9004870A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US07/434,656 US4999724A (en)	1989-11-13	1989-11-13	Disk drive having an electrically isolated disk stack

Publications (1)

Publication Number	Publication Date
BR9004870A true BR9004870A (pt)	1991-09-10

Family

ID=23725105

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR909004870A BR9004870A (pt)	1989-11-13	1990-09-24	Acionador de disco

Country Status (6)

Country	Link
US (1)	US4999724A (pt)
EP (1)	EP0427926B1 (pt)
JP (1)	JP2921967B2 (pt)
BR (1)	BR9004870A (pt)
CA (1)	CA2023029C (pt)
DE (1)	DE69022680T2 (pt)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0713086Y2 (ja) *	1989-06-30	1995-03-29	日本ビクター株式会社	磁気ディスク装置
CA2025497C (en) *	1989-09-18	1996-05-28	Masaharu Sugimoto	Magnetic disk storage apparatus
US5142425A (en) *	1990-08-09	1992-08-25	Hewlett-Packard Company	Disk drive in which magnetic head-to-disk capacitive coupling is eliminated
US5270887A (en) *	1991-12-04	1993-12-14	Western Digital Corporation	Compact disk drive head disk assembly with conformable tape seal
US5986852A (en) *	1992-10-19	1999-11-16	International Business Machines Corporation	High capacity, high performance low profile disk drive
US5482497A (en) *	1992-12-30	1996-01-09	International Business Machines Corporation	Method and apparatus for texturing zones of a magnetic disk
JP2553316B2 (ja) *	1993-03-02	1996-11-13	インターナショナル・ビジネス・マシーンズ・コーポレイション	データ記憶ディスク・ドライブ装置
US5485331A (en) *	1993-09-30	1996-01-16	Seagate Technology, Inc.	High resistivity bearing balls for spindle motor isolation
US5729404A (en) *	1993-09-30	1998-03-17	Seagate Technology, Inc.	Disc drive spindle motor with rotor isolation and controlled resistance electrical pathway from disc to ground
US5422768A (en) *	1994-05-31	1995-06-06	Hewlett-Packard Company	Compliant hard disk assembly for a recording/reproducing device
KR0122499B1 (ko) *	1994-10-22	1997-11-20	김광호	하드디스크 드라이브의 신호전달장치
US5724208A (en) *	1996-04-30	1998-03-03	Kabushiki Kaisha Soode Nagano	Hard disc spacer and hard disc clamp
US6343877B1 (en) *	1999-04-15	2002-02-05	Kabushiki Kaisha Sankyo Seiki Seisakusho	Spindle motor
US6396179B2 (en)	2000-05-24	2002-05-28	Seagate Technology Llc	Retractable grounding device for a spindle motor
US6583968B1 (en) *	2001-10-31	2003-06-24	Western Digital Technologies, Inc.	Spindle motor hub having equivalent MR read element bias voltage to mitigate potential between disk and MR read element
US6990727B1 (en) *	2002-10-31	2006-01-31	Western Digital Technologies, Inc.	Method of making disk drives using a frame array with a plurality of disk drive base portions
US7372662B2 (en) *	2003-08-14	2008-05-13	Seagate Technology Llc	Base deck with formed-in-place gaskets and impact dissipation members for a data storage device
DE102006034733A1 (de) *	2006-07-27	2008-01-31	Deutsche Thomson Ohg	Schwingarm-Aktuator für eine optische Abtasteinrichtung
US8092293B2 (en) *	2006-09-13	2012-01-10	Igt	Method and apparatus for tracking play at a roulette table

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4038693A (en) *	1975-09-23	1977-07-26	International Business Machines Corporation	Anti-static magnetic record disk assembly
GB2080996A (en) *	1980-07-24	1982-02-10	Akg Akustische Kino Geraete	Improvements in or relating to pick-ups for playing sound recordings
JPS5774849A (en) *	1980-10-24	1982-05-11	Victor Co Of Japan Ltd	Playback device of disk-like recording medium
JPS5826324A (ja) *	1981-08-11	1983-02-16	Nec Corp	磁気記憶装置
DE3327123C2 (de) *	1982-07-27	1996-07-11	Papst Motoren Gmbh & Co Kg	Antriebsanordnung für signalverarbeitende Geräte
JPS6095776A (ja) *	1983-10-31	1985-05-29	Fujitsu Ltd	磁気ヘツドと円板の接触検出方法
JPS6180656A (ja) *	1984-09-28	1986-04-24	Hitachi Ltd	磁気デイスク装置
GB2166586A (en) *	1984-10-29	1986-05-08	Priam Corp	Grounding arrangement for head disk assembly
JPS63211165A (ja) *	1987-02-27	1988-09-02	Hitachi Ltd	磁気デイスク記憶装置
JPS63237206A (ja) *	1987-03-24	1988-10-03	Nec Corp	磁気デイスク装置
US4800454A (en) *	1987-08-10	1989-01-24	Magnetic Peripherals Inc.	Static charge protection for magnetic thin film data transducers
US4987514A (en) *	1989-02-15	1991-01-22	Hewlett-Packard Company	Method and apparatus for preventing parasitic electrical discharges in magnetic disk drives

1989
- 1989-11-13 US US07/434,656 patent/US4999724A/en not_active Expired - Lifetime
1990
- 1990-08-09 CA CA002023029A patent/CA2023029C/en not_active Expired - Fee Related
- 1990-08-10 DE DE69022680T patent/DE69022680T2/de not_active Expired - Fee Related
- 1990-08-10 EP EP90115384A patent/EP0427926B1/en not_active Expired - Lifetime
- 1990-09-24 BR BR909004870A patent/BR9004870A/pt not_active IP Right Cessation
- 1990-11-13 JP JP2308406A patent/JP2921967B2/ja not_active Expired - Fee Related

Also Published As

Publication number	Publication date
JP2921967B2 (ja)	1999-07-19
CA2023029A1 (en)	1991-05-14
DE69022680D1 (de)	1995-11-02
DE69022680T2 (de)	1996-05-02
EP0427926A2 (en)	1991-05-22
US4999724A (en)	1991-03-12
CA2023029C (en)	1994-09-20
JPH03173969A (ja)	1991-07-29
EP0427926B1 (en)	1995-09-27
EP0427926A3 (en)	1992-12-16

Publication	Publication Date	Title
BR9000538A (pt)	1991-01-15	Disco de embreagem
BR9203052A (pt)	1993-04-06	Disco motriz
DE58905545D1 (de)	1993-10-14	Scheibenbremse.
BR8807727A (pt)	1990-07-24	Freio de disco eletricamente acionado
BR9408236A (pt)	1997-08-26	Disco Rom-Ram
BR9000137A (pt)	1990-10-23	Veiculo individual
BR8806677A (pt)	1989-08-29	Disco de embreagem
DE59004390D1 (de)	1994-03-10	Teilbelag-Scheibenbremse.
DE58906728D1 (de)	1994-03-03	Teilbelag-Scheibenbremse.
BR9004870A (pt)	1991-09-10	Acionador de disco
BR9104297A (pt)	1992-06-02	Disco de embreagem
DE68904258D1 (de)	1993-02-18	Scheibenbremse.
BR9103861A (pt)	1992-05-26	Disco de embreagem
BR9303657A (pt)	1994-03-22	Disco de embreagem
ES2015552B3 (es)	1990-09-01	Dispositivo de disco de freno.
BR8705512A (pt)	1988-05-24	Freio de disco
BR9304969A (pt)	1994-06-21	Disco de embreagem
BR9005464A (pt)	1991-09-17	Mecanismo impulsor de discos e estrutura de mecanismo impulsor de discos
BR8805267A (pt)	1989-05-30	Disco de embreagem
NO171959C (no)	1993-05-26	Drivanordning for baatpropell
DE59002112D1 (de)	1993-09-02	Verstellbare umlaufblende.
BR9403227A (pt)	1995-04-11	Disco de embreagem
BR9004331A (pt)	1991-09-03	Freio
BR9103164A (pt)	1992-02-11	Disco de embreagem
BR9003768A (pt)	1992-02-18	Freio de disco

Legal Events

Date	Code	Title	Description
1998-04-14	FB36	Technical and formal requirements: requirement - article 36 of industrial property law
1998-10-06	FF	Decision: intention to grant
1999-02-23	FG	Letter patent granted
2005-03-22	B25A	Requested transfer of rights approved	Free format text: HEWLETT-PACKARD COMPANY (US)
2013-05-21	B21A	Patent or certificate of addition expired [chapter 21.1 patent gazette]	Free format text: PATENTE EXTINTA EM 24/09/2010