US5408373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated transducer-suspension assembly for vertical recording
Assignee: HGST Netherlands BV
•
Filing: 1993-03-15
•
Granted: 1995-04-18
•
Expires: 2013-03-15
Abstract
Abstract An integral combination magnetic transducer and suspension assembly suitable for use in both contact recording and in winchester-type applications is described. A generally rectangular elongated flat suspension member includes a vertical-type inductive read/write transducer formed integrally with the suspension member and is embedded in one end of the suspension member. The vertical inductive transducer is suitable for vertical recording applications. The transducer vertical magnetic pole tip and magnetic yoke structure are formed at one end of the suspension member with the vertical pole tip extending to and exposed at a air bearing surface formed on the lower surface of a slider-shaped protrusion extending from the lower surface of the end of the suspension member. The integral transducer/suspension assembly can be adapted for either flying above the recording media or for use in continuous contact with the recording media. The air bearing surface is formed on the lower surface of a wear pad. The fabrication of the transducer/suspension assembly is adapted to be performed at the wafer level.
Inventors
- 👤 Christopher H. Bajorek
- 👤 Robert E. Fontana
- 👤 Clint D. Snyder
- 👤 David A. Thompson
- 👤 Mason L. Williams
- 👤 Celia E. Yeack-Scranton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:09
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/33; G11B5/39; G11B5/3903; G11B5/3906; G11B5/3916; G11B5/3919; G11B5/3922; G11B5/3925; G11B5/31; G11B17/00; G11B17/32; G11B5/10; G11B5/1272; G11B5/1278; G11B5/187; G11B5/255; G11B5/3103; G11B5/3106; G11B5/3109; G11B5/313; G11B5/3176; G11B5/3179; G11B5/3183; G11B5/3967; G11B5/48; G11B5/4806; G11B5/484; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49036; Y10T29/49041; Y10T29/49043; Y10T29/49044; Y10T29/49046
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
234 words
An integral, unitary magnetic transducer and suspension assembly comprising: an elongated resilient member formed of a dielectric material and having a first end and a second end, said elongated member shaped to have a suspension portion and a transducer portion, said transducer portion disposed at the first end of said elongated member and including a wear pad protruding from an exterior portion thereof, a lower surface of said wear pad defining an air bearing surface; magnetic transducer means embedded in said elongated member at said transducer portion, said magnetic transducer means comprising: a first vertically-oriented magnetic pole tip, said first magnetic pole tip extending to and exposed at said air bearing surface, said first magnetic pole tip forming a portion of a magnetic write sensor only for magnetically recording information in a magnetic storage media; and a second vertically-oriented magnetic pole tip, said second magnetic pole tip extending to and exposed at said air bearing surface adjacent said first magnetic pole tip, said second magnetic pole tip forming a portion of a magnetic read sensor only for reading information magnetically stored in said magnetic storage media; and at least one electrical conductor associated with each of said magnetic write and magnetic read sensors, said electrical conductor embedded in said elongated member and having access on an exterior surface of said elongated member for providing electrical connection to said magnetic write and magnetic read sensors.
Claim 2
Dependent Claim
234 words
An integral, unitary magnetic transducer and suspension assembly comprising: an elongated resilient member formed of a dielectric material and having a first end and a second end, said elongated member shaped to have a suspension portion and a transducer portion, said transducer portion disposed at the first end of said elongated member and including a wear pad protruding from an exterior portion thereof, a lower surface of said wear pad defining an air bearing surface; magnetic transducer means embedded in said elongated member at said transducer portion, said magnetic transducer means comprising: a first vertically-oriented magnetic pole tip, said first magnetic pole tip extending to and exposed at said air bearing surface, said first magnetic pole tip forming a portion of a magnetic write sensor only for magnetically recording information in a magnetic storage media; and a second vertically-oriented magnetic pole tip, said second magnetic pole tip extending to and exposed at said air bearing surface adjacent said first magnetic pole tip, said second magnetic pole tip forming a portion of a magnetic read sensor only for reading information magnetically stored in said magnetic storage media; and at least one electrical conductor associated with each of said magnetic write and magnetic read sensors, said electrical conductor embedded in said elongated member and having access on an exterior surface of said elongated member for providing electrical connection to said magnetic write and magnetic read sensors.
Claim 3
Dependent Claim
21 words
An integral, unitary magnetic transducer and suspension assembly as in claim 1 wherein said wear pad is formed of diamond-like carbon.
Claim 4
Dependent Claim
131 words
An integral, unitary transducer and suspension assembly as in claim 1 wherein: said magnetic write sensor includes a first lower magnetic pole piece formed substantially parallel to said air bearing surface, and a first upper magnetic pole piece magnetically coupling said first lower magnetic pole piece to an upper portion of said first magnetic pole tip, said first lower and upper magnetic pole pieces magnetically connected at a first backgap region; and said magnetic read sensor includes a second lower magnetic pole piece formed substantially parallel to said air bearing surface, and a second upper magnetic pole piece magnetically coupling said second lower magnetic pole piece to an upper portion of said second magnetic pole tip, said second lower and upper magnetic pole pieces magnetically connected at a second backgap region.
Claim 5
Dependent Claim
84 words
A magnetic disk drive system including the unitary transducer and suspension assembly as claimed in claim 1 further including: a housing; at least one magnetic storage media disk mounted in said housing and having means for storing information in data tracks defined thereon; means for moving said magnetic media disk; and means mounted in said housing for supporting said unitary magnetic transducer and suspension assembly in a transducing relationship with respect to the magnetic media in response to movement of said magnetic media disk.
Claim 6
Dependent Claim
54 words
An integral, unitary transducer and suspension assembly as in claim 1 further including at least one electrical contact pad associated with each of said electrical conductors formed in a surface of said elongated member and electrically communicating with said electrical conductor, said electrical contact pad disposed at the second end of said elongated member.
Claim 7
Dependent Claim
43 words
An integral, unitary transducer and suspension assembly as in claim 1 wherein said write sensor is adapted for effecting vertical magnetic recording of information in said magnetic media, and said read sensor is adapted for reading vertically recorded information from said magnetic media.
Claim 8
Dependent Claim
20 words
An integral, unitary transducer and suspension assembly as in claim 1 wherein said read sensor comprises an inductive read sensor.
Claim 9
Dependent Claim
20 words
An integral, unitary transducer and suspension assembly as in claim 1 wherein said read senor comprises a magnetoresistive read sensor.
References Cited (Backward Citations)
US3975772A
Cited
US4710838A
Cited
US4933791A
Cited
US5166845A
Cited
US5041932A
Cited
US5073242A
Cited
US5111351A
Cited
US5272582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-17 | 1998-10-17 | 1999-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-17 | 2002-10-17 | 2003-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-17 | 2006-10-17 | 2007-04-18 | $7700.00 | Window Closed / Lapsed |