US4667260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film vertical recording head
Assignee: Seagate Technology LLC
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Filing: 1986-03-20
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Granted: 1987-05-19
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Expires: 2006-03-20
Abstract
Abstract A vertical recording head includes a W-shaped core, a substrate carrying a thin film probe supported in one slot of the core, and a shield coil wound in the slots to hold the substrate and assemblage together. A non-magnetic cap forms the surface of the head over the cap, with the arrangement being such that the probe extends through the cap so the magnetic gap is as small as possible.
Inventors
- 👤 Craig M. Perlov
- 👤 Arthur Calderon, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:42
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/1278; G11B5/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A magnetic read/write head for vertical recording comprising a substantially W-shaped body consisting of a single piece of magnetically conductive material having first and second grooves cut into a surface thereof; an insulating substrate; a thin film probe deposited onto said substrate; said substrate and probe being positioned in said first groove and protruding therefrom beyond said surface of said body; a shield coil supported in said first and second grooves, said shield coil being wrapped around the substrate and probe within said first groove and that portion of said body between said first and second grooves; and a non-magnetic cap supported by the said surface of said body, an end of said substrate and probe forming a frontal surface of said head flush with a surface of said cap.
Claim 2
Dependent Claim
130 words
A magnetic read/write head for vertical recording comprising a substantially W-shaped body consisting of a single piece of magnetically conductive material having first and second grooves cut into a surface thereof; an insulating substrate; a thin film probe deposited onto said substrate; said substrate and probe being positioned in said first groove and protruding therefrom beyond said surface of said body; a shield coil supported in said first and second grooves, said shield coil being wrapped around the substrate and probe within said first groove and that portion of said body between said first and second grooves; and a non-magnetic cap supported by the said surface of said body, an end of said substrate and probe forming a frontal surface of said head flush with a surface of said cap.
References Cited (Backward Citations)
GB2126408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |