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Patent US3889295A successfully refreshed from Google Patents.
US3889295A
Expired / Lapsed
US
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Single-turn conductor pattern for microminiature core assemblies in a multitransducer head
Assignee: UNISYS DEFENSE SYSTEMS Inc A CORP OF
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Filing: 1973-10-09
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Granted: 1975-06-10
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Expires: 1993-10-09
Abstract
Abstract One-turn conductor patterns for a multi-core head assembly are designed to provide for a minimum of cable connections and to maximize track width. The specific configuration of conductor patterns exhibiting these advantages may vary, except for a common criterion. The terminal pads of the conductor patterns to which electronic read/write circuit cables are connected are minimized to the greatest extent possible by a conductor pattern layout that results in one terminal pad being common to as many one for each core, single-turn conductors, as possible.
Inventors
- 👤 Shahbuddin A Billawala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:39
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/31; G11B5/3103; G11B5/3109; G11B5/313; G11B5/17; G11B5/29
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
222 words
In a multitransducer head assembly having a laminate structure of a substrate supporting a first layer of paramagnetic material, a layer of conducting material insulated from said first layer of paramagnetic material by a first layer of insulating material between said first layer of paramagnetic material and said layer of conducting material, a second layer of paramagnetic material insulated from said layer of conducting material by a second layer of insulating material between said layer of conducting material and said second layer of paramagnetic material, said second layer of paramagnetic material contacting said first layer of paramagnetic material at spaced locations thereof so as to form a plurality of individual magnetic cores in a straight line, said layer of conducting material formed to provide an improved single-turn conductor pattern for a plurality of individual transducers in said head, said conductor pattern comprising: a plurality of single-turn electron paths disposed in a straight line, in the same plane, each said path defining a transducing gap and having a first and a second end; one terminal pad connected to the first end of each of said plurality of electron paths; and a plurality of terminal pads, equal in number to said plurality of single-turn electron paths, one terminal pad connected to the second end of each one of said plurality of single-turn electron paths.
Claim 2
Dependent Claim
222 words
In a multitransducer head assembly having a laminate structure of a substrate supporting a first layer of paramagnetic material, a layer of conducting material insulated from said first layer of paramagnetic material by a first layer of insulating material between said first layer of paramagnetic material and said layer of conducting material, a second layer of paramagnetic material insulated from said layer of conducting material by a second layer of insulating material between said layer of conducting material and said second layer of paramagnetic material, said second layer of paramagnetic material contacting said first layer of paramagnetic material at spaced locations thereof so as to form a plurality of individual magnetic cores in a straight line, said layer of conducting material formed to provide an improved single-turn conductor pattern for a plurality of individual transducers in said head, said conductor pattern comprising: a plurality of single-turn electron paths disposed in a straight line, in the same plane, each said path defining a transducing gap and having a first and a second end; one terminal pad connected to the first end of each of said plurality of electron paths; and a plurality of terminal pads, equal in number to said plurality of single-turn electron paths, one terminal pad connected to the second end of each one of said plurality of single-turn electron paths.
Claim 3
Dependent Claim
52 words
The conductor patterns of claim 1 wherein: said plurality of terminal pads and said one terminal pad are connected to the first and second ends of said electron paths by conductive paths providing non-conductive gaps between the ends of one electron path and the ends of a subsequent or preceding electron path.
Claim 4
Dependent Claim
193 words
In a multitransducer head assembly having a Laminate structure of a substrate supporting a first layer of paramagnetic material, said first layer of paramagnetic material divided into individual segments, a layer of conducting material, and a second layer of paramagnetic material, said second layer of paramagnetic material divided into individual segments paired with and contacting the segments of said first layer of paramagnetic material to define individual cores, said layer of conducting material forming an improved single-turn conductor pattern for a plurality of individual transducers in said head, said conductor pattern comprising: a plurality of single-turn electron paths disposed in a straight line, in the same plane, each said path defining a transducing gap and having identical first and a second ends; one terminal pad connected to every second end of one electron path and every first end of an adjacent electron path for each pair of electron paths in said plurality of electron paths; and a plurality of terminal pads, equal in number to said plurality of electron paths, one terminal pad connected to the end of each said plurality of electron paths not having said one terminal pad connected to it.
Claim 5
Dependent Claim
193 words
In a multitransducer head assembly having a Laminate structure of a substrate supporting a first layer of paramagnetic material, said first layer of paramagnetic material divided into individual segments, a layer of conducting material, and a second layer of paramagnetic material, said second layer of paramagnetic material divided into individual segments paired with and contacting the segments of said first layer of paramagnetic material to define individual cores, said layer of conducting material forming an improved single-turn conductor pattern for a plurality of individual transducers in said head, said conductor pattern comprising: a plurality of single-turn electron paths disposed in a straight line, in the same plane, each said path defining a transducing gap and having identical first and a second ends; one terminal pad connected to every second end of one electron path and every first end of an adjacent electron path for each pair of electron paths in said plurality of electron paths; and a plurality of terminal pads, equal in number to said plurality of electron paths, one terminal pad connected to the end of each said plurality of electron paths not having said one terminal pad connected to it.
Claim 6
Dependent Claim
52 words
The conductor pattern of claim 3 wherein said plurality of terminal pads and said one terminal pad are connected to the first and second ends of said electron paths by conductive paths providing non-conductive gaps between the ends of one electron path and the ends of a subsequent or preceding electron path.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |