US4246695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two rail slider assembly production technique for making thin film heads
Assignee: Memorex Corp
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Filing: 1979-08-31
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Granted: 1981-01-27
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Expires: 1999-08-31
Abstract
Abstract A process is disclosed wherein read/write transducers are applied simultaneously to a mass of motion-constrained, pre-machined, air bearing sliders.
Inventors
- 👤 Robert T. Tsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:46
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/31; G11B5/3103; G11B5/48; G11B5/58; G11B5/60; G11B5/6005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49036; Y10T29/49041; Y10T29/49043; Y10T29/49044; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
85 words
A method of simultaneously manufacturing a plurality of read/write inductive transducers comprising: a. pre-machining a plurality of air bearing sliders; b. mechanically constraining a plurality of said air bearing sliders in a fixture with the surfaces to receive read/write magnetic transducers facing outward from said fixture; c. filling spaces between said sliders with suitable filler material; d. hardening said filler material; e. polishing said transducer receiving surfaces; f. applying read/write magnetic transducers simultaneously to said sliders; and, g. removing said filler material from said sliders.
Claim 2
Independent Claim
85 words
A method of simultaneously manufacturing a plurality of read/write inductive transducers comprising: a. pre-machining a plurality of air bearing sliders; b. mechanically constraining a plurality of said air bearing sliders in a fixture with the surfaces to receive read/write magnetic transducers facing outward from said fixture; c. filling spaces between said sliders with suitable filler material; d. hardening said filler material; e. polishing said transducer receiving surfaces; f. applying read/write magnetic transducers simultaneously to said sliders; and, g. removing said filler material from said sliders.
Claim 3
Dependent Claim
25 words
The process of claim 1 including the step of polishing the air bearing surface of said air bearing sliders after removal of said filler material.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein said filler material is polyimide.
Claim 5
Dependent Claim
11 words
The process of claim 1 wherein said filler material is photopolymer.
Claim 6
Dependent Claim
20 words
The process of claim 1 wherein a plurality of transducers are applied to each of said air bearing sliders simultaneously.
Claim 7
Dependent Claim
27 words
The process of claim 1 including the step of applying a layer of non-magnetic and non-conductive material to said air bearing slider surface immediately after step e.
Claim 8
Dependent Claim
30 words
The process of claim 6 including the step of polishing said layer of non-magnetic and non-conductive material prior to applying said read/write magnetic transducers to said non-magnetic and non-conductive material.
Claim 9
Dependent Claim
15 words
The process of claim 6 wherein said non-magnetic and non-conductive material is SiO 2 .
Claim 10
Dependent Claim
17 words
The process of claim 6 wherein said non-magnetic and non-conductive material is Al 2 O 3 .
Claim 11
Dependent Claim
17 words
The process of claim 6 wherein said non-magnetic and non-conductive material is Si 3 N 4 .
Claim 12
Dependent Claim
21 words
The process of claims 1 or 5 wherein said read/write magnetic transducers are applied to said sliders by thin film techniques.
References Cited (Backward Citations)
US3928908A
Cited
US4158213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |