US3169303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making magnetic record transducing heads
Assignee: Sonotone Corp
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Filing: 1961-04-26
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Granted: 1965-02-16
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Expires: 1981-04-26
Abstract
No abstract record available.
Inventors
- 👤 Heiman W Koren
- 👤 Michalko Ignatius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:30
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/10; G11B5/11; G11B5/127; G11B5/17; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49036; Y10T29/49041; Y10T29/49048; Y10T29/49055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN THE PRODUCTION OF A MAGNETIC RECORD TRANSDUOING HEAD COMPRISING A CASING WITH AN OPEN CASING FACE AND HOLDING IN ITS CASING INTERIOR A MAGNETIC CORE LOOP HAVING TWO CONFRONTING CORE SECTIONS WITH ONE SET OF CONFRONTING POLE FACES SEPARATED BY A TRANSDUCING CORE GAP EXTENDING TRANSVERSELY TO A FLAT SURFACE OF A MAGNETIC RECORD MEDIUM MOVING PAST ONE EDGE OF SAID CORE GAP EXPOSED ALONG SAID ASING FACE AN AN OPPOSITE SET OF CONFRONTING POLE FACES AT THE OPPOSITE ENDS OF SAID TWO CORE SECTIONS HELD IN THE DEEPER CASING INTERIOR, THE PROCEDURE COMPRISING ASSEMBLING THE TWO CORE SECTIONS AND THEIR WINDINGS INTO THE CORE LOOP WHICH IS INTERLINKED WITH SAID WINDINGS.
Claim 2
Dependent Claim
113 words
IN THE PRODUCTION OF A MAGNETIC RECORD TRANSDUOING HEAD COMPRISING A CASING WITH AN OPEN CASING FACE AND HOLDING IN ITS CASING INTERIOR A MAGNETIC CORE LOOP HAVING TWO CONFRONTING CORE SECTIONS WITH ONE SET OF CONFRONTING POLE FACES SEPARATED BY A TRANSDUCING CORE GAP EXTENDING TRANSVERSELY TO A FLAT SURFACE OF A MAGNETIC RECORD MEDIUM MOVING PAST ONE EDGE OF SAID CORE GAP EXPOSED ALONG SAID ASING FACE AN AN OPPOSITE SET OF CONFRONTING POLE FACES AT THE OPPOSITE ENDS OF SAID TWO CORE SECTIONS HELD IN THE DEEPER CASING INTERIOR, THE PROCEDURE COMPRISING ASSEMBLING THE TWO CORE SECTIONS AND THEIR WINDINGS INTO THE CORE LOOP WHICH IS INTERLINKED WITH SAID WINDINGS.
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |