Patent US3170045A successfully refreshed from Google Patents.
US3170045A
Expired / Lapsed
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Hydrodynamically air lubricated magnetic tape head
Assignee: International Business Machines Corp
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Filing: 1960-12-06
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Granted: 1965-02-16
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Expires: 1980-12-06
Abstract
No abstract record available.
Inventors
- 👤 Heard K Baumeister
- 👤 Nejezchleb Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:26
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/62; G11B15/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A TAPE TRANSPORT ADAPTED TO PROCESS THEREIN A TAPE, A TAPE PROCESSING HEAD HAVING A CURVED SURFACE, SAID HEAD HAVING A TAPE PROCESSING ZONE AT A POINT ON THE SURFACE THEREOF, A TAPE IN SAID TRANSPORT, TAPE GUIDE MEANS ADAPTED TO MAINTAIN AN ANGLE OF WRAP OF SAID TAPE ABOUT SAID CURVED SURFACE WHICH IS WITHIN THE RANGE OF .25* -10* AT OPPOSITE SIDES OF SAID PROCESSING ZONE, MEANS FOR FEEDING SAID TAPE OVER THE CURVED SURFACE OF SAID HEAD PAST SAID PROCESSING ZONE AT A SUFFICIENTLY HIGH VELOCITY TO
Claim 2
Dependent Claim
91 words
IN A TAPE TRANSPORT ADAPTED TO PROCESS THEREIN A TAPE, A TAPE PROCESSING HEAD HAVING A CURVED SURFACE, SAID HEAD HAVING A TAPE PROCESSING ZONE AT A POINT ON THE SURFACE THEREOF, A TAPE IN SAID TRANSPORT, TAPE GUIDE MEANS ADAPTED TO MAINTAIN AN ANGLE OF WRAP OF SAID TAPE ABOUT SAID CURVED SURFACE WHICH IS WITHIN THE RANGE OF .25* -10* AT OPPOSITE SIDES OF SAID PROCESSING ZONE, MEANS FOR FEEDING SAID TAPE OVER THE CURVED SURFACE OF SAID HEAD PAST SAID PROCESSING ZONE AT A SUFFICIENTLY HIGH VELOCITY TO
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 |