Patent US3615937A successfully refreshed from Google Patents.
US3189239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital tape transport
Assignee: Midwestern Instruments Inc
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Filing: 1961-02-16
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Granted: 1965-06-15
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Expires: 1981-02-16
Abstract
No abstract record available.
Inventors
- 👤 Robert M Brumbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:05
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/56; G11B15/58; G11B15/18; G11B15/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN A DIGITAL TAPE TRANSPORT, A SUPPORT; A PAIR OF TAPE DRIVING CAPSTANTS ROTATABLY MOUNTED IN SPACED RELATIONSHIP ON SAID SUPPORT AND EACH BEING PROVIDED WITH AN AIR PASSAGE THERETHROUGH TERMINATING IN AN OUTLET; MEANS ON SAID SUPPORT AND OPERABLY COUPLED WITH SAID CAPSTAN FOR ROTATING SAID CAPSTANS IN OPPOSITE DIRECTIONS; PERFORATED MEANS ON EACH OF SAID CAPSTANS ACROSS THE OUTLET THEREFOR FOR PASSING AIR OUTWARDLY FROM SAID PASSAGE AND FOR PROVIDING A SURFACE ENGAGEABLE WITH THE TAPE IN DRIVING RELATIONSHIP; PNEUMATIC MEANS ON SAID SUPPORT IN FLUID COMMUNICATION WITH EACH OF SAID PASSAGE FOR CONTINUOUSLY DIRECTING AIR UNDER A POSITIVE PRESSURE THROUGH THE LATTER AND OUTWARDLY THROUGH SAID PERFORATED MEANS TO NORMALLY MAINTAIN SAID TAPE OUT OF ENGAGEMENT WITH THE SURFACE OF THE LATTER AS SAID CAPSTANS CONTINUE TO ROTATE; A PAIR OF ARMS CARRIED BY THE SUPPORT, EACH OF SAID ARMS BEING POSITIONED ON SAID SUPPORT ADJACENT TO
Claim 2
Dependent Claim
150 words
IN A DIGITAL TAPE TRANSPORT, A SUPPORT; A PAIR OF TAPE DRIVING CAPSTANTS ROTATABLY MOUNTED IN SPACED RELATIONSHIP ON SAID SUPPORT AND EACH BEING PROVIDED WITH AN AIR PASSAGE THERETHROUGH TERMINATING IN AN OUTLET; MEANS ON SAID SUPPORT AND OPERABLY COUPLED WITH SAID CAPSTAN FOR ROTATING SAID CAPSTANS IN OPPOSITE DIRECTIONS; PERFORATED MEANS ON EACH OF SAID CAPSTANS ACROSS THE OUTLET THEREFOR FOR PASSING AIR OUTWARDLY FROM SAID PASSAGE AND FOR PROVIDING A SURFACE ENGAGEABLE WITH THE TAPE IN DRIVING RELATIONSHIP; PNEUMATIC MEANS ON SAID SUPPORT IN FLUID COMMUNICATION WITH EACH OF SAID PASSAGE FOR CONTINUOUSLY DIRECTING AIR UNDER A POSITIVE PRESSURE THROUGH THE LATTER AND OUTWARDLY THROUGH SAID PERFORATED MEANS TO NORMALLY MAINTAIN SAID TAPE OUT OF ENGAGEMENT WITH THE SURFACE OF THE LATTER AS SAID CAPSTANS CONTINUE TO ROTATE; A PAIR OF ARMS CARRIED BY THE SUPPORT, EACH OF SAID ARMS BEING POSITIONED ON SAID SUPPORT ADJACENT TO
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |