Patent US3311280A successfully refreshed from Google Patents.
US3311280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape transport machine
Assignee: International Business Machines Corp
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Filing: 1965-05-03
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Granted: 1967-03-28
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Harold A Larson
- 👤 Frederick A Schultz
- 👤 Leonard H Thompson
- 👤 Jack F Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:08
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; B; B65; B65H; B65H23/00; B65H23/04; B65H23/18; G11B15/18; G11B15/26; G11B15/28; G11B15/43; G11B15/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A POSITIONING ARRANGEMENT FOR A MOVABLE BUFFER ARM IN A TAPE DRIVE COMPRISING: A MOVABLE PLATE FORMED WITH AN ARM-ENGAGING SIDE, SAID BUFFER ARM HAVING A PORTION ENGAGEABLE WITH SAID SIDE IN LOCKING ENGAGEMENT, AND BIASING MEANS DIRECTLY CONNECTED BETWEEN SAID BUFFER ARMS AND SAID MOVABLE PLATE, WHEREBY SAID BIASING MEANS CO-ACTS WITH SAID ARM ENGAGING SIDE TO ENABLE SAID LOCKING ENGAGEMENT.
Claim 2
Dependent Claim
62 words
A POSITIONING ARRANGEMENT FOR A MOVABLE BUFFER ARM IN A TAPE DRIVE COMPRISING: A MOVABLE PLATE FORMED WITH AN ARM-ENGAGING SIDE, SAID BUFFER ARM HAVING A PORTION ENGAGEABLE WITH SAID SIDE IN LOCKING ENGAGEMENT, AND BIASING MEANS DIRECTLY CONNECTED BETWEEN SAID BUFFER ARMS AND SAID MOVABLE PLATE, WHEREBY SAID BIASING MEANS CO-ACTS WITH SAID ARM ENGAGING SIDE TO ENABLE SAID LOCKING ENGAGEMENT.
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) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |