Patent US3587997A successfully refreshed from Google Patents.
US3587997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversing drive means for tape reels and the like
Assignee: Nortel Networks Inc
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Filing: 1969-01-31
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Granted: 1971-06-28
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Expires: 1989-01-31
Abstract
Abstract A DRIVE TRAIN INCLUDING A REVERSIBLE MOTOR HAVING AN OUTPUT SHAFT COUPLED TO ONE OR THE OTHER OF A PAIR OF TAPE DRIVE SPINDLES AS A FUNCTION OF THE DRIVING DIRECTION OF THE OUTPUT SHAFT, BY A DRIVE TRANSMISSION MEANS INCLUDING AN IDLER ROLLER HELD IN DRIVING ENGAGEMENT WITH THE MOTOR OUTPUT SHAFT BY A SUPPORT BRACKET PIVOTAL ABOUT THE AXIS OF THE OUTPUT SHAFT, SUCH THAT THE SUPPORT BRACKET FOLLOWS THE DRIVING DIRECTION OF THE SHAFT TO MOVE THE IDLER ROLLER IN AN ARCUATE PATH OF CONSTANT RADIUS ABOUT THE OUTPUT SHAFT AXIS AS A CENTER, INTO AND OUT OF ENGAGEMENT WITH ONE OR THE OTHER OF THE TWO TAPE DRIVE SPINDLES.
Inventors
- 👤 Robert E Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:57
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |