Patent US3278133A successfully refreshed from Google Patents.
US3278133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape reel latch
Assignee: International Business Machines Corp
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Filing: 1963-12-23
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Granted: 1966-10-11
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Frederick B Froehlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:37
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/662; B; B65; B65H; B65H18/00; B65H18/02; B65H18/04; F; F16; F16C; F16C13/00; Y; Y10; Y10T; Y10T403/00; Y10T403/40; Y10T403/46; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A REEL SECURING DEVICE WITH A TAPPED DRIVE SHAFT AND AN EXPANDING ARBOR DEVICE THEREON, COMPRISING A SHOULDERED CIRCULAR FLANGE DRUM FASTENED TO SAID SHAFT, AN INNER TAPERED SPLIT RING AND AN OUTER TAPERED CAM RING ON SAID DRUM, AN EXPANDING MANDREL ON SAID DRUM BETWEEN SAID RINGS AND FORMED WITH INWARDLY TAPERED ENDS WHICH AR E ENGAGED BY SAID RINGS FOR EXPANSION, A FULCRUM SCREW FASTENED IN SAID SHAFT TAP, SPRING MEANS ON SAID SCREW AND PRESSING AGAINST SAID OUTER CAM RING, AND A TIGHTENING LEVER PIVOTED ON SAID SCREW WITH A CAM FACE PRESSING AGAINST SAID SPRING MEANS, WHEREBY SAID LEVER MAY RELEASE SAID SPRING MEANS TO FORCE SAID CAM RING AGAINST AND MANDREL TO WEDGE THE MANDREL TO AN EXPANDING SIZE TIGHTLY WITHIN A REEL.
Claim 2
Dependent Claim
128 words
A REEL SECURING DEVICE WITH A TAPPED DRIVE SHAFT AND AN EXPANDING ARBOR DEVICE THEREON, COMPRISING A SHOULDERED CIRCULAR FLANGE DRUM FASTENED TO SAID SHAFT, AN INNER TAPERED SPLIT RING AND AN OUTER TAPERED CAM RING ON SAID DRUM, AN EXPANDING MANDREL ON SAID DRUM BETWEEN SAID RINGS AND FORMED WITH INWARDLY TAPERED ENDS WHICH AR E ENGAGED BY SAID RINGS FOR EXPANSION, A FULCRUM SCREW FASTENED IN SAID SHAFT TAP, SPRING MEANS ON SAID SCREW AND PRESSING AGAINST SAID OUTER CAM RING, AND A TIGHTENING LEVER PIVOTED ON SAID SCREW WITH A CAM FACE PRESSING AGAINST SAID SPRING MEANS, WHEREBY SAID LEVER MAY RELEASE SAID SPRING MEANS TO FORCE SAID CAM RING AGAINST AND MANDREL TO WEDGE THE MANDREL TO AN EXPANDING SIZE TIGHTLY WITHIN A REEL.
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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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |