Patent US3266827A successfully refreshed from Google Patents.
US3266827A
Expired / Lapsed
US
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Method of and means for interconnecting externally screw-threaded shafts
Assignee: ZF International UK Ltd
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Filing: 1963-12-18
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Granted: 1966-08-16
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Expires: 1983-12-18
Abstract
No abstract record available.
Inventors
- 👤 Whicker John Charles Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:23
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/02; F16B; F16B7/00; F16B7/18; F16B7/182; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/24; F16B2200/00; F16B2200/10; Y; Y10; Y10S; Y10S403/00; Y10S403/05; Y10T; Y10T403/00; Y10T403/55
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
MEANS FOR INTERCONNECTING EXTERNALLY SCREW-THREADED SHAFTS SO THAT A NUT CAN RUN FREELY FROM ONE SHAFT TO THE OTHER, COMPRISING AXIALLY EXTENDING INTERNAL SCREW-THREADS OF THE SAME HAND AS THE EXTERNAL THREADS AND FORMED IN THE ENDS OF THE SHAFTS WITH PITCH OF THE THREADS EQUAL TO THE PITCH OF THE EXTERNAL THREADS ON THE SHAFTS AND THE CRESTS AND ROOTS OF THE EXTERNAL THREADS RADIALLY ALIGNED RESPECTIVELY WITH THE ROOTS AND CRESTS OF THE AXIALLY EXTENDING INTERNAL THREADS, AND AN EXTERNALLY SCREW-THREADED SPIGOT ENGAGED WITH THE AXIALLY EXTENDING THREADS ON BOTH SHAFTS, THE PITCH OF THE THREAD ON THE SPIGOT BEING EQUAL TO THE PITCH OF THE THREADS ON THE SHIFTS.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |