Patent US3240520A successfully refreshed from Google Patents.
US3240520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick releasing high strength connector
Assignee: North American Aviation Corp
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Filing: 1962-11-16
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Granted: 1966-03-15
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Expires: 1982-11-16
Abstract
No abstract record available.
Inventors
- 👤 William J Dailey
- 👤 Springs Santa Fe
- 👤 Jack C Helf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:48
CPC Classifications
B; B64; B64D; B64D1/00; B64D1/02; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17231; Y10T279/17239; Y10T279/17256; Y10T403/00; Y10T403/59; Y10T403/599
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
285 words
A QUICK-RELEASING HIGH STRENGTH CONNECTOR COMPRISING: FIRST AND SECOND MUTUALLY ALIGNED SHAFTS HAVING MUTUALLY ALIGNED ABUTTING FLANGED ENDS EACH PROVIDING A BEARING SHOULDER, THE BEARING SHOULDER ON SAID FIRST SHAFT HAVING A FIRST CAMMING SURFACE IN THE FORM OF A CONE EXTENDING INWARDLY OF SAID SHAFTS AND AWAY FROM SAID SECOND SHAFT; A PLURALITY OF FLOATING DOGS EACH EXTENDING CIRCUMFERENTIALLY OF SAID FLANGED ENDS AND ALL COLLECTIVELY SUBSTANTIALLY CIRCUMSCRIBING THE ENTIRE PERIPHERY OF SAID FLANGED ENDS, EACH OF SAID DOGS HAVING A FIRST EAR ENGAGED WITH SAID SECOND SHAFT END, SAID FIRST EAR HAVING A SECOND CAMMING SURFACE MATING WITH SAID FIRST CAMMING SURFACE FOR COOPERATING WITH SAID FIRST SHAFT END FOR PROVIDING A SUFFICIENT CAMMING FORCE ON SAID DOGS WHEN SAID SHAFTS ARE UNDER A TENSILE LOAD TO DISENGAGE SAID DOGS FROM SAID FIRST SHAFT; AN AXIALLY SLIDABLE SLEEVE SURROUNDING SAID DOGS FOR RESTRAINING OUTWARD MOVEMENT OF SAID DOGS, SAID SLEEVE HAVING AT LEAST TWO BEARING CONTACT SURFACES WITH EACH OF SAID DOGS WHEN SAID DOGS ARE ENGAGED WITH BOTH OF SAID SHAFTS, EACH OF SAID BEARING CONTACT SURFACES BEING FURTHER AXIALLY FROM THE ABUTMENT OF SAID TWO SHAFT ENDS THAN THE ENGAGEMENT OF SAID EARS WITH SAID SHAFT ENDS ARE FROM THE ABUTMENT OF SAID TWO SHAFT ENDS SO THAT A MINIMAL RADIAL FORCE EXISTS AT THE INTERFACE OF SAID SECOND EAR AND SAID SECOND SHAFT END; EACH OF SAID DOGS COMPRISING AN EXTERNAL CIRCUMFERENTIALLY EXTENDING REBATED PORTION INTERMEDIATE THE BEARING SURFACES AND IMMEDIATELY ADJACENT THERETO, THE EDGES OF THE REBATED PORTION ALSO BEING FURTHER AXIALLY FROM THE ABUTMENT OF SAID TWO SHAFT ENDS THAN THE ENGAGEMENT OF SAID EARS WITH AID SHAFT ENDS ARE FROM THE ABUTMENT OF SAID TWO SHAFT ENDS.
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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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |