Patent US3319803A successfully refreshed from Google Patents.
US3319803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable chain boom
Assignee: Fairey Canada Ltd
•
Filing: 1966-04-12
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Granted: 1967-05-16
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Expires: 1986-04-12
Abstract
No abstract record available.
Inventors
- 👤 Northcott Derek John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:14
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
IN COMBINATION WITH A RETRACTABLE CHAIN BOOM COMPRISED OF A ROW OF LINKS DETACHABLY CONNECTED IN A STRAIGHTARM ASSEMBLY, A SUPPORT FOR THE INNER END OF THE CHAIN BOOM, INTERMITTENTLY ACTING MEANS OPERABLE WHEN THE BOOM IS RETRACTED FOR DISCONNECTING THE THEN INNER LINK FROM THE BOOM AND FEEDING THE SAME TO A WAY STATION, A MAGAZINE FOR STORING THE DISCONNECTED LINKS SIDE-BY-SIDE AND INCLUDING THE WAY STATION AS ONE OF ITS STORAGE SPACES, AND A CONVEYOR STRUCTURE OPERATING IN EACH OF A SUCCESSION OF INTERRUPTED MOVEMENTS TO SHIFT THE LINKS LATERALLY FROM ONE TO A NEXT ADJACENT SPACE IN THE MAGAZINE, THE CONVEYOR STRUCTURE COMPRISING AN ENDLESS REVERSIBLE CONVEYOR CHAIN TRAINED ABOUT SPROCKET WHEELS SO THAT A RUN OF THE CHAIN LIES OVERHEAD AND AT RIGHT ANGLES TO LINKS OCCUPYING SAID SPACES, FLIGHTS ON THE CONVEYOR CHAIN FUNCTIONAL TO ENGAGE AND SHIFT THE LINKS OCCUPYING SAID SPACES IN EITHER OF TWO OPPOSITE LATERAL DIRECTIONS DEPENDING UPON THE DIREC-
Claim 2
Dependent Claim
159 words
IN COMBINATION WITH A RETRACTABLE CHAIN BOOM COMPRISED OF A ROW OF LINKS DETACHABLY CONNECTED IN A STRAIGHTARM ASSEMBLY, A SUPPORT FOR THE INNER END OF THE CHAIN BOOM, INTERMITTENTLY ACTING MEANS OPERABLE WHEN THE BOOM IS RETRACTED FOR DISCONNECTING THE THEN INNER LINK FROM THE BOOM AND FEEDING THE SAME TO A WAY STATION, A MAGAZINE FOR STORING THE DISCONNECTED LINKS SIDE-BY-SIDE AND INCLUDING THE WAY STATION AS ONE OF ITS STORAGE SPACES, AND A CONVEYOR STRUCTURE OPERATING IN EACH OF A SUCCESSION OF INTERRUPTED MOVEMENTS TO SHIFT THE LINKS LATERALLY FROM ONE TO A NEXT ADJACENT SPACE IN THE MAGAZINE, THE CONVEYOR STRUCTURE COMPRISING AN ENDLESS REVERSIBLE CONVEYOR CHAIN TRAINED ABOUT SPROCKET WHEELS SO THAT A RUN OF THE CHAIN LIES OVERHEAD AND AT RIGHT ANGLES TO LINKS OCCUPYING SAID SPACES, FLIGHTS ON THE CONVEYOR CHAIN FUNCTIONAL TO ENGAGE AND SHIFT THE LINKS OCCUPYING SAID SPACES IN EITHER OF TWO OPPOSITE LATERAL DIRECTIONS DEPENDING UPON THE DIREC-
References Cited (Backward Citations)
US724348A
Cited
US3179267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |