Patent US3269525A successfully refreshed from Google Patents.
US3269525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball-jointed link chain
Assignee: DRAHTWERK C S SCHMIDT AG
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Filing: 1964-07-14
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Granted: 1966-08-30
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Expires: 1984-07-14
Abstract
No abstract record available.
Inventors
- 👤 Paulski Karl-Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:09
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/30; B65G17/38; B65G17/385; B65G2201/00; B65G2201/02; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32737
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
142 words
IN A CONVEYOR LINK CHAIN, A PLURALITY OF LINKS, ONE END OF EACH SAID LINKS BEING FORMED AS A HEMISPHERICAL MEMBER, THE OTHER END HAVING A BORE EXTENDING AXIALLY THEREIN, THE DIAMETER AT THE BORE INLET CORRESPONDING TO THE DIAMETER OF THE HEMISPHERICAL MEMBER, SAID BORE EXTENDING AS A CONICAL WIDENED PORTION TO A DIAMETER GREATER THAN THAT AT THE BORE INLET, SAID BORE HAVING AN INWARDLY EXTENDING CIRCULAR SHOULDER AT SAID GREATER DIAMETER HAVING A DIAMETER EQUAL TO THAT OF THE BORE INLET, SAID BORE EXTENDING FURTHER IN CYLINDRICAL FORM A PREDETERMINED DISTANCE FROM SAID SHOULDER INTO SAID OTHER END, A BALL MOUNTING IN SAID CONICAL WIDENED PORTION, THE EXTERNAL WALL OF SAID BALL MOUNTING CORRESPONDING TO SAID CONICAL WIDENED PORTION, THE INTERNAL WALL OF SAID MOUNTING CONFORMING TO SAID HEMISPHERICAL MEMBER, SAID MOUNTING CONING HAVING A DIAGONALLY EXTENDING SLOT THEREACROSS.
Claim 2
Dependent Claim
142 words
IN A CONVEYOR LINK CHAIN, A PLURALITY OF LINKS, ONE END OF EACH SAID LINKS BEING FORMED AS A HEMISPHERICAL MEMBER, THE OTHER END HAVING A BORE EXTENDING AXIALLY THEREIN, THE DIAMETER AT THE BORE INLET CORRESPONDING TO THE DIAMETER OF THE HEMISPHERICAL MEMBER, SAID BORE EXTENDING AS A CONICAL WIDENED PORTION TO A DIAMETER GREATER THAN THAT AT THE BORE INLET, SAID BORE HAVING AN INWARDLY EXTENDING CIRCULAR SHOULDER AT SAID GREATER DIAMETER HAVING A DIAMETER EQUAL TO THAT OF THE BORE INLET, SAID BORE EXTENDING FURTHER IN CYLINDRICAL FORM A PREDETERMINED DISTANCE FROM SAID SHOULDER INTO SAID OTHER END, A BALL MOUNTING IN SAID CONICAL WIDENED PORTION, THE EXTERNAL WALL OF SAID BALL MOUNTING CORRESPONDING TO SAID CONICAL WIDENED PORTION, THE INTERNAL WALL OF SAID MOUNTING CONFORMING TO SAID HEMISPHERICAL MEMBER, SAID MOUNTING CONING HAVING A DIAGONALLY EXTENDING SLOT THEREACROSS.
Claim 3
Dependent Claim
35 words
IN A LINK CHAIN ACCORDING TO CLAIM 1, WHEREIN THE CENTRAL PORTION OF EACH OF SAID LINKS IS PROVIDED WITH A REINFORCEMENT AND SUPPORTING WHEELS MOUNTED ON EACH OF SAID LINKS INTERMEDIATE THE ENDS THEREOF.
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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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |