Patent US3245712A successfully refreshed from Google Patents.
US3245712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power operated grapple tong
Assignee: Individual
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Filing: 1964-07-21
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Granted: 1966-04-12
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Expires: 1984-07-21
Abstract
No abstract record available.
Inventors
- 👤 John H Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:58
CPC Classifications
B; B66; B66C; B66C3/00; B66C3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A GRAPPLE TONG ASSEMBLY COMPRISING A PAIR OF LEVERS, PIVOT CONNECTING SAID LEVERS INTERMEDIATE THEIR ENDS AND PROVIDING AT OPPOSITE ENDS OF SAID LEVERS A PAIR OF ACTUATING ARMS AND A PAIR OF ACTUATED ARMS, A PAIR OF ACTUATING LINKS, A PIVOT CONNECTING ONE END OF EACH LINK, PIVOTS CONNECTING THE OTHER ENDS OF SAID LINKS EACH TO AN ACTUATING ARM, AN OPENING CABLE HAVING ONE END SECURED TO SAID LINKS AND ENTRAINED ABOUT THE LEVER PIVOT AND OPERABLE UPON TENSIONING TO EFFECT OPENING OF SAID ACTUATED ARMS, A CLOSING CABLE HAVING ONE END SECURED TO A PIVOT WHICH CONNECTS AN ACTUATING LINK TO AN ACTUATING ARM AND ENTRAINED ABOUT THE OTHER ACTUATING LINK AND ACTUATING ARM PIVOT AND ABOUT SAID PIVOT CONNECTING SAID ACTUATING LINKS TOGETHER WHEREBY SAID CABLES ARE DISPOSED IN SIDEBY-SIDE RELATION AND TENSIONING OF THE CLOSING CABLE WILL SIMULTANEOUSLY SUPPORT SAID ASSEMBLY AND CAUSE CLOSING OF SAID ACTUATED ARM.
Claim 2
Dependent Claim
153 words
A GRAPPLE TONG ASSEMBLY COMPRISING A PAIR OF LEVERS, PIVOT CONNECTING SAID LEVERS INTERMEDIATE THEIR ENDS AND PROVIDING AT OPPOSITE ENDS OF SAID LEVERS A PAIR OF ACTUATING ARMS AND A PAIR OF ACTUATED ARMS, A PAIR OF ACTUATING LINKS, A PIVOT CONNECTING ONE END OF EACH LINK, PIVOTS CONNECTING THE OTHER ENDS OF SAID LINKS EACH TO AN ACTUATING ARM, AN OPENING CABLE HAVING ONE END SECURED TO SAID LINKS AND ENTRAINED ABOUT THE LEVER PIVOT AND OPERABLE UPON TENSIONING TO EFFECT OPENING OF SAID ACTUATED ARMS, A CLOSING CABLE HAVING ONE END SECURED TO A PIVOT WHICH CONNECTS AN ACTUATING LINK TO AN ACTUATING ARM AND ENTRAINED ABOUT THE OTHER ACTUATING LINK AND ACTUATING ARM PIVOT AND ABOUT SAID PIVOT CONNECTING SAID ACTUATING LINKS TOGETHER WHEREBY SAID CABLES ARE DISPOSED IN SIDEBY-SIDE RELATION AND TENSIONING OF THE CLOSING CABLE WILL SIMULTANEOUSLY SUPPORT SAID ASSEMBLY AND CAUSE CLOSING OF SAID ACTUATED ARM.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |