Patent US3101968A successfully refreshed from Google Patents.
US3101968A
Expired / Lapsed
US
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Grapples
Assignee: Cianbro Manufacturing Corp
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Filing: 1962-09-12
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Granted: 1963-08-27
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Expires: 1982-09-12
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Cianchette
- 👤 John S Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:10
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/42; B66C1/422; F; F16; F16L; F16L1/00; F16L1/024; F16L1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
A PIPE GRAB OF THE CHARACTER DESCRIBED COMPRISING PIVOTALLY CONNECTED HOOK AND CLAW MEMBERS, SAID HOOK MEMBER HAVING A SUBSTANTIALLY STRAIGHTWAY EXTENDING BODY PORTION MERGING AT ITS LOWER END INTO A LATERALLY CURVED PORTION TERMINATING IN A GRIPPING POINT, THE CLAW MEMBER BEING SUBSTANTIALLY SICKLE-SHAPED AND ARRANGED WITH ITS OPENING DOWNWARDLY DISPOSED AND BEING PIVOTED AT ITS ONE END TO THE HOOK MEMBER AT APPROXIMATELY THE JUNCTION OF ITS BODY AND CURVED LOWER END PORTION AND TERMINATING AT ITS OTHER END IN A GRIPPING POINT AND BEING BIASED BY GRAVITY TO A NORMAL POSITION IN WHICH ITS SAID GRIPPING POINT IS SPACED FROM THE GRIPPING POINT OF THE HOOK MEMBER A DISTANCE LESS THAN THE DIAMETER OF THE PIPE TO BE GRAPPLED, A HOIST-LINE OPERATIVELY CONNECTED TO THE UPPER END OF THE HOOK MEMBER, A VERTICAL EXTENSIBLE AND CONTRACTIBLE LINKAGE SYSTEM INTERPOSED BETWEEN SAID HOIST-LINE AND SAID HOOK MEMBER, AND MEANS RESPONSIVE TO EXTENSION OF SAID LINKAGE SYSTEM FOR IMPARTING DOWNWARD STABILIZING PRESSURE ON A PIPE ENGAGED BETWEEN THE HOOK AND CLAW MEMBERS AT POINTS WHICH ARE SPACED TO OPPOSITE SIDES OF THE OPERATING PLANE OF SAID MEMBERS.
Claim 2
Dependent Claim
188 words
A PIPE GRAB OF THE CHARACTER DESCRIBED COMPRISING PIVOTALLY CONNECTED HOOK AND CLAW MEMBERS, SAID HOOK MEMBER HAVING A SUBSTANTIALLY STRAIGHTWAY EXTENDING BODY PORTION MERGING AT ITS LOWER END INTO A LATERALLY CURVED PORTION TERMINATING IN A GRIPPING POINT, THE CLAW MEMBER BEING SUBSTANTIALLY SICKLE-SHAPED AND ARRANGED WITH ITS OPENING DOWNWARDLY DISPOSED AND BEING PIVOTED AT ITS ONE END TO THE HOOK MEMBER AT APPROXIMATELY THE JUNCTION OF ITS BODY AND CURVED LOWER END PORTION AND TERMINATING AT ITS OTHER END IN A GRIPPING POINT AND BEING BIASED BY GRAVITY TO A NORMAL POSITION IN WHICH ITS SAID GRIPPING POINT IS SPACED FROM THE GRIPPING POINT OF THE HOOK MEMBER A DISTANCE LESS THAN THE DIAMETER OF THE PIPE TO BE GRAPPLED, A HOIST-LINE OPERATIVELY CONNECTED TO THE UPPER END OF THE HOOK MEMBER, A VERTICAL EXTENSIBLE AND CONTRACTIBLE LINKAGE SYSTEM INTERPOSED BETWEEN SAID HOIST-LINE AND SAID HOOK MEMBER, AND MEANS RESPONSIVE TO EXTENSION OF SAID LINKAGE SYSTEM FOR IMPARTING DOWNWARD STABILIZING PRESSURE ON A PIPE ENGAGED BETWEEN THE HOOK AND CLAW MEMBERS AT POINTS WHICH ARE SPACED TO OPPOSITE SIDES OF THE OPERATING PLANE OF SAID MEMBERS.
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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |