US3336068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lifting clamp
Assignee: J C Renfroe and Sons Inc
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Filing: 1965-06-15
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Granted: 1967-08-15
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Expires: 1985-06-15
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Renfroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:00
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/42; B66C1/44; B66C1/48; B66C1/62; B66C1/64; E; E04; E04G; E04G21/00; E04G21/14; E04G21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
A LIFTING CLAMP CAPABLE OF GRIPPING STRUCTURAL ARTICLES WHEN THE LIFTING FORCE IS APPLIED IN ANY OF A PLURALITY OF DIRECTIONS COMPRISING: A HOOK SHAPED CLAMP BODY HAVING A HORIZONTAL SLOT THEREIN, SAID SLOT HAVING AN INNER BASE AND AN OUTER OPEN END TO PERMIT INSERTION OF AN ARTICLE IN A DIRECTION EXTENDING FROM SAID OPEN END TOWARD SAID BASE; A JAW ASSEMBLY PIVOTALLY MOUNTED IN SAID CLAMP BODY ABOVE THE SLOT, SAID JAW ASSEMBLY INCLUDING A FIRST PIVOT PIN MOUNTED IN SAID BODY AND A JAW MOUNTED ON SAID FIRST PIVOT PIN AND HAVING A GRIPPING EDGE MOVABLE INTO A GRIPPING RELATION WITH AN ARTICLE IN THE SLOT; ABUTMENT MEANS MOUNTED ON SAID BODY AND SPACED FROM SAID FIRST PIVOT PIN; A SECOND PIVOT PIN MOUNTED ON SAID JAW AND SPACED FROM SAID FIRST PIVOT PIN, SAID FIRST PIVOT PIN BEING POSITIONED BETWEEN SAID GRIPPING EDGE OF SAID JAW AND SAID SECOND PIVOT PIN, SAID FIRST AND SECOND PIVOT PINS AND SAID ABUTMENT MEANS EXTENDING TRANSVERSE TO SAID INSERTION DIRECTION; A GENERALLY UPRIGHT SHACKLE PIVOTALLY CONNECTED AT ITS LOWER END TO SAID JAW BY SAID SECOND PIVOT PIN SO THAT A LIFTING FORCE APPLIED TO SAID SHACKLE EITHER VERTICALLY AWAY FROM SAID SLOT OR HORIZONTALLY IN
Claim 2
Dependent Claim
207 words
A LIFTING CLAMP CAPABLE OF GRIPPING STRUCTURAL ARTICLES WHEN THE LIFTING FORCE IS APPLIED IN ANY OF A PLURALITY OF DIRECTIONS COMPRISING: A HOOK SHAPED CLAMP BODY HAVING A HORIZONTAL SLOT THEREIN, SAID SLOT HAVING AN INNER BASE AND AN OUTER OPEN END TO PERMIT INSERTION OF AN ARTICLE IN A DIRECTION EXTENDING FROM SAID OPEN END TOWARD SAID BASE; A JAW ASSEMBLY PIVOTALLY MOUNTED IN SAID CLAMP BODY ABOVE THE SLOT, SAID JAW ASSEMBLY INCLUDING A FIRST PIVOT PIN MOUNTED IN SAID BODY AND A JAW MOUNTED ON SAID FIRST PIVOT PIN AND HAVING A GRIPPING EDGE MOVABLE INTO A GRIPPING RELATION WITH AN ARTICLE IN THE SLOT; ABUTMENT MEANS MOUNTED ON SAID BODY AND SPACED FROM SAID FIRST PIVOT PIN; A SECOND PIVOT PIN MOUNTED ON SAID JAW AND SPACED FROM SAID FIRST PIVOT PIN, SAID FIRST PIVOT PIN BEING POSITIONED BETWEEN SAID GRIPPING EDGE OF SAID JAW AND SAID SECOND PIVOT PIN, SAID FIRST AND SECOND PIVOT PINS AND SAID ABUTMENT MEANS EXTENDING TRANSVERSE TO SAID INSERTION DIRECTION; A GENERALLY UPRIGHT SHACKLE PIVOTALLY CONNECTED AT ITS LOWER END TO SAID JAW BY SAID SECOND PIVOT PIN SO THAT A LIFTING FORCE APPLIED TO SAID SHACKLE EITHER VERTICALLY AWAY FROM SAID SLOT OR HORIZONTALLY IN
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |