US3178219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erection clamp
Assignee: J C Renfroe and Sons Inc
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Filing: 1962-06-27
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Granted: 1965-04-13
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Expires: 1982-06-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Renfroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:33
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/62; B66C1/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A CLAMP FOR LIFTING A FLANGED STRUCTURAL MEMBER WHICH COMPRISES A BODY DEFINING A HORIZONTAL SLOT OPEN ALONG ONE EDGE TO RECEIVE LATERALLY INTO SAID SLOT ONE SIDE ONLY OF A HORIZONTAL FLANGE OF THE STRUCTURAL MEMBER TO BE LIFTED, SAID BODY INCLUDING UPPER AND LOWER BODY PORTIONS DEFINING OPPOSED JAW MEANS ABOVE AND BELOW SAID SLOT RESPECTIVELY, SAID LOWER BODY PORTION HAVING A CONNECTING ARM CONNECTED TO SAID LOWER JAW MEANS AND EXTENDING LATERALLY AROUND SAID SLOT OPPOSITE SAID OPEN EDGE AND ABOVE SAID SLOT, SAID ARM BEING PIVOTALLY CONNECTED TO SAID UPPER BODY PORTION TO OPEN AND CLOSE SAID OPPOSED JAW MEANS, AND SHACKLE MEANS CONNECTED TO SAID UPPER BODY PORTION AND SAID CONNECTING ARM TO APPLY A SUBSTANTIAL CLOSING FORCE TO SAID JAW MEANS WHEN A VERTICAL LIFTING FORCE IS APPLIED TO SAID SHACKEL MEANS AND TO RETAIN SAID CLOSING FORCE WHEN SAID MEMBER IS RAISED BY SAID LIFTING FORCE, SAID CONNECTIONS BETWEEN SAID SHACKLE MEANS AND SAID BODY PORTION AND SAID CONNECTING ARM BEING LOCATED TO CAUSE SAID LIFTING FORCE TO BE APPLIED IN SUBSTANTIAL VERTICAL ALIGNMENT WITH SAID JAW MEANS.
Claim 2
Dependent Claim
185 words
A CLAMP FOR LIFTING A FLANGED STRUCTURAL MEMBER WHICH COMPRISES A BODY DEFINING A HORIZONTAL SLOT OPEN ALONG ONE EDGE TO RECEIVE LATERALLY INTO SAID SLOT ONE SIDE ONLY OF A HORIZONTAL FLANGE OF THE STRUCTURAL MEMBER TO BE LIFTED, SAID BODY INCLUDING UPPER AND LOWER BODY PORTIONS DEFINING OPPOSED JAW MEANS ABOVE AND BELOW SAID SLOT RESPECTIVELY, SAID LOWER BODY PORTION HAVING A CONNECTING ARM CONNECTED TO SAID LOWER JAW MEANS AND EXTENDING LATERALLY AROUND SAID SLOT OPPOSITE SAID OPEN EDGE AND ABOVE SAID SLOT, SAID ARM BEING PIVOTALLY CONNECTED TO SAID UPPER BODY PORTION TO OPEN AND CLOSE SAID OPPOSED JAW MEANS, AND SHACKLE MEANS CONNECTED TO SAID UPPER BODY PORTION AND SAID CONNECTING ARM TO APPLY A SUBSTANTIAL CLOSING FORCE TO SAID JAW MEANS WHEN A VERTICAL LIFTING FORCE IS APPLIED TO SAID SHACKEL MEANS AND TO RETAIN SAID CLOSING FORCE WHEN SAID MEMBER IS RAISED BY SAID LIFTING FORCE, SAID CONNECTIONS BETWEEN SAID SHACKLE MEANS AND SAID BODY PORTION AND SAID CONNECTING ARM BEING LOCATED TO CAUSE SAID LIFTING FORCE TO BE APPLIED IN SUBSTANTIAL VERTICAL ALIGNMENT WITH SAID JAW MEANS.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |