Patent US4176874A successfully refreshed from Google Patents.
US4176874A
Expired / Lapsed
US
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Lifting rings for chain slings
Assignee: STAS Societe Technique dAccessoires Specialises SA
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Filing: 1978-07-06
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Granted: 1979-12-04
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Expires: 1998-07-06
Abstract
Abstract A lifting ring for a chain sling comprises two generally L-shaped lugs, located on opposite sides of the central plane of the ring body. The upright limbs of the lugs extend partly along the respective sides of the ring body and the lower limbs of the lugs extend partly along the lower side of the ring body towards the central plane. Each lug is provided with an opening of such size and configuration that a chain link can pass through the opening, the width of the opening being less than the width of a chain link whereby withdrawal of the link from the opening when the chain is under tension is prevented by the adjacent link at right angles thereto.
Inventors
- 👤 Jean F. Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:19
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/12; B66C1/125; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A lifting ring for a chain sling, said ring comprising a body having side portions and a bottom portion, two lugs rigid with the body, each lug having means defining an elongate opening whose width is greater than the thickness of the chain links, but smaller than their width and terminating at the top in an opening of greater width than that of the said links, said lugs being perpendicular to the plane of the body and being bent in such a manner as to extend partly over the side portions of the body and partly over the bottom portion of the body, the bottom portion of the said lugs being directed towards the central plane of the ring.
Claim 2
Dependent Claim
119 words
A lifting ring for a chain sling, said ring comprising a body having side portions and a bottom portion, two lugs rigid with the body, each lug having means defining an elongate opening whose width is greater than the thickness of the chain links, but smaller than their width and terminating at the top in an opening of greater width than that of the said links, said lugs being perpendicular to the plane of the body and being bent in such a manner as to extend partly over the side portions of the body and partly over the bottom portion of the body, the bottom portion of the said lugs being directed towards the central plane of the ring.
References Cited (Backward Citations)
US569448A
Cited
US1656676A
Cited
US2669761A
Cited
FR1404546A
Cited
CH576909A5
Cited
US4060269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |