Patent US3055368A successfully refreshed from Google Patents.
Patent US4789193A successfully refreshed from Google Patents.
US4789193A
Expired / Lapsed
US
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Universal sling fitting
Assignee: LIFT-ALL COMPANY Inc
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Filing: 1987-10-19
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Granted: 1988-12-06
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Expires: 2007-10-19
Abstract
Abstract An end fitting for a lifting sling shaped so that the identical fitting can be used at both ends of the sling, because it is constructed so that an outside dimension will slip through the opening of the fitting. The opening is longer than the end fitting's width and has one end curved to accommodate a crane hook while the other end is straight so that the sling web can be attached there.
Inventors
- 👤 William D. Meals
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/12; B66C1/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
An end fitting for a lifting sling comprising: a continuous planar structure, with its length dimension exceeding its width dimension, shaped to enclose an opening, with a first boundary of the opening being a straight surface so that a web will wrap around the straight surface and the adjacent part of the structure, and a second boundary of the opening, which is located opposite from the first boundary, being curved to accept a crane hook, the opening being dimensioned so that the longest dimension of the opening exceeds the dimension of the width of the planar structure; and two protrusions from the structure into the opening, the protrusions being located near the first boundary of the opening so as to limit the movement of a web which is wrapped around the first boundary.
Claim 2
Dependent Claim
133 words
An end fitting for a lifting sling comprising: a continuous planar structure, with its length dimension exceeding its width dimension, shaped to enclose an opening, with a first boundary of the opening being a straight surface so that a web will wrap around the straight surface and the adjacent part of the structure, and a second boundary of the opening, which is located opposite from the first boundary, being curved to accept a crane hook, the opening being dimensioned so that the longest dimension of the opening exceeds the dimension of the width of the planar structure; and two protrusions from the structure into the opening, the protrusions being located near the first boundary of the opening so as to limit the movement of a web which is wrapped around the first boundary.
Claim 3
Dependent Claim
19 words
The end fitting of claim 1 wherein the planar continuous structure is shaped as a rectangle with rounded corners.
Claim 4
Dependent Claim
24 words
The end fitting of claim 1 wherein the longest dimension of the opening is the dimension between the first boundary and the second boundary.
Claim 5
Dependent Claim
28 words
The end fitting of claim 1 wherein the other boundaries of the opening comprise essentially straight surfaces joining the protrusions into the opening to the curved second boundary.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-06 | 1992-06-06 | 1992-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-06 | 1996-06-06 | 1996-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-06 | 2000-06-06 | 2000-12-06 | $7700.00 | Window Closed / Lapsed |