Patent US3837697A successfully refreshed from Google Patents.
US3837697A
Expired / Lapsed
US
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Adjustable multi-leg load-carrying sling apparatus
Assignee: Individual
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Filing: 1972-12-18
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Granted: 1974-09-24
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Expires: 1992-12-18
Abstract
Abstract A multi-leg sling apparatus is presented for lifting loads having individual sling legs adjustable in length in a simple, and highly reliable manner to enable balanced and unbalanced loads to be supported in a variety of different orientations.
Inventors
- 👤 D Goodrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:43
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/12; B66C1/125
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
153 words
An adjustable load-carrying sling apparatus comprising: at least two pairs of flexible sling legs having means at their lower ends for attachment to a load; each pair of sling legs being fabricated of a single length of continuous and uninterrupted flexible line material arranged in criss-cross relation at intermediate portions thereof; each leg having a plurality of locking elements fixedly secured at spaced-apart positions along at least a selected portion of its length; a lifting saddle member for supporting both lengths of flexible material at their intermediate criss-cross positions forming at least four sling legs; a means for locking the saddle to any selected one of said elements on both of said sling legs where they criss-cross for varying the length of the respective legs; whereby the individual lengths of the sling legs can be readily adjusted and positively locked in position to accommodate different orientations of the load along two transverse axes.
Claim 2
Dependent Claim
153 words
An adjustable load-carrying sling apparatus comprising: at least two pairs of flexible sling legs having means at their lower ends for attachment to a load; each pair of sling legs being fabricated of a single length of continuous and uninterrupted flexible line material arranged in criss-cross relation at intermediate portions thereof; each leg having a plurality of locking elements fixedly secured at spaced-apart positions along at least a selected portion of its length; a lifting saddle member for supporting both lengths of flexible material at their intermediate criss-cross positions forming at least four sling legs; a means for locking the saddle to any selected one of said elements on both of said sling legs where they criss-cross for varying the length of the respective legs; whereby the individual lengths of the sling legs can be readily adjusted and positively locked in position to accommodate different orientations of the load along two transverse axes.
Claim 3
Dependent Claim
144 words
An adjustable load-carrying sling apparatus comprising: at least two pairs of flexible sling legs having means at their lower ends for attachment to a load; each pair of legs being fabricated of a single length of continuous and uninterrupted flexible line material; said pairs of legs being arranged in criss-cross relation at intermediate portions; each leg having a plurality of looped elements fixedly secured at spaced-apart positions along at least a selected portion of its length forming the flexible line; a lifting saddle member for supporting said pairs of legs at their intermediate positions forming at least four sling legs; said saddle having a single pin adjustably positioned through a selected looped element in each pair of legs at their criss-crossed portions; whereby the individual lengths of the sling legs can be readily adjusted and positively locked in position to accommodate load lifting conditions.
Claim 4
Dependent Claim
144 words
An adjustable load-carrying sling apparatus comprising: at least two pairs of flexible sling legs having means at their lower ends for attachment to a load; each pair of legs being fabricated of a single length of continuous and uninterrupted flexible line material; said pairs of legs being arranged in criss-cross relation at intermediate portions; each leg having a plurality of looped elements fixedly secured at spaced-apart positions along at least a selected portion of its length forming the flexible line; a lifting saddle member for supporting said pairs of legs at their intermediate positions forming at least four sling legs; said saddle having a single pin adjustably positioned through a selected looped element in each pair of legs at their criss-crossed portions; whereby the individual lengths of the sling legs can be readily adjusted and positively locked in position to accommodate load lifting conditions.
Claim 5
Dependent Claim
33 words
The sling apparatus of claim 2 wherein each of said flexible lines are formed of at least two strands of braided material which are alternately threaded through each other to form the loops.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |