US4742588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lifting sling
Assignee: Impro Ltd
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Filing: 1987-08-07
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Granted: 1988-05-10
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Expires: 2007-08-07
Abstract
Abstract A one-piece lifting sling for use with an invalid hoist has an upper end head-support extension which extends beyond attachment points of upper suspension means. The sling also has at least one pocket extending substantially throughout the extension and for a distance beyond a line joining the attachment points, a removable sheet or strip of substantially rigid but resiliently flexible material being housed in the pocket to provide the required head support.
Inventors
- 👤 David R. James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:23
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/1049; A61G7/1051; A61G7/1061; A61G2200/00; A61G2200/30; A61G2200/32; A61G2200/34; A61G7/1073; A61G7/1076; A61G7/1078
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
A one-piece lifting sling for use with an invalid hoist, comprising two upper suspension means having attachment points in a shoulder region of the sling, two lower suspension means adjacent a bottom end of the sling, an upper end head-support extension extending beyond said attachment points of the upper suspension means, at least one pocket extending substantially throughout said extension and for a distance towards said bottom end of the sling beyond a line joining said attachment points, and a removable sheet or strip of substantially rigid but resiliently flexible material which is housed in the pocket so as to form a head support for a supported invalid.
Claim 2
Dependent Claim
108 words
A one-piece lifting sling for use with an invalid hoist, comprising two upper suspension means having attachment points in a shoulder region of the sling, two lower suspension means adjacent a bottom end of the sling, an upper end head-support extension extending beyond said attachment points of the upper suspension means, at least one pocket extending substantially throughout said extension and for a distance towards said bottom end of the sling beyond a line joining said attachment points, and a removable sheet or strip of substantially rigid but resiliently flexible material which is housed in the pocket so as to form a head support for a supported invalid.
Claim 3
Dependent Claim
56 words
A sling according to claim 1, wherein said pocket is one of two pockets spaced laterally of the sling and each containing a removable strip of said substantially rigid but resiliently flexible material, the two pockets together spanning the width of the head support extension when it is engaged by the head of a supported invalid.
Claim 4
Dependent Claim
18 words
A sling according to claim 1, wherein said substantially rigid but resiliently flexible material is a plastic material.
Claim 5
Dependent Claim
27 words
A sling according to claim 3, wherein said removable strip of substantially rigid but resiliently flexible plastic material is approximately 400 mm long×50 mm wide×3 mm thick.
Claim 6
Dependent Claim
92 words
A sling according to claim 1, in combination with a sling hanger pivotable about a horizontal axis and presenting a first pair of sling attachment points disposed to one side of the horizontal axis and a second pair of sling attachment points disposed on the opposite side of the axis, with the upper suspension means at the shoulder region of the sling being attached to one of the pairs of attachment points, and said suspension means at the lower end of the sling being attached to the other pair of attachment points.
Claim 7
Dependent Claim
40 words
A sling according to claim 1, wherein the sling comprises a main portion which supports the body of an invalid, and lower end dependent leg portions which in use respectively extend beneath and upwardly between the thighs of an invalid.
Claim 8
Dependent Claim
29 words
A sling according to claim 1, wherein the sling is provided with darts or otherwise tailored so that it conforms more readily to the body shape of the invalid.
Claim 9
Dependent Claim
39 words
A sling according to claim 1, wherein the suspension means of the sling comprise short suspension tapes permanently secured to the sling and terminating in attachment members adapted to hook on to the attachment points of a sling hanger.
Claim 10
Dependent Claim
46 words
A sling according to claim 1, wherein said suspension means comprise short suspension tapes permanently secured to the body of the sling and terminating in attachment members which comprise keyhole plates adapted to hook on to headed studs which form attachment points of a sling hanger.
Claim 11
Dependent Claim
69 words
A sling according to claim 1, wherein said suspension means comprise short suspension tapes permanently secured to the body of the sling and terminating in attachment members which comprise keyhole plates adapted to hook on to headed studs which form attachment points of a sling hanger, said keyhole plates having slots through which extension tapes can be threaded to extend the length of the suspension means of the sling.
Claim 12
Dependent Claim
18 words
A sling according to claim 1 wherein said strip of substantially rigid but resiliently flexible material is polypropylene.
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) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |