Patent US3813712A successfully refreshed from Google Patents.
US3813712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Patient stretcher transport system
Assignee: Individual
•
Filing: 1972-06-28
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Granted: 1974-06-04
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Expires: 1992-06-28
Abstract
Abstract Patient stretcher apparatus wherein the threads of the supporting sheet are angularly positioned in relation to the length of the sheet with the edges thereof loosely attached to a peripheral reinforcement, and attaching means securing certain ends of the threads to side bars at spaced intervals, the opposite ends of said certain threads not being so fastened.
Inventors
- 👤 N Bonnin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:57
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/1013; A61G7/1019; A47; A47C; A47C23/00; A47C23/12; A47C23/14; A61G1/00; A61G1/02; A61G1/0206; A61G1/0212; A61G1/0237; A61G1/0293; A61G7/104; A61G7/1046; A61G7/1049; A61G7/1057
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A flexible support comprising a sheet and a stretcher including side bars to engage the sheet and tension same, said sheet being formed of woven fabric having its threads angularly positioned in relation to the length of the sheet and engaged at the edges of the sheet on a flexible peripheral reinforcement, said sheet engaging attachment means on the side bars at spaced intervals, said attachment means being so spaced that at least one end of each thread engages said reinforcement at a point remote from the spaced attachment means, whereby the sheet can conform to the shape of a body due to deformation of the relevant portions of the reinforced edges of the sheet.
Claim 2
Dependent Claim
115 words
A flexible support comprising a sheet and a stretcher including side bars to engage the sheet and tension same, said sheet being formed of woven fabric having its threads angularly positioned in relation to the length of the sheet and engaged at the edges of the sheet on a flexible peripheral reinforcement, said sheet engaging attachment means on the side bars at spaced intervals, said attachment means being so spaced that at least one end of each thread engages said reinforcement at a point remote from the spaced attachment means, whereby the sheet can conform to the shape of a body due to deformation of the relevant portions of the reinforced edges of the sheet.
Claim 3
Dependent Claim
34 words
A support according to claim 1 wherein the reinforcement means comprise a cord held in a loop at the edge of the sheet formed by folding back the edge of the sheet and stitching.
Claim 4
Dependent Claim
28 words
A support according to claim 1 wherein the sheet has its ends reinforced by fabric gussets in which the threads are positioned longitudinally and transversely of the sheet.
Claim 5
Dependent Claim
36 words
A support according to claim 1 wherein the attachment of the sheet to the side bars is by spaced buttonholes on the sheet along the two side edges and correspondingly spaced buttons on the side bars.
Claim 6
Dependent Claim
47 words
A support according to claim 1 wherein the tensioning of the sheet is achieved by rotating the side bars of the stretcher after the sheet has been attached thereto and then locking the side bars in the tensioning position until the sheet is again to be removed.
Claim 7
Dependent Claim
87 words
A support according to claim 1 wherein the stretcher comprises a pair of side bars, bearing means on cross bars which bearing means engage the side bars to space them apart, means to allow limited rotation of the side bars, buttons on the side bars normally upwardly disposed for engagement of the sheet edges thereon prior to stretching of the sheet, but movable outwardly to the sheet stretching portion by rotation of the side bars, and means to lock the side bars in their sheet stretching position.
Claim 8
Dependent Claim
26 words
A support according to claim 6 wherein the cross bars include a plug and socket whereby the side bars can be disengaged one from the other.
Claim 9
Dependent Claim
25 words
A flexible support comprising a sheet and a stretcher according to claim 1 characterised by legs adapted to engage said stretcher and support said stretcher.
Claim 10
Dependent Claim
36 words
A flexible support comprising a sheet and a stretcher according to claim 1 characterised by legs and by sockets on said stretcher to engage said legs, said legs including extensions adapted to non-rotationally engage said sockets.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |