US4391010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable draw sheet
Assignee: WYANT Corp
•
Filing: 1981-08-18
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Granted: 1983-07-05
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Expires: 2001-08-18
Abstract
Abstract A disposable draw sheet for use on bed mattresses in which a thin sheet of liquid impervious material supports a liquid absorbent material layer. The liquid impervious sheet is wide enough to be tucked under each side of the mattress. Pockets formed by doubling the longitudinal margins of the sheet back upon themselves and tacking them at spaced discrete areas provide easy application and removal of the draw sheets.
Inventors
- 👤 Albert F. Kronman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:51
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/48; A61F5/485; A47; A47G; A47G9/00; A47G9/02; A47G9/0238; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F2013/53445
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
149 words
A disposable draw sheet for application to the mattress of a bed comprising a thin sheet of liquid impervious material, a top surface, a bottom surface, longitudinal margins on said sheet and a sheet width substantially greater than that of the mattress to which it is to be applied so that said sheet margins may be tucked under said mattress on opposite sides thereof, a layer of liquid absorbent material carried by the top surface of the sheet across the midregion of said sheet, said absorbent material being of a width less than the top of the mattress, a doubled back portion on the longitudinal margins of the sheet, and means to secure the doubled back portion of the said margins to the top surface of the said sheet in at least two spaced discrete areas to form at least one pocket in each of the doubled back portions.
Claim 2
Dependent Claim
149 words
A disposable draw sheet for application to the mattress of a bed comprising a thin sheet of liquid impervious material, a top surface, a bottom surface, longitudinal margins on said sheet and a sheet width substantially greater than that of the mattress to which it is to be applied so that said sheet margins may be tucked under said mattress on opposite sides thereof, a layer of liquid absorbent material carried by the top surface of the sheet across the midregion of said sheet, said absorbent material being of a width less than the top of the mattress, a doubled back portion on the longitudinal margins of the sheet, and means to secure the doubled back portion of the said margins to the top surface of the said sheet in at least two spaced discrete areas to form at least one pocket in each of the doubled back portions.
Claim 3
Dependent Claim
15 words
A draw sheet according to claim 1 in which the sheet is a plastic material.
Claim 4
Dependent Claim
17 words
A draw sheet according to claim 2 in which the doubled back securing means is a weld.
Claim 5
Dependent Claim
26 words
A draw sheet according to claim 1 in which the liquid absorbent material is made of cotton fibers bonded to the top surface of the sheet.
Claim 6
Dependent Claim
27 words
A draw sheet according to claim 1 in which the doubled back portion of the margins form a thickened inner edge on each of the said margins.
Claim 7
Dependent Claim
20 words
A draw sheet according to claim 1 in which the sheet has a thickness of the order of 1 mil.
Claim 8
Dependent Claim
17 words
A draw sheet according to claim 1 in which the doubled back securing means is an adhesive.
Claim 9
Dependent Claim
31 words
A draw sheet according to claim 1 in which the doubled back portion of the margins are secured at a plurality of spaced areas to form a series of pockets therebetween.
References Cited (Backward Citations)
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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) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |