US3856012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized absorbent pad
Assignee: CANADIAN PACIFIC FOREST PRODUCTS LIMITED/PRODUITS FORESTIERS CANADIEN PACIFIQUE Ltee
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Filing: 1972-12-08
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Granted: 1974-12-24
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Expires: 1992-12-08
Abstract
Abstract An absorbent pad comprising fluff that is stabilized against slumping or lumpiness by means of a plurality of filaments incorporated into the pad with a network of adhesive bonds.
Inventors
- 👤 R Macdonald
- 👤 N Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:23
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/539; A61F13/534; A61F2013/530131; A61F2013/530138; A61F2013/530153; A61F2013/530182; A61F2013/53445; A61F2013/53463; A61F2013/53908
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
A stabilized absorbent pad comprising a quantity of wood fibers defining said pad, a plurality of filaments spaced apart from each other and extending from portion to portion of said pad, water soluble adhesive interposed between each of said filaments and adjacent fibers, said adhesive and filaments defining a bond network wherein the tenacity of adhesion of said fibers to a filament decreases as a function of their proximity to said filament and wherein those fibers in one portion of said pad that are adhesively connected to a particular filament are further connected through said filament to such other portions of said pad to which said filament extends thereby stabilizing said pad against migration of said fibers within said pad.
Claim 2
Dependent Claim
120 words
A stabilized absorbent pad comprising a quantity of wood fibers defining said pad, a plurality of filaments spaced apart from each other and extending from portion to portion of said pad, water soluble adhesive interposed between each of said filaments and adjacent fibers, said adhesive and filaments defining a bond network wherein the tenacity of adhesion of said fibers to a filament decreases as a function of their proximity to said filament and wherein those fibers in one portion of said pad that are adhesively connected to a particular filament are further connected through said filament to such other portions of said pad to which said filament extends thereby stabilizing said pad against migration of said fibers within said pad.
Claim 3
Dependent Claim
31 words
The absorbent pad of claim 1 and including a tissue sheet disposed on at least one flat side of said pad, and wherein said filaments are bonded to said tissue sheet.
Claim 4
Dependent Claim
201 words
An absorbent pad comprising a first tissue sheet, a plurality of wood fibers divellicated from a pulp batt and air laid in random orientation upon said tissue sheet to define said pad, said fibers being mechanically associated one with another by a force insufficient to withstand the normal working of said pad when in use, a plurality of fibrous filaments spaced apart from each other extending from portion to portion of said pad, water soluble adhesive extending tentacularly from each of said filaments into said pad by a distance less than about 1/4 inch as measured radially from the longitudinal axis of a filament, said adhesive and filaments defining a bond network wherein the tenacity of adhesion of those fibers disposed between adjacent spaced apart filaments to one of said filaments generally decreases as a function of the proximity of such fibers from its closest filament so that said fibers are anchored to a filament and those fibers in one portion of said pad that are anchored to a particular filament are further connected through such filament to such other portions of said pad to which said filament extends thereby stabilizing said pad against migration of said fibers within said pad.
Claim 5
Dependent Claim
201 words
An absorbent pad comprising a first tissue sheet, a plurality of wood fibers divellicated from a pulp batt and air laid in random orientation upon said tissue sheet to define said pad, said fibers being mechanically associated one with another by a force insufficient to withstand the normal working of said pad when in use, a plurality of fibrous filaments spaced apart from each other extending from portion to portion of said pad, water soluble adhesive extending tentacularly from each of said filaments into said pad by a distance less than about 1/4 inch as measured radially from the longitudinal axis of a filament, said adhesive and filaments defining a bond network wherein the tenacity of adhesion of those fibers disposed between adjacent spaced apart filaments to one of said filaments generally decreases as a function of the proximity of such fibers from its closest filament so that said fibers are anchored to a filament and those fibers in one portion of said pad that are anchored to a particular filament are further connected through such filament to such other portions of said pad to which said filament extends thereby stabilizing said pad against migration of said fibers within said pad.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |