US4524474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption pad
Assignee: Duni Bila AB
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Filing: 1983-04-26
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Granted: 1985-06-25
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Expires: 2003-04-26
Abstract
Abstract An absorption pad useful for protecting a bed, furniture, or the like, includes a lower liquid impervious material layer and an upper liquid absorbent material layer laminated thereto. The liquid absorbent layer is impregnated with strings or filaments of a liquid resistant agent which does not stiffen the pad. The strings or filaments form a grid-like pattern for defining compartments between the strings over preferably the entire area of the absorption pad, thereby for limiting the spread of liquid over the pad. The layers are laminated together, and may be laminated by an adhesive. The laminating areas may be in a filament pattern corresponding to and overlapping the filament pattern of the strings of the liquid resistant agent.
Inventors
- 👤 Sven A. T. Svensson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:59
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/48; A61F5/485; B; B32; B32B; B32B7/00; B32B7/02; B32B7/04; B32B7/12; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/537; A61F13/53704; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51409; B32B2305/00; B32B2305/38; B32B2307/00; B32B2307/70; B32B2307/726
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
An absorption pad for protecting a bed, furniture, or the like, the pad comprising: a liquid impervious material layer, a liquid absorbent layer affixed over the impervious layer; a liquid resistant agent impregnated into the absorbent material layer; the impregnated agent being arrayed over the absorbent material layer in a plurality of strings of the agent for defining a pattern of compartments separated by the strings for limiting the spread of liquid over the pad the layers being laminated together in such a manner that liquid migration under the strings is prevented, whereby after a compartment is saturated with liquid, the liquid overflows over the strings into adjacent compartments.
Claim 2
Dependent Claim
109 words
An absorption pad for protecting a bed, furniture, or the like, the pad comprising: a liquid impervious material layer, a liquid absorbent layer affixed over the impervious layer; a liquid resistant agent impregnated into the absorbent material layer; the impregnated agent being arrayed over the absorbent material layer in a plurality of strings of the agent for defining a pattern of compartments separated by the strings for limiting the spread of liquid over the pad the layers being laminated together in such a manner that liquid migration under the strings is prevented, whereby after a compartment is saturated with liquid, the liquid overflows over the strings into adjacent compartments.
Claim 3
Dependent Claim
22 words
The absorption pad of claim 1, wherein the strings are arrayed to define the compartments over the entire area of the pad.
Claim 4
Dependent Claim
25 words
The absorption pad of claim 1, wherein the strings of liquid resistant agent extend both transversely and longitudinally of the pad to form the compartments.
Claim 5
Dependent Claim
24 words
The absorption pad of claim 3, wherein the strings of agent are placed to define transversely elongate compartments and to define longitudinally elongate compartments.
Claim 6
Dependent Claim
29 words
The absorption pad of claim 4, wherein the longitudinally elongate compartments are disposed to define rows of the longitudinally elongate compartments parallel to the lateral edges of the pad.
Claim 7
Dependent Claim
27 words
The absorption pad of claim 5, wherein there is a respective row of longitudinally elongate compartments disposed at each of the opposite lateral edges of the pad.
Claim 8
Dependent Claim
16 words
The absorption pad of claim 1, wherein the lamination of the layers is with an adhesive.
Claim 9
Dependent Claim
14 words
The absorption pad of claim 1, wherein the lamination together uses a filament pattern.
Claim 10
Dependent Claim
14 words
The absorption pad of claim 8, wherein the lamination together is with an adhesive.
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) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |