US4128686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Management of incontinence
Assignee: Individual
•
Filing: 1977-01-14
•
Granted: 1978-12-05
•
Expires: 1997-01-14
Abstract
Abstract An assembly for the management of incontinence with an absorbent hydrophilic layer behind a hydrophobic layer. The hydrophilic layer is formed of aligned cellulosic staple fibers of at least 0.5 in length and denier in the range of 2 to 7 in a cross-laid web and needled to form a felt which will absorb at least 350% by weight of urine based upon its dry weight.
Inventors
- 👤 William Kyle
- 👤 Bruce H. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:41
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/48; A61F5/485; A61G; A61G7/00; A61G7/02; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/539; A61F13/56; A61F13/64; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/530802; A61F2013/53445; A61F2013/53966; A61F2013/5661; A61F2013/5694; Y; Y10; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/159; Y10T442/16
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
129 words
In an assembly for the management of incontinence comprising at least one layer of non-absorbent hydrophobic textile material through which urine can freely pass and at least one layer of absorbent hydrophilic textile material behind the said at least one non-absorbent layer to receive and absorb urine passing through the said at least one non-absorbent layer, the improvement comprised in that the abosrbent layer is formed of aligned cellulosic staple fibers of at least 0.5 inch length and denier in the range 2 to 7 formed into a cross-laid web and needled at 1500 to 2000 punchings per square inch to form a felt which will absorb at least 350% by weight of urine based upon its dry weight and will disperse urine laterally by capillarity throughout the felt.
Claim 2
Dependent Claim
129 words
In an assembly for the management of incontinence comprising at least one layer of non-absorbent hydrophobic textile material through which urine can freely pass and at least one layer of absorbent hydrophilic textile material behind the said at least one non-absorbent layer to receive and absorb urine passing through the said at least one non-absorbent layer, the improvement comprised in that the abosrbent layer is formed of aligned cellulosic staple fibers of at least 0.5 inch length and denier in the range 2 to 7 formed into a cross-laid web and needled at 1500 to 2000 punchings per square inch to form a felt which will absorb at least 350% by weight of urine based upon its dry weight and will disperse urine laterally by capillarity throughout the felt.
Claim 3
Dependent Claim
19 words
The assembly of claim 1 wherein the said felt weighs in the range 200 to 1000 g/m 2 .
Claim 4
Dependent Claim
32 words
The assembly of claim 2 wherein the cellulosic staple fibres have a length of at least 1 inch and the said felt weighs in the range 500 to 850 g/m 2 .
Claim 5
Dependent Claim
33 words
The assembly of claim 2 wherein the cellulosic staple fibres have a length of about 1.5 inches and a denier of about 2.5 and the said felt weighs about 650 g/m 2 .
Claim 6
Dependent Claim
13 words
The assembly of claim 1 wherein the cellulosic staple fibres are rayon fibres.
Claim 7
Dependent Claim
19 words
The assembly of claim 1 wherein the needle punching is carried out at about 1700 punchings per square inch.
Claim 8
Dependent Claim
17 words
The assembly of claim 1 wherein the staple fibres are needled to a scrim or weft support.
Claim 9
Dependent Claim
13 words
The assembly of claim 7 wherein the scrim is a woven polypropylene scrim.
Claim 10
Dependent Claim
36 words
The assembly of claim 1 wherein the hydrophobic material is a brushed nylon formed of a blend of 20/1 monofilament and 40/13 multifilament denier fibres and has a weight of 50 to 250 g/m 2 .
Claim 11
Dependent Claim
19 words
The assembly of claim 1 wherein the absorbent and non-absorbent layers are combined as an integral needle felted material.
Claim 12
Dependent Claim
46 words
The assembly of claim 10 wherein the hydrophobic material is formed of staple fibres of at least 0.5 inch length and denier in the range 2 to 7 needle felted into a hydrophobic layer having a weight in the range 50 to 300 g/m 2 .
Claim 13
Dependent Claim
34 words
The assembly of claim 11 wherein the hydrophobic fibres are of at least 1 inch length and a denier of about 2.5 and the felted layer thereof weighs 150 to 200 g/m 2 .
Claim 14
Dependent Claim
12 words
The assembly of claim 11 wherein the hydrophobic fibres are polyester fibres.
Claim 15
Dependent Claim
15 words
The assembly of claim 1 wherein the absorbent and non absorbent layers are quilted together.
Claim 16
Dependent Claim
24 words
The assembly of claim 1 adapted for use on a bed and having attachment means for holding the assembly in position on the bed.
Claim 17
Dependent Claim
24 words
The assembly of claim 1 adapted for use on a chair and having attachment means for holding the assembly in position on the chair.
Claim 18
Dependent Claim
33 words
The assembly of claim 16 wherein the hydrophobic material is formed into an envelope to cover a chair seat and at least one layer of the absorbent material is inserted into the envelope.
Claim 19
Dependent Claim
93 words
An assembly for the management of incontinence comprising a non-absorbent urine-permeable layer of a brushed nylon formed of a blend of 20/1 monofilament and 40/13 multifilament denier fibres and having a weight of 50 to 250 g/m 2 , a scrim-reinforced urine-absorbent layer formed from viscose rayon staple fibres having a length about 1.5 inches and a denier of about 2.5 by forming aligned fibres into a cross-laid web and needling the web into a woven polypropylene scrim to form a felt having a weight of rayon of about 650 g/m 2 .
Claim 20
Dependent Claim
93 words
An assembly for the management of incontinence comprising a non-absorbent urine-permeable layer of a brushed nylon formed of a blend of 20/1 monofilament and 40/13 multifilament denier fibres and having a weight of 50 to 250 g/m 2 , a scrim-reinforced urine-absorbent layer formed from viscose rayon staple fibres having a length about 1.5 inches and a denier of about 2.5 by forming aligned fibres into a cross-laid web and needling the web into a woven polypropylene scrim to form a felt having a weight of rayon of about 650 g/m 2 .
Claim 21
Dependent Claim
115 words
An assembly for the management of incontinence comprising an integral needle felted material having an upper non-absorbent urine-permeable layer of polyester fibres of at least 1 inch length and of about 2.5 denier and a weight of about 170 g/m 2 needled to a urine-absorbent layer formed from viscose rayon staple fibres of about 1.5 inch length and about 2.5 denier by forming aligned fibres into a cross-laid web and needling the web into a woven polypropylene scrim to form a felt having a weight of rayon of about 650 g/m 2 , in which pegs of substantially vertical polyester fibres surrounded by substantially horizontal polyester fibres extend into but not through the rayon layer.
Claim 22
Dependent Claim
115 words
An assembly for the management of incontinence comprising an integral needle felted material having an upper non-absorbent urine-permeable layer of polyester fibres of at least 1 inch length and of about 2.5 denier and a weight of about 170 g/m 2 needled to a urine-absorbent layer formed from viscose rayon staple fibres of about 1.5 inch length and about 2.5 denier by forming aligned fibres into a cross-laid web and needling the web into a woven polypropylene scrim to form a felt having a weight of rayon of about 650 g/m 2 , in which pegs of substantially vertical polyester fibres surrounded by substantially horizontal polyester fibres extend into but not through the rayon layer.
References Cited (Backward Citations)
US3301257A
Cited
US3316669A
Cited
US3545442A
Cited
US3620894A
Cited
US3649429A
Cited
US3888248A
Cited
US3886941A
Cited
US4063558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |