Patent US4352214A successfully refreshed from Google Patents.
US4352214A
Expired / Lapsed
US
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Toilet seat cover
Assignee: RB Kunststoffpatent-Verwertungs AG
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Filing: 1980-07-11
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Granted: 1982-10-05
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Expires: 2000-07-11
Abstract
Abstract A toilet seat cover is provided in the form of a blank consisting of at least one layer having a central opening, said layer being formed of a non-porous flexible foil such as of polyvinyl alcohol which foil is soluble in an aqueous medium, the foil being provided on one side with fibres such as of textile waste which fibres are bonded to the foil but freely exposed over part of their length. An endless chain of such covers is also provided.
Inventors
- 👤 Roland Belz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:50
CPC Classifications
A; A47; A47K; A47K13/00; A47K13/14; A47K13/18; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10S428/913; Y10T; Y10T428/00; Y10T428/15; Y10T428/21; Y10T428/218; Y10T428/23907; Y10T428/23943; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/26; Y10T428/266; Y10T428/269; Y10T428/29; Y10T428/2913; Y10T428/298; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31935
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
143 words
Toilet seat cover in the form of a blank consisting of at least one layer having a central opening, which layer comprises a non-porous flexible foil of a material which is soluble in an aqueous medium, fibrous material means bonded to one side of said foil, the fibres of said fibrous material means being freely exposed on the surface of the foil cover over part of their length, for providing at least a minimum barrier against moisture penetrating to the foil, and a sealing layer of waterproof and water insoluble material on that side of the foil which is remote from the fibres, wherein said fibrous means comprises individual fibres which are flocked to said foil to be bonded thereto over part of their length, and wherein said individual fibres are released when said cover is placed in water and said foil dissolves.
Claim 2
Dependent Claim
143 words
Toilet seat cover in the form of a blank consisting of at least one layer having a central opening, which layer comprises a non-porous flexible foil of a material which is soluble in an aqueous medium, fibrous material means bonded to one side of said foil, the fibres of said fibrous material means being freely exposed on the surface of the foil cover over part of their length, for providing at least a minimum barrier against moisture penetrating to the foil, and a sealing layer of waterproof and water insoluble material on that side of the foil which is remote from the fibres, wherein said fibrous means comprises individual fibres which are flocked to said foil to be bonded thereto over part of their length, and wherein said individual fibres are released when said cover is placed in water and said foil dissolves.
Claim 3
Dependent Claim
17 words
A cover as claimed in claim 1 in which the said fibrous material means comprises textile waste.
Claim 4
Dependent Claim
26 words
A cover as claimed in claim 2 in which the fibres of the fibrous material means have an average length of about 0.05 to 0.5 mm.
Claim 5
Dependent Claim
21 words
A cover as claimed in claim 1 in which the flexible foil has a thickness of about 5 to 20 micron.
Claim 6
Dependent Claim
21 words
A cover as claimed in claim 4 in which the flexible foil has a thickness of about 7 to 20 micron.
Claim 7
Dependent Claim
16 words
A cover as claimed in claim 1 in which the foil is made of polyvinyl alcohol.
Claim 8
Dependent Claim
37 words
A cover as claimed in claim 1, in which the said sealing layer consists of polyvinylchloride, acetal of polyvinyl alcohol and butyraldehyde, polyvinyl acetate or a copolymer of vinyl acetate with a small amount of crotonic acid.
Claim 9
Dependent Claim
26 words
A cover according to claim 1, wherein said fibres are embedded in said foil over part of their lengths to be individually bonded to said foil.
Claim 10
Dependent Claim
129 words
A toilet seat cover in the form of a blank consisting of at least one layer with a central opening, which layer is formed of a thin foil of polyvinyl alcohol, and is provided on one side with a fibrous cellulosic material constituted of textile waste, the fibres having an average length of 0.05 to 0.5 mm, said fibres being flocked to and partly exposed on the surface of the foil, said foil having a thickness of about 5 to 20 micron and the weight ratio of the foil to the fibres of the fibrous material being from 2:1 to 1:5, and wherein said cover further comprises a thin sealing layer of waterproof and water insoluble material on that side of the foil which is remote from the fibres.
Claim 11
Dependent Claim
129 words
A toilet seat cover in the form of a blank consisting of at least one layer with a central opening, which layer is formed of a thin foil of polyvinyl alcohol, and is provided on one side with a fibrous cellulosic material constituted of textile waste, the fibres having an average length of 0.05 to 0.5 mm, said fibres being flocked to and partly exposed on the surface of the foil, said foil having a thickness of about 5 to 20 micron and the weight ratio of the foil to the fibres of the fibrous material being from 2:1 to 1:5, and wherein said cover further comprises a thin sealing layer of waterproof and water insoluble material on that side of the foil which is remote from the fibres.
Claim 12
Dependent Claim
17 words
A cover as claimed in claim 9 in which the fibres are directly fixed in the foil.
Claim 13
Dependent Claim
16 words
A cover as claimed in claim 9 in which the fibres are glued to the foil.
Claim 14
Dependent Claim
27 words
A cover as claimed in claim 9 in which that side of the cover which is remote from the fibres is also provided with a bonding agent.
Claim 15
Dependent Claim
121 words
A continuous chain of toilet seat covers, said covers attached to adjacent covers in said chain along opposite edges thereof, each said toilet seat cover in the form of a blank consisting of at least one layer having a central opening, which layer is formed of a non-porous flexible foil of a material which is soluble in an aqueous medium, said foil being provided on one side with a fibrous cellulose material bonded to said foil, said fibres being flocked to and freely exposed on the surface of the foil over part of their length, and wherein that side of the foil which is remote from the fibres is provided with a sealing layer of water repellant or water insoluble material.
Claim 16
Dependent Claim
121 words
A continuous chain of toilet seat covers, said covers attached to adjacent covers in said chain along opposite edges thereof, each said toilet seat cover in the form of a blank consisting of at least one layer having a central opening, which layer is formed of a non-porous flexible foil of a material which is soluble in an aqueous medium, said foil being provided on one side with a fibrous cellulose material bonded to said foil, said fibres being flocked to and freely exposed on the surface of the foil over part of their length, and wherein that side of the foil which is remote from the fibres is provided with a sealing layer of water repellant or water insoluble material.
Claim 17
Dependent Claim
18 words
An continuous chain of covers as claimed in claim 13 wherein each said central opening is drop shaped.
Claim 18
Dependent Claim
160 words
A multiple layer sheet material comprising a non-porous flexible foil of a material which is soluble in an aqueous medium, fibrous material means bonded to one side of said foil for providing at least a minimum barrier against moisture penetrating to the foil, said fibrous material means comprising a plurality of individual fibres bonded to said foil over part of their length and being freely exposed on the surface of the foil over part of their length, and a sealing layer of waterproof and water insoluble material on that side of the foil which is remote from the fibres, wherein said individual fibres are released when said material is placed in water and said foil dissolves, wherein said sealing layer is insoluble in substantially neutral aqueous solutions but at least partly soluble in one of an acid and alkaline solution, and in which one of an acid and basic substance is incorporated in the foil for dissolving said sealing layer.
Claim 19
Dependent Claim
160 words
A multiple layer sheet material comprising a non-porous flexible foil of a material which is soluble in an aqueous medium, fibrous material means bonded to one side of said foil for providing at least a minimum barrier against moisture penetrating to the foil, said fibrous material means comprising a plurality of individual fibres bonded to said foil over part of their length and being freely exposed on the surface of the foil over part of their length, and a sealing layer of waterproof and water insoluble material on that side of the foil which is remote from the fibres, wherein said individual fibres are released when said material is placed in water and said foil dissolves, wherein said sealing layer is insoluble in substantially neutral aqueous solutions but at least partly soluble in one of an acid and alkaline solution, and in which one of an acid and basic substance is incorporated in the foil for dissolving said sealing layer.
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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) | 1985-10-04 | 1986-04-05 | 1986-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-04 | 1990-04-05 | 1990-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-04 | 1994-04-05 | 1994-10-05 | $7700.00 | Window Closed / Lapsed |