US4581287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite reticulated foam-textile cleaning pad
Assignee: Creative Products Resource Inc
•
Filing: 1985-08-09
•
Granted: 1986-04-08
•
Expires: 2005-08-09
Abstract
Abstract A composite cleaning pad is provided which incorporates a sheet of open-celled reticulated, hydrophillic polyurethane foam which integrally incorporates silane-coupled abrasives and a gelled aqueous phase and a textile sheet which covers a surface of the foam sheet and is bonded thereto.
Inventors
- 👤 James A. Smith
- 👤 Betty J. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:06
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/32; A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; B32; B32B; B32B27/00; B32B27/12; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T442/00; Y10T442/20; Y10T442/2738
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
70 words
A composite cleaning pad incorporating opposed foam and textile surfaces comprising: (a) a sheet of open-celled, reticulated hydrophillic polyurethane foam, the cell walls of said foam integrally incorporating: (i) a gelled aqueous emulsion comprising a nonionic surfactant; and (ii) a coupled particulate abrasive; and (b) a textile sheet covering a surface of said foam sheet and integrally bonded thereto, wherein said foam sheet exhibits a density of about 0.2-0.4 g/cc.
Claim 2
Dependent Claim
70 words
A composite cleaning pad incorporating opposed foam and textile surfaces comprising: (a) a sheet of open-celled, reticulated hydrophillic polyurethane foam, the cell walls of said foam integrally incorporating: (i) a gelled aqueous emulsion comprising a nonionic surfactant; and (ii) a coupled particulate abrasive; and (b) a textile sheet covering a surface of said foam sheet and integrally bonded thereto, wherein said foam sheet exhibits a density of about 0.2-0.4 g/cc.
Claim 3
Dependent Claim
18 words
The cleaning pad of claim 1 wherein said foam sheet exhibits a breaking strength of about 300-400 g.
Claim 4
Dependent Claim
24 words
The cleaning pad of claim 1 wherein said gelled aqueous emulsion comprises an amount of an inorganic gelling agent effective to gel said emulsion.
Claim 5
Dependent Claim
21 words
The cleaning pad of claim 3 wherein the inorganic gelling agent comprises a smectite clay, an inosilicate mineral or mixtures thereof.
Claim 6
Dependent Claim
24 words
The cleaning pad of claim 1 wherein said gelled aqueous emulsion comprises an amount of an organic gelling agent effective to gel said emulsion.
Claim 7
Dependent Claim
15 words
The cleaning pad of claim 5 wherein the organic gelling agent comprises a polymeric wax.
Claim 8
Dependent Claim
14 words
The cleaning pad of claim 1 wherein the emulsion further comprises a silicone fluid.
Claim 9
Dependent Claim
15 words
The cleaning pad of claim 1 wherein the aqueous emulsion further comprises an anionic surfactant.
Claim 10
Dependent Claim
18 words
The cleaning pad of claim 8 wherein the weight ratio of the surfactants is about 6-1:1 nonionic:anionic surfactant.
Claim 11
Dependent Claim
25 words
The cleaning pad of claim 1 wherein the particulate abrasive is coupled into said cell walls with an effective amount of a silane coupling agent.
Claim 12
Dependent Claim
18 words
The cleaning pad of claim 2 wherein the textile sheet is a nonwoven fabric comprising a polyester/rayon blend.
Claim 13
Dependent Claim
15 words
The cleaning pad of claim 11 which exhibits a breaking strength of about 3000-4000 g.
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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) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |