US5311634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sponge cleaning pad
Assignee: Individual
•
Filing: 1993-02-03
•
Granted: 1994-05-17
•
Expires: 2013-02-03
Abstract
Abstract Disc shaped cleaning pads for use on cleaning apparatus, consisting of a supporting core to which a sponge is affixed. The sponge is a microporous material made from a hydroxylated polymer, the physical properties of which can be modified in the chemical growing process.
Inventors
- 👤 Nicholas Andros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:19
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0402; H10P72/0406; H10P72/0411; H10P72/0412; B; B08; B08B; B08B1/00; B08B1/30; B08B1/32; B08B1/36
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
131 words
A disk shaped cleaning pad for use in combination with a cleaning apparatus, said cleaning pad comprising: a disk shaped core having opposed major surfaces, an axis of rotation extending through said major surfaces, and having a plurality of apertures extending therethrough; a first disk shaped sponge having projections integrally formed therewith and extending outwardly therefrom, affixed to one of said major surfaces; a second disk shaped sponge having projections integrally formed therewith and extending outwardly therefrom, affixed to said other of said major surfaces of said disk shaped core; and coupling means for coupling said cleaning pad to said cleaning apparatus, said coupling means including a bore extending axially through said disk shaped core at said axis of rotation, to be received about a rotatable shaft of said cleaning apparatus.
Claim 2
Dependent Claim
131 words
A disk shaped cleaning pad for use in combination with a cleaning apparatus, said cleaning pad comprising: a disk shaped core having opposed major surfaces, an axis of rotation extending through said major surfaces, and having a plurality of apertures extending therethrough; a first disk shaped sponge having projections integrally formed therewith and extending outwardly therefrom, affixed to one of said major surfaces; a second disk shaped sponge having projections integrally formed therewith and extending outwardly therefrom, affixed to said other of said major surfaces of said disk shaped core; and coupling means for coupling said cleaning pad to said cleaning apparatus, said coupling means including a bore extending axially through said disk shaped core at said axis of rotation, to be received about a rotatable shaft of said cleaning apparatus.
Claim 3
Dependent Claim
49 words
A cleaning pad as claimed in claim 1 wherein said projections of said first disk shaped sponge and said second disk shaped sponge are configured to intermesh with adjacent cleaning pads mounted on said rotatable shaft of said cleaning apparatus when said cleaning pad is received about said shaft.
Claim 4
Dependent Claim
39 words
A cleaning pad as claimed in claim 1 wherein said first and second disk shaped sponges include a hydroxylated polymer having a degree of polymerization in the range of 1700-2500, and a molecular weight in the range of 75,000-120,000.
Claim 5
Dependent Claim
136 words
Improvement to a cleaning apparatus having driving means for rotating cleaning pads, and support apparatus for supporting a disk shaped article having a first and a second surface, said improvement comprising: a first and a second cleaning pad mounted on said driving means in opposed fashion for receiving said disk shaped article therebetween such that said first and second surfaces of said disk shaped article is adapted to be in cleaning engagement with said first and second cleaning pads respectively; said first and second cleaning pads each including; a disk shaped plate having opposed major surfaces, an axis of rotation extending through said major surfaces and having a plurality of apertures extending therethrough, a disk shaped sponge affixed to one of said major surfaces; and coupling means for coupling said cleaning pad to said driving means.
Claim 6
Dependent Claim
136 words
Improvement to a cleaning apparatus having driving means for rotating cleaning pads, and support apparatus for supporting a disk shaped article having a first and a second surface, said improvement comprising: a first and a second cleaning pad mounted on said driving means in opposed fashion for receiving said disk shaped article therebetween such that said first and second surfaces of said disk shaped article is adapted to be in cleaning engagement with said first and second cleaning pads respectively; said first and second cleaning pads each including; a disk shaped plate having opposed major surfaces, an axis of rotation extending through said major surfaces and having a plurality of apertures extending therethrough, a disk shaped sponge affixed to one of said major surfaces; and coupling means for coupling said cleaning pad to said driving means.
Claim 7
Dependent Claim
15 words
An improvement as claimed in claim 4 wherein said drive means includes a rotatable shaft.
Claim 8
Dependent Claim
42 words
An improvement as claimed in claim 5 wherein said coupling means includes a bore extending axially through said disk shaped sponge and said disk shaped plate at said axis of rotation, to be received about said rotatable shaft of said cleaning apparatus.
Claim 9
Dependent Claim
22 words
An improvement as claimed in claim 6 wherein each of said disk shaped sponges includes projections integrally formed therewith, extending outwardly therefrom.
Claim 10
Dependent Claim
33 words
An improvement as claimed in claim 7 wherein each of said cleaning pads further includes a second disk shaped sponge affixed to said other of said major surfaces of said disk shaped plate.
Claim 11
Dependent Claim
23 words
An improvement as claimed in claim 8 wherein each of said second disk shaped sponges includes projections integrally formed therewith, extending outwardly therefrom.
Claim 12
Dependent Claim
36 words
An improvement as claimed in claim 9 wherein said projections of said first disk shaped sponge of said first cleaning pad, intermesh with said projections of said second disk shaped sponge of said second cleaning pad.
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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) | 1997-05-16 | 1997-11-15 | 1998-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-16 | 2001-11-15 | 2002-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-16 | 2005-11-15 | 2006-05-17 | $7700.00 | Window Closed / Lapsed |