US4199835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scouring ball
Assignee: 3M Co
•
Filing: 1979-02-12
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Granted: 1980-04-29
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Expires: 1999-02-12
Abstract
Abstract A scouring pad in the shape of a ball comprises a plurality of radially slit, regular-shaped, planar segments of conformable, lofty, low-density nonwoven abrasive product fastened together under compression at their centers with fastening means. The segments are slit from the outer edge toward the center to provide radially disposed, equally spaced slits which define radially aligned lobes, the total array of which defines the ball shape.
Inventors
- 👤 Raymond F. Heyer
- 👤 Gary J. Klecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:18
CPC Classifications
A; A47; A47L; A47L17/00; A47L17/04; A47L17/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
162 words
A scouring pad substantially in the shape of a highly conformable ball comprising a plurality of radially slit, regular-shaped, planar segments of conformable, lofty, low-density, nonwoven abrasive product fastened together under compression at their centers with fastening means, wherein the stack of segments have in the uncompressed state a thickeness to average diameter ratio in the range of about 1:1 to about 1:3, each of said segments being slit along a line from the outer edge toward its center in the average range of about 10% to 80% of the distance of said line to provide from about 5 to about 12 radially disposed equally spaced slits which define a plurality of radially aligned lobes having a width at least 3/16 inch at the narrowest point, with lobes in the same segment being capable of being alternatively at least temporarily positioned above and below the plane of such segment, whereby the total array of lobes in said pad defines said ball shape.
Claim 2
Dependent Claim
162 words
A scouring pad substantially in the shape of a highly conformable ball comprising a plurality of radially slit, regular-shaped, planar segments of conformable, lofty, low-density, nonwoven abrasive product fastened together under compression at their centers with fastening means, wherein the stack of segments have in the uncompressed state a thickeness to average diameter ratio in the range of about 1:1 to about 1:3, each of said segments being slit along a line from the outer edge toward its center in the average range of about 10% to 80% of the distance of said line to provide from about 5 to about 12 radially disposed equally spaced slits which define a plurality of radially aligned lobes having a width at least 3/16 inch at the narrowest point, with lobes in the same segment being capable of being alternatively at least temporarily positioned above and below the plane of such segment, whereby the total array of lobes in said pad defines said ball shape.
Claim 3
Dependent Claim
15 words
The pad of claim 1 wherein said segments are in the shape of a hexagon.
Claim 4
Dependent Claim
16 words
The pad of claim 2 wherein said hexagon is slit from each corner toward the center.
Claim 5
Dependent Claim
23 words
The pad of claim 2 wherein said hexagon is slit from points on its outer edge midway between each corned toward the center.
Claim 6
Dependent Claim
21 words
The pad of claim 1 wherein said slit is in the range of about 30-70% of the distance along said line.
Claim 7
Dependent Claim
21 words
The pad of claim 1 wherein the thickness to average diameter ratio is in the range of about 1:1.25 to 1:2.5.
Claim 8
Dependent Claim
17 words
The pad of claim 1 also including an elongate handle fastened by one end to fastening means.
References Cited (Backward Citations)
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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) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |