US4712552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushioned abrasive composite
Assignee: Individual
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Filing: 1986-06-23
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Granted: 1987-12-15
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Expires: 2006-06-23
Abstract
Abstract An abrasive and cushioned composite comprising: (a) a tough, stretchable first sheet of silicone polymer, (b) abrasive particulate adherent to and protruding from at least one side of the first sheet, (c) other sheet means providing a cushioned support for said first sheet and combined therewith.
Inventors
- 👤 William E. Pangburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:37
CPC Classifications
B; B24; B24D; B24D15/00; B24D15/04; A; A61; A61B; A61B17/00; A61B17/54
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
A composite cosmetic device, comprising (a) a tough, flexible first sheet of silicone polymer, and having first and second sides, (b) abrasive particulate consisting of pumice carried by and protruding from the first side of the sheet and exposed for rubbing contact with human skin or other work, said sheet being stretchable, and being formed from a layer of initially incompletely cured silicone polymer with which said particulate has been combined to adhere to the sheet, the sheet then allowed to cure, and (c) other sheet means attached to said silicone polymer sheet and projecting from said second side thereof, (d) said particulate penetrating, and anchored by, the silicone polymer of the first sheet at said first side of the sheet, (e) said other sheet means including a release liner bonded to said first sheet, and auxiliary sheet structure carrying said release liner.
Claim 2
Dependent Claim
143 words
A composite cosmetic device, comprising (a) a tough, flexible first sheet of silicone polymer, and having first and second sides, (b) abrasive particulate consisting of pumice carried by and protruding from the first side of the sheet and exposed for rubbing contact with human skin or other work, said sheet being stretchable, and being formed from a layer of initially incompletely cured silicone polymer with which said particulate has been combined to adhere to the sheet, the sheet then allowed to cure, and (c) other sheet means attached to said silicone polymer sheet and projecting from said second side thereof, (d) said particulate penetrating, and anchored by, the silicone polymer of the first sheet at said first side of the sheet, (e) said other sheet means including a release liner bonded to said first sheet, and auxiliary sheet structure carrying said release liner.
Claim 3
Dependent Claim
16 words
The composite of claim 1 wherein the first sheet thickness is between 0.015 and 0.100 inches.
Claim 4
Dependent Claim
24 words
The composite of claim 2 wherein the first sheet thickness is approximately uniform over the sheet area, and is between 0.020 and 0.060 inches.
Claim 5
Dependent Claim
14 words
The composite of claim 1 wherein said auxiliary sheet structure comprises a plastic sheet.
Claim 6
Dependent Claim
15 words
The composite of claim 1 wherein said auxiliary sheet structure includes a foamed plastic layer.
Claim 7
Dependent Claim
26 words
The composite of claim 5 wherein said auxiliary sheet structure includes a carrier sheet sandwiched between one side of said foamed layer and said release liner.
Claim 8
Dependent Claim
17 words
The composite of claim 5 further comprising a second release liner releasably bonded to said foamed layer.
Claim 9
Dependent Claim
17 words
The composite of claim 5 wherein said foam consists essentially of polyurethane and has exposed fibrous edges.
Claim 10
Dependent Claim
19 words
The composite of claim 5 wherein said foam is fibrous throughout, and has at least about 90% void space.
Claim 11
Dependent Claim
19 words
The composite of claim 5 wherein said foam is selected from the group consisting of polyethylene, polyurethane and polyvinylchloride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |