US3214253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive article backed with stretchable-compressible material
Assignee: Robert Bosch Tool Corp
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Filing: 1963-06-26
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Granted: 1965-10-26
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Expires: 1983-06-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Wilfred M Mccord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:22
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/02; B24D18/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
AN ABRASIVE ARTICLE OF MANUFACTURE COMPRISING A RELATIVELY THIN SHEET OF STEEL PROVIDING A GENERALLY PLANAR WORKING SURFACE ON ONE SIDE AND BEING OF GENERALLY UNIFORM THICKNESS AND BEING NORMALLY NON-STRETCHABLE IN USE BUT BEING SUBJECT UPON SUFFICIENT IMPACT OR BENDING TO BECOME PARMANENTLY DEFORMED OUT OF THE PLANE OF THE WORKING SURFACE, AND SAID THIN SHEET HAVING A FLAT MARGINAL PORTION EXPOSED DURING USAGE TO SUCH POSSIBLE DEFORMATION OF THE WORKING SURFACE, ABRASIVE GRIT PARTICLES COPPER BRAZED TO SAID ONE SIDE OF SAID THIN SHEET, AND FLEXIBLE DEFORMATION-RESISTING BACKING MEANS OF STRETCHABLE AND COMPRESSIBLE NON-METALLIC MATERIAL ADHERING TO AND OVERLYING THE OTHER SIDE OF SAID THIN SHEET BUT NOT EXTENDING BEYOND ITS MARGINAL PORTION, SAID BACKING MEANS BEING COEXTENSIVE WITH THE THIN SHEET AND HAVING SUFFICIENT BULK AS TO DISTRIBUTE BENDING FORCES EXERTED ON THE STEEL SHEET OVER A LARGE AREA, THE THICKNESS RANGE OF THE THIN STEEL SHEET BEING APPROXIMATELY .001-.008 INCH AND THAT OF THE BACKING BEING APPROXIMATELY .006-.060 INCH AND AT LEAST FIVE TIMES THE THICKNESS OF THE THIN SHEET SHEET.
Claim 2
Dependent Claim
175 words
AN ABRASIVE ARTICLE OF MANUFACTURE COMPRISING A RELATIVELY THIN SHEET OF STEEL PROVIDING A GENERALLY PLANAR WORKING SURFACE ON ONE SIDE AND BEING OF GENERALLY UNIFORM THICKNESS AND BEING NORMALLY NON-STRETCHABLE IN USE BUT BEING SUBJECT UPON SUFFICIENT IMPACT OR BENDING TO BECOME PARMANENTLY DEFORMED OUT OF THE PLANE OF THE WORKING SURFACE, AND SAID THIN SHEET HAVING A FLAT MARGINAL PORTION EXPOSED DURING USAGE TO SUCH POSSIBLE DEFORMATION OF THE WORKING SURFACE, ABRASIVE GRIT PARTICLES COPPER BRAZED TO SAID ONE SIDE OF SAID THIN SHEET, AND FLEXIBLE DEFORMATION-RESISTING BACKING MEANS OF STRETCHABLE AND COMPRESSIBLE NON-METALLIC MATERIAL ADHERING TO AND OVERLYING THE OTHER SIDE OF SAID THIN SHEET BUT NOT EXTENDING BEYOND ITS MARGINAL PORTION, SAID BACKING MEANS BEING COEXTENSIVE WITH THE THIN SHEET AND HAVING SUFFICIENT BULK AS TO DISTRIBUTE BENDING FORCES EXERTED ON THE STEEL SHEET OVER A LARGE AREA, THE THICKNESS RANGE OF THE THIN STEEL SHEET BEING APPROXIMATELY .001-.008 INCH AND THAT OF THE BACKING BEING APPROXIMATELY .006-.060 INCH AND AT LEAST FIVE TIMES THE THICKNESS OF THE THIN SHEET SHEET.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |