Method of making a flexible resilient abrasive
Abstract
Abstract A resilient, controlled-density, porous, abrasive material is manufactured having a backing member which in the preferred embodiment is a foam layer of a plurality of discrete resilient particles of varying degrees of compressibility. The backing member is provided from a larger body of foam material reconstituted from particulate foam. The surface of the backing member, on which is coated an abrasive grain - binder adhesive slurry, is subjected, prior to the coating of the slurry on the particulate foam layer, to the action of a plurality of rapidly moving small abrasive particles whereby a relatively non-compressive shearing of the foam surface is effected to condition it for reception of abrasive grains and associated binder adhesive and to produce a uniform thickness of the porous abrasive grain support.
Inventors
- 👤 George L. Haywood
Bibliographic Details
Claims Analysis
Total Claims: 6References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |