US3607159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saturated, resilient, flexible and porous abrasive laminate
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1967-05-12
•
Granted: 1971-09-21
•
Expires: 1987-05-12
Abstract
Abstract A resilient, controlled density, porous structure is laminated to a flexible backing and contains fine abrasive particles adhesively bonded to the surface opposite such backing and distributed within said resilient structure with the abrasive density ranging inversely to the distance from the flexible backing. A protective abrasion-resistant layer is interposed between the abrasive grain and the surfaces of the resilient structure.
Inventors
- 👤 George L Haywood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:09
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
21 words
An abrasive product as in claim 1 wherein the abrasive grain is adhesively secured to the surfaces of said porous structure.
Claim 2
Dependent Claim
17 words
An abrasive product as in claim 1 wherein the porous structure is formed of a foamed material.
Claim 3
Dependent Claim
17 words
An abrasive product as in claim 1 wherein the porous structure is formed of reconstituted, particulate form.
Claim 4
Dependent Claim
30 words
An abrasive product as in claim 1 wherein the adhesion of the porous structure to the flexible backing is higher than the value at which the porous structure cohesively fails.
References Cited (Backward Citations)
US2780533A
Cited
US2958593A
Cited
US3020139A
Cited
US3256075A
Cited
US3377411A
Cited
US3252775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |