Patent US3869834A successfully refreshed from Google Patents.
US3869834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated abrasive articles having a surface deposit of fluorocarbon particles
Assignee: Avco Corp
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Filing: 1968-09-16
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Granted: 1975-03-11
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Expires: 1988-09-16
Abstract
Abstract The invention is directed to abrasive articles having a surface deposit comprising an accumulation of fluorocarbon particles, which may be loosely applied or densely compacted on the surface. Processes for making such articles are also described in detail.
Inventors
- 👤 George Cruise Mullin
- 👤 Robert Earle Wetherby
- 👤 Victor Oscar Chevalier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:11
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1436
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
46 words
A coated abrasive device having a surface deposit comprising an accumulation of fluorocarbon particles covering at least that portion of the surface not covered by the abrasive particles and the ratio of the fluorocarbon to abrasive particles on the surface is 1/8 to 1/2 by weight.
Claim 2
Dependent Claim
46 words
A coated abrasive device having a surface deposit comprising an accumulation of fluorocarbon particles covering at least that portion of the surface not covered by the abrasive particles and the ratio of the fluorocarbon to abrasive particles on the surface is 1/8 to 1/2 by weight.
Claim 3
Dependent Claim
46 words
A COATED ABRASIVE DEVICE HAVING A SURFACE DEPOSIT COMPRISING AN ACCUMULATION OF FLUOROCARBON PARTICLES COVERING AT LEAST THAT PORTION OF THE SURFACE NOT COVERED BY THE ABRASIVE PARTICLES AND THE RATIO OF THE FLUOROCARBON TO ABRASIVE PARTICLES ON THE SURFACES IS 1/8 TO 1/2 BY WEIGHT.
Claim 4
Dependent Claim
46 words
A COATED ABRASIVE DEVICE HAVING A SURFACE DEPOSIT COMPRISING AN ACCUMULATION OF FLUOROCARBON PARTICLES COVERING AT LEAST THAT PORTION OF THE SURFACE NOT COVERED BY THE ABRASIVE PARTICLES AND THE RATIO OF THE FLUOROCARBON TO ABRASIVE PARTICLES ON THE SURFACES IS 1/8 TO 1/2 BY WEIGHT.
Claim 5
Dependent Claim
43 words
A grinding process comprising moving an abrasive device having protuberances of abrasive articles relative to a workpiece for grinding said workpiece and continuously depositing fluorocarbon particles on the face of the abrasive device to form a deposit comprising an accumulation of fluorocarbon particles.
Claim 6
Dependent Claim
43 words
A grinding process comprising moving an abrasive device having protuberances of abrasive articles relative to a workpiece for grinding said workpiece and continuously depositing fluorocarbon particles on the face of the abrasive device to form a deposit comprising an accumulation of fluorocarbon particles.
Claim 7
Dependent Claim
34 words
A grinding process as described in claim 2 in which the relative proportion of fluorocarbon consumed to abrasive particles lost during a grinding operation is in the range of 0.8/1 to 6/1 by weight.
Claim 8
Dependent Claim
27 words
A process as described in claim 2 in which said fluorocarbon applied to the face of the abrasive device is a loosely applied accumulation of fluorocarbon particles.
Claim 9
Dependent Claim
28 words
A grinding process as described in claim 2 in which the fluorocarbon coating is produced by abrading a solid fluorocarbon member by the face of the abrasive device.
Claim 10
Dependent Claim
32 words
A grinding process as described in claim 2 in which the fluorocarbon is supplied to the abrasive device by supplying a suspension of fluorocarbon particles on the face of the abrasive device.
Claim 11
Dependent Claim
21 words
A grinding process as described in claim 6 in which said suspension is sprayed on the face of the abrasive device.
References Cited (Backward Citations)
US3042508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |