US4175930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for finishing surfaces of non-magnetic articles by means of ferromagnetic abrasive powder in magnetic field
Assignee: Individual
•
Filing: 1978-04-27
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Granted: 1979-11-27
•
Expires: 1998-04-27
Abstract
Abstract A method for surface finishing of non-magnetic articles by means of ferromagnetic abrasive powders in a magnetic field, wherein ferromagnetic powder is introduced into the magnetic field produced by oppositely positioned unlike poles of a magnetic system to form a cutting "brush" of the ferromagnetic abrasisve powder and non-magnetic articles are then placed into said magnetic field, said articles being moved relative to the cutting "brush" of the ferromagnetic powder. Additionally, each pair of non-magnetic articles is separated by a ferromagnetic body, the latter being moved relative to the cutting "brush" of the ferromagnetic abrasive powder so as to restore the cutttng "brush".
Inventors
- 👤 Faddei J. Sakulevich
- 👤 Leonid K. Minin
- 👤 Jury A. Bazarnov
- 👤 Alexandr A. Baubel
- 👤 Nikolai Y. Skvorchevsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:59
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/10; B24B31/102; B24B1/00; B24B1/005
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
A method for finishing surfaces of non-magnetic articles by means of ferromagnetic abrasive powders in a magnetic field which is produced by oppositely positioned unlike poles of a magnetic system, comprising the following: introducing a ferromagnetic abrasive powder in said magnetic field to form a cutting brush from said powder; placing said non-magnetic articles in said magnetic field; causing said articles to be moved relative to said cutting brush; placing a ferromagnetic body between each of said non-magnetic articles and causing said body to move relative to said cutting brush so that the latter is continuously restored.
Claim 2
Independent Claim
97 words
A method for finishing surfaces of non-magnetic articles by means of ferromagnetic abrasive powders in a magnetic field which is produced by oppositely positioned unlike poles of a magnetic system, comprising the following: introducing a ferromagnetic abrasive powder in said magnetic field to form a cutting brush from said powder; placing said non-magnetic articles in said magnetic field; causing said articles to be moved relative to said cutting brush; placing a ferromagnetic body between each of said non-magnetic articles and causing said body to move relative to said cutting brush so that the latter is continuously restored.
Claim 3
Dependent Claim
42 words
A method as claimed in claim 1, wherein the ferromagnetic body employed has an aerodynamic profile whose cross-section diminishes in the direction opposite to the direction of motion of the non-magnetic article being treated, said body being brought into a translatory motion.
Claim 4
Dependent Claim
33 words
A method as claimed in claim 1, wherein the ferromagnetic body employed has a body symmetrical about an axis, said body being brought into rotation on the axis and into a translatory motion.
Claim 5
Dependent Claim
16 words
A method as claimed in claim 1, wherein the magnetic field is a stationary magnetic field.
Claim 6
Dependent Claim
25 words
A method as claimed in claim 1, wherein the movement of said articles relative to said cutting brush is a combined rotary and translatory movement.
Claim 7
Dependent Claim
28 words
A method as claimed in claim 1, wherein said articles are placed in said magnetic field by moving said articles in a direction transverse to said magnetic field.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |