Patent US4599826A successfully refreshed from Google Patents.
US4599826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for magnetoabrasive machining of workpieces
Assignee: V. Bakul Institute for Superhard Materials
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Filing: 1984-03-05
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Granted: 1986-07-15
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Expires: 2004-03-05
Abstract
Abstract A device for magnetoabrasive machining of workpieces, comprising a carrierade of a nonmagnetic material and at least one permanent magnet made as a bank of at least four magnetic elements contacting one another with their side surfaces. The bank is situated on a respective magnetic circuit 5 secured on the carrier 1. The magnetic elements are so arranged in each bank that the polarity of their poles alternates staggerwise in the plane formed by said poles.
Inventors
- 👤 Georgy A. Podoprigora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:49
CPC Classifications
B; B24; B24B; B24B1/00; B24B1/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
A device for magnetoabrasive machining of workpieces, obtaining drive from a rotary mechanism, and comprising: a carrier of nonmagnetic material; means for fixing said device on a shaft of said rotary mechanism, said fixing means being associated with said carrier; at least one permanent magnet situated on said carrier and formed as a bank composed of a plurality of magnetic elements, at least four in number, each of said magnetic elements having an axis of magnetization and having at least two adjacent intersecting side surfaces contacting respective side surfaces of two other ones of said magnetic elements, said magnetic elements being so arranged in each of said banks that the polarity of their poles lying on the axes of magnetization, alternates staggerwise, and each of said banks of magnetic elements being mounted in a rotatable holder for changing the angular position of said bank of magnetic elements on the carrier with respect to a vector of peripheral velocity of said device; and magnetic circuits equal in number to said banks of magnetic elements, said magnetic circuits being secured on said carrier and carrying said banks of magnetic elements.
Claim 2
Independent Claim
188 words
A device for magnetoabrasive machining of workpieces, obtaining drive from a rotary mechanism, and comprising: a carrier of nonmagnetic material; means for fixing said device on a shaft of said rotary mechanism, said fixing means being associated with said carrier; at least one permanent magnet situated on said carrier and formed as a bank composed of a plurality of magnetic elements, at least four in number, each of said magnetic elements having an axis of magnetization and having at least two adjacent intersecting side surfaces contacting respective side surfaces of two other ones of said magnetic elements, said magnetic elements being so arranged in each of said banks that the polarity of their poles lying on the axes of magnetization, alternates staggerwise, and each of said banks of magnetic elements being mounted in a rotatable holder for changing the angular position of said bank of magnetic elements on the carrier with respect to a vector of peripheral velocity of said device; and magnetic circuits equal in number to said banks of magnetic elements, said magnetic circuits being secured on said carrier and carrying said banks of magnetic elements.
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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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |