Patent US5045962A successfully refreshed from Google Patents.
US5045962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape cleaner
Assignee: Nakamichi Corp
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Filing: 1989-10-31
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Granted: 1991-09-03
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Expires: 2009-10-31
Abstract
Abstract A magnetic tape cleaner comprising a tape scraper engaging a recording face of a magnetic tape to scrape magnetic powder out of the recording face thereof and a magnet to attract and adhere thereto the magnetic powder scraped out of the recording face of the magnetic tape.
Inventors
- 👤 Yoshihisa Inoue
- 👤 Shinichi Ishizuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:05
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/50; G11B23/502
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
A magnetic tape cleaner comprising: tape scraper means engaging a magnetic tape to scrape magnetic powder from a recording face of said magnetic tape; and magnetic means disposed relatively below said scraper in a direction in which said scraped magnetic powder falls to attract and adhere said scraped powder thereto.
Claim 2
Dependent Claim
50 words
A magnetic tape cleaner comprising: tape scraper means engaging a magnetic tape to scrape magnetic powder from a recording face of said magnetic tape; and magnetic means disposed relatively below said scraper in a direction in which said scraped magnetic powder falls to attract and adhere said scraped powder thereto.
Claim 3
Dependent Claim
18 words
A magnetic tape cleaner as set forth in claim 1, and wherein said magnet means comprises a magnet.
Claim 4
Dependent Claim
35 words
A magnetic tape cleaner as set forth in claim 1, and wherein said magnet means is disposed in a containing hole provided in a base in alignment with a space of said tape scraper means.
Claim 5
Dependent Claim
25 words
A magnetic tape cleaner as set forth in claim 1, and wherein said magnet means is disposed in a space of said tape scraper means.
Claim 6
Dependent Claim
42 words
A magnetic tape cleaner as set forth in claim 1, and wherein said magnet means comprises a combination of a magnet and a yoke member magnetically connected to said magnet and including a pair of pole pieces having a gap provided therebetween.
Claim 7
Dependent Claim
25 words
A magnetic tape cleaner as set forth in claim 5, and wherein said yoke member comprises a connecting portion connecting said pair of pole pieces.
Claim 8
Dependent Claim
23 words
A magnetic tape cleaner as set forth in claim 6, and wherein said connecting portion of said yoke member is of magnetic material.
Claim 9
Dependent Claim
25 words
A magnetic tape cleaner as set forth in claim 6, and wherein said connecting portion of said yoke member is of material having low permeability.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-02 | 1995-03-04 | 1995-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-02 | 1999-03-04 | 1999-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-02 | 2003-03-04 | 2003-09-03 | $7700.00 | Window Closed / Lapsed |