US4300178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multichannel magnetic head
Assignee: Olympus Corp
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Filing: 1978-12-28
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Granted: 1981-11-10
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Expires: 1998-12-28
Abstract
Abstract A multichannel magnetic head with a plurality of U-shaped cores each contacting at both ends a magnetic tape, in which the plurality of cores are arranged in two series, as viewed in the head face, in such a manner that one end of two legs of each core in one series is disposed between the ends of two adjacent legs of a core or cores in the other series.
Inventors
- 👤 Sinichi Saitou
- 👤 Misao Shimoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:01
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/29
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
153 words
A multi-channel magnetic head for contacting a magnetic tape having a recording face, comprising: a core housing having an elongated head face, and a plurality of U-shaped cores arranged in said housing, each core being wound by an exciting coil and the free ends of each said cores defining a pair of spaced legs for contacting at their free ends the recording face, said U-shaped cores being arranged in two parallel rows on opposite sides of a line extending essentially along the center of said elongated face, the space between the legs of one and the same core being substantially the same as the width of the legs, the legs of one and the same core being on the same side of said line, and staggered with respect to the legs of an adjacent core on the opposite side of said line, so that each leg engages a different track of the tape.
Claim 2
Dependent Claim
153 words
A multi-channel magnetic head for contacting a magnetic tape having a recording face, comprising: a core housing having an elongated head face, and a plurality of U-shaped cores arranged in said housing, each core being wound by an exciting coil and the free ends of each said cores defining a pair of spaced legs for contacting at their free ends the recording face, said U-shaped cores being arranged in two parallel rows on opposite sides of a line extending essentially along the center of said elongated face, the space between the legs of one and the same core being substantially the same as the width of the legs, the legs of one and the same core being on the same side of said line, and staggered with respect to the legs of an adjacent core on the opposite side of said line, so that each leg engages a different track of the tape.
Claim 3
Dependent Claim
26 words
A multichannel magnetic head according to claim 1, in which the leg ends of each core in the two rows are wedge-shaped to have an edge.
Claim 4
Dependent Claim
22 words
A multichannel magnetic head according to claim 1, in which the leg ends of each core in the two rows are flat.
References Cited (Backward Citations)
SU526005A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |