Patent US3567869A successfully refreshed from Google Patents.
US3567869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording and reproducing apparatus with rotating head inclination and height-adjusting means
Assignee: Victor Company of Japan Ltd
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Filing: 1968-03-06
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Granted: 1971-03-02
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Expires: 1988-03-06
Abstract
Abstract A magnetic recording and reproducing apparatus has a rotating member, provided with magnetic heads, in a cylindrical magnetic tape guide member assembly. A magnetic tape travels over the guide obliquely relative to the axis of rotation of said rotating member to successively record or reproduce high-frequency signals such as television video signals in oblique tracks. The apparatus permits the matching of tracks on the magnetic tape by adjusting the angle of inclination of the axis of rotation of the rotating member and the height of the rotating member.
Inventors
- 👤 Akira Hirota
- 👤 Keiichi Sekine
- 👤 Junichi Ura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:28
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/61; G11B5/00; G11B5/48; G11B5/52; G11B5/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
342 words
A magnetic recording and reproducing apparatus comprising a cylindrical magnetic tape guide member assembly including two guide members of the same outer diameter disposed one above the other on the same center axis and spaced apart to define an annular space therebetween, a rotating member having magnetic heads mounted on its peripheral edge and rotatable in said annular space, said rotating member being coaxially supported between said cylindrical magnetic tape guide members, a magnetic tape maintained obliquely along the outer circumferential surface of said cylindrical magnetic tape guide member assembly for movement in a predetermined direction, means for adjusting the height of said rotating member within said annular space, a motor in a case having a flange thereon for rotating said rotating member, means for moving said magnetic tape about the cylindrical magnetic tape guide member assembly along its outer circumferential surface so that said magnetic heads scan the magnetic tape to form oblique tracks thereon, and inclinationadjusting means for independently adjusting in each of three mutually perpendicular axes of motion an angle and a direction of inclination of an axis of rotation of said rotating member so that the tracks formed on the magnetic tape by the magnetic heads coincide with a standard track pattern formed on the magnetic tape, wherein said inclination adjusting means comprises at least three inclination-adjusting screws threadably received in openings formed in and disposed equidistantly from one another on the periphery of said flange of said motor case, the outside ends of said screws being abutted against the cylindrical magnetic tape guide member assembly, and said height-adjusting screw threadably received in a threaded opening formed in a boss extending downwardly from said rotating member in the center thereof, said threaded opening beIng disposed above an opening for receiving therein a rotary shaft of said motor for driving the rotating member and maintaining communication therewith, said height adjusting screw extending through the opening in said boss and the opening for receiving said rotary shaft, said height adjusting screw abutting against the upper end of said rotary shaft.
Claim 2
Dependent Claim
342 words
A magnetic recording and reproducing apparatus comprising a cylindrical magnetic tape guide member assembly including two guide members of the same outer diameter disposed one above the other on the same center axis and spaced apart to define an annular space therebetween, a rotating member having magnetic heads mounted on its peripheral edge and rotatable in said annular space, said rotating member being coaxially supported between said cylindrical magnetic tape guide members, a magnetic tape maintained obliquely along the outer circumferential surface of said cylindrical magnetic tape guide member assembly for movement in a predetermined direction, means for adjusting the height of said rotating member within said annular space, a motor in a case having a flange thereon for rotating said rotating member, means for moving said magnetic tape about the cylindrical magnetic tape guide member assembly along its outer circumferential surface so that said magnetic heads scan the magnetic tape to form oblique tracks thereon, and inclinationadjusting means for independently adjusting in each of three mutually perpendicular axes of motion an angle and a direction of inclination of an axis of rotation of said rotating member so that the tracks formed on the magnetic tape by the magnetic heads coincide with a standard track pattern formed on the magnetic tape, wherein said inclination adjusting means comprises at least three inclination-adjusting screws threadably received in openings formed in and disposed equidistantly from one another on the periphery of said flange of said motor case, the outside ends of said screws being abutted against the cylindrical magnetic tape guide member assembly, and said height-adjusting screw threadably received in a threaded opening formed in a boss extending downwardly from said rotating member in the center thereof, said threaded opening beIng disposed above an opening for receiving therein a rotary shaft of said motor for driving the rotating member and maintaining communication therewith, said height adjusting screw extending through the opening in said boss and the opening for receiving said rotary shaft, said height adjusting screw abutting against the upper end of said rotary shaft.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |