Patent US1326476A successfully refreshed from Google Patents.
Patent US4510543A successfully refreshed from Google Patents.
US4510543A
Expired / Lapsed
US
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Magnetic head system for tape player
Assignee: Pioneer Corp
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Filing: 1981-10-27
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Granted: 1985-04-09
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Expires: 2001-10-27
Abstract
Abstract A magnetic head system for a tape player capable of changing tracks in association of the magnetic tape by rotating the magnetic head. The magnetic head is enclosed in a rotary member. As the rotary member rotates 180 degrees about its axis, the housing which accommodates the rotary member controls the rotation of the rotary member for optimum azimuth angle adjustment.
Inventors
- 👤 Hiroyuki Ohta
- 👤 Yutaka Masumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:53
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/44; G11B15/444; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5513; G11B5/5517
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
A magnetic head system for a tape player capable of changing tracks in association of the magnetic tape by rotating the magnetic head comprising a substantially cylindrical rotary member having a bore axially extending to enclose a magnetic head therein and having an arm attached thereto, said rotary member further having gear means therearound; a housing to hold said rotary member closely fit therewithin for axial rotation; drive means in mesh with said gear means of said rotary member; said rotary member being adapted to be rotated by the driving means by substantially 180 degrees about an axis thereof whereas said housing is adapted to control the rotation of the rotary member by way of said arm.
Claim 2
Dependent Claim
117 words
A magnetic head system for a tape player capable of changing tracks in association of the magnetic tape by rotating the magnetic head comprising a substantially cylindrical rotary member having a bore axially extending to enclose a magnetic head therein and having an arm attached thereto, said rotary member further having gear means therearound; a housing to hold said rotary member closely fit therewithin for axial rotation; drive means in mesh with said gear means of said rotary member; said rotary member being adapted to be rotated by the driving means by substantially 180 degrees about an axis thereof whereas said housing is adapted to control the rotation of the rotary member by way of said arm.
Claim 3
Dependent Claim
22 words
A magnetic head system according to claim 1, further including means for ensuring close fit between the rotary member and the housing.
Claim 4
Dependent Claim
17 words
A magnetic head system according to claim 2, wherein said close fit ensuring means includes ball means.
Claim 5
Dependent Claim
17 words
A magnetic head system according to claim 3, wherein said close fit ensuring means includes resilient means.
Claim 6
Dependent Claim
19 words
A magnetic head system according to claim 1, further including means for urging said rotary member against the housing.
Claim 7
Dependent Claim
18 words
A magnetic head system accoridng to claim 5, wherein said urging means is provided on the driving means.
References Cited (Backward Citations)
CA821137A
Cited
US3376396A
Cited
US3614342A
Cited
US3692314A
Cited
US3855628A
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US4302788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |