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US4467376A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for the recording on, and reading of, store tapes

Assignee: GX Holding AG
•
Filing: 1981-12-01
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Granted: 1984-08-21
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Expires: 2001-12-01
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Abstract

Abstract For recording on, and reading of, a magnetic tape guided around a cylinder, there are several magnet heads arranged on a common circle diameter. The magnet heads revolve about a common axis extending obliquely with respect to the travel direction of the tape. The magnet heads interact with the tape through a slot-shaped aperture formed in the cylinder. For the purpose of achieving a very simple tape-guiding system, the tape is guided in a direction perpendicular to the cylinder longitudinal axis over a cylinder surface which, at least in its tape-guiding zone, and viewed in a section perpendicular to the cylinder longitudinal axis, corresponds at least approximately to a projection of the circular motion performed by the magnet heads in a direction perpendicular to the tape travel direction.

Inventors

  • 👤 Walter Jaeger

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 22:36
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/008; G11B5/00813; G11B5/00847; G11B5/0086; G11B15/00; G11B15/60; G11B15/61; G11B15/615; G11B25/00; G11B25/06; G11B5/48; G11B5/52; G11B5/53; G11B5/531; G11B5/534; G11B7/00; G11B7/002; G11B7/003

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 94 words
Apparatus for the recording on, and reading of, a magnetic tape comprising: recording and reading heads which are arranged on a disk which revolves around a common axis extending obliquely with respect to the travel direction of said tape, tape transport means; and guiding means of elliptical cylindrical form having major and minor elliptical axis and longitudinal axis, with guiding means surrounding said recording heads, said longitudinal axis being perpendicular to the direction of tape transport, said recording and reading heads interacting with the tape through a slot-shaped aperature provided in said guiding means.
Claim 2
Dependent Claim 94 words
Apparatus for the recording on, and reading of, a magnetic tape comprising: recording and reading heads which are arranged on a disk which revolves around a common axis extending obliquely with respect to the travel direction of said tape, tape transport means; and guiding means of elliptical cylindrical form having major and minor elliptical axis and longitudinal axis, with guiding means surrounding said recording heads, said longitudinal axis being perpendicular to the direction of tape transport, said recording and reading heads interacting with the tape through a slot-shaped aperature provided in said guiding means.
Claim 3
Dependent Claim 16 words
Apparatus according to claim 1 in which four recording heads and four reading heads are provided.
Claim 4
Dependent Claim 25 words
Apparatus according to claim 1 or 2 in which said tape guiding means has its elliptical cross-sectional form approximated by a multiplicity of arc-of-circle sections.
Claim 5
Dependent Claim 27 words
Apparatus according to claim 1 in which the longitudinal axis of said guiding means departs from perpendicular to the direction of tape transport by less than 1°.
Claim 6
Dependent Claim 28 words
Apparatus according to claim 1 in which consecutive recording or reading heads have gaps formed at different angles with respect to the axis of rotation of said disk.

References Cited (Backward Citations)

US3636275A Cited
US3588378A Cited
US4050090A Cited
US4122506A Cited
US4170787A Cited
US4213162A Cited
US4179717A Cited
US4369473A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-08-21 1988-02-20 1988-08-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-08-21 1992-02-20 1992-08-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-08-21 1996-02-20 1996-08-21 $7700.00 Window Closed / Lapsed

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