US3918094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching device employing magnetic tape with legends and contained in a special cassette
Assignee: Individual
•
Filing: 1974-05-21
•
Granted: 1975-11-04
•
Expires: 1994-05-21
Abstract
Abstract A magnetic recording tape has legends applied to the rear, nonmagnetised surface thereof, the legends corresponding to recorded information on the tape. The tape is contained in a special cassette and a window is provided in the cassette to allow the printed legends to be seen. The spacing between legends and recorded information is made equal to that required for the printed legends corresponding to the information being replayed at any instant to just be visible in the window. A sliding cover is provided for the window. The tape in the cassette is twisted so as to present a 45* surface below the window, for viewing.
Inventors
- 👤 Adrian Francis Rudd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:55
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08785; G09; G09B; G09B5/00; G09B5/06; G09B5/062; G11B15/00; G11B15/675; G11B15/6751; G11B23/0875; G11B23/08757; G11B23/38; G11B23/44
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
116 words
In combination a magnetic recording tape having audio information recorded thereon and having applied to one side thereof legends corresponding to the recorded information for visually representing the information as the sounds thereon are heard during playback, a cassette, two reels within the cassette for containing and taking up the tape respectively the two reels being sandwiched between upper and lower housing walls, at least one window formed in the upper housing wall and guide means in the housing for causing the tape to be stretched below the window whereby the legends on the tape can be seen through the window as they pass therebelow during transition of the tape from one reel to the other.
Claim 2
Dependent Claim
116 words
In combination a magnetic recording tape having audio information recorded thereon and having applied to one side thereof legends corresponding to the recorded information for visually representing the information as the sounds thereon are heard during playback, a cassette, two reels within the cassette for containing and taking up the tape respectively the two reels being sandwiched between upper and lower housing walls, at least one window formed in the upper housing wall and guide means in the housing for causing the tape to be stretched below the window whereby the legends on the tape can be seen through the window as they pass therebelow during transition of the tape from one reel to the other.
Claim 3
Dependent Claim
39 words
A magnetic recording tape and cassette therefor as set forth in claim 1 in which the cassette is a standard cassette having an extension at one end and the viewing window is located in the extension of the cassette.
Claim 4
Dependent Claim
24 words
A magnetic tape and cassette therefor as set forth in claim 2 in which the window is adjustable in position along the tape run.
Claim 5
Dependent Claim
44 words
A magnetic tape and cassette therefor as set forth in claim 3 in which the dimension of the window parallel to the direction of movement of the tape is adjustable to alter the size of the opening through which the legends can be seen.
Claim 6
Dependent Claim
33 words
A magnetic recording tape and cassette therefor as set forth in claim 1 in which there are a plurality of separate windows so that a single legend is presented visually more than once.
Claim 7
Dependent Claim
26 words
A magnetic recording tape and cassette therefor as set forth in claim 1 further comprising means for illuminating the tape at least below the said window.
Claim 8
Dependent Claim
34 words
A magnetic recording tape and cassette therefor as set forth in claim 1 further comprising optical magnifying means in the window for presenting an enlarged image of the legends as the tape moves therebelow.
Claim 9
Dependent Claim
51 words
A magnetic recording tape and cassette therefor as set forth in claim 1 in which the guide means twists the tape through an angle of at least 45* before it passes below the window and through the same angle but in the opposite direction after it has passed below the window.
References Cited (Backward Citations)
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Cited
US3176927A
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US3255537A
Cited
US3363330A
Cited
US3369307A
Cited
US3416241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |