Patent US3438856A successfully refreshed from Google Patents.
Patent US3886670A successfully refreshed from Google Patents.
US3886670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio-visual educational apparatus
Assignee: Individual
•
Filing: 1972-12-07
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Granted: 1975-06-03
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Expires: 1992-12-07
Abstract
Abstract A scripto audio-visual educational apparatus having a slide projector, a screen on which images from the slide projector may be displayed, a multi-track tape recorder, circuitry for operating said tape recorder synchronously with the slide projector and means for memorizing selected slides. There is also a roll of translucent paper arranged on said screen for reception of student responses. The roll of paper is adapted for movement relative to the screen by motors and associated control means.
Inventors
- 👤 Rene Lucien
- 👤 Madame Maryvonne Lehenaff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:21
CPC Classifications
G; G09; G09B; G09B5/00; G09B5/06; G09B5/067
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
124 words
A scripto audio-visual educational apparatus comprising a slide projector, a screen on which images of the slides can be projected, a tape recorder having at least two tracks, means for operating said tape recorder in synchronism with said projector, means for memorizing selected slides and acting on said projector and on said tape recorder, means including controls for operating the apparatus in successive stages, a roll of translucent paper, said translucent paper being arrangeable on said screen, and means independent of said projector and tape recorder for winding said translucent paper in one direction or the other on said screen, whereby the paper is adapted for reception of student written or drawn responses, the latter means including motors and switch means controlling said motors.
Claim 2
Dependent Claim
124 words
A scripto audio-visual educational apparatus comprising a slide projector, a screen on which images of the slides can be projected, a tape recorder having at least two tracks, means for operating said tape recorder in synchronism with said projector, means for memorizing selected slides and acting on said projector and on said tape recorder, means including controls for operating the apparatus in successive stages, a roll of translucent paper, said translucent paper being arrangeable on said screen, and means independent of said projector and tape recorder for winding said translucent paper in one direction or the other on said screen, whereby the paper is adapted for reception of student written or drawn responses, the latter means including motors and switch means controlling said motors.
Claim 3
Dependent Claim
124 words
A scripto audio-visual educational apparatus comprising a slide projector, a screen on which images of the slides can be projected, a tape recorder having at least two tracks, means for operating said tape recorder in synchronism with said projector, means for memorizing selected slides and acting on said projector and on said tape recorder, means including controls for operating the apparatus in successive stages, a roll of translucent paper, said translucent paper being arrangeable on said screen, and means independent of said projector and tape recorder for winding said translucent paper in one direction or the other on said screen, whereby the paper is adapted for reception of student written or drawn responses, the latter means including motors and switch means controlling said motors.
Claim 4
Dependent Claim
124 words
A scripto audio-visual educational apparatus comprising a slide projector, a screen on which images of the slides can be projected, a tape recorder having at least two tracks, means for operating said tape recorder in synchronism with said projector, means for memorizing selected slides and acting on said projector and on said tape recorder, means including controls for operating the apparatus in successive stages, a roll of translucent paper, said translucent paper being arrangeable on said screen, and means independent of said projector and tape recorder for winding said translucent paper in one direction or the other on said screen, whereby the paper is adapted for reception of student written or drawn responses, the latter means including motors and switch means controlling said motors.
Claim 5
Dependent Claim
71 words
Apparatus as claimed in claim 1, wherein said controls include a first control means for the selection of selected slides, a second control means for calling the selected slides one by one, a third control means to erase all memory of selected slides from a previous operation and to advance the slides one by one, and a fourth control means for placing the projector and the tape recorder in zero position.
Claim 6
Dependent Claim
30 words
Apparatus as claimed in claim 2, further comprising means for the formation of control signals for the duration of presentation of the slides at the time of their sequential advance.
Claim 7
Dependent Claim
21 words
Apparatus as claimed in claim 1, said coNtrols further comprising a fifth control means for selectively effecting the projector-tape recorder synchronization.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |