Patent US4325897A successfully refreshed from Google Patents.
US3733719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape recorder for teaching, particularly for language teaching
Assignee: Individual
•
Filing: 1971-03-31
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Granted: 1973-05-22
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Expires: 1991-03-31
Abstract
Abstract Tape recorder for teaching utilizing a tape having a track for recordal of a student''s voice. The recorder has spaced-apart recording and reproducing heads for the student''s track. A tape guiding disc carries this reproducing head and is rotatable by the tape during recordal of the students voice to increase the spacing between the recording and the reproducing heads. The disc can be automatically arrested on completion of a recording which is then immediately reproduced as the tape travels past the stationary reproducing head.
Inventors
- 👤 E Ley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:28
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/36; G09; G09B; G09B5/00; G09B5/04; G11B15/00; G11B15/18; G11B15/1808
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
Tape recorder for teaching utilizing a tape having a track for recording a student''s voice, comprising a recording head, tape transport means including a rotatable tape guiding disc around the periphery of which the tape runs after passing said recording head, a reproducing head carried by said tape guiding disc in position to contact tape on said disc, means for initially holding said disc in selected position means for releasing said disc for rotation by the tape during recording of the student''s voice and means for automatically arresting said tape guiding disc upon completion of such recording to permit travel of the tape past the reproducing head then held stationary, thereby to reproduce the recording.
Claim 2
Dependent Claim
115 words
Tape recorder for teaching utilizing a tape having a track for recording a student''s voice, comprising a recording head, tape transport means including a rotatable tape guiding disc around the periphery of which the tape runs after passing said recording head, a reproducing head carried by said tape guiding disc in position to contact tape on said disc, means for initially holding said disc in selected position means for releasing said disc for rotation by the tape during recording of the student''s voice and means for automatically arresting said tape guiding disc upon completion of such recording to permit travel of the tape past the reproducing head then held stationary, thereby to reproduce the recording.
Claim 3
Dependent Claim
54 words
Tape recorder according to claim 1, in which said holding means is operable to hold said tape guiding disc stationary during an initial portion of said recording of the student''s voice and said releasing means is operative to release said disc just before the portion of the tape thus recorded reaches said reproducing head.
Claim 4
Dependent Claim
64 words
Tape recorder according to claim 1, in which said holding means comprises a cam plate fixed to said tape guiding disc for rotation therewith and having a cam track concentric with said disc except for a recess at a selected position, a roller engageable with said cam track and in said recess, and means for biasing said roller into engagement with said cam track.
Claim 5
Dependent Claim
29 words
Tape recorder according to claim 3, in which said releasing means comprises a solenoid for withdrawing said roller from said cam track and circuit means for energizing said solenoid.
Claim 6
Dependent Claim
42 words
Tape recorder according to claim 1, in which said arresting means comprises means for releasing said tape guiding disc upon completion of such reproduction to permit rotation of said disc by the tape to a starting position determined by said holding means.
Claim 7
Dependent Claim
28 words
Tape recorder according to claim 1, in which said arresting means comprises friction brake means acting on said tape guiding disc and means for actuating said brake means.
Claim 8
Dependent Claim
20 words
Tape recorder according to claim 6, in which said actuating means comprises a solenoid and circuit means controlling said solenoid.
References Cited (Backward Citations)
US3491462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |