US3908288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching device
Assignee: Individual
•
Filing: 1973-11-19
•
Granted: 1975-09-30
•
Expires: 1993-11-19
Abstract
Abstract A teaching device comprising sound recording means on which are recorded a plurality of individual sound units. The sound units are selectively detected and audibly reproduced in any desired sequence upon operation of respective key members. The device comprises means for preventing repetition of each sound unit during one operation of the respective key member.
Inventors
- 👤 Jr Cecil Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:29
CPC Classifications
G; G09; G09B; G09B5/00; G09B5/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
175 words
A teaching device comprising: sound recording means having a plurality of individual sound units recorded thereon; sound detecting means for selectively detecting the sound units recorded on said sound recording means; amplifier and sound reproducing means for amplifying and audibly reproducing the sound units detected by said sound detecting means; actuator means comprising a plurality of key members, said actuator means being operatively connected to said sound recording means and to said sound detecting means and including means operative upon operation of each one of said key members to selectively operably connect said sound recording means with said sound detecting means and maintain said connection for a time span at least as long as the duration of a respective one of said sound units without the necessity for operating said key member for said duration to detect said respective one of said sound units irrespective of any prior operation of any of the other key members; and means for preventing repetition of each of said sound units during one operation of the respective key member.
Claim 2
Dependent Claim
175 words
A teaching device comprising: sound recording means having a plurality of individual sound units recorded thereon; sound detecting means for selectively detecting the sound units recorded on said sound recording means; amplifier and sound reproducing means for amplifying and audibly reproducing the sound units detected by said sound detecting means; actuator means comprising a plurality of key members, said actuator means being operatively connected to said sound recording means and to said sound detecting means and including means operative upon operation of each one of said key members to selectively operably connect said sound recording means with said sound detecting means and maintain said connection for a time span at least as long as the duration of a respective one of said sound units without the necessity for operating said key member for said duration to detect said respective one of said sound units irrespective of any prior operation of any of the other key members; and means for preventing repetition of each of said sound units during one operation of the respective key member.
Claim 3
Dependent Claim
38 words
A teaching device according to claim 1 wherein said sound detecting means comprises a plurality of sound detecting members, each of said sound detecting members being disposed so as to detect a respective one of said sound units.
Claim 4
Dependent Claim
32 words
A teaching device according to claim 2 wherein said sound recording means comprises a pLurality of sound recording media, each of said sound recording media having a single sound unit recorded thereon.
Claim 5
Dependent Claim
59 words
A teaching device according to claim 2 further including a rotatable drive member and a plurality of driven wheels normally spaced from said drive member, each of said driven wheels having one of said sound recording media thereon, said actuator means being operative to bring said drive member and a respective one of said driven wheels into driving relationship.
Claim 6
Dependent Claim
123 words
A teaching device according to claim 4 further including a plurality of support arms mounted on pivot means, each of said driven wheels being mounted on one end of a respective one of said support arms, said device further comprising a plurality of electric operator means, each of said electric operator means being operatively connected to a respective one of said support arms and operative to rotate the support arm about said pivot means, and said actuator means including electric circuit means operative upon operation of each of said key members to actuate a respective one of said electric operator means thereby rotating said support arm about said pivot means so as to bring said driven wheel into contact with said drive member.
Claim 7
Dependent Claim
14 words
A teaching device according to claim 5 wherein said electric operator means comprise solenoids.
Claim 8
Dependent Claim
29 words
A teaching device according to claim 5 further including stop means for preventing further rotation of said driven wheel when said sound unit has passed said sound detecting member.
Claim 9
Dependent Claim
24 words
A teaching device according to claim 7 wherein said sound detecting members are magnetic tape heads and said sound recording media are magnetic tapes.
Claim 10
Dependent Claim
30 words
A teaching device according to claim 8 wherein said electric operator means comprise solenoids, each of said solenoids being activated by operation of a respective one of said key members.
Claim 11
Dependent Claim
74 words
A teaching device according to claim 9 further comprising a plurality of latching relays, operation of each of said key members serving to close a respective one of said latching relays, each of said latching relays upon closing serving to connect a respective one of said sound detecting members to said amplifier and said sound reproducing means, each of said latching relays further providing an alternate circuit to a respective one of said solenoids.
Claim 12
Dependent Claim
80 words
A teaching device according to claim 10 wherein each of said support arms has a normally closed switch mounted thereon, each of said switches being connected to a respective one of said latching relays and, upon being opened, serving to open said latching relay, and there are means on each of said driven wheels positioned to open said switch on the support arm on which the driven wheel is mounted when said sound unit has passed said sound detecting member.
Claim 13
Dependent Claim
39 words
A teaching device according to claim 2 wherein said actuator means includes a plurality of actuator systems each including a respective one of said key members and each operatively connected to a respective one of said sound detecting members.
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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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |