US3800437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational apparatus
Assignee: Individual
•
Filing: 1972-12-01
•
Granted: 1974-04-02
•
Expires: 1992-12-01
Abstract
Abstract Various educational apparatus utilizing teaching sheets or film for providing a positive reward signal in response to depression of the correct symbol or a teaching sheet or depression of a switch corresponding to the correct, projection symbol. In one embodiment of this invention, a musical educational device is provided to produce tones corresponding to musical symbols on a teaching sheet.
Inventors
- 👤 J Lamberson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:25
CPC Classifications
G; G09; G09B; G09B7/00; G09B7/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
A positively responsive educational device, comprising: a case; a support panel mounted with said case, said case and support panel cooperating to receive a learning sheet; first and second electrical conductors mounted in spaced relationship on said support panel, said first conductor being thicker than said second conductor; electrical signal circuit means mounted with said casing and electrically connected to said first and second spaced conductors for producing a signal in response to electrical connection of said first and second spaced conductors; and said learning sheet being a flexible material having teaching symbols on the upper surface thereof and an electrical connector mounted on the underside thereof and positioned to be moved into operative engagement initially with said first conductor and subsequently with said second conductor whereby a signal is provided in response to the depressing of said flexible learning sheet.
Claim 2
Dependent Claim
141 words
A positively responsive educational device, comprising: a case; a support panel mounted with said case, said case and support panel cooperating to receive a learning sheet; first and second electrical conductors mounted in spaced relationship on said support panel, said first conductor being thicker than said second conductor; electrical signal circuit means mounted with said casing and electrically connected to said first and second spaced conductors for producing a signal in response to electrical connection of said first and second spaced conductors; and said learning sheet being a flexible material having teaching symbols on the upper surface thereof and an electrical connector mounted on the underside thereof and positioned to be moved into operative engagement initially with said first conductor and subsequently with said second conductor whereby a signal is provided in response to the depressing of said flexible learning sheet.
Claim 3
Dependent Claim
59 words
The structure set forth in claim 1, including: a plurality of said first and second conductors mounted with said support panel, each of said first conductors being positioned adjacent to a second conductor to form a grid set; and said electrical signal circuit means being electrically connected to each of said first and second conductors in a grid set.
Claim 4
Dependent Claim
67 words
The structure set forth in claim 2, including: said upper surface of said learning sheet having a plurality of teaching symbols in rows, an electrical connector mounted on the underside of said teaching sheet in alignment with a symbol in each row, each of said electrical connectors being positioned to electrically interconnect said first and second conductors of a grid set upon depression of said teaching sheet.
Claim 5
Dependent Claim
29 words
The structure set forth in claim 1, wherein said electrical signal circuit means includes: means for preventing said signal in response to accidental depression of said flexible learning sheet.
Claim 6
Dependent Claim
27 words
The structure set forth in claim 3, wherein: the number of said grid sets is one less than the number of said teaching symbols in a row.
Claim 7
Dependent Claim
18 words
The structure set forth in claim 1, wherein said electrical signal circuit means includes: an oscillating sound signal.
Claim 8
Dependent Claim
16 words
The structure set forth in claim 1, wherein: said electrical connector includes silk screen conductive ink.
Claim 9
Dependent Claim
16 words
The structure set forth in claim 1, wherein: said electrical connector includes letter press conducting ink.
References Cited (Backward Citations)
US2997793A
Cited
US3579857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |