US3675341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational device
Assignee: Epoch Co Ltd
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Filing: 1970-09-17
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Granted: 1972-07-11
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Expires: 1990-09-17
Abstract
Abstract An educational device featuring a playing board possessing electrical insulation characteristics, bearing two rows of indicia to be matched by the user and provided with selected cutout portions defining coded answer means to the matching of indicia in opposite rows, a housing adapted to receive the playing board and including individual actuating mechanisms located adjacent each indicia, a signal system and electrical circuit means within the housing energizing the signal system only as the actuating mechanisms adjacent matching indicia are operated by the user.
Inventors
- 👤 Teruo Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:31
CPC Classifications
G; G09; G09B; G09B7/00; G09B7/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
183 words
An educational device, comprising: a. a board bearing two rows of indicia and provided with means defining a coded answer to the arrangement of indicia permitting matching of same and including selected cut-out portions, said board further including an electrically insulating medium; and b. a housing adapted to receive said board including i. a plurality of actuating mechanisms adjacent said indicia, ii. signal means, and iii. means acting in conjunction with said means defining a coded answer to energize said signal means only as actuating mechanisms adjacent matching indicia in opposite rows are operated by the user including a first series of segmented electrical contacts, each of said contacts containing a plurality of first contact points, a second series of continuous electrical contacts, each of said contacts including a plurality of second contact points, means biasing said first and second points in resilient contact with each other such that when said board is positioned therebetween electrical contact between said first and second points is limited to those of said first and second contact points located within said coded cut-out portions of said board.
Claim 2
Dependent Claim
183 words
An educational device, comprising: a. a board bearing two rows of indicia and provided with means defining a coded answer to the arrangement of indicia permitting matching of same and including selected cut-out portions, said board further including an electrically insulating medium; and b. a housing adapted to receive said board including i. a plurality of actuating mechanisms adjacent said indicia, ii. signal means, and iii. means acting in conjunction with said means defining a coded answer to energize said signal means only as actuating mechanisms adjacent matching indicia in opposite rows are operated by the user including a first series of segmented electrical contacts, each of said contacts containing a plurality of first contact points, a second series of continuous electrical contacts, each of said contacts including a plurality of second contact points, means biasing said first and second points in resilient contact with each other such that when said board is positioned therebetween electrical contact between said first and second points is limited to those of said first and second contact points located within said coded cut-out portions of said board.
Claim 3
Dependent Claim
160 words
An educational device as in claim 1, wherein B. said means acting in conjunction with said meanS defining a coded answer to energize said signal means further including two rows of first electrical conducting plates mounted within said housing adjacent said actuating mechanisms, means electrically connecting those of said first conducting plates in one row to said first series of segmented electrical contacts and connecting the remainder of said first conducting plates in the other row to said second series of continuous electrical contacts, insulating strips positioned transversely of each row of said first conducting plates and provided with openings adjacent said first conducting plates, second electrical conducting plates positioned adjacent said insulating strips permitting contact between said first and second conducting plates as said actuating mechanisms force said first conducting plates through said openings of said insulating strips into engagement with said first conducting plates and means electrically connecting said first and second conducting plates to said signal means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |