US3769721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational device
Assignee: Individual
•
Filing: 1972-02-14
•
Granted: 1973-11-06
•
Expires: 1992-02-14
Abstract
Abstract An educational device in which a problem is presented to a child and in which the device is set to be keyed to the correct answer in such a manner that answer carrying members can be mounted in the device only when the correct answer is selected by the child. The answers are embodied in one or more individual card-like components and the device is preset so that the device will accept only the correct card-like components in response to any particular problem.
Inventors
- 👤 G Reiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:36
CPC Classifications
G; G09; G09B; G09B3/00; G09B3/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
106 words
An educational device comprising a tray having a plurality of card receiving pockets therein, a plurality of first cards each having a plurality of apertures therein and carrying different indicia identifying each of said apertures, a plurality of second cards each having an aperture therein and indicia thereon, the indicia on each of said second cards being identical to only one of the indicia on said first cards, said aperture in said second card being positioned for alignment with the aperture in said first card which corresponds to the indicia on said second card, and a plurality of pins sized to be received in said apertures.
Claim 2
Dependent Claim
106 words
An educational device comprising a tray having a plurality of card receiving pockets therein, a plurality of first cards each having a plurality of apertures therein and carrying different indicia identifying each of said apertures, a plurality of second cards each having an aperture therein and indicia thereon, the indicia on each of said second cards being identical to only one of the indicia on said first cards, said aperture in said second card being positioned for alignment with the aperture in said first card which corresponds to the indicia on said second card, and a plurality of pins sized to be received in said apertures.
Claim 3
Dependent Claim
28 words
An educational device as claimed in claim 1 wherein said cards and said pockets include cooperating alignment means for assuring proper positioning of said cards in said pockets.
Claim 4
Dependent Claim
28 words
An educational device as claimed in claim 2 wherein said cooperating alignment means includes projections on said trays in each of said pockets and keyways in said cards.
Claim 5
Dependent Claim
25 words
An educational device as claimed in claim 3 wherein each pocket includes a recess for permitting access to a card when positioned in a pocket.
Claim 6
Dependent Claim
29 words
An educational device as claimed in claim 1 wherein each of said pins includes a generally cylindrical shaft and a substantially flat head at one end of said shaft.
Claim 7
Dependent Claim
22 words
An educational device as claimed in claim 1 and further including a plurality of third cards each depicting thereon an identifiable object.
Claim 8
Dependent Claim
24 words
An educational device as claimed in claim 6 wherein said plurality of third cards are sized to be received in one of said pockets.
References Cited (Backward Citations)
US2505230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |