US4176474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual teaching aid for number concept
Assignee: Individual
•
Filing: 1978-09-01
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Granted: 1979-12-04
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Expires: 1998-09-01
Abstract
Abstract An educational device for teaching whole numbers to children; the device including a board having horizontal rows of pockets, and each pocket of the rows is identified either as "ones", "tens", "hundreds" etc. in proper sequence, so that cards having numerical digits printed on them can be placed by a child in the pockets, in response to a whole number, printed on a different set of cards, and which are called out by a teacher.
Inventors
- 👤 Rita O'Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:25
CPC Classifications
G; G09; G09B; G09B1/00; G09B1/02; G09B1/04; G09B1/06; G09B1/14; G09B19/00; G09B19/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A visual teaching aid for number concept, comprising in combination, a display board, a first deck of cards for selective display on said board, and a second deck of cards each one of which has a whole number printed thereupon in words, each card of said first deck having a numerical digit printed thereupon, and said board having at least one horizontal row of stations in each of which one said card of said first deck is placable, a right endmost station being identified as "ones", and successively next left stations being identified as "tens", "hundreds", "thousand", "ones", "tens", "hundreds", "million" and "ones".
Claim 2
Dependent Claim
103 words
A visual teaching aid for number concept, comprising in combination, a display board, a first deck of cards for selective display on said board, and a second deck of cards each one of which has a whole number printed thereupon in words, each card of said first deck having a numerical digit printed thereupon, and said board having at least one horizontal row of stations in each of which one said card of said first deck is placable, a right endmost station being identified as "ones", and successively next left stations being identified as "tens", "hundreds", "thousand", "ones", "tens", "hundreds", "million" and "ones".
Claim 3
Dependent Claim
31 words
The combination as set forth in claim 1 wherein said stations comprise pockets that allow visibility thereinto from a front side to see said digits of said first cards placed therein.
Claim 4
Dependent Claim
78 words
The combination as set forth in claim 1 wherein said board is molded with a horizontal groove forming said row of stations, each said station comprising a sidewardly inclined rear facet having a permanent magnet, and each said card being made of sheet steel; and means for snugly fitting said cards in said stations when a leftmost thereof is positioned first, and successively a next right card is then positioned, said means comprising overlapping flanges on said cards.
References Cited (Backward Citations)
US384959A
Cited
US1081815A
Cited
US2853804A
Cited
FR1400572A
Cited
US3360874A
Cited
GB1208949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |