Patent US4536160A successfully refreshed from Google Patents.
US4536160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer keyboard educational toy
Assignee: Individual
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Filing: 1984-09-21
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Granted: 1985-08-20
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Expires: 2004-09-21
Abstract
Abstract An educational toy for teaching small children alphanumeric characters and their positions on a conventional keyboard includes a flat base unit having a plurality of surface slots extending partially through the base and second slots between the bottom of the surface slots and the bottom surface of the base to a metallic bottom plate. Keys are represented on the top surfaces of bars having exterior shapes that fit within the surface slots and with magnet tipped extensions that fit within the second slots. The slots and keyboard bars are uniquely shaped so that each bar can only fit into its respective slot to form a completed assembly similar to a conventional keyboard.
Inventors
- 👤 John F. Hatfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:23
CPC Classifications
G; G09; G09B; G09B13/00; A; A63; A63F; A63F3/00; A63F3/04; A63F3/0423; A63F3/00173; A63F3/00574
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
154 words
An educational toy comprising: a base unit having substantially coplanar top and bottom surfaces; a plurality of first slots in the top surface of said base unit, said slots extending partially through the thickness of said base unit and arranged in a plurality of substantially parallel rows across said top surface; at least one second slot formed in a portion of the bottom of each of said plurality of first slots, each of said second slots extending through the lower surface of said base unit, the configuration of the combined first and second slots being unique to each first slot in the plurality; and a plurality of keyboard bars each having a top and a bottom surface, each bar in said plurality having an exterior dimension adapted to fit within at least one of said first slots, each bar having a bottom surface extension that fits into a second slot in said base unit.
Claim 2
Dependent Claim
154 words
An educational toy comprising: a base unit having substantially coplanar top and bottom surfaces; a plurality of first slots in the top surface of said base unit, said slots extending partially through the thickness of said base unit and arranged in a plurality of substantially parallel rows across said top surface; at least one second slot formed in a portion of the bottom of each of said plurality of first slots, each of said second slots extending through the lower surface of said base unit, the configuration of the combined first and second slots being unique to each first slot in the plurality; and a plurality of keyboard bars each having a top and a bottom surface, each bar in said plurality having an exterior dimension adapted to fit within at least one of said first slots, each bar having a bottom surface extension that fits into a second slot in said base unit.
Claim 3
Dependent Claim
53 words
The educational toy claimed in claim 1 wherein the top surface of each of said plurality of keyboard bars is configured and labelled to resemble a key on a computer keyboard, and wherein said plurality of keyboard bars, when positioned in their respective slots in said base unit, appear in correct keyboard order.
Claim 4
Dependent Claim
61 words
The educational toy claimed in claim 1 wherein the bottom surface of said base unit has an attached ferromagnetic cover plate covering each second slot in said base unit, and wherein the bottom surface of a bottom surface extension on each of said keyboard bars has a magnet embedded therein for magnetic adhesion of the keyboard bar to said cover plate.
Claim 5
Dependent Claim
17 words
The educational toy claimed in claim 2 wherein said base unit has a substantially rectangular surface configuration.
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) | 1988-08-19 | 1989-02-18 | 1989-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-19 | 1993-02-18 | 1993-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-19 | 1997-02-18 | 1997-08-20 | $7700.00 | Window Closed / Lapsed |