US4360347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mathematical educational game devices
Assignee: Individual
•
Filing: 1980-12-31
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Granted: 1982-11-23
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Expires: 2000-12-31
Abstract
Abstract A two dimensional educational game device (10) in accordance with a first embodiment of the invention includes a plurality of flat rectangular members (15, 30) having arcuate front and rear ends (21, 25) and non-parallel opposite sides (23, 23a) such that said members, when properly interfitted, form a circular pattern. Each member (15) has a number of arithmetic operator printed thereon to establish an array of radially and circumferentially correct mathematical equations. A three dimensional educational device (40) in accordance with a second embodiment of the invention includes a plurality of stackable trays (45) having a circumferential flange (51) extending around each tray (45). Rectangular block shaped members (60) are circumferentially positioned in each tray. Each member (60) includes an outwardly extending surface portion (64) having upper and lower inclined surfaces (66, 68). Numbers or arithmetic operators printed on the outwardly extending surfaces form horizontal and longitudinally correct arithmetic equations when the members (60) are properly positioned on the trays and the trays are properly stacked.
Inventors
- 👤 Mansour Ghaznavi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:33
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/08; A63F9/0803; A63F9/0811; A63F9/12; G; G09; G09B; G09B19/00; G09B19/02; A63F2009/0815
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
53 words
A two dimensional educational puzzle device, comprising a plurality of interfitting members forming a circular shape when properly interfitted in contact with each other, said members having a plurality of numbers and arithmetic operators printed thereon, said numbers and operators on said members, when properly interfitted, establishing radially and circumferentially correct mathematical equations.
Claim 2
Dependent Claim
53 words
A two dimensional educational puzzle device, comprising a plurality of interfitting members forming a circular shape when properly interfitted in contact with each other, said members having a plurality of numbers and arithmetic operators printed thereon, said numbers and operators on said members, when properly interfitted, establishing radially and circumferentially correct mathematical equations.
Claim 3
Dependent Claim
30 words
An educational device according to claim 1, wherein said interfitting members have shapes such that said members, when properly interfitted, form an array of concentric rings of successively increasing radii.
Claim 4
Dependent Claim
26 words
An educational device according to claim 1, wherein said members include a plurality of sector shaped pieces arranged to form said circular pattern when properly interfitted.
Claim 5
Dependent Claim
20 words
An educational device according to claim 1, wherein a number or arithmetic operator is located on each of said members.
Claim 6
Dependent Claim
28 words
An educational device according to claim 3 or 4, wherein each of said sectors includes four members arranged in a radial direction to form a mathematically correct equation.
Claim 7
Dependent Claim
41 words
An educational device according to claim 1, further comprising a substantially transparent mask rotatingly covering said circular shape, said mask having preselected opaque areas positioned in spaced radial and circumferential intervals, to selectively cover or expose particular numbers or arithmetic operators.
Claim 8
Dependent Claim
85 words
A three dimensional educational and puzzle device, comprising: (a) a plurality of block members, each of said members having an outwardly extending surface portion with a number or arithmetic operator printed thereon; and (b) a plurality of circular trays, said trays adapted to be stacked and spaced apart from each other, said members adapted to be positioned upon said trays, the numbers and operators on said outwardly extending block surface portions when said blocks are properly relatively positioned forming mathematically correct equations longitudinally and circumferentially.
Claim 9
Dependent Claim
85 words
A three dimensional educational and puzzle device, comprising: (a) a plurality of block members, each of said members having an outwardly extending surface portion with a number or arithmetic operator printed thereon; and (b) a plurality of circular trays, said trays adapted to be stacked and spaced apart from each other, said members adapted to be positioned upon said trays, the numbers and operators on said outwardly extending block surface portions when said blocks are properly relatively positioned forming mathematically correct equations longitudinally and circumferentially.
Claim 10
Dependent Claim
52 words
An educational and puzzle device according to claim 7, wherein each of said trays includes a stem projecting upwardly from an upper surface of the tray, and a recess formed in a bottom surface of the tray adapted to mate with the stem of a lower adjacent tray forming the stacked structure.
Claim 11
Dependent Claim
87 words
A three dimensional educational and puzzle device, comprising: (a) a plurality of circular trays, each of said trays including a raised center portion defining a circumferentially disposed mounting flange; (b) a plurality of members having an outwardly extending surface with a number or arithmetic operator printed thereon, said members adapted to be positioned within each of said mounting flanges; and (c) fastening means for securing said circular trays in stacked relationship, enabling said outwardly extending surfaces of the members to form circumferential and longitudinal, mathematically correct equations.
Claim 12
Dependent Claim
87 words
A three dimensional educational and puzzle device, comprising: (a) a plurality of circular trays, each of said trays including a raised center portion defining a circumferentially disposed mounting flange; (b) a plurality of members having an outwardly extending surface with a number or arithmetic operator printed thereon, said members adapted to be positioned within each of said mounting flanges; and (c) fastening means for securing said circular trays in stacked relationship, enabling said outwardly extending surfaces of the members to form circumferential and longitudinal, mathematically correct equations.
Claim 13
Dependent Claim
15 words
An educational device according to claim 9, wherein said members have substantially rectangular horizontal cross-sections.
Claim 14
Dependent Claim
35 words
An educational device according to claim 10, wherein said outwardly extending surfaces each includes a pyramid shaped projection having outwardly converging inclined surfaces, a number or arithmetic operator being printed on each of said surfaces.
Claim 15
Dependent Claim
47 words
An educational device according to claim 9, wherein said fastening means includes a stem projecting upwardly from an upper surface of said circular trays and a recess formed in the lower surfaces of said trays, wherein said fastening means mate to form a rotatable three dimensional array.
Claim 16
Dependent Claim
35 words
An educational device according to claim 11, wherein said members are capable of being rotated for selectively exposing different inclined surfaces, thereby increasing and changing the number of arithmetic equations formed in the educational device.
Claim 17
Dependent Claim
71 words
An educational device according to claim 7 or 9, wherein said block members each includes a recess formed within a rear surface portion of the block member, and the raised center portion of each of said trays includes a plurality of stem portions outwardly projecting from the raised center portion at circumferential spaced intervals, said recesses adapted to receive said stems for secure attachment of the members within the mounting flanges.
Claim 18
Dependent Claim
165 words
A three dimensional educational and puzzle device, comprising: (a) a plurality of block members, each of said members having a stem portion projecting outwardly from an outwardly facing surface portion of the block member; (b) a plurality of pyramid shaped portions, each of said pyramid portions having a plurality of outwardly converging inclined surfaces with a number or operator printed on each of the surfaces, and a rear surface including a recess adapted for receiving the stem portions of the block members for securing the pyramid portions to the block members, thereby enabling selective upward positioning of different inclined surfaces by rotating the pyramid portions for forming different mathematically correct equations; and (c) a plurality of circular trays, said trays adapted to be stacked and spaced apart from each other, said members adapted to be positioned upon said trays, the numbers and operators on said inclined surface portions forming mathematically correct equations longitudinally and circumferentially when said blocks are properly relatively positioned within the trays.
Claim 19
Dependent Claim
165 words
A three dimensional educational and puzzle device, comprising: (a) a plurality of block members, each of said members having a stem portion projecting outwardly from an outwardly facing surface portion of the block member; (b) a plurality of pyramid shaped portions, each of said pyramid portions having a plurality of outwardly converging inclined surfaces with a number or operator printed on each of the surfaces, and a rear surface including a recess adapted for receiving the stem portions of the block members for securing the pyramid portions to the block members, thereby enabling selective upward positioning of different inclined surfaces by rotating the pyramid portions for forming different mathematically correct equations; and (c) a plurality of circular trays, said trays adapted to be stacked and spaced apart from each other, said members adapted to be positioned upon said trays, the numbers and operators on said inclined surface portions forming mathematically correct equations longitudinally and circumferentially when said blocks are properly relatively positioned within the trays.
References Cited (Backward Citations)
US530836A
Cited
US802807A
Cited
US2320832A
Cited
US2202078A
Cited
US2645038A
Cited
US2655738A
Cited
US2811360A
Cited
US2981009A
Cited
US2965980A
Cited
US3103750A
Cited
US3267590A
Cited
US3541707A
Cited
GB1304882A
Cited
US3720008A
Cited
US3904207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-22 | 1986-05-24 | 1986-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-22 | 1990-05-24 | 1990-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-22 | 1994-05-24 | 1994-11-23 | $7700.00 | Window Closed / Lapsed |