US4256307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic game
Assignee: LEE RICHARD DALE KREBS OK
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Filing: 1979-11-29
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Granted: 1981-03-17
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Expires: 1999-11-29
Abstract
Abstract A magnetic game comprising a gameboard for use with a magnetizable metal game ball. The gameboard comprises a non-metallic, non-magnetizable rectangular block having a central recess, a thin, non-magnetizable rectangular top plate and a plurality of target areas on a portion of the top plate over the central recess. A thin magnetizable metallic sheet, substantially the same size and shape as the recess, is disposed at the bottom of the recess. A magnetic plate is disposed in the recess over the metallic sheet. A plurality of smaller individual magnetic target elements is disposed on the magnetic plate wherein each element is disposed beneath a target area on the gameboard whereby the game ball is rolled on the top plate and comes to rest over one of the magnetic elements.
Inventors
- 👤 Lesley P. Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:45
CPC Classifications
A; A63; A63F; A63F7/00; A63F7/0088
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
A magnetic game comprising a gameboard for use with a magnetizable metal game ball, said gameboard comprising a non-magnetizable block of a pre-determined size and shape having a central recess, said central recess having a bottom and being of a predetermined size and shape, a thin non-magnetizable top plate of substantially the same size and shape of said block disposed over said block and said central recess therein, means defining a plurality of target areas on a portion of the said top plate over said recess, a thin magnetizable metallic sheet of substantially the same size and shape of said recess disposed at said bottom of said recess, a magnetic plate of similar shape and smaller size relative to said sheet disposed in said recess over said metallic sheet, a plurality of individual magnetic target elements of smaller size than said magnetic plate disposed on said magnetic plate with one said magnetic element disposed beneath each said target area whereby said magnetizable game ball can be rolled on said top plate over said central recess to come to rest over one of said magnetic target elements.
Claim 2
Dependent Claim
186 words
A magnetic game comprising a gameboard for use with a magnetizable metal game ball, said gameboard comprising a non-magnetizable block of a pre-determined size and shape having a central recess, said central recess having a bottom and being of a predetermined size and shape, a thin non-magnetizable top plate of substantially the same size and shape of said block disposed over said block and said central recess therein, means defining a plurality of target areas on a portion of the said top plate over said recess, a thin magnetizable metallic sheet of substantially the same size and shape of said recess disposed at said bottom of said recess, a magnetic plate of similar shape and smaller size relative to said sheet disposed in said recess over said metallic sheet, a plurality of individual magnetic target elements of smaller size than said magnetic plate disposed on said magnetic plate with one said magnetic element disposed beneath each said target area whereby said magnetizable game ball can be rolled on said top plate over said central recess to come to rest over one of said magnetic target elements.
Claim 3
Dependent Claim
39 words
A magnetic game as set forth in claim 1 wherein said magnetic plate comprises a one-piece permanent ceramic magnet and said magnetic target elements comprise smaller permanent ceramic magnets whereby said plate and said elements constitute a magnetic circuit.
Claim 4
Dependent Claim
42 words
A magnetic game as set forth in claim 2 wherein each said magnetic target element comprises a central hole providing a neutral area for the alignment of said game ball on the center of said target area over said magnetic target element.
Claim 5
Dependent Claim
24 words
A magnetic game as set forth in claim 2 wherein said metallic sheet provides an amplifying means and a keeper for said magnetic circuit.
Claim 6
Dependent Claim
48 words
A magnetic game as set forth in claim 1 including means for adjusting and maintaining said gameboard in a level position which comprises an adjustable stand affixed to the underneath side of said gameboard and a visible bubble mounted flush on said top plate above said central recess.
Claim 7
Dependent Claim
44 words
A magnetic game as set forth in claim 1 wherein at least one of said magnetic target elements comprises a magnetizable core surrounded by an electrical coil such that an electrical current flowing through said coil will induce magnetism in said magnetic target element.
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) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |