US4371168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pocket-size chess game
Assignee: Individual
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Filing: 1981-06-08
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Granted: 1983-02-01
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Expires: 2001-06-08
Abstract
Abstract A pocket-size chess set is disclosed, comprising a pair of identical panels pivotally secured at their inner edges to a narrow third intermediate panel, whereby the first two panels may be folded together to form a case with the third panel acting as a spine. Two slidable para-magnetic checkerboard halves are provided, on the top surface of each of the first two panels. Thirty-two chessmen are also provided. Each of the latter is provided with a magnetic element on its back and bottom surfaces. Thus, each chessman may be placed either horizontally or vertically on the checkerboard halves. The squares of the latter have a recessed portion and their margins are also recessed for the placing of captured chessmen thereon. The case is kept in closed position by the magnetic attraction of the chessmen for one another.
Inventors
- 👤 Robert C. Dupuis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:00
CPC Classifications
A; A63; A63F; A63F3/00; A63F3/02; A63F3/027; A63F3/00173; A63F3/0023; A63F3/00533; A63F2003/00233; A63F2003/00236; A63F2003/00239; A63F3/00261; A63F2003/00324; A63F2003/00331; A63F2003/00558
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
203 words
A pocket-size chess set comprising a pair of identical flat and generally rectangular panels; a third narrow, intermediate panel, each of the said pair of panels having an inner edge pivotally secured to one side of said third panel, the latter extending between said inner edges of said pair of panels; each of said pair of panels having a top surface, said top surface being provided with half a slidable checkerboard; each said half being made of a para-magnetic material and slidable from a first retracted position and a second play position, wherein their inner sides touch over said third panel, forming a complete checkerboard; means to slidably retain each said half on each said top surface; means to limit the inward movement of each said checkerboard half when the latter are in play position; further comprising a set of thirty-two chessmen; each said chessman having a back surface provided with a small permanent magnet which projects slightly below the bottom of each said chessman, whereby said chessmen may be placed either vertically or horizontally on said checkerboard halves, each of the latter having a lateral and outer side margin for the placing of captured chessmen thereon during the course of a game.
Claim 2
Dependent Claim
203 words
A pocket-size chess set comprising a pair of identical flat and generally rectangular panels; a third narrow, intermediate panel, each of the said pair of panels having an inner edge pivotally secured to one side of said third panel, the latter extending between said inner edges of said pair of panels; each of said pair of panels having a top surface, said top surface being provided with half a slidable checkerboard; each said half being made of a para-magnetic material and slidable from a first retracted position and a second play position, wherein their inner sides touch over said third panel, forming a complete checkerboard; means to slidably retain each said half on each said top surface; means to limit the inward movement of each said checkerboard half when the latter are in play position; further comprising a set of thirty-two chessmen; each said chessman having a back surface provided with a small permanent magnet which projects slightly below the bottom of each said chessman, whereby said chessmen may be placed either vertically or horizontally on said checkerboard halves, each of the latter having a lateral and outer side margin for the placing of captured chessmen thereon during the course of a game.
Claim 3
Dependent Claim
52 words
A pocket-size chess set as claimed in claim 1, wherein said means to slidably retain each said half consists of an inwardly-projecting flange provided all along the lateral and outer periphery of each said pair of panels; said flange defining a peripheral slot and said halves being slidingly engaged in said slot.
Claim 4
Dependent Claim
62 words
A pocket-size chess set as claimed in claim 2, wherein said means to limit the inward movement of each said checkerboard half consists of a notch located on each lateral edge of each half and adjacent the inner edge thereof; and a protuberance formed on said flange adjacently thereof, said notch engaging said protuberance when said halves are slid into play position.
Claim 5
Dependent Claim
35 words
A pocket-size chess set as claimed in claim 1, wherein each checkerboard half is provided with an upwardly-projecting tab secured adjacent its outer edge, whereby each said half may be slid into either said position.
Claim 6
Dependent Claim
33 words
A pocket-size chess set as claimed in claim 1, wherein each said checkerboard half has a plurality of squares for chess and each of these squares is provided with a central recessed portion.
Claim 7
Dependent Claim
20 words
A pocket-size chess set as claimed in claim 5, wherein said margin of each said checkerboard half is also recessed.
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) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |