US3776554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular playing surface having coded indicia
Assignee: Individual
•
Filing: 1971-12-08
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Granted: 1973-12-04
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Expires: 1991-12-08
Abstract
Abstract A circular playing surface, specifically suitable for use in a circular chess game, consisting of sixty-four spaces of alternately light and dark color arranged in eight radial files and eight concentric ranks of eight spaces each, wherein discrete coded indicia are provided individually on the spaces to indicate spiral moves along series of diagonally adjacent spaces of like color. Such discrete coded indicia are letters and numbers, having like indicia for each spiral.
Inventors
- 👤 D Whitney
- 👤 F Capablanca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:02
CPC Classifications
A; A63; A63F; A63F3/00; A63F3/00173; A63F3/00176; Y; Y10; Y10S; Y10S273/00; Y10S273/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
A playing surface comprising 64 playing spaces alternately dark and light in color arranged in circular fashion into eight radial files and eight concentric ranks of eight spaces each and forming spirals, each spiral composed of a series of eight diagonally adjacent spaces of like color running from outermost to innermost rank each space including discrete symbols at each end, the symbols at one end having a common characteristic distinctive for each spiral extending in one direction, the symbols at the other end having a common characteristic distinctive for each spiral extending in the other direction.
Claim 2
Dependent Claim
96 words
A playing surface comprising 64 playing spaces alternately dark and light in color arranged in circular fashion into eight radial files and eight concentric ranks of eight spaces each and forming spirals, each spiral composed of a series of eight diagonally adjacent spaces of like color running from outermost to innermost rank each space including discrete symbols at each end, the symbols at one end having a common characteristic distinctive for each spiral extending in one direction, the symbols at the other end having a common characteristic distinctive for each spiral extending in the other direction.
Claim 3
Dependent Claim
22 words
The playing surface of claim 1, wherein said discrete symbols at the ends of the spaces consist of letters and numbers, respectively.
Claim 4
Dependent Claim
34 words
The playing surface of claim 1, wherein said surface is constructed of transparent material adapted to be placed upon a playing board having a like arrangement of spaces of identical dimensions without said symbols.
Claim 5
Dependent Claim
19 words
The playing surface of claim 1, wherein said playing surface is a board and said symbols are applied thereon.
References Cited (Backward Citations)
US3359003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |