US4060247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Geometric puzzle
Assignee: Individual
•
Filing: 1976-06-28
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Granted: 1977-11-29
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Expires: 1996-06-28
Abstract
Abstract A five-piece geometric puzzle is disclosed. This geometric puzzle uses three basic shapes which can be arranged either as a two dimensional rhomboid or a three dimensional tetrahedron. The puzzle set is constituted by two pieces each comprising six connected balls in a planar rhomboid array, two pieces each comprising two connected balls, and one piece comprising four connected balls in planar linear array. Multiple sets of the pieces may be provided.
Inventors
- 👤 Robert E. Kobres, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:38
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/12; A63F9/1288; A63F2009/1292
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
60 words
A geometric puzzle comprising two pieces having six connected balls in a planar array as shown in FIG. 1, two pieces having two connected balls as shown in FIG. 2, and one piece having four connected balls in planar array as shown in FIG. 3, said pieces being assemblable into either a two dimensional rhomboid or a three dimensional tetrahedron.
Claim 2
Dependent Claim
60 words
A geometric puzzle comprising two pieces having six connected balls in a planar array as shown in FIG. 1, two pieces having two connected balls as shown in FIG. 2, and one piece having four connected balls in planar array as shown in FIG. 3, said pieces being assemblable into either a two dimensional rhomboid or a three dimensional tetrahedron.
Claim 3
Dependent Claim
24 words
A geometric puzzle as defined in claim 1 further comprising multiple sets of said pieces which may be assembled into larger rhomboids and tetrahedrons.
References Cited (Backward Citations)
US3837652A
Cited
US3945645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |