Patent US3949994A successfully refreshed from Google Patents.
US3949994A
Expired / Lapsed
US
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Three dimensional interlocking puzzles
Assignee: Individual
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Filing: 1975-04-11
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Granted: 1976-04-13
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Expires: 1995-04-11
Abstract
Abstract A puzzle is described in the form of a three dimensional body, the exterior of which is preferably a cube and composed of eight elements, having their exterior surfaces forming the body, such as a cube, the constituent parts of which do not form the exterior appear to be readily separable, the elements being in pairs diagonally and slidably separable, the pairs when in extended positions permitting complete disassembly, assembly being achieved by a reversal of the disassembly.
Inventors
- 👤 Raymond L. Knarr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:53
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/12; A63F9/1208; A63F2009/1228
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A puzzle comprising a body of three dimensions with diagonally related surface portions, said surface portions being constituted by a plurality of elements, said portions being arrayed relative to each other so as to form two vertically arrayed tiers thereof, pairs of said elements each comprising a discrete unit having a slidable connection therebetween for movement of elements in each pair away from each other to enable disassembly of the units and toward each other, one of the elements of each pair being disposed in a first tier and the other element of each pair being disposed in another tier, and said slidable connections extending generally parallel to the body diagonals of said body.
Claim 2
Dependent Claim
114 words
A puzzle comprising a body of three dimensions with diagonally related surface portions, said surface portions being constituted by a plurality of elements, said portions being arrayed relative to each other so as to form two vertically arrayed tiers thereof, pairs of said elements each comprising a discrete unit having a slidable connection therebetween for movement of elements in each pair away from each other to enable disassembly of the units and toward each other, one of the elements of each pair being disposed in a first tier and the other element of each pair being disposed in another tier, and said slidable connections extending generally parallel to the body diagonals of said body.
Claim 3
Dependent Claim
22 words
A puzzle as defined in claim 1 in which the exterior surfaces of each element comprise exterior surface portions of a cube.
Claim 4
Dependent Claim
18 words
A puzzle as defined in claim 1 in which said body is composed of four of said units.
Claim 5
Dependent Claim
26 words
A puzzle as defined in claim 1 in which each of said elements has a notch in engagement with the slidable connection of a contiguous element.
Claim 6
Dependent Claim
28 words
A puzzle as defined in claim 1 in which each of said elements has a notch with its faces in engagement with the faces of a contiguous element.
Claim 7
Dependent Claim
28 words
A puzzle as defined in claim 5 in which each of said notches comprises a surface portion of said element and a face portion of its slidable connection.
Claim 8
Dependent Claim
30 words
A puzzle as defined in claim 1 in which said slidable connections each include a slide bar and members for limiting the separation of said elements on said slide bar.
Claim 9
Dependent Claim
47 words
A puzzle as defined in claim 1 in which said slidable connections each include a slide bar and said bar and said elements have portions permitting sliding movement of said elements on said bar while preventing relative turning movement of said elements with respect to said bar.
Claim 10
Dependent Claim
26 words
A puzzle as defined in claim 1 in which each of said slidable connections is angularly disposed with respect to contiguous slidable connections of other units.
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) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |