US3829101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Puzzle assembly with intersecting pieces
Assignee: Individual
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Filing: 1973-06-20
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Granted: 1974-08-13
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Expires: 1993-06-20
Abstract
Abstract A puzzle formed from a block including several variously configured, interlocking unitary pieces which are slideable into and out of the block for assembly and disassembly. The pieces assemble into two intersecting cylinders within the block including a central piece which forms a part of both cylinders. The preferred method of forming the puzzle comprises cutting the cylinders by causing the instrument used for cutting to enter and exit the block along a single line for each cylinder.
Inventors
- 👤 L Betzoldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:19
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/12; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0491
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
176 words
A puzzle comprising an element having at least two sets of external surfaces; each of said sets including two generally opposing surfaces on generally opposing sides of said element; said element having a plurality of separate pieces slideably received therein; said pieces being variously configured and comprising portions of at least two intersecting cylinders in said element; each of said cylinders extending between a different set of said two sets of two generally opposing surfaces of said element and slidably received in a correspondingly shaped aperture formed within and extending between said opposing surfaces of one of said respective sets; said cylinders having cross sectional areas of the same size and shape when taken along planes perpendicular to the side surfaces of said cylinders and intersecting such that at least one of said pieces forms a portion of both of said cylinders; said one piece being received completely internally of said element and defining two areas having the same size and shape when said one piece is viewed along the longitudinal axes of said two cylinders.
Claim 2
Dependent Claim
176 words
A puzzle comprising an element having at least two sets of external surfaces; each of said sets including two generally opposing surfaces on generally opposing sides of said element; said element having a plurality of separate pieces slideably received therein; said pieces being variously configured and comprising portions of at least two intersecting cylinders in said element; each of said cylinders extending between a different set of said two sets of two generally opposing surfaces of said element and slidably received in a correspondingly shaped aperture formed within and extending between said opposing surfaces of one of said respective sets; said cylinders having cross sectional areas of the same size and shape when taken along planes perpendicular to the side surfaces of said cylinders and intersecting such that at least one of said pieces forms a portion of both of said cylinders; said one piece being received completely internally of said element and defining two areas having the same size and shape when said one piece is viewed along the longitudinal axes of said two cylinders.
Claim 3
Dependent Claim
24 words
The puzzle of claim 1 wherein said element is a cube; the planes including said sets of opposing surfaces being perpendicular to one another.
Claim 4
Dependent Claim
11 words
The puzzle of claim 1 wherein said cylinders are right cylinders.
Claim 5
Dependent Claim
25 words
The puzzle of claim 3 wherein said right cylinders each have a cross-sectional shape comprising an involute; said cylinders including seven of said separate pieces.
Claim 6
Dependent Claim
29 words
The puzzle of claim 1 wherein said respective cylinders each have a cross-sectional shape of an involute when taken parallel to at least one of said respective opposing surfaces.
Claim 7
Dependent Claim
34 words
The puzzle of claim 1 wherein the portion of said element remaining after said pieces are removed comprises a unitary, remaining section; said pieces all interlockingly engaging said remaining section when slideably received therein.
Claim 8
Dependent Claim
23 words
The puzzle of claim 1 wherein said element is a solid block; said separate pieces each being solid and cut from said block.
Claim 9
Dependent Claim
36 words
The puzzle of claim 1 wherein said respective cylinders each have side surfaces and a cross-sectional shape of an involute when taken along a plane which is perpendicular to the side surfaces of the respective cylinder.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |