US4332387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Puzzle comprising blocks with rabbeted ends
Assignee: Individual
•
Filing: 1981-03-16
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Granted: 1982-06-01
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Expires: 2001-03-16
Abstract
Abstract A puzzle includes a plurality of elongated blocks (22-37) of square cross section. Each block has a first end (22a-37a) rabbeted along one of the diagonals of the square cross section to form two turning treads separated by a riser and a second end (22b-37b) opposite the first end rabbeted to form two straight treads separated by a riser. A base container (38) having a bottom (40) and walls (42) extending therefrom receives the blocks therein with either the first or second end of each block engaging the bottom of the base container. The opposite end of each block is positioned upwardly to form a desired configuration of the blocks extending from the base container.
Inventors
- 👤 John W. Mullen, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:24
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
58 words
A puzzle comprising: a plurality of elongated blocks, each having a rectangular cross section and a first end rabbeted along a diagonal to form two turning treads separated by a riser and a second end rabbeted to form two straight treads separated by a riser, said blocks being arrangeable in a side-by-side relation to define a desired configuration.
Claim 2
Dependent Claim
58 words
A puzzle comprising: a plurality of elongated blocks, each having a rectangular cross section and a first end rabbeted along a diagonal to form two turning treads separated by a riser and a second end rabbeted to form two straight treads separated by a riser, said blocks being arrangeable in a side-by-side relation to define a desired configuration.
Claim 3
Dependent Claim
14 words
The puzzle according to claim 1 wherein said blocks have a square cross section.
Claim 4
Dependent Claim
16 words
The puzzle according to claim 1 wherein said blocks vary in length one from the other.
Claim 5
Dependent Claim
28 words
The puzzle according to claim 1 wherein the dimension of the riser between the two treads on each end of each said block is equal for each block.
Claim 6
Dependent Claim
44 words
The puzzle according to claim 1 further comprising a base container for receiving the blocks therein having a bottom and sidewalls extending upwardly therefrom to facilitate confining said blocks with one end of each said block engaged against the bottom of said base container.
Claim 7
Dependent Claim
21 words
The puzzle according to claim 1 wherein each block differs in length from the next shorter block by an equal increment.
Claim 8
Dependent Claim
35 words
The puzzle according to claim 6 wherein said incremental difference between the lengths of said blocks is equal to twice the dimension of the riser between the treads formed on each end of said block.
Claim 9
Dependent Claim
113 words
A puzzle comprising: a plurality of elongated blocks of rectangular cross section, each having a first end rabbeted along one of the diagonals of the rectangular cross section to form two turning treads separated by a riser thereon and a second end opposite the first end rabbeted to form two straight treads separated by a riser; and a base container having a bottom and sidewalls extending therefrom for receiving said blocks therein with either the first or second end of each block engaging the bottom of said base container thereby exposing either the first or second end of each block to form a desired configuration of said blocks extending from said base container.
Claim 10
Dependent Claim
113 words
A puzzle comprising: a plurality of elongated blocks of rectangular cross section, each having a first end rabbeted along one of the diagonals of the rectangular cross section to form two turning treads separated by a riser thereon and a second end opposite the first end rabbeted to form two straight treads separated by a riser; and a base container having a bottom and sidewalls extending therefrom for receiving said blocks therein with either the first or second end of each block engaging the bottom of said base container thereby exposing either the first or second end of each block to form a desired configuration of said blocks extending from said base container.
Claim 11
Dependent Claim
27 words
The puzzle according to claim 8 wherein said base container has a bottom substantially equal in area to the sum of the cross-sectional area of said blocks.
Claim 12
Dependent Claim
15 words
The puzzle according to claim 8 wherein the bottom of said base container is rectangular.
Claim 13
Dependent Claim
15 words
The puzzle according to claim 8 wherein the bottom of said base container is square.
Claim 14
Dependent Claim
14 words
The puzzle according to claim 8 wherein said blocks have a square cross section.
Claim 15
Dependent Claim
19 words
The puzzle according to claim 8 wherein each block differs from the next shorter block by an equal increment.
Claim 16
Dependent Claim
66 words
The puzzle according to claim 13 wherein the dimension of the riser between the treads formed on each end of each said block is equal one to the other and equal for each said block and wherein said dimensional variation between the lengths of the blocks is equal to twice the dimension of the riser between the treads formed on each end of each said blocks.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |