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US4422641A
Expired / Lapsed
US
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Shiftable block puzzle
Assignee: Individual
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Filing: 1982-03-18
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Granted: 1983-12-27
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Expires: 2002-03-18
Abstract
Abstract A shiftable block puzzle comprising a board defining a bottom wall having a flat top surface. A plurality of blocks of different sizes are confined for lateral movement on the flat surface. A restricted area is defined on the flat top surface for reception thereon of a single primary one of the blocks after shifting movements of secondary ones of the blocks to make way for displacement of the primary block from a predetermined starting position. The primary block is adapted to permit same to be displaced onto said restricted area.
Inventors
- 👤 Pierre R. Collin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:45
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/08; A63F9/0803; A63F9/0807; A63F3/00; A63F3/00697; A63F2003/00845; A63F2003/00848; A63F3/00173; A63F3/00574; A63F3/00634
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
156 words
A shiftable block puzzle comprising a board defining a bottom wall having a flat top surface, a plurality of blocks of different sizes confined for lateral movement on said flat surface, and a restricted area on said flat top surface for reception thereon of a single primary one of said blocks after shifting movements of secondary ones of said blocks to make way for displacement of said primary block from a predetermined starting position, said primary block having means to permit same to be displaced onto said restricted area, said restricted area provided with a protruding element extending above said flat bottom wall and located to prevent said secondary blocks to enter said restricted area, said means to permit said primary block to be displaced into said restricted area being a slot in a lower surface thereof for reception therein of said protruding element to permit said primary block to be shifted into said restricted area.
Claim 2
Dependent Claim
156 words
A shiftable block puzzle comprising a board defining a bottom wall having a flat top surface, a plurality of blocks of different sizes confined for lateral movement on said flat surface, and a restricted area on said flat top surface for reception thereon of a single primary one of said blocks after shifting movements of secondary ones of said blocks to make way for displacement of said primary block from a predetermined starting position, said primary block having means to permit same to be displaced onto said restricted area, said restricted area provided with a protruding element extending above said flat bottom wall and located to prevent said secondary blocks to enter said restricted area, said means to permit said primary block to be displaced into said restricted area being a slot in a lower surface thereof for reception therein of said protruding element to permit said primary block to be shifted into said restricted area.
Claim 3
Dependent Claim
22 words
A shiftable block puzzle as claimed in claim 1 wherein said primary one of said blocks is larger than said secondary blocks.
Claim 4
Dependent Claim
17 words
A shiftable block puzzle as claimed in claim 2 wherein said blocks are of flat rectangular shape.
Claim 5
Dependent Claim
30 words
A shiftable block puzzle as claimed in claim 3 wherein said primary one of said blocks is of square contour, said secondary blocks being of smaller rectangular and square contour.
Claim 6
Dependent Claim
58 words
A shiftable block puzzle as claimed in claim 4 wherein there are nine secondary blocks, five of said secondary blocks having a rectangular contour and each being half the size of said square contoured primary block, and four of said secondary blocks being of square contour and each being half the size of said rectangular contoured secondary blocks.
Claim 7
Dependent Claim
42 words
A shiftable block puzzle as claimed in claim 3 wherein said blocks are provided with attachment means whereby they are shiftably attached to said flat bottom wall and movable along transverse axes, said attachment means confining said blocks over said bottom wall.
Claim 8
Dependent Claim
65 words
A shiftable block puzzle as claimed in claim 6 wherein said attachment means is a transverse slot across a lower surface of each said blocks and a plurality of attachment posts protruding over said flat bottom wall equidistantly spaced along said transverse axes, said posts having a retention head receivable in a like retention groove at a bottom end of said slot of said blocks.
Claim 9
Dependent Claim
51 words
A shiftable block puzzle as claimed in claim 7 wherein said attachment means is constituted by a plurality of transverse slots disposed in said flat bottom wall, said slots having retention grooves therein, and said blocks having an attachment post in a lower face thereof for sliding engagement in said slots.
Claim 10
Dependent Claim
22 words
A shiftable block puzzle as claimed in claim 3 wherein said board is of rectangular shape and further comprises peripheral side walls.
Claim 11
Dependent Claim
24 words
A shiftable block puzzle as claimed in claim 9 wherein a cover is removably secured over said blocks and engaged by said side walls.
Claim 12
Dependent Claim
75 words
A shiftable block puzzle as claimed in claim 1 wherein a block shifting area is defined adjacent said restricted area, said primary block being positionable to a starting position which is forwardmost of said restricted area with said secondary blocks being positioned to each side of said primary block and intermediate said primary block and said restricted area, and a free area over said block shifting area to permit said shifting movement of said blocks.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |