Patent US5601470A successfully refreshed from Google Patents.
US5601470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy building block puzzle
Assignee: Individual
•
Filing: 1996-01-02
•
Granted: 1997-02-11
•
Expires: 2016-01-02
Abstract
Abstract A toy building block puzzle comprises a plurality of at least five differently shaped building blocks. Each block has a peripheral side wall which may include a plurality of lugs and recesses. The lugs and recesses are shaped and sized to interlock two or more blocks together in a horizontal plane by which puzzles of geometric and alphabetic configurations may be formed.
Inventors
- 👤 Li-Ho Yao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:09
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/10; A63F9/0098
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
240 words
A toy construction block puzzle comprising: a plurality of at least three different shaped and interconnectible toy building elements, each toy building element comprising a hollow block having a closed upper end, an open lower end, and a peripheral side wall interconnecting the lower and upper ends, with at least one recess defined in the peripheral side wall, at least one lug, extending outwardly from the peripheral side wall, the lug and recess being dimensioned and shaped to press fit together thereby interlocking a plurality of blocks together in a horizontal plane; the peripheral side walls of a first of said elements being shaped as a square with a pair of lugs extending outwardly from a respective mediate point of each of two first opposing straight sides and a pair of recesses, each recess defined in a respective mediate point of each of two second opposing straight sides; the peripheral side walls of a second of said elements being shaped as an isosceles triangle with one lug extending from a mediate portion of one straight side and a recess defined in a respective mediate portion of each of the two remaining straight sides; and the peripheral side walls of a third of said elements being shaped as a truncated sector of a circle, having a first straight edge, a second and third straight edges which oppose each other and are non-parallel, and an arcuate edge opposing the first straight edge.
Claim 2
Dependent Claim
240 words
A toy construction block puzzle comprising: a plurality of at least three different shaped and interconnectible toy building elements, each toy building element comprising a hollow block having a closed upper end, an open lower end, and a peripheral side wall interconnecting the lower and upper ends, with at least one recess defined in the peripheral side wall, at least one lug, extending outwardly from the peripheral side wall, the lug and recess being dimensioned and shaped to press fit together thereby interlocking a plurality of blocks together in a horizontal plane; the peripheral side walls of a first of said elements being shaped as a square with a pair of lugs extending outwardly from a respective mediate point of each of two first opposing straight sides and a pair of recesses, each recess defined in a respective mediate point of each of two second opposing straight sides; the peripheral side walls of a second of said elements being shaped as an isosceles triangle with one lug extending from a mediate portion of one straight side and a recess defined in a respective mediate portion of each of the two remaining straight sides; and the peripheral side walls of a third of said elements being shaped as a truncated sector of a circle, having a first straight edge, a second and third straight edges which oppose each other and are non-parallel, and an arcuate edge opposing the first straight edge.
Claim 3
Dependent Claim
156 words
A toy construction block puzzle comprising: a plurality of toy building elements, each toy building element comprising a hollow block having a closed upper end, an open lower end, and a peripheral side wall interconnecting the lower and upper ends, with at least one recess defined in the peripheral side wall, at least one lug, extending outwardly from the peripheral side wall, the lug and recess being dimensioned and shaped to press fit together thereby interlocking a plurality of blocks together in a horizontal plane; the peripheral side wall of at least one of said elements being shaped as a truncated sector of a circle, thereby defining a first straight edge, a second and third straight edges which oppose each other and are non-parallel, and an arcuate edge opposing the first straight edge, wherein the first, second and third straight edges and the arcuate edge each have a recess defined in a respective mediate point thereof.
Claim 4
Dependent Claim
156 words
A toy construction block puzzle comprising: a plurality of toy building elements, each toy building element comprising a hollow block having a closed upper end, an open lower end, and a peripheral side wall interconnecting the lower and upper ends, with at least one recess defined in the peripheral side wall, at least one lug, extending outwardly from the peripheral side wall, the lug and recess being dimensioned and shaped to press fit together thereby interlocking a plurality of blocks together in a horizontal plane; the peripheral side wall of at least one of said elements being shaped as a truncated sector of a circle, thereby defining a first straight edge, a second and third straight edges which oppose each other and are non-parallel, and an arcuate edge opposing the first straight edge, wherein the first, second and third straight edges and the arcuate edge each have a recess defined in a respective mediate point thereof.
Claim 5
Dependent Claim
172 words
A toy construction block puzzle comprising: a plurality of toy building elements, each toy building element comprising a hollow block having a closed upper end, an open lower end, and a peripheral side wall interconnecting the lower and upper ends, with at least one recess defined in the peripheral side wall, at least one lug, extending outwardly from the peripheral side wall, the lug and recess being dimensioned and shaped to press fit together thereby interlocking a plurality of blocks together in a horizontal plane; the peripheral side wall of at least one of said elements being shaped as a truncated sector of a circle, thereby defining a first straight edge, a second and third straight edges which oppose each other and are non-parallel and an arcuate edge opposing the first straight edge, wherein the second and third straight edges each have a lug extending outwardly from a respective mediate point thereof and the first straight edge and the arcuate edge each have a recess defined in a respective mediate point thereof.
Claim 6
Dependent Claim
172 words
A toy construction block puzzle comprising: a plurality of toy building elements, each toy building element comprising a hollow block having a closed upper end, an open lower end, and a peripheral side wall interconnecting the lower and upper ends, with at least one recess defined in the peripheral side wall, at least one lug, extending outwardly from the peripheral side wall, the lug and recess being dimensioned and shaped to press fit together thereby interlocking a plurality of blocks together in a horizontal plane; the peripheral side wall of at least one of said elements being shaped as a truncated sector of a circle, thereby defining a first straight edge, a second and third straight edges which oppose each other and are non-parallel and an arcuate edge opposing the first straight edge, wherein the second and third straight edges each have a lug extending outwardly from a respective mediate point thereof and the first straight edge and the arcuate edge each have a recess defined in a respective mediate point thereof.
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) | 2000-02-11 | 2000-08-12 | 2001-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-11 | 2004-08-12 | 2005-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-11 | 2008-08-12 | 2009-02-11 | $7700.00 | Window Closed / Lapsed |