US3866338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamically interacting toy blocks
Assignee: LOTUS GAMES Inc
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Filing: 1973-07-25
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Granted: 1975-02-18
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Expires: 1993-07-25
Abstract
Abstract A toy block of specially chosen dimensions, construction, shape, and weight so as to be ideally suited for stacking, balancing, and tumbling in such a way as to teach concepts of weight, counterweight, balance, friction, levers, inertia, and momentum. Additional concepts in the field of electronics may be taught through analogies drawn between the block constructions and various electronic components.
Inventors
- 👤 Nils Lou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:09
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
119 words
A dynamically active rectilinear toy block having first, second, and third pairs of faces, said faces being planar and substantially smooth over a substantial portion of their surfaces and the planar portions of each pair of faces comprising rectangular parallel surfaces, the first, second, and third orthogonal dimensions of the block having predetermined ratios with the first dimensions being about three times the second dimension and the third dimension being about twice the first dimension and in which both of the faces defined by said first and third dimensions include a plurality of holes of similar diameters therein which vary in depth and are deeper at one end of the block to make that end of the block lighter.
Claim 2
Dependent Claim
119 words
A dynamically active rectilinear toy block having first, second, and third pairs of faces, said faces being planar and substantially smooth over a substantial portion of their surfaces and the planar portions of each pair of faces comprising rectangular parallel surfaces, the first, second, and third orthogonal dimensions of the block having predetermined ratios with the first dimensions being about three times the second dimension and the third dimension being about twice the first dimension and in which both of the faces defined by said first and third dimensions include a plurality of holes of similar diameters therein which vary in depth and are deeper at one end of the block to make that end of the block lighter.
Claim 3
Dependent Claim
42 words
The block of claim 1 in which some of said holes at the lighter end of the block pass through the block to make that end of the block pass through the block to make that end of the block still lighter.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |