Patent US3854237A successfully refreshed from Google Patents.
US3854237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy building block
Assignee: Individual
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Filing: 1972-11-03
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Granted: 1974-12-17
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Expires: 1992-11-03
Abstract
Abstract Each block of a set of blocks is formed as a cube with an integrally connected half cube section, so that, two blocks can be nested together to form a rectangle. Each block may be hollow and provided with a dowel receiving aperture in each plane surface. Short dowels or pins may be lodged in adjacent apertures to removably fasten adjacent blocks together.
Inventors
- 👤 R Loth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:59
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/10; A63H33/108
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
201 words
A set of blocks, each block of which comprises a geometric figure having eight sides, a back side square in shape and having an area with a selected unit of measure, a top side square in shape and at right angles to said back side and having an area equal to the area of said back side, a bottom opposite and parallel to said top side and at right angles to said back side, rectangular in shape and equal to twice the area of said top side, a platform face, square in shape and equal in area to said top side, parallel and opposite to said bottom, an end wall opposite and parallel to said back side and located at right angles to said top side and platform face, said end wall being rectangular in shape and having an area approximately two-thirds of the area of said back side, to provide a recess area in said block, a front wall parallel to said back side and end wall and at right angles to both said platform face and bottom, a left side perpendicular to both said top side and bottom and a right side opposite and parallel to said left side.
Claim 2
Dependent Claim
201 words
A set of blocks, each block of which comprises a geometric figure having eight sides, a back side square in shape and having an area with a selected unit of measure, a top side square in shape and at right angles to said back side and having an area equal to the area of said back side, a bottom opposite and parallel to said top side and at right angles to said back side, rectangular in shape and equal to twice the area of said top side, a platform face, square in shape and equal in area to said top side, parallel and opposite to said bottom, an end wall opposite and parallel to said back side and located at right angles to said top side and platform face, said end wall being rectangular in shape and having an area approximately two-thirds of the area of said back side, to provide a recess area in said block, a front wall parallel to said back side and end wall and at right angles to both said platform face and bottom, a left side perpendicular to both said top side and bottom and a right side opposite and parallel to said left side.
Claim 3
Dependent Claim
21 words
The structure of claim 1 wherein a plurality of apperatures are provided, at least one in each of the eight sides.
Claim 4
Dependent Claim
12 words
The structure of claim 1 wherein said toy building block is hollow.
Claim 5
Dependent Claim
56 words
A set of blocks, each block of which comprises the structure of claim 2, wherein a set of blocks form elements of a modular unit wherein said blocks nest together, dowel pins aligned and insertable in adjacent apertures of parallel blocks to removably secure said blocks together, whereby a multiplicity of different patterns can be formed.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |