Patent US4028844A successfully refreshed from Google Patents.
US4028844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy building block for supplementing existing block sets
Assignee: Interlego AG
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Filing: 1976-05-17
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Granted: 1977-06-14
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Expires: 1996-05-17
Abstract
Abstract As a supplement to toy building sets, which include elements having at least one inclined face, there is provided a toy building element of a similar kind, but wherein the inclined face is disposed in such a manner relatively to the top and bottom faces of the element that the buildng set comprising the previously known blocks (B) having an inclined face, and the blocks according to the invention (A) can be used for building a structure wherein the two kinds of blocks are combined, so as to provide inclined surface which are disposed symmetrically with respect to a horizontal plane.
Inventors
- 👤 Erling Thue Dideriksen
- 👤 Jens Nygaard Knudsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:35
CPC Classifications
A; A63; A63H; A63H3/00; A63H3/16; A63H33/00; A63H33/04; A63H33/06; A63H33/08; A63H33/086
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
162 words
A toy building block having means for joining with other blocks of known design having complementary means, said block having a square face, a pair of opposing trapezoid end faces disposed at right angles to the bottom face, a rectangular side face disposed at right angles to the bottom face and the trapezoid end faces, a rectangular top face extending parallel to the bottom face, an inclined face extending from the top face towards the bottom face intermediate the trapezoid end faces, said joining means including four projections extending normally from said bottom face and disposed symmetrically with respect to the center of said square, a rectangular recess in the top face and a projection within said recess extending co-axially with the centre of said recess, the width of said projection being equal to the spacing between the projections in the bottom face and the width of the latter projections being equal to the width of the recess in the top face.
Claim 2
Dependent Claim
162 words
A toy building block having means for joining with other blocks of known design having complementary means, said block having a square face, a pair of opposing trapezoid end faces disposed at right angles to the bottom face, a rectangular side face disposed at right angles to the bottom face and the trapezoid end faces, a rectangular top face extending parallel to the bottom face, an inclined face extending from the top face towards the bottom face intermediate the trapezoid end faces, said joining means including four projections extending normally from said bottom face and disposed symmetrically with respect to the center of said square, a rectangular recess in the top face and a projection within said recess extending co-axially with the centre of said recess, the width of said projection being equal to the spacing between the projections in the bottom face and the width of the latter projections being equal to the width of the recess in the top face.
Claim 3
Dependent Claim
52 words
A toy building block as claimed in claim 1, said joining means further comprising a substantially rectangular recess in the bottom face, a pair of the projections of the bottom face remote from the topface and closest to the inclined face being disposed in a pair of corners of said bottom recess.
References Cited (Backward Citations)
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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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |