Patent US3690031A successfully refreshed from Google Patents.
US3690031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy construction block set
Assignee: Tomy Kogyo Co Ltd
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Filing: 1970-08-17
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Granted: 1972-09-12
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Expires: 1990-08-17
Abstract
Abstract A toy construction block set comprising a number of blocks and characterized in that all the blocks have the same configuration and dimensions and that a wide variety of toy assemblies may be assembled with the blocks. Each of the blocks is a hexahedron of a generally triangular configuration in side view and is adapted to be assembled with each other in wall-to-wall relationship.
Inventors
- 👤 Yoshie Shinoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:21
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H18/00; A63H18/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
175 words
A toy construction set comprising a plurality of construction blocks each having an identical configuration and identical dimensions, said blocks each being a hexahedron having a square front face, a rectangular rear face, each of said front and rear faces having a generally centrally located hole defined therethrough, rectangular upper and bottom faces, said upper face extending from said front to said rear face and being formed as a continuous smooth curved surface which is generally convex for approximately half its length and generally concave for approximately the other half of its length, generally rightangled triangular side faces, longitudinally extending guide grooves adapted to serve as tracks for a toy vehicle formed in each of said upper, bottom and side faces, and curved guide grooves adapted to serve as tracks for a toy vehicle formed in each of said side faces, said curved guide grooves inTersecting said longitudinal guide grooves of said side faces, respectively, whereby said identically configured blocks may be assembled together in a variety of arrangements to form various fanciful toy shapes.
Claim 2
Dependent Claim
175 words
A toy construction set comprising a plurality of construction blocks each having an identical configuration and identical dimensions, said blocks each being a hexahedron having a square front face, a rectangular rear face, each of said front and rear faces having a generally centrally located hole defined therethrough, rectangular upper and bottom faces, said upper face extending from said front to said rear face and being formed as a continuous smooth curved surface which is generally convex for approximately half its length and generally concave for approximately the other half of its length, generally rightangled triangular side faces, longitudinally extending guide grooves adapted to serve as tracks for a toy vehicle formed in each of said upper, bottom and side faces, and curved guide grooves adapted to serve as tracks for a toy vehicle formed in each of said side faces, said curved guide grooves inTersecting said longitudinal guide grooves of said side faces, respectively, whereby said identically configured blocks may be assembled together in a variety of arrangements to form various fanciful toy shapes.
Claim 3
Dependent Claim
56 words
A block set, according to claim 1, including connector means for securing said blocks together in wall-to-wall relationship, said connector means having a cylindrical portion adapted for insertion into each of the holes of said blocks, said connector means being formed of a resilient material so as to be resiliently insertable into each of said holes.
Claim 4
Dependent Claim
64 words
A block set, according to claim 1, including a toy vehicle, wherein said toy vehicle is arranged to be driven by a self-contained power means and has guide means for guiding said vehicle, said guide means being attached to the underside of said vehicle at a portion adjacent the front end thereof and adapted to be slideably engaged within any of said guide grooves.
Claim 5
Dependent Claim
54 words
A block set according to claim 1, wherein each of said blocks is dimensioned with said rear face having an area which is twice as large as the area of said front face and with said bottom face having an area which is three times as large as the area of said front face.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |