US3914878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double electronic block
Assignee: LU JUNG JENG
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Filing: 1973-10-09
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Granted: 1975-10-28
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Expires: 1993-10-09
Abstract
Abstract A double electronic block characterized by comprising two members of insulation which are joined into a cube by means of protrudent ends (105) at one member and relative recesses (106) at the other, having conducting elastic metal strips located therein and connected to the internal circuit elements and indicating on the top side of each member either the indication of circuit or an Arabic numeral so that any child aged from 5 to 12 who has the knowledge of numerals and symbols can build up circuits without need of soldering and help of tools and free from any danger.
Inventors
- 👤 Jung-Jeng Lu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:50
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/06; G09B23/18; G09B23/183; G09B23/185
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
260 words
A double electronic block to be placed in a special box, comprising: two hollow insulation members, each of said members having a top face, a bottom face, and four side faces, and containing the same electronic component; one of its members having on its top face a symbol of said electronic component and the other member having on its top face a numeral, whereby two kinds of representation of the same component are affected; one of said members having a protrusion on its bottom face and the other member having a recess on its bottom face adapted to mate with the protrusion on said one member, whereby said members can be joined together to form a cube; both of said members having an opening in each of its side faces and four openings in its top face, the openings in each side face being aligned with one of said openings in said top face; a plurality of elastic conductive metal strips, each strip having one end inserted through an opening in the top side of a block and the other end inserted through an aligned opening in a side face of the same block, thereby to connect with said component; the openings in said side faces serving as an insulation space so that, when said two members are joined together and pressure is put on them, their metal strips will not touch each other; so that a plurality of said joined cubes can be assembled into an electronic circuit with either the component symbol faces or the numeral faces uppermost.
Claim 2
Dependent Claim
260 words
A double electronic block to be placed in a special box, comprising: two hollow insulation members, each of said members having a top face, a bottom face, and four side faces, and containing the same electronic component; one of its members having on its top face a symbol of said electronic component and the other member having on its top face a numeral, whereby two kinds of representation of the same component are affected; one of said members having a protrusion on its bottom face and the other member having a recess on its bottom face adapted to mate with the protrusion on said one member, whereby said members can be joined together to form a cube; both of said members having an opening in each of its side faces and four openings in its top face, the openings in each side face being aligned with one of said openings in said top face; a plurality of elastic conductive metal strips, each strip having one end inserted through an opening in the top side of a block and the other end inserted through an aligned opening in a side face of the same block, thereby to connect with said component; the openings in said side faces serving as an insulation space so that, when said two members are joined together and pressure is put on them, their metal strips will not touch each other; so that a plurality of said joined cubes can be assembled into an electronic circuit with either the component symbol faces or the numeral faces uppermost.
Claim 3
Dependent Claim
59 words
The double electronic block of claim 1, in combination with said special box, said box comprising: a board with circular apertures, the area of each aperture being smaller than a top face of said double electronic block but through which the symbol or numeral on the top face may show and through which the block may be pushed out.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |