US4288960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking building block
Assignee: Individual
•
Filing: 1977-08-01
•
Granted: 1981-09-15
•
Expires: 1997-08-01
Abstract
Abstract A rectangular building block with surface indentations corresponding to a geometrical arrangement of rhombic dodecahedral elements. The indentations are designed to interlock closely with those of the adjoining blocks in order to provide a mortarless bond.
Inventors
- 👤 Olivier W. Auras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:51
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/02; E02D29/025; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/14; E04; E04B; E04B2/00; E04B2/02; E04B2/04; E04B2/12; E04B5/00; E04B5/02; E04B5/08; Y; Y10; Y10S; Y10S52/00; Y10S52/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
A building block having the general shape of a six sided rectangular solid and an outline corresponding to the agglutination of a plurality of interlocked identical elements each having the form of a symmetrical rhombic dodecahedron wherein each said rhombic dodecahedron is positioned so that two of its diagonally opposite vertices are in an axis parallel to a first edge of said rectangular solid and each of the faces parallel to said axis is in a plane forming a forty-five degree angle with the other edges of said rectangular solid which are perpendicular to said first edge.
Claim 2
Dependent Claim
97 words
A building block having the general shape of a six sided rectangular solid and an outline corresponding to the agglutination of a plurality of interlocked identical elements each having the form of a symmetrical rhombic dodecahedron wherein each said rhombic dodecahedron is positioned so that two of its diagonally opposite vertices are in an axis parallel to a first edge of said rectangular solid and each of the faces parallel to said axis is in a plane forming a forty-five degree angle with the other edges of said rectangular solid which are perpendicular to said first edge.
Claim 3
Dependent Claim
46 words
The building block claimed in 1 wherein the length, width, and depth dimensions of said rectangular solid are of different sizes and wherein the second largest dimension is a multiple of the smallest dimension and the largest dimension is a multiple of the second largest dimension.
Claim 4
Dependent Claim
26 words
The building block claimed in 2 wherein said agglutination comprises one hundred eight elements positioned in three interlocking strata each comprising six interlocking rows of elements.
Claim 5
Dependent Claim
18 words
The building block claimed in 3 having at least a transversal hole in the center of a face.
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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) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |