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US3672110A Expired / Lapsed US ⏱️ 0.0 years remaining

Building block

Assignee: Individual
•
Filing: 1971-01-28
•
Granted: 1972-06-27
•
Expires: 1991-01-28
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Abstract

Abstract A building block for erection of interior and exterior walls, partitions and like structures. The building block is shaped in such a way that by combining it in various ways it makes possible to obtain walls providing simultaneously building-technical advantages and aesthetical effects. The basic shape of the building block is, in the preferred embodiment, that of a cube from which four corner pieces have been cut away such that four triangular faces are formed in the cubic body. These triangular faces extend essentially in parallel with two opposite side faces of the cube, and have two of its sides contiguous to two of the remaining, non-opposite walls of the cube. The sides of the cutaway triangles opposite the apex define a rectangular face extending in pairs in parallel relationship with one diagonal line, and also in pairs in parallel relationship with the other diagonal line of the side opposite faces of the cube, one diagonal line crossing the other diagonal line preferably at right angles.

Inventors

  • 👤 Per Christer Nordstrom

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 19:45
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/28; E04B2/36

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 133 words
A building block consisting of an essentially parallelepipedal body, characterized by four corner notches, being formed in said body and arranged in pairs, at least each pair of notches being of uniform configuration, each one of said notches defining in said body one triangular face being essentially parallel with two opposite side faces of said body and contiguous to two other, non-opposite side faces of said body, and also defining one rectangular face extending from said first-mentioned opposite side faces, said corner notch rectangular faces extending in pairs parallel with and on either side of, respectively a first diagonal plane extending along one diagonal line of the first-mentioned opposite side faces of the body, and a second diagonal plane extending along the other diagonal line of said opposite side faces of the body.
Claim 2
Dependent Claim 133 words
A building block consisting of an essentially parallelepipedal body, characterized by four corner notches, being formed in said body and arranged in pairs, at least each pair of notches being of uniform configuration, each one of said notches defining in said body one triangular face being essentially parallel with two opposite side faces of said body and contiguous to two other, non-opposite side faces of said body, and also defining one rectangular face extending from said first-mentioned opposite side faces, said corner notch rectangular faces extending in pairs parallel with and on either side of, respectively a first diagonal plane extending along one diagonal line of the first-mentioned opposite side faces of the body, and a second diagonal plane extending along the other diagonal line of said opposite side faces of the body.
Claim 3
Dependent Claim 13 words
A building block according to claim 1, wherein said body has cubic configuration.
Claim 4
Dependent Claim 29 words
A building block according to claim 1, wherein said body has cubic configuration and said rectangular faces extend at a mutually equal distance away from their associated diagonal plane.
Claim 5
Dependent Claim 39 words
A building block according to claim 1, wherein said body has cubic configuration and said rectangular faces extend at a mutually equal distance away from their associated diagonal plane, at least each pair of said corner notches being congruent.
Claim 6
Dependent Claim 24 words
A building block according to claim 1, wherein the height of each notch is a third of the total height of the parallelepipedal body.

References Cited (Backward Citations)

US452412A Cited
US1336789A Cited
US1812711A Cited
US2957278A Cited
GB995309A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-06-27 1975-12-27 1976-06-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-06-27 1979-12-27 1980-06-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-06-27 1983-12-27 1984-06-27 $7700.00 Window Closed / Lapsed

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