US5048250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building block
Assignee: Individual
•
Filing: 1990-04-02
•
Granted: 1991-09-17
•
Expires: 2010-04-02
Abstract
Abstract A relatively simple, inexpensive building block for use in self-supporting walls includes a rectangular parallelepipedic body formed of a mixture of three parts by weight cement to two parts by weight wood fiber. Vertically extending grooves and in some cases cylindrical holes are provided in the blocks for defining vertical passages extending the height of the wall for receiving reinforcing rods and/or concrete for strengthening the wall.
Inventors
- 👤 Anthony J. P. Elias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:37
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/42; E04B2/54; E04C; E04C1/00; E04C1/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
A building block for use in a self-supporting wall comprising substantially rectangular parallelepipedic body means, said body means including a mixture of three parts by weight cement and two parts by weight wood fiber; and vertically extending, semicylindrical groove means in at least one end of said body means for forming a cylindrical concrete receiving passage with opposed corresponding groove means in a horizontally aligned similar block, whereby a plurality of blocks can be used to form a wall reinforced by concrete columns filling aligned vertical passages in the blocks.
Claim 2
Dependent Claim
90 words
A building block for use in a self-supporting wall comprising substantially rectangular parallelepipedic body means, said body means including a mixture of three parts by weight cement and two parts by weight wood fiber; and vertically extending, semicylindrical groove means in at least one end of said body means for forming a cylindrical concrete receiving passage with opposed corresponding groove means in a horizontally aligned similar block, whereby a plurality of blocks can be used to form a wall reinforced by concrete columns filling aligned vertical passages in the blocks.
Claim 3
Dependent Claim
20 words
A building block according to claim 1, wherein said body means includes vertically extending groove means in each end thereof.
Claim 4
Dependent Claim
30 words
A building block according to claim 1, wherein said body means includes vertically extending groove means in one end thereof, and a vertically extending hole proximate the other end thereof.
Claim 5
Dependent Claim
38 words
A building block according to claim 1, 2 or 3, including cavity means in one side of said body means inside said groove means, whereby concrete entering said groove means fills said cavity means to strengthen said columns.
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) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |