Patent US5145288A successfully refreshed from Google Patents.
US5145288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mortarless retaining wall
Assignee: Individual
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Filing: 1990-09-13
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Granted: 1992-09-08
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Expires: 2010-09-13
Abstract
Abstract The invention provides a simple, economical and effective means of constructing a retaining wall from conventional concrete building blocks. A sheet member is provided, having protrusions which locate in the hollow core portions of the blocks to couple the blocks together. Where a tie-back is desired, the sheet member has an anchoring portion which extends back into the backfill to anchor the wall thereto. In one embodiment, the sheet member is plastic or other non-corrosive substance, with a matrix of dome-like protrusions. In another embodiment, the sheet member can be of a mesh-like construction. In another embodiment, the anchoring portion can be corrugated, with the corrugations running parallel to the wall. In another embodiment, the sheet member can be a sheet of stainless or galvanized steel or the like, or other suitable material, with tab portions stamped therefrom to form the protrusions.
Inventors
- 👤 D. Thomas Borcherdt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:23
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/02; E02D29/0225; E02D29/0241; E02D29/025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
191 words
A device for use in building a wall from hollow-core concrete blocks, where said hollow cores in said blocks are defined by generally upright front, back and side inner surfaces and where said blocks have substantially co-planar flat front and rear bottom surfaces, said device comprising a thin metal planar member placed between horizontal rows of aid concrete blocks with said front and rear bottom surfaces of said concrete blocks resting thereon, and having integral placement projections means from either side thereof for engaging one or more of said upright inner surfaces of said hollow cores of said blocks so as to prevent said blocks from moving with respect to each other in a direction away from the plane of said wall, in which said placement projections means are tabs defined by a generally U-shaped cut made in said metal planar member, with the metal within said U-shape being bent away from said planar member at a substantial angle from said planar member, and an integral extension of said thin planar member comprising ground engaging projection means extending from said extension, to assist in anchoring said extension in a backfilled area.
Claim 2
Independent Claim
191 words
A device for use in building a wall from hollow-core concrete blocks, where said hollow cores in said blocks are defined by generally upright front, back and side inner surfaces and where said blocks have substantially co-planar flat front and rear bottom surfaces, said device comprising a thin metal planar member placed between horizontal rows of aid concrete blocks with said front and rear bottom surfaces of said concrete blocks resting thereon, and having integral placement projections means from either side thereof for engaging one or more of said upright inner surfaces of said hollow cores of said blocks so as to prevent said blocks from moving with respect to each other in a direction away from the plane of said wall, in which said placement projections means are tabs defined by a generally U-shaped cut made in said metal planar member, with the metal within said U-shape being bent away from said planar member at a substantial angle from said planar member, and an integral extension of said thin planar member comprising ground engaging projection means extending from said extension, to assist in anchoring said extension in a backfilled area.
Claim 3
Dependent Claim
43 words
A device as recited in claim 1, in which said thin planar member is arranged as a runner strip adapted to run horizontally between rows of blocks, and in which said tabs are stamped therefrom parallel to the long dimension of said strip.
Claim 4
Dependent Claim
61 words
A device as recited in claim 1, in which said thin planar member is arranged as a strip adapted to run from a position between rows of blocks back into a backfilled area behind said wall to thereby assist in anchoring said wall, and in which said tabs are stamped therefrom at right angles to the long dimension of said strip.
Claim 5
Dependent Claim
38 words
A device as recited in claim 3, in which said portion of said strip adapted to run into said backfilled area is also provided with said stamped tabs, thereby assisting in anchoring said portion in said backfilled area.
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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) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |