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US4909010A
Expired / Lapsed
US
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Concrete block for retaining walls
Assignee: Allan Block Corp
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Filing: 1987-12-17
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Granted: 1990-03-20
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Expires: 2007-12-17
Abstract
Abstract A concrete block particularly directed to the construction of retaining wall systems, characterized particularly by a step back frontal surface which includes a frontal surface having a flat decoratable portion over a substantial vertical dimension thereof and tapered rearwardly and vertically from such frontal surface to a top planar surface with an interlock area behind such surface to receive additional blocks thereon to create a wall. This interlock area provides a flat planar block locating surface for the positioning of a next vertical block and when the blocks are arranged in vertical relation on top of one another a step back frontal surface is provided. Combination drainage and tie-back anchor apertures are provided in the rear vertical surface of the block. The block includes weight reducing passages vertically therethrough which also accommodate vertical tiers. The block may include rearwardly and inwardly directed sides such that adjacent blocks are joinable to form a curved frontal surface of the constructed wall. The interlock of the blocks creates a strong barrier wall which affords an artistically conceived frontal surface. The design of the blocks provides for a vertical and horizontal tying of the blocks through reinforcing bars or other means.
Inventors
- 👤 Robert A. Gravier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:17
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/02; E02D29/025; E04; E04C; E04C1/00; E04C1/39; E04C1/395
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
188 words
A concrete block for use in construction of retaining walls and the like, said block including: a. bottom, top, rear, side and frontal surfaces, b. said bottom, rear and side surfaces being generally planar and arranged generally normal to one another; c. said top including a first support area defined over a predetermined area of said top for the support of additional blocks, a vertically extending shoulder adjacent said frontal surface of said block and extending entirely therealong to provide a continuous block positioning member in close association to said frontal surface and a second top surface at the uppermost end of said extending shoulder; d. said frontal surface defining a lower vertical portion normal to said bottom and an upper, rearwardly inclined portion extending from said vertical portion terminating at said second top surface; e. said support area and said vertical shoulder providing a locating surface to receive an additional vertically positioned block thereon wherein the additional block is positioned rearwardly from the front surface of the receiving and supporting block whereby a wall of tiers of such blocks extend rearwardly and upwardly from a support surface.
Claim 2
Dependent Claim
188 words
A concrete block for use in construction of retaining walls and the like, said block including: a. bottom, top, rear, side and frontal surfaces, b. said bottom, rear and side surfaces being generally planar and arranged generally normal to one another; c. said top including a first support area defined over a predetermined area of said top for the support of additional blocks, a vertically extending shoulder adjacent said frontal surface of said block and extending entirely therealong to provide a continuous block positioning member in close association to said frontal surface and a second top surface at the uppermost end of said extending shoulder; d. said frontal surface defining a lower vertical portion normal to said bottom and an upper, rearwardly inclined portion extending from said vertical portion terminating at said second top surface; e. said support area and said vertical shoulder providing a locating surface to receive an additional vertically positioned block thereon wherein the additional block is positioned rearwardly from the front surface of the receiving and supporting block whereby a wall of tiers of such blocks extend rearwardly and upwardly from a support surface.
Claim 3
Dependent Claim
39 words
The block structure as set forth in claim 1 and said side surfaces being inwardly and rearwardly directed with respect to said frontal surface whereby joined adjacent blocks will effect a generally curved surface to a formed retaining wall.
Claim 4
Dependent Claim
39 words
The block structure as set forth in claim 1 and said side surfaces being outwardly and rearwardly directed with respect to said frontal surface whereby joined adjacent blocks will effect a generally curved surface to a formed retaining wall.
Claim 5
Dependent Claim
109 words
The block structure as set forth in claim 1 and, a. said top including a second vertically extending shoulder adjacent one of said side surfaces of said block and in general horizontal alignment with and normal to said vertically extending shoulder adjacent said frontal surface of said block and said second to p surface extending thereover; and, b. one of said side surfaces defining a lower vertical portion normal to said bottom and an upper, rearwardly inclined portion extending from said vertical portion terminating at said second top surface whereby the block provides a corner structure with an upper block locating surface and a continuous sloped frontal surface configuration.
Claim 6
Dependent Claim
78 words
The block structure as set forth in claim 1 and at least one vertical aperture provided to extend from said first support area of said top surface to said bottom surface thereof for weight reduction of the block during construction and filling and block connection means following construction of a retaining wall, said vertical shoulder positioned with respect to said aperture whereby said additional block positioned against said vertical shoulder will cover the aperture in the block thereunder.
Claim 7
Dependent Claim
50 words
The block structure as set forth in claim 5 and channel means formed in said top support area of said block extending from said aperture through said back surface thereof for placement of earth connecting means therein whereby the constructed wall may be tied to the earth to be retained.
Claim 8
Dependent Claim
23 words
The block structure as set forth in claim 5 and a pair of vertical apertures being provided in side-by-side relation through said block.
Claim 9
Dependent Claim
53 words
The block structure as set forth in claim 7 and a channel means formed in said top support area of said block extending from each of said apertures through said back surface thereof for placement of earth connecting means therein whereby the constructed wall may be tied to the earth to be retained.
Claim 10
Dependent Claim
19 words
The block structure as set forth in claim 8 and: a. said channel means communicating with said vertical apertures.
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) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |