Patent US4930283A successfully refreshed from Google Patents.
US4930283A
Expired / Lapsed
US
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Brick
Assignee: Waldormills Co
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Filing: 1989-05-19
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Granted: 1990-06-05
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Expires: 2009-05-19
Abstract
Abstract A brick or construction element comprised of cement or synthetic sand and/or gravel of the kind for erecting high embankments or earthworks has a shield-type support with a flat front wall to which are connected lateral wing sections angled toward the rear. A tie bar extends rearwardly from the center of the shield-type support and bottom walls are located between the shield-type support and the tie bar. Boreholes are provided through the wing sections and through the free end of the tie bar, into which reinforcing bars are inserted to enable the bricks to be held together when stacking them in courses to form a retaining wall.
Inventors
- 👤 Bernhard Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:27
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/39; E04C1/395; E02; E02D; E02D29/00; E02D29/02; E02D29/025; Y; Y10; Y10S; Y10S52/00; Y10S52/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
A brick consisting of cement or synthetic sand or gravel for use in combination with other like bricks for erecting dry construction, earth retaining walls, each said brick comprising: a straight tie bar attached as a single, unitary element at the center of a shield-type support having a convex face and at right angles to at least a center section of said shield-type support; side wing sections formed at sides of said shield-type support and having a height so as to be below the shield-type support; and attachment means formed in said tie bar for cooperating with said attachment means formed in said other like bricks.
Claim 2
Dependent Claim
106 words
A brick consisting of cement or synthetic sand or gravel for use in combination with other like bricks for erecting dry construction, earth retaining walls, each said brick comprising: a straight tie bar attached as a single, unitary element at the center of a shield-type support having a convex face and at right angles to at least a center section of said shield-type support; side wing sections formed at sides of said shield-type support and having a height so as to be below the shield-type support; and attachment means formed in said tie bar for cooperating with said attachment means formed in said other like bricks.
Claim 3
Dependent Claim
27 words
A brick as defined in claim 1, further comprising a bottom wall connected to said shield-type support extending over part of the length of said tie bar.
Claim 4
Dependent Claim
27 words
A brick as defined in claim 2, wherein outside edges of each of said side wing sections include a borehole arranged substantially perpendicularly to said bottom wall.
Claim 5
Dependent Claim
28 words
A brick as defined in claim 2, wherein a width of said bottom wall becomes narrower as the distance from said shield-type support along said tie bar increases.
Claim 6
Dependent Claim
20 words
A brick as defined in claim 4, wherein the width of said wall diminishes in accordance with a convex line.
Claim 7
Dependent Claim
42 words
A brick as defined in claim 2, wherein said bottom wall proximate said shield-type support is provided on both sides of said tie bar and a through opening is formed in said bottom wall on said both sides of said tie bar.
Claim 8
Dependent Claim
26 words
A brick as defined in claim 2, wherein said attachment means comprises a borehole formed in an end of said tie bar opposite said shield-type support.
Claim 9
Dependent Claim
20 words
A brick as defined in claim 1, wherein a cross section of said tie bar is substantially an equilateral trapezoid.
Claim 10
Dependent Claim
18 words
A brick as defined in claim 8, wherein the cross section is a wedge shape broadening by degrees.
Claim 11
Dependent Claim
32 words
A brick as defined in claim 9 wherein said tie bar includes in an underside thereof a longitudinal groove whose width corresponds to that of the tie bar at an upper edge.
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) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |