IP Library Granted Patent US 11,401,714
Granted Patent B2
US 11,401,714 · App. 16/730,102 · Granted Aug 2, 2022

Retaining wall containing wall blocks with weight bearing pads

Inventor: David M. LaCroix (St. Paul, MN)
Assignee: Keystone Retaining Wall Systems, LLC
E04C1/395B28B3/021B28B7/0097B28B7/241E02D29/025E02D29/0266E04B2/44
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Quick Facts
Patent No.
US 11,401,714
App. No.
16/730,102
Filed
Dec 30, 2019
Granted
Aug 2, 2022
Kind
B2
Art Unit
3649
USPC
52/603
Abstract

A retaining wall having a plurality of courses of retaining wall blocks including a first upper course and a second lower course. Each retaining wall block has opposed front and rear faces, opposed first and second side surfaces, and opposed and substantially parallel upper and lower surfaces, and at least one weight bearing pad extends from one of the upper and lower surfaces. The at least one weight bearing pad extends substantially from the rear face to the front face of the block. The weight bearing pads are the only areas of contact between the blocks in the first upper course and the blocks in the second lower course.

Claims (30)

1. A block for forming a portion of an exposed surface of a wall of a structure, the block comprising:

a body with a front face opposed to a compound shaped rear face, the front face forming a portion of the exposed surface of the wall, opposed first and second side surfaces, and an upper surface opposed to a lower surface, the compound shape of the rear face of the body having two or more rearmost surfaces and two or more recessed surfaces, the block having two or more weight bearing surfaces extending a height from the upper surface of the body, each weight bearing surface having a planar surface, the planar surface of each weight bearing surface being the uppermost surface of the block;

wherein the body has a front portion extending from the front face to the two or more recessed surfaces of the compound shaped rear face and a rear portion extending from the two or more recessed surfaces to the two or more rearmost surfaces of the compound shaped rear face and wherein the two or more weight bearing surfaces extend along the upper surface of the body from the front portion to the rear portion of the body beyond each recessed surface of the compound shaped rear face.

2. The block of claim 1 , wherein the two or more rearmost surfaces includes more than two rearmost surfaces, wherein the two or more recessed surfaces includes more than two recessed surfaces, wherein the two or more weight bearing surfaces includes more than two weight bearing surfaces.

3. A wall block system for constructing a wall with one or more exposed surfaces comprising:

a plurality of wall blocks having a block body with a front face opposed to a compound shaped rear face, opposed first and second side surfaces, and an upper surface opposed to a lower surface, the compound shape of the rear face of the block body having two or more rearmost surfaces and two or more recessed surfaces, the plurality of wall blocks having two or more weight bearing surfaces extending a height from the upper surface of the block body, each weight bearing surface having a planar surface, the planar surface of each weight bearing surface being the uppermost surface of the wall block;

wherein the block body has a front portion extending from the front face to the two or more recessed surfaces of the compound shaped rear face and a rear portion extending from the two or more recessed surfaces to the two or more rearmost surfaces of the compound shaped rear face and wherein each one of the two or more weight bearing surfaces extends along the upper surface of the block body from the front portion to the rear portion of the block body beyond each recessed surface of the compound shaped rear face.

4. The wall block system of claim 3 , wherein the two or more rearmost surfaces includes more than two rearmost surfaces, wherein the two or more recessed surfaces includes more than two recessed surfaces, wherein the two or more weight bearing surfaces includes more than two weight bearing surfaces.

5. The wall block system of claim 3 , further comprising a plurality of connectors wherein one or more of the plurality of connectors couples one of the plurality of wall blocks to another one of the plurality of wall blocks.

6. The wall block system of claim 3 , wherein the wall constructed from the wall block system has at least a first exposed surface and a second exposed surface and wherein the front faces of some of the plurality of wall blocks form the first exposed surface and some of the plurality of wall blocks form the second exposed surface.

7. A wall having one or more exposed surfaces comprising a plurality of courses of wall blocks including at least a first upper course and an adjacent second lower course,

a plurality of wall blocks having a block body with a front face opposed to a compound shaped rear face, opposed first and second side surfaces, and an upper surface opposed to a lower surface, the compound shape of the rear face of the block body having two or more rearmost surfaces and two or more recessed surfaces, the plurality of wall blocks having two or more weight bearing surfaces extending a height from the upper surface of the block body, each weight bearing surface having a planar surface, the planar surface of each weight bearing surface being the uppermost surface of the wall block, the block body having a front portion extending from the front face to the two or more recessed surfaces of the compound shaped rear face and a rear portion extending from the two or more recessed surfaces to the two or more rearmost surfaces of the compound shaped rear face, wherein each one of the two or more weight bearing surfaces of the block body extends along the upper surface of the block body from the front portion to the rear portion of the block body beyond each recessed surface of the compound shaped rear face, and

wherein the front faces of the plurality of blocks of the at least first upper course and adjacent second lower course form the one or more exposed surfaces of the wall.

8. The wall of claim 7 , wherein the wall has at least a first exposed surface having at least a first upper course and an adjacent second lower course of wall blocks and a second exposed surface having at least a first upper course and an adjacent second lower course of wall blocks and wherein the front faces of some of the plurality of wall blocks form the first exposed surface of the wall and the front faces of some of the plurality of wall blocks form the second exposed surface of the wall.

9. The wall of claim 8 , wherein the first exposed surface of the wall has a vertical plane formed by the front faces of the wall blocks of the at least first upper course and adjacent second lower course and the second exposed surface of the wall has a vertical plane formed by the front faces of the wall blocks of the at least first upper course and adjacent second lower course, wherein the vertical plane of the first exposed surface is different than the vertical plane of the second exposed surface.

10. The wall of claim 7 , wherein two or more rearmost surfaces includes more than two rearmost surfaces, wherein the two or more recessed surfaces includes more than two recessed surfaces, wherein the two or more weight bearing surfaces includes more than two weight bearing surfaces.

11. The wall of claim 10 , wherein the wall has at least a first exposed surface having at least a first upper course and an adjacent second lower course of wall blocks and a second exposed surface having at least a first upper course and an adjacent second lower course of wall blocks and wherein the front faces of some of the plurality of wall blocks form the first exposed surface of the wall and the front faces of some of the plurality of wall blocks form the second exposed surface of the wall.

12. The wall of claim 11 , wherein the first exposed surface of the wall has a vertical plane formed by the front faces of the wall blocks of the at least first upper course and adjacent second lower course and the second exposed surface of the wall has a vertical plane formed by the front faces of the wall blocks of the at least first upper course and adjacent second lower course, wherein the vertical plane of the first exposed surface is different than the vertical plane of the second exposed surface.

13. The wall of claim 12 , further comprising a plurality of connectors wherein one or more of the plurality of connectors couples one of the plurality of wall blocks to another one of the plurality of wall blocks.

14. A block for forming a portion of an exposed surface of a wall of a structure, the block comprising:

a body comprising:

a planar front face opposed to a compound shaped rear face, the planar front face forming a portion of the exposed surface of the wall, the compound shape of the rear face of the body having first and second rearmost surfaces separated by a recess;

opposed first and second side surfaces; and

an upper surface opposed to a lower surface,

a plurality of weight bearing surfaces formed on the upper surface, wherein a weight bearing surface of the plurality of weight bearing surfaces extends more than half of a distance between the front face to the first rearmost surface and extends a height above the upper surface, wherein the weight bearing surface of the plurality of weight bearing surfaces includes a planar surface that forms an uppermost surface of the body, wherein the weight bearing surface of the plurality of weight bearing surfaces is set back from the planar front surface.

15. The block of claim 14 , wherein the weight bearing surface of the plurality of weight bearing surfaces is formed on an area of the upper surface adjacent the first side surface.

16. The block of claim 15 , wherein a second weight bearing surface of the plurality of weight bearing surfaces is formed on a second area of the upper surface adjacent the second side surface.

17. The block of claim 14 , wherein a second weight bearing surface of the plurality of weight bearing surfaces is formed on a second area of the upper surface adjacent the second side surface.

18. The block of claim 14 , wherein the weight bearing surface of the plurality of weight bearing surfaces has a rectangular shape.

19. The block of claim 14 , wherein the planar front face includes a smooth texture or a roughened texture that provides a natural stone appearance.

Assignments (6)
PATENT SECURITY AGREEMENT Recorded Feb 10, 2025
From: BEST BLOCK, LLC; CONTECH ENGINEERED SOLUTIONS LLC; CUSTOM BUILDING PRODUCTS, LLC; FORTERRA CONCRETE PRODUCTS, LLC; FORTERRA PIPE & PRECAST, LLC; KEYSTONE RETAINING WALL SYSTEMS LLC; PAVESTONE, LLC; THE QUIKRETE COMPANIES, LLC; UNITED STATES PIPE AND FOUNDRY COMPANY, LLC; USP HOLDINGS, LLC
To: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION
Reel/Frame 070170/0919 →
PATENT SECURITY AGREEMENT (ABL) Recorded Mar 23, 2022
From: UNITED STATES PIPE AND FOUNDRY COMPANY, LLC; GRIFFIN PIPE PRODUCTS CO., LLC; CUSTOM FAB, INC.; BIO CLEAN ENVIRONMENTAL SERVICES, INC.; MODULAR WETLAND SYSTEMS, INC.; FORTERRA PIPE & PRECAST, LLC; FORTERRA CONCRETE PRODUCTS, INC.; FORTERRA PRECAST CONCEPTS, LLC; BEST BLOCK, LLC; PAVESTONE, LLC; CONTECH ENGINEERED SOLUTIONS LLC; KEYSTONE RETAINING WALL SYSTEMS LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 059479/0336 →
PATENT SECURITY AGREEMENT (ABL) Recorded Mar 23, 2022
From: UNITED STATES PIPE AND FOUNDRY COMPANY, LLC; GRIFFIN PIPE PRODUCTS CO., LLC; CUSTOM FAB, INC.; BIO CLEAN ENVIRONMENTAL SERVICES, INC.; MODULAR WETLAND SYSTEMS, INC.; FORTERRA PIPE & PRECAST, LLC; FORTERRA CONCRETE PRODUCTS, INC.; FORTERRA PRECAST CONCEPTS, LLC; BEST BLOCK, LLC; PAVESTONE, LLC; CONTECH ENGINEERED SOLUTIONS LLC; KEYSTONE RETAINING WALL SYSTEMS LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 059479/0437 →
SECURITY INTEREST Recorded Mar 18, 2022
From: KEYSTONE RETAINING WALL SYSTEMS LLC
To: WELLS FARGO BANK, N.A., AS AGENT
Reel/Frame 059437/0933 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 4, 2020
From: LACROIX, DAVID M.; MACDONALD, ROBERT A.
To: KEYSTONE RETAINING WALL SYSTEMS, INC.
Reel/Frame 052842/0484 →
CERTIFICATE OF CONVERSION Recorded Jun 4, 2020
From: KEYSTONE RETAINING WALL SYSTEMS, INC.
To: KEYSTONE RETAINING WALL SYSTEMS LLC
Reel/Frame 052845/0648 →