Patents Assigned to Keystone Retaining Wall Systems, Inc.
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Publication number: 20080313988Abstract: Veneers for walls, retaining walls, retaining wall blocks, gabions, wire faces, and other structures are provided. Various methods of attaching the veneers are also described. A combination of a wall block and a veneer is provided. The wall block has a front face with a block connection space, and the veneer has a front face with a veneer connection portion. The veneer is attached to the front face of the wall block by the veneer connection portion, which is disposed in the block connection space.Type: ApplicationFiled: June 23, 2008Publication date: December 25, 2008Applicant: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald
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Publication number: 20080307740Abstract: The present invention relates a mold box method of manufacturing a block, and a wall block with a stepped-back strata and ledges imprinted on one or more faces of the block. A mold box is provided with a block face liner that is machine cut to create a particular strata and ledge pattern that is widest at the top of the liner and steps back over a plurality of planes to a narrower width at the bottom of the liner. Masonry material is allowed to form in the mold box around the liner to produce the strata and ledges imprint onto one or more faces of the block. The invention also relates to the mold box, multiple embodiments of the block face liner with differing strata and ledge patterns, and to blocks formed in the mold box and methods of constructing walls with the blocks.Type: ApplicationFiled: June 13, 2008Publication date: December 18, 2008Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventor: Robert A. MacDonald
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Publication number: 20080302350Abstract: The invention provides a block splitter assembly comprising first lower and second upper opposed splitter blade assemblies. The splitter blade assemblies have a splitting blade and two or more first forming blades. One forming blade is disposed to the right of and one forming blade is disposed to the left of the first splitting blade. The forming blades have forming edges. The splitting blade has a splitting edge that is straight, and the splitting blade has a greater maximum vertical dimension than the maximum vertical dimension of the forming blades. The splitting edge of the first splitting blade is opposed to the splitting edge of the second splitting blade.Type: ApplicationFiled: June 5, 2008Publication date: December 11, 2008Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventor: David M. LaCroix
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Publication number: 20080289282Abstract: Wall blocks and methods of constructing walls from the wall blocks which have a side connection system interlocking adjacent blocks whereby a side of the block is provided with a channel or slot that is configured to engage a corresponding projection on the adjacent block. The side connection system may alternatively have a connection receiving cavity formed by channels or slots on the sides of the blocks which are configured to align with a channel or slot from adjacent blocks where a connector may be received to interlock the blocks.Type: ApplicationFiled: May 21, 2008Publication date: November 27, 2008Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventor: Robert A. MacDonald
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Publication number: 20080277561Abstract: A mold box with an angled division plate and methods for making blocks of various shapes and sizes and columns and walls constructed with the blocks. Multiple embodiments of the mold box are disclosed for enabling different numbers of blocks and sizes of blocks to be formed in a single mold box.Type: ApplicationFiled: May 9, 2008Publication date: November 13, 2008Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventor: Robert A. MacDonald
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Patent number: 7448830Abstract: A retaining wall block (1) has parallel top and bottom faces (2, 3), a front face (4), a rear face (5), first and second side wall faces (6, 7) and a vertical plane of symmetry (S) extending between the front and rear faces (4, 5). The block (1) is formed as a body portion (8) including the front face (4), a head portion (9) including the rear face (5) and a neck portion (10) connecting the body portion (8) and the head portion (9). The body, head and neck portions (8, 9, 10) each extend between the top and bottom faces (2, 3) and between the first and second side wall faces (6, 7). An opening (13)? extends through the neck portion (10) from the top face (2) to the bottom face (3), dividing the neck portion (10) into first and second neck wall members (14, 15) extending rearwardly from the body portion (8) to the head portion (9).Type: GrantFiled: January 26, 2007Date of Patent: November 11, 2008Assignee: Keystone Retaining Wall Systems, Inc.Inventors: Robert A. MacDonald, Robert J. Race
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Publication number: 20080190057Abstract: A retaining wall block has parallel top and bottom faces, a front face, a rear face, first and second side wall faces and a vertical plane of symmetry extending between the front and rear faces. The block is formed as a body portion including the front face, a head portion including the rear face and a neck portion connecting the body portion and the head portion. The body, head and neck portions each extend between the top and bottom faces and between the first and second side wall faces. An opening extends through the neck portion from the top face to the bottom face, dividing the neck portion into first and second neck wall members extending rearwardly from the body portion to the head portion.Type: ApplicationFiled: April 17, 2008Publication date: August 14, 2008Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventors: Robert A. MacDonald, Robert J. Race
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Publication number: 20080172970Abstract: A system of columnar blocks and stacking blocks interlock with each other in the construction of a pilaster or column and a fence panel, respectively, for use in a fence. The columnar blocks are generally square and the stacking blocks are generally rectangular. The columnar block faces may contain one or more slots to give a column an appearance of a masonry joint. Blocks have at least one interlocking element that permits a positive connection between courses of the blocks when the interlocking element is received in an overlying block.Type: ApplicationFiled: March 27, 2008Publication date: July 24, 2008Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventors: Robert A. MacDonald, William B. Dawson
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Patent number: 7168892Abstract: A retaining wall block (1) has parallel top and bottom faces (2, 3), a front face (4), a rear face (5), first and second side wall faces (6, 7) and a vertical plane of symmetry (S) extending between the front and rear faces (4, 5). The block (1) is formed as a body portion (8) including the front face (4), a head portion (9) including the rear face (5) and a neck portion (10) connecting the body portion (8) and the head portion (9). The body, head and neck portions (8, 9, 10) each extend between the top and bottom faces (2, 3) and between the first and second side wall faces (6, 7). An opening (13)? extends through the neck portion (10) from the top face (2) to the bottom face (3), dividing the neck portion (10) into first and second neck wall members (14, 15) extending rearwardly from the body portion (8) to the head portion (9).Type: GrantFiled: May 14, 1999Date of Patent: January 30, 2007Assignee: Keystone Retaining Wall Systems, Inc.Inventors: Robert A. MacDonald, Robert J. Race
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Patent number: 7011474Abstract: A retaining wall block system is described. The block system includes blocks of different sizes that are configured to be compatible with each other in the construction of a retaining wall or free-standing wall. Each block has at least three faces which are textured to produce the appearance of natural stone. The faces have varying sizes based on variations in width.Type: GrantFiled: November 23, 2004Date of Patent: March 14, 2006Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald
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Patent number: 6912823Abstract: A retaining wall block system having multiple sizes and shapes of blocks with differently dimensioned, interchangeable front and back faces. The blocks are used to construct an irregularly textured wall having a weathered, natural appearance. Multiple channels in the lower face of the block are used to engage pins in pin-receiving apertures to form an attachment system. A side connection system is particularly useful for stabilizing free-standing walls. Horizontal reinforcing members are also used in the channels and vertical reinforcing members are used in cores of adjacent blocks for reinforcing a wall. Reinforcing geosynthetic materials can also be firmly held in a wall by means of the pins or by connectors adapted to fit in the block channels.Type: GrantFiled: July 11, 2002Date of Patent: July 5, 2005Assignee: Keystone Retaining Wall Systems, Inc.Inventors: Robert A. MacDonald, Robert J. Race
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Patent number: 6893192Abstract: A retaining wall block system is described. The block system includes blocks of different sizes that are configured to be compatible with each other in the construction of a retaining wall or free-standing wall. Each block has at least three faces which are textured to produce the appearance of natural stone. The faces have varying sizes based on variations in width.Type: GrantFiled: June 20, 2003Date of Patent: May 17, 2005Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald
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Patent number: 6854231Abstract: A retaining wall block system having multiple sizes and shapes of blocks with differently dimensioned, interchangeable front and back faces. The blocks are used to construct an irregularly textured wall having a weathered, natural appearance. Multiple channels in the lower face of the block are used to engage pins in pin-receiving apertures to form an attachment system. Horizontal reinforcing members are also used in the channels and vertical reinforcing members are used in cores of adjacent blocks for reinforcing a wall. Reinforcing geosynthetic materials can also be firmly held in a wall by means of the pins or by connectors adapted to fit in the block channels.Type: GrantFiled: July 12, 2001Date of Patent: February 15, 2005Assignee: Keystone Retaining Wall Systems, Inc.Inventors: Robert A. MacDonald, Robert J. Race
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Patent number: 6821058Abstract: A retaining wall system and connector therefor. The system can be used with soil reinforcement material. The connector can function to hold the reinforcement material in place in addition to interlocking the blocks together.Type: GrantFiled: June 24, 2003Date of Patent: November 23, 2004Assignee: Keystone Retaining Wall Systems, Inc.Inventor: William B. Dawson
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Patent number: 6803002Abstract: A method for treating the surfaces and edges of a block to mimic the appearance of natural stone. The apparatus and method can treat up to four sides of a block, can be adjusted to provide varying degrees of surface and edge treatment, and useful in high volume block production equipment. Blocks are produced having a natural, weathered appearance without the damage, breakage, dust, or expense associated with conventional splitting and tumbling methods.Type: GrantFiled: May 17, 2002Date of Patent: October 12, 2004Assignee: Keystone Retaining Wall Systems, Inc.Inventors: Antal Z. Suto, John A. Campau, John Daniel Campau, Donald L. Reuschel, Robert A. MacDonald
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Publication number: 20040088929Abstract: Landscaping blocks for decorative edging are designed to form overlapping or interlocking joints between adjacent blocks, so that weed growth between the blocks is prevented or deterred when the blocks are arranged as a border or edging.Type: ApplicationFiled: September 23, 2003Publication date: May 13, 2004Applicant: Keystone Retaining Wall Systems, Inc.Inventors: William B. Dawson, Robert A. MacDonald
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Patent number: D501935Type: GrantFiled: July 21, 2003Date of Patent: February 15, 2005Assignee: Keystone Retaining Wall Systems, Inc.Inventors: William B. Dawson, Robert A. MacDonald
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Patent number: D488568Type: GrantFiled: June 3, 2003Date of Patent: April 13, 2004Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald
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Patent number: D488569Type: GrantFiled: June 20, 2003Date of Patent: April 13, 2004Assignee: Keystone Retaining Wall Systems, Inc.Inventor: William B. Dawson
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Patent number: D490542Type: GrantFiled: June 3, 2003Date of Patent: May 25, 2004Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald