Patents Assigned to Keystone Retaining Wall Systems, Inc.
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Patent number: 8132988Abstract: A method of making a wall block and a mold box therefore. The wall block design maximizes the use of the mold box. The method produces wall blocks having a large surface area front face compared to the front face size of prior art blocks. The blocks have about one third more front surface area. This results in faster construction of walls and a faster construction sequence. The method of making the blocks makes efficient use of mold space and material, resulting in higher production yields and/or higher total daily production square footage.Type: GrantFiled: July 19, 2010Date of Patent: March 13, 2012Assignee: Keystone Retaining Wall Systems, Inc.Inventors: William B. Dawson, Robert A. MacDonald
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Publication number: 20110293873Abstract: An irregular, tessellated building unit comprises x primary elements, wherein x is an integer equal to or greater than 1. The primary element is a rotational tessellation having a plural pairs of sides extending in a generally radial direction from plural vertices, respectively. In each pair, the two sides are rotationally spaced by an angle that is divided evenly into 360 degrees. Preferably, all of the sides are irregularly shaped, but one or more sides could be wholly or partially straight. Optionally, spacers are provided on the sides of each unit. A wide variety of units may be constructed having different numbers and arrangements of primary elements. As all the units are combinations of primary elements, they readily mate with each other. A surface covering comprises a multiplicity of units assembled to form a continuous surface without overlap between units and without substantial gaps between units. A structure, such as a wall or column can be formed of building units of the invention.Type: ApplicationFiled: August 8, 2011Publication date: December 1, 2011Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventor: Thomas S. Riccobene
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Publication number: 20110271946Abstract: 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: July 19, 2011Publication date: November 10, 2011Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventor: David M. LaCroix
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Publication number: 20110243669Abstract: A wall block having a block body having opposed front and back faces, opposed first and second side walls, and opposed and substantially parallel top and bottom faces, the top face having a receiving channel, and the receiving channel opening onto one or more pin holes. The wall block can be used in a retaining wall made of (i) a plurality of blocks including at least one lower course and at least one upper course, at least one block comprising a block body having opposed front and back faces, opposed first and second side walls, and opposed and substantially parallel top and bottom faces, the top face having a receiving channel, and the receiving channel opening onto one or more pin holes; (ii) a soil retaining material; and (iii) a channel bar.Type: ApplicationFiled: March 3, 2011Publication date: October 6, 2011Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventors: Joseph M. Friederichs, Craig D. Moritz
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Publication number: 20110217127Abstract: A wall block having a block body having opposed front and rear faces, opposed first and second side walls, and opposed and substantially parallel top and bottom faces, one or more pin holes that open onto the top face of the block, and one or more lugs that extend from the bottom face, each lug having a back surface that extends contiguously from the rear face of the block. A corner block for use with the wall block. A retaining wall comprising a plurality of wall blocks including at least one lower course and at least one upper course.Type: ApplicationFiled: March 1, 2011Publication date: September 8, 2011Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventor: Robert A. MacDonald
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Patent number: 7993718Abstract: An irregular, tessellated building unit comprises x primary elements, wherein x is an integer equal to or greater than 1. The primary element is a rotational tessellation having a plural pairs of sides extending in a generally radial direction from plural vertices, respectively. In each pair, the two sides are rotationally spaced by an angle that is divided evenly into 360 degrees. Preferably, all of the sides are irregularly shaped, but one or more sides could be wholly or partially straight. Optionally, spacers are provided on the sides of each unit. A wide variety of units may be constructed having different numbers and arrangements of primary elements. As all the units are combinations of primary elements, they readily mate with each other. A surface covering comprises a multiplicity of units assembled to form a continuous surface without overlap between units and without substantial gaps between units. A structure, such as a wall or column can be formed of building units of the invention.Type: GrantFiled: January 18, 2010Date of Patent: August 9, 2011Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Thomas S. Riccobene
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Publication number: 20110179747Abstract: A retaining wall block having a rear flange and a mold box and method of making the block. The mold box is configured with a mold cavity that includes a vertical flange forming cavity extending from the top of the mold box to the bottom of the mold box.Type: ApplicationFiled: April 7, 2011Publication date: July 28, 2011Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventors: Robert A. MacDonald, David M. LaCroix
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Publication number: 20110179737Abstract: 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: April 7, 2011Publication date: July 28, 2011Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventor: Robert A. MacDonald
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Patent number: 7971407Abstract: 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: GrantFiled: May 21, 2008Date of Patent: July 5, 2011Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald
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Publication number: 20110107707Abstract: 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: January 17, 2011Publication date: May 12, 2011Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventors: Robert A. MacDonald, Robert J. Race
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Publication number: 20110072753Abstract: Wall blocks, veneers, veneer connectors, walls, and methods of constructing walls are provided. More particularly, the invention relates to constructing walls in which a veneer panel is attached to a wall block with a connector and in which the front faces of the veneers have a desirable texture.Type: ApplicationFiled: September 29, 2010Publication date: March 31, 2011Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventor: Robert A. MacDonald
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Patent number: 7871223Abstract: 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 to into first and second neck wall members extending rearwardly from the body portion to the head portion.Type: GrantFiled: December 23, 2009Date of Patent: January 18, 2011Assignee: Keystone Retaining Wall Systems, Inc.Inventors: Robert A. MacDonald, Robert J. Race
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Publication number: 20100310695Abstract: A floating cut-off bar that follows a preselected path of travel over a mold box during a block production cycle. The floating cut-off bar may be coupled to a feed drawer whereby a mechanism allows the floating cut-off bar to engage the specified contour of a division plate in a mold box assembly and aid in material distribution by screeding excess material and delivering additional material to areas of the mold box as necessary and method of making wall blocks therefrom. The specified contour of the division plate is designed to optimally deliver material to achieve a specified uniform density of the block produced for greater structural integrity, strength and durability of the block.Type: ApplicationFiled: October 16, 2009Publication date: December 9, 2010Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.Inventors: David M. LaCroix, Robert A. MacDonald
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Patent number: D633629Type: GrantFiled: February 11, 2010Date of Patent: March 1, 2011Assignee: Keystone Retaining Wall Systems, Inc.Inventors: Robert A. MacDonald, David M. LaCroix
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Patent number: D646403Type: GrantFiled: February 28, 2011Date of Patent: October 4, 2011Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald
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Patent number: D647218Type: GrantFiled: February 28, 2011Date of Patent: October 18, 2011Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald
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Patent number: D647219Type: GrantFiled: February 28, 2011Date of Patent: October 18, 2011Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald
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Patent number: D647632Type: GrantFiled: February 28, 2011Date of Patent: October 25, 2011Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald
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Patent number: D647633Type: GrantFiled: February 28, 2011Date of Patent: October 25, 2011Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald
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Patent number: D653356Type: GrantFiled: February 28, 2011Date of Patent: January 31, 2012Assignee: Keystone Retaining Wall Systems, Inc.Inventor: Robert A. MacDonald