Patents Assigned to Keystone Retaining Wall Systems, Inc.
  • Publication number: 20100308502
    Abstract: A floating cut-off bar coupled to a feed drawer whereby a mechanism allows the floating cut-off bar to engage the specified contour of side rails and 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 side rails and optionally 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: Application
    Filed: June 3, 2010
    Publication date: December 9, 2010
    Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.
    Inventors: David M. LaCroix, Robert A. MacDonald
  • Publication number: 20100281809
    Abstract: 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: Application
    Filed: July 19, 2010
    Publication date: November 11, 2010
    Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.
    Inventors: William B. Dawson, Robert A. MacDonald
  • Patent number: 7780141
    Abstract: 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: Grant
    Filed: January 9, 2004
    Date of Patent: August 24, 2010
    Assignee: Keystone Retaining Wall Systems, Inc.
    Inventors: William B. Dawson, Robert A. MacDonald
  • Publication number: 20100095632
    Abstract: 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: Application
    Filed: December 23, 2009
    Publication date: April 22, 2010
    Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.
    Inventors: Robert A. MacDonald, Robert J. Race
  • Publication number: 20100064620
    Abstract: A system of blocks is configured to be compatible with each other in the construction of a columnar structure. Each block has four faces and all four faces may generally have the same dimensions. The width of the blocks may generally be about twice their height. The faces of the block also may contain a slot to add an aesthetic appearance to the column. The blocks have certain constructions features that mate with specially constructed brackets in attaching a fence panel to the completed column. The blocks have interlocking elements or projections that permit positive connection between courses of blocks. Projections of one block extend into the core another block. Adjacent blocks can be rotated 90 degrees relative to each other about a vertical axis of each block with each course. The blocks can be used to construct a column that is easy to install and structurally sound.
    Type: Application
    Filed: November 23, 2009
    Publication date: March 18, 2010
    Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.
    Inventors: Robert A. MacDonald, William B. Dawson
  • Patent number: 7654776
    Abstract: 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: Grant
    Filed: April 17, 2008
    Date of Patent: February 2, 2010
    Assignee: Keystone Retaining Wall Systems, Inc.
    Inventors: Robert A. MacDonald, Robert J. Race
  • Patent number: 7641178
    Abstract: A system of blocks is configured to be compatible with each other in the construction of a columnar structure. Each block has four faces and all four faces may generally have the same dimensions. The width of the blocks may generally be about twice their height. The faces of the block also may contain a slot to add an aesthetic appearance to the column. The blocks have certain constructions features that mate with specially constructed brackets in attaching a fence panel to the completed column. The blocks have interlocking elements or projections that permit positive connection between courses of blocks. Projections of one block extend into the core another block. Adjacent blocks can be rotated 90 degrees relative to each other about a vertical axis of each block with each course. The blocks can be used to construct a column that is easy to install and structurally sound.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: January 5, 2010
    Assignee: Keystone Retaining Wall Systems, Inc.
    Inventors: Robert A. MacDonald, William B. Dawson
  • Publication number: 20090313936
    Abstract: A veneer panel system is used with a wall or a retaining wall to provide a natural stone appearance and/or to improve the appearance of an existing wall. Panels can be interlocked to form a stable veneer structure. The structure is attached to a wall by various attachment means.
    Type: Application
    Filed: August 31, 2009
    Publication date: December 24, 2009
    Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.
    Inventors: Robert A. MacDonald, William B. Dawson
  • Publication number: 20090308015
    Abstract: 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: Application
    Filed: July 30, 2009
    Publication date: December 17, 2009
    Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.
    Inventors: Robert A. MacDonald, David M. LaCroix
  • Publication number: 20090304459
    Abstract: A method of making a retaining wall including a plurality of wall blocks and geogrid. A veneer panel system is used with a wall or a retaining wall to provide a natural stone appearance and/or to improve the appearance of an existing wall. Panels can be interlocked to form a stable veneer structure. The structure is attached to a wall by various attachment means.
    Type: Application
    Filed: August 19, 2009
    Publication date: December 10, 2009
    Applicant: Keystone Retaining Wall Systems, Inc.
    Inventors: Robert A. MacDonald, William B. Dawson
  • Publication number: 20090188196
    Abstract: A corner block and a wall block system with a corner block for forming in multiple courses a wall which includes first and second visible wall portions which meet at a corner and where the corner block has a front face and at least one side surface having a texture or pattern matching the texture or pattern of a front face of a first block of the wall system.
    Type: Application
    Filed: January 30, 2009
    Publication date: July 30, 2009
    Applicant: Keystone Retaining Wall Systems, Inc.
    Inventor: Robert A. MacDonald
  • Publication number: 20090151281
    Abstract: This invention relates generally to a method of constructing walls or fence systems from panels. More particularly, the invention relates to constructing such walls or fence systems wherein a back face of one panel connects to a back face of another panel and further wherein the front faces of the panels have a desirable texture and further wherein a concrete footing of the wall or fence system is poured after courses of panels have been stacked one upon the other.
    Type: Application
    Filed: November 20, 2008
    Publication date: June 18, 2009
    Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.
    Inventors: Robert A. MacDonald, Blaine French, David M. LaCroix
  • Publication number: 20090120029
    Abstract: A wall block having at least one weight bearing pad on an upper or lower surface of the block and a compression head and methods of making the block and making walls with the block.
    Type: Application
    Filed: November 7, 2008
    Publication date: May 14, 2009
    Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.
    Inventors: David M. LaCroix, Robert A. MacDonald
  • Publication number: 20090103987
    Abstract: 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: Application
    Filed: October 16, 2008
    Publication date: April 23, 2009
    Applicant: KEYSTONE RETAINING WALL SYSTEMS, INC.
    Inventor: Robert A. MacDonald
  • Patent number: D610710
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: February 23, 2010
    Assignee: Keystone Retaining Wall Systems, Inc.
    Inventors: David M. LaCroix, Robert A. MacDonald
  • Patent number: D610711
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: February 23, 2010
    Assignee: Keystone Retaining Wall Systems, Inc.
    Inventors: David M. LaCroix, Robert A. MacDonald
  • Patent number: D620615
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: July 27, 2010
    Assignee: Keystone Retaining Wall Systems, Inc.
    Inventors: Robert A. MacDonald, David M. LaCroix
  • Patent number: D621070
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: August 3, 2010
    Assignee: Keystone Retaining Wall Systems, Inc.
    Inventors: Robert A. MacDonald, David M. LaCroix
  • Patent number: D624666
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: September 28, 2010
    Assignee: Keystone Retaining Wall Systems, Inc.
    Inventors: David M. LaCroix, Robert A. MacDonald
  • Patent number: D628713
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: December 7, 2010
    Assignee: Keystone Retaining Wall Systems, Inc.
    Inventors: David M. LaCroix, Robert A. MacDonald