WO2011109360A3 - Système de blocs pour mur de soutènement - Google Patents

Système de blocs pour mur de soutènement Download PDF

Info

Publication number
WO2011109360A3
WO2011109360A3 PCT/US2011/026638 US2011026638W WO2011109360A3 WO 2011109360 A3 WO2011109360 A3 WO 2011109360A3 US 2011026638 W US2011026638 W US 2011026638W WO 2011109360 A3 WO2011109360 A3 WO 2011109360A3
Authority
WO
WIPO (PCT)
Prior art keywords
block
retaining wall
wall
opposed
wall block
Prior art date
Application number
PCT/US2011/026638
Other languages
English (en)
Other versions
WO2011109360A2 (fr
Inventor
Robert Macdonald
Original Assignee
Keystone Retaining Wall Systems, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Keystone Retaining Wall Systems, Inc. filed Critical Keystone Retaining Wall Systems, Inc.
Priority to NZ601997A priority Critical patent/NZ601997A/en
Priority to CA2790962A priority patent/CA2790962A1/fr
Priority to EP11707971A priority patent/EP2542723A2/fr
Priority to AU2011223800A priority patent/AU2011223800A1/en
Publication of WO2011109360A2 publication Critical patent/WO2011109360A2/fr
Publication of WO2011109360A3 publication Critical patent/WO2011109360A3/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/025—Retaining or protecting walls made up of similar modular elements stacked without mortar

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Retaining Walls (AREA)

Abstract

Cette invention concerne un bloc de construction de mur comprenant un corps de bloc présentant des surfaces avant et arrière opposées, des première et seconde parois latérales opposées, et des faces supérieure et inférieure opposées et sensiblement parallèles. Ledit bloc comprend en outre un ou plusieurs trous de cheville ouverts sur la face supérieure du bloc et une ou plusieurs oreilles qui s'étendent à partir de la face inférieure, chaque oreille ayant une surface arrière qui s'étend de manière contigüe à partir de la face arrière du bloc. L'invention concerne de plus un bloc d'angle à utiliser avec le bloc de construction de mur. L'invention concerne enfin un mur de soutènement comprenant une pluralité de blocs de construction de mur et présentant au moins une assise inférieure et une assise supérieure.
PCT/US2011/026638 2010-03-02 2011-03-01 Système de blocs pour mur de soutènement WO2011109360A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NZ601997A NZ601997A (en) 2010-03-02 2011-03-01 Retaining wall block system
CA2790962A CA2790962A1 (fr) 2010-03-02 2011-03-01 Systeme de blocs pour mur de soutenement
EP11707971A EP2542723A2 (fr) 2010-03-02 2011-03-01 Système de blocs pour mur de soutènement
AU2011223800A AU2011223800A1 (en) 2010-03-02 2011-03-01 Retaining wall block system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30965010P 2010-03-02 2010-03-02
US61/309,650 2010-03-02

Publications (2)

Publication Number Publication Date
WO2011109360A2 WO2011109360A2 (fr) 2011-09-09
WO2011109360A3 true WO2011109360A3 (fr) 2012-06-21

Family

ID=43771739

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/026638 WO2011109360A2 (fr) 2010-03-02 2011-03-01 Système de blocs pour mur de soutènement

Country Status (6)

Country Link
US (1) US20110217127A1 (fr)
EP (1) EP2542723A2 (fr)
AU (1) AU2011223800A1 (fr)
CA (1) CA2790962A1 (fr)
NZ (1) NZ601997A (fr)
WO (1) WO2011109360A2 (fr)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9206599B2 (en) 2007-02-02 2015-12-08 Les Materiaux De Construction Oldcastle Canada, Inc. Wall with decorative facing
AU2011223600B2 (en) 2010-03-04 2016-02-25 Keystone Retaining Wall Systems, Inc. Retaining wall
USD663858S1 (en) 2010-07-20 2012-07-17 Keystone Retaining Wall Systems Llc Landscaping block
US20120057939A1 (en) * 2010-09-07 2012-03-08 Bone Ernest E Retaining wall block
US9441342B2 (en) 2010-09-28 2016-09-13 Les Materiaux De Construction Oldcastle Canada, In Retaining wall
US9670640B2 (en) 2010-09-28 2017-06-06 Les Materiaux De Construction Oldcastle Canada, Inc. Retaining wall
USD647632S1 (en) 2011-02-28 2011-10-25 Keystone Retaining Wall Systems, Inc. Landscaping block
USD647219S1 (en) 2011-02-28 2011-10-18 Keystone Retaining Wall Systems, Inc. Landscaping block
USD647633S1 (en) 2011-02-28 2011-10-25 Keystone Retaining Wall Systems, Inc. Landscaping block
USD656625S1 (en) 2011-03-01 2012-03-27 Keystone Retaining Wall Systems, Inc. Landscaping block
USD656627S1 (en) 2011-03-01 2012-03-27 Keystone Retaining Wall Systems, Inc. Landscaping block
USD656244S1 (en) 2011-03-01 2012-03-20 Keystone Retaining Wall Systems, Inc. Landscaping block
USD666741S1 (en) 2011-06-28 2012-09-04 Keystone Retaining Wall Systems Llc Landscaping block
USD667140S1 (en) 2011-06-28 2012-09-11 Keystone Retaining Wall Systems Llc Landscaping block
USD667139S1 (en) 2011-06-28 2012-09-11 Keystone Retaining Wall Systems Llc Landscaping block
USD666740S1 (en) 2011-06-28 2012-09-04 Keystone Retaining Wall Systems Llc Landscaping block
USD667566S1 (en) 2011-06-28 2012-09-18 Keystone Retaining Wall Systems Llc Landscaping block
US8887469B2 (en) * 2011-09-20 2014-11-18 Keystone Retaining Wall Systems Llc Slant wall block and wall section including same
USD688813S1 (en) 2012-04-19 2013-08-27 Keystone Retaining Wall Systems Llc Landscaping block
US20130276401A1 (en) 2012-04-19 2013-10-24 Keystone Retaining Wall Systems Llc Wall block and wall block system
USD720087S1 (en) 2012-12-06 2014-12-23 Keystone Retaining Wall Systems Llc Wall
US9758943B1 (en) * 2013-02-08 2017-09-12 Edward J. Anderson Molded concrete blocks having simulated brick or stone outer surfaces and method of making same
FI2959065T3 (fi) 2013-02-25 2024-01-30 Les Materiaux De Construction Oldcastle Canada Inc Seinäkokoonpano
AU2014223598A1 (en) 2013-02-28 2015-08-20 Keystone Retaining Wall Systems Llc Patio block, patio system and method of making a patio
US20140373479A1 (en) * 2013-06-21 2014-12-25 Pavestone, LLC Adjustable locator retaining wall block and mold apparatus
USD768876S1 (en) * 2014-09-19 2016-10-11 E.P. Henry Corporation Veneer block
USD767044S1 (en) * 2015-05-19 2016-09-20 Buster Timg Brick stack model construction component
US9909278B2 (en) * 2016-02-26 2018-03-06 Nationwide Reinforcing, Ltd. Concrete wall stabilizing apparatus and method
US10273648B2 (en) * 2016-03-02 2019-04-30 Evergreen Walls, Inc. Building elements for making retaining walls, and systems and methods of using same
US11149402B2 (en) 2016-03-02 2021-10-19 Evergreen Walls, Inc. Building elements for making retaining walls, and systems and methods of using same
US9856622B2 (en) 2016-03-30 2018-01-02 Robert Gordon McIntosh Retaining wall system, method of supporting same, and kit for use in constructing same
WO2018140197A1 (fr) 2017-01-25 2018-08-02 E.P. Henry Corporation Procédé et appareil pour paroi à double face
US10358817B2 (en) * 2017-03-21 2019-07-23 Anchor Wall Systems, Inc. Building block, wall constructions made from building blocks, and methods
USD867620S1 (en) * 2017-10-05 2019-11-19 Western Interlock, Inc. Retaining wall block
USD844857S1 (en) * 2017-10-05 2019-04-02 Western Interlock, Inc. Retaining wall corner block
US10760269B2 (en) 2017-10-25 2020-09-01 Keystone Retaining Wall Systems Llc Retaining wall block and retaining wall block system
USD846760S1 (en) 2017-10-25 2019-04-23 Keystone Retaining Wall Systems Llc Wall block
US10532488B2 (en) * 2018-02-22 2020-01-14 Western Interlock, Inc. Method and mold for retaining wall corner and column blocks
CA183952S (en) 2018-10-05 2019-08-12 Rocky Mountain Stone Works Ltd Block for a retaining wall
CA3064111A1 (fr) 2018-12-06 2020-06-06 Keystone Retaining Wall Systems Llc Linteau de pontage ayant des crochets de support pour un insert et un systeme de blocs pour une structure
US11352760B2 (en) 2020-10-09 2022-06-07 Shoreloc Design Group, Inc. Masonry block
USD952907S1 (en) 2020-10-09 2022-05-24 Shoreline Stone Manufacturing Carib, Inc. Masonry block
USD950775S1 (en) 2020-10-09 2022-05-03 Shoreloc Design Group, Inc. Masonry block

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1287055A (en) * 1918-03-15 1918-12-10 Arthur H Lehman Building-block machine.
WO1994023136A2 (fr) * 1993-03-31 1994-10-13 The Reinforced Earth Company Construction a murs de retenue en blocs modulaires et elements constitutifs
US5702208A (en) * 1994-06-02 1997-12-30 Hilfiker; William K. Grid-locked block panel system
US5711130A (en) * 1995-11-17 1998-01-27 Shatley; Josh L. Building block
US20030009970A1 (en) * 2001-07-12 2003-01-16 Macdonald Robert A. Multi-channel retaining wall block and system
US20050016106A1 (en) * 2003-07-21 2005-01-27 Dawson William B. Method of making wall block
US20090103988A1 (en) * 2006-03-31 2009-04-23 Holmes Solutions Limited Retaining wall and blocks for the formation thereof

Family Cites Families (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2313363A (en) 1940-07-02 1943-03-09 George H Schmitt Retaining wall and block for the same
USD301064S (en) * 1986-05-14 1989-05-09 Keystone Retaining Wall Systems, Inc. Convex block
USD296007S (en) * 1986-05-27 1988-05-31 Keystone Retaining Wall Systems, Inc. Wall block
USRE34314E (en) 1986-09-15 1993-07-20 Keystone Retaining Wall Systems, Inc. Block wall
US4914876A (en) 1986-09-15 1990-04-10 Keystone Retaining Wall Systems, Inc. Retaining wall with flexible mechanical soil stabilizing sheet
US4920712A (en) * 1989-01-31 1990-05-01 Stonewall Landscape Systems, Inc. Concrete retaining wall block, retaining wall and method of construction therefore
US5062610A (en) * 1989-09-28 1991-11-05 Block Systems Inc. Composite masonry block mold for use in block molding machines
US5294216A (en) * 1989-09-28 1994-03-15 Anchor Wall Systems, Inc. Composite masonry block
IT1243057B (it) * 1990-08-20 1994-05-23 Rdb Plastotecnica Spa Blocco particolarmente per la realizzazione di muri di contenimento a secco
USD319885S (en) * 1990-11-30 1991-09-10 Kiltie Corporation Retaining wall block
USD321060S (en) * 1990-11-30 1991-10-22 Kiltie Corporation Retaining wall block
US5161918A (en) * 1991-01-30 1992-11-10 Wedgerock Corporation Set-back retaining wall and concrete block and offset pin therefor
USD341215S (en) * 1991-12-06 1993-11-09 Kiltie Corporation Retaining wall block
USD380560S (en) * 1992-05-21 1997-07-01 Keystone Retaining Wall Systems, Inc. Three faceted broken front face of a retaining wall block
USD346667S (en) * 1992-09-09 1994-05-03 Kiltie Corporation Retaining wall block
USD352789S (en) * 1993-01-11 1994-11-22 Adam Paul W Retaining wall block
US5474405A (en) * 1993-03-31 1995-12-12 Societe Civile Des Brevets Henri C. Vidal Low elevation wall construction
US5507599A (en) * 1993-03-31 1996-04-16 Societe Civile Des Brevets Henri C. Vidal Modular block retaining wall construction and components
US5568994A (en) * 1994-05-19 1996-10-29 Keystone Retaining Wall Systems, Inc. Landscaping block
US5598679A (en) 1994-12-20 1997-02-04 Orton; Michael V. Cast concrete block and method of making same
USD391376S (en) * 1995-04-12 1998-02-24 Handy-Stone Corporation Retaining wall block
USD381086S (en) * 1995-05-03 1997-07-15 Keystone Retaining Wall Systems, Inc. Front face of a retaining wall block
US5913790A (en) * 1995-06-07 1999-06-22 Keystone Retaining Wall Systems, Inc. Plantable retaining wall block
US5601384A (en) * 1995-06-07 1997-02-11 Keystone Retaining Wall Systems, Inc. Plantable retaining wall
USD397808S (en) * 1995-07-25 1998-09-01 Keystone Retaining Wall Systems, Inc. Landscaping block
USD384168S (en) * 1995-10-23 1997-09-23 Keystone Retaining Wall & Systems, Inc. Plantable wall block
USD387434S (en) * 1996-01-03 1997-12-09 Keystone Retaining Wall Systems, Inc. Front face of a plantable retaining wall block
US5619835A (en) * 1996-01-25 1997-04-15 The Tensar Corporation Modular block retaining wall system
USD429004S (en) * 1996-05-10 2000-08-01 Handy-Stone Corporation Retaining wall block
AU2782197A (en) * 1996-05-21 1997-12-09 Netlon Limited Modular block retaining wall construction
USD397230S (en) * 1996-10-22 1998-08-18 Keystone Retaining Wall Systems, Inc. Front face of a retaining wall
US5865006A (en) * 1997-06-02 1999-02-02 Keystone Retaining Wall Systems, Inc. Retaining wall block and wall construction
USD397451S (en) * 1997-06-10 1998-08-25 Keystone Retaining Wall Systems, Inc. Section of a retaining wall with plantable blocks
US5941042A (en) * 1997-07-16 1999-08-24 Pacific Precast Products Ltd. Garden block
US5984589A (en) * 1998-03-10 1999-11-16 Ciccarello; Charles Wall construction block with retaining pin inserts
US6035599A (en) * 1998-05-19 2000-03-14 County Concrete Corporation Corner block system for retaining wall
AUPP647298A0 (en) * 1998-10-13 1998-11-05 Keystone Retaining Wall Systems, Inc. Retaining wall block
USD430308S (en) * 1998-11-19 2000-08-29 Keystone Retaining Wall Systems Retaining wall block
US6149352A (en) * 1999-02-11 2000-11-21 Keystone Retaining Wall Systems, Inc. Retaining wall block system
US6168354B1 (en) * 1999-05-14 2001-01-02 James S. Martin Retaining wall block having a locking shear key for residing between respective adjacent sides of like blocks in an adjacent upper or lower course
US6527483B1 (en) * 1999-09-28 2003-03-04 Frederic R. Agee Retaining wall assembly
US6488448B1 (en) * 1999-10-15 2002-12-03 Kiltie Corp. Block module
USD435302S (en) * 1999-10-15 2000-12-19 Kiltie Corp. Front surface of a retaining wall module
US6615561B2 (en) * 2001-06-07 2003-09-09 Keystone Retaining Wall Systems, Inc. Retaining wall block
US6536994B2 (en) * 2001-07-12 2003-03-25 Keystone Retaining Wall Systems, Inc. Grooved retaining wall block and system
AU2002362879B2 (en) * 2001-10-18 2008-01-10 Westblock Systems, Inc. Wall block, system and method
US6622445B1 (en) * 2001-11-20 2003-09-23 Ridgerock Retaining Walls, Inc. Modular wall block with mechanical anchor pin
US6803002B2 (en) * 2002-05-17 2004-10-12 Keystone Retaining Wall Systems, Inc. Method for making and treating wall blocks
USD479342S1 (en) * 2002-11-12 2003-09-02 Keystone Retaining Wall Systems, Inc. Landscaping block
USD488242S1 (en) * 2003-06-03 2004-04-06 Keystone Retaining Wall Systems, Inc. Landscaping block
USD488568S1 (en) * 2003-06-03 2004-04-13 Keystone Retaining Wall Systems, Inc. Landscaping block
USD490542S1 (en) * 2003-06-03 2004-05-25 Keystone Retaining Wall Systems, Inc. Landscaping block
US6821058B1 (en) * 2003-06-24 2004-11-23 Keystone Retaining Wall Systems, Inc. Retaining wall block system and connector
US7096634B2 (en) * 2003-10-24 2006-08-29 Innovative Concrete Design, Inc. Block wall system
US7641178B2 (en) * 2004-04-29 2010-01-05 Keystone Retaining Wall Systems, Inc. Column block system
EP1745180A1 (fr) * 2004-04-29 2007-01-24 Keystone Retaining Wall Systems, Inc. Placages pour parois, murs de soutenement et analogues
US8176702B2 (en) * 2004-11-22 2012-05-15 Paul Adam Modular block system
AU2005309711A1 (en) * 2004-11-24 2006-06-01 Contech Technologies, Inc. Retaining wall block with face connection
USD530830S1 (en) * 2005-03-15 2006-10-24 Collison Ryan W Landscaping block
US7934351B2 (en) * 2007-05-09 2011-05-03 Alliance Construction Technologies, Inc. Method of constructing a block wall
US20080277561A1 (en) * 2007-05-11 2008-11-13 Keystone Retaining Wall Systems, Inc. Mold box and method of manufacturing multiple blocks
US7971407B2 (en) * 2007-05-21 2011-07-05 Keystone Retaining Wall Systems, Inc. Wall block and wall block system for constructing walls
WO2008154291A1 (fr) * 2007-06-06 2008-12-18 Keystone Retaining Wall Systems, Inc. Ensemble de coupe de blocs et procédé de production de blocs de murs
AU2008266066A1 (en) * 2007-06-15 2008-12-24 Keystone Retaining Wall Systems, Inc. Mold box and method of manufacturing a block
AU2008265549A1 (en) * 2007-06-21 2008-12-24 Keystone Retaining Wall Systems, Inc. Veneers for walls, retaining walls, retaining wall blocks, and the like
NZ584638A (en) * 2007-10-18 2012-12-21 Keystone Retaining Wall System Retainng wall block with one orthogonal end wall and one end wall tapering from front to back and mold with orthogonal wall located lowermost
NZ584353A (en) * 2007-11-08 2012-06-29 Keystone Retaining Wall System Wall block with weight bearing pads and method of producing wall blocks
US20090151281A1 (en) * 2007-11-20 2009-06-18 Keystone Retaining Wall Systems, Inc. Method of constructing a wall or fence with panels
US20090185870A1 (en) * 2008-01-18 2009-07-23 Shaw Kenneth L Retaining wall block and method of manufacture
WO2009097524A1 (fr) * 2008-01-30 2009-08-06 Keystone Retaining Wall Systems, Inc. Système de blocs comprenant un bloc d'angle et procédé de fabrication d'un bloc
CA134206S (en) * 2008-10-16 2010-03-25 Keystone Retaining Wall System Wall block
CA130214S (en) * 2008-10-16 2010-03-25 Keystone Retaining Wall System Wall block
USD610710S1 (en) * 2008-11-07 2010-02-23 Keystone Retaining Wall Systems, Inc. Wall block
US8568129B2 (en) * 2009-06-03 2013-10-29 Keystone Retaining Wall Systems Llc Floating cut-off bar for a mold box
US20100310695A1 (en) * 2009-06-03 2010-12-09 Keystone Retaining Wall Systems, Inc. Floating cut-off bar and method of use thereof
CA3106531A1 (fr) * 2009-09-29 2011-04-07 Keystone Retaining Wall Systems, Inc. Blocs de paroi, panneaux de placage destines a des blocs de paroi et procede de construction de parois
USD615669S1 (en) * 2009-10-06 2010-05-11 Luciano Caggiano Block structure for retaining wall system
AU2011223600B2 (en) * 2010-03-04 2016-02-25 Keystone Retaining Wall Systems, Inc. Retaining wall
USD663858S1 (en) * 2010-07-20 2012-07-17 Keystone Retaining Wall Systems Llc Landscaping block
USD645575S1 (en) * 2010-08-04 2011-09-20 Pacific Coast Building Products, Inc. Retaining wall block

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1287055A (en) * 1918-03-15 1918-12-10 Arthur H Lehman Building-block machine.
WO1994023136A2 (fr) * 1993-03-31 1994-10-13 The Reinforced Earth Company Construction a murs de retenue en blocs modulaires et elements constitutifs
US5702208A (en) * 1994-06-02 1997-12-30 Hilfiker; William K. Grid-locked block panel system
US5711130A (en) * 1995-11-17 1998-01-27 Shatley; Josh L. Building block
US20030009970A1 (en) * 2001-07-12 2003-01-16 Macdonald Robert A. Multi-channel retaining wall block and system
US20050016106A1 (en) * 2003-07-21 2005-01-27 Dawson William B. Method of making wall block
US20090103988A1 (en) * 2006-03-31 2009-04-23 Holmes Solutions Limited Retaining wall and blocks for the formation thereof

Also Published As

Publication number Publication date
US20110217127A1 (en) 2011-09-08
NZ601997A (en) 2013-12-20
CA2790962A1 (fr) 2011-09-09
WO2011109360A2 (fr) 2011-09-09
EP2542723A2 (fr) 2013-01-09
AU2011223800A1 (en) 2012-09-13

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