Sleeved Or Telescoped At Joint Patents (Class 404/60)
  • Patent number: 11680376
    Abstract: An edge protection system for use with concrete flooring, including a first part for coupling to an edge portion of a first concrete flooring panel and a second part for coupling to an opposed edge portion of a second, neighbouring, concrete flooring panel, and a support foot for supporting the system relative to a ground surface, wherein the first part has a pair of vertically opposed longitudinal rails, and the support foot has an engagement formation which has an unlocked orientation for inserting the formation between the opposed rails to abut against the first part and a rotated, locked orientation wherein the formation is locked by the rails against lateral withdrawal from the first part.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: June 20, 2023
    Assignee: Illinois Tool Works Inc.
    Inventors: Thomas James Murdoch, Greg Stephen Mason
  • Patent number: 10995457
    Abstract: A modular pavement slab comprises a body, a strain sensor array, and a sensor processor. The body includes a top surface, a bottom surface, and four side surfaces. The modular pavement slab is configured to be coupled to at least one other modular pavement slab via connectors along at least one of the side surfaces. The strain sensor array is retained within the body and is configured to detect a plurality of strains on the body resulting from vehicular traffic across the top surface of the body. The sensor processor is in communication with the strain sensor array. The sensor processor is configured to communicate input signals to the strain sensor array, receive output signals from the strain sensor array, and determine a plurality of time-varying strain values, each strain value indicating a strain experienced over time by a successive one of a plurality of regions of the body.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: May 4, 2021
    Assignee: Integrated Roadways, LLC
    Inventor: Tim Sylvester
  • Patent number: 10458453
    Abstract: A mechanical connector for securing a dowel rod to a frame of a dowel bar assembly as well as a dowel bar assembly are detailed. Each embodiment of the mechanical connector includes a portion to receive the dowel bar. A second portion of the mechanical connector engages the frame of the dowel bar assembly. A third portion of the mechanical connector engages a separate part of the frame further stabilizing the mechanical connector and frame.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: October 29, 2019
    Assignee: Construction Materials, Inc.
    Inventors: Richard Galligan, Duane A. Jaeb
  • Patent number: 10006174
    Abstract: A pavement slab includes a top surface, a bottom surface opposite the top surface, first and second longitudinal side surfaces, each of which extends from the top surface to the bottom surface, and first and second transverse side surfaces, each of which extends from the top surface to the bottom surface. At least one transverse tube is positioned intermediate the top surface and the bottom surface and extends from an inlet at the first longitudinal side surface to a second end intermediate the first and second longitudinal side surfaces. The at least one transverse tube is sized and shaped to convey a binder material. At least one vertical tube extends from each of the at least one transverse tube to the bottom surface. The at least one vertical tube is sized and shaped to convey the binder material.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: June 26, 2018
    Assignee: Jersey Precast Corporation, Inc.
    Inventor: Amir Ulislam
  • Patent number: 9617694
    Abstract: A dowel placement system including a fastener configured to be engageable with a form, and a radially compressible bushing coupled to the fastener and defining an adjustable outer diameter. The system further includes an elongate dowel sleeve having opposed proximal and distal end portions, and an axial opening having an inner diameter and extending into the dowel sleeve from the proximal end portion to the distal end portion. The bushing is insertable within the axial opening of the dowel sleeve, and the bushing and dowel sleeve are configured such that insertion of the bushing within the dowel sleeve causes the outer diameter of the bushing to compress and conform to the inner diameter of the dowel sleeve and to create a friction force between the bushing and the dowel sleeve to mitigate movement of the dowel sleeve relative to the bushing during formation of the concrete structure.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: April 11, 2017
    Assignee: Shaw & Sons, Inc.
    Inventor: Ronald D. Shaw
  • Patent number: 9611645
    Abstract: A method of tensioning concrete is disclosed.
    Type: Grant
    Filed: December 27, 2014
    Date of Patent: April 4, 2017
    Inventor: Dennis J. Dupray
  • Patent number: 8840336
    Abstract: A pre-fabricated pavement slab installation and replacement system is provided. The system includes a connector having an axial opening therethrough and engagement surface within the opening. The system further includes a pavement slab and an adjacent pavement slab, wherein a portion of the connector is embedded in the pavement slab and a remaining portion of the connector is exposed. The adjacent pavement slab has an interconnection slot, that can cover the remaining portion of the exposed connector. The system further provides that under the condition that the pavement slab and the adjacent pavement slab are cut apart, the connector is cut into a first half and a second half, wherein the first half of the connector contains the first engagement component and the second half of the connector contains the second engagement component. The first half of the connector can be subsequently removed by engaging the engagement surface.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: September 23, 2014
    Assignee: Fort Miller Co., Inc.
    Inventor: Peter Smith
  • Patent number: 8496398
    Abstract: A rebar sleeve device comprising a tubular unit with an opening at least one end thereof for receipt of a rebar dowel is described. The tubular unit is typically positioned horizontally and can be elevated by a back extension component and a front extension component secured to the base unit. The front extension component comprises an opening through which the rebar dowel is inserted. The opening of the front extension component comprises a protective covering. The protective covering prevents concrete from filling in the opening, but allows for the insertion of a rebar dowel. A connection component connects a plurality of the rebar sleeve devices together to form a single unit.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: July 30, 2013
    Inventor: Michael DiPietro
  • Patent number: 8465222
    Abstract: A tapered dowel bar for transferring loads across a joint between adjacent concrete slabs is disclosed. The dowel tapers from one relatively wide cross section into one or more relatively narrow ends. The shape of the dowel is optimized to provide the highest amount of steel along the joint where the loads are highest. The tapered dowel is embedded in one or both sides into a socket assembly that connects the dowel to essentially planar top and bottom surfaces of a pocket former embedded in the concrete. The load transfer assembly restricts any relative vertical displacement between the first and second slabs. The socket assembly embedded in the pocket former or equipped with compressible material accommodates relative horizontal movement between adjacent slabs in directions essentially parallel and perpendicular to the joint.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: June 18, 2013
    Inventors: Ziad Ghauch, Hadi Ghauch
  • Patent number: 8381470
    Abstract: A tapered load plate transfers loads across a joint between adjacent concrete floor slabs. The top and bottom surfaces may taper from approximately 4 inches wide to a narrow substantially pointed end over a length of approximately 12 inches. The tapered load plate accommodates differential shrinkage of cast-in-place concrete slabs. The tapered load plate may comprise a main plate and at least one extension. When adjacent slabs move away from each other, the narrow end of the tapered load plate moves out of the void that it created in the slab thus allowing the slabs to move relative to one another in a direction parallel to the joint. Tapered load plates may be assembled into a load-plate basket with the direction of the taper alternating from one tapered load plate to the next to account for off-center saw cuts.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: February 26, 2013
    Inventors: Russell Boxall, Nigel K. Parkes
  • Patent number: 8302359
    Abstract: An improved joint edge assembly, of the type used in the construction of concrete slabs, is disclosed. The assembly comprises a longitudinal joint rail, preferably of steel, which is supported off the ground by formwork. The joint rail comprises first and second joint edge members that are connected to each other by interference-type connectors with self-release elements. A plurality of studs extends downward and outward from each of the joint edge members into the concrete slabs provide a positive mechanical connection between the slab and the joint rail. As the concrete shrinks during hardening, the self-release elements of the interference-type connectors allow the joint to freely open. The joint edge assembly thus provides a self-releasing joint between adjacent slab sections, and protects the edges of the adjacent slab sections from damage. A dowel aligner may also be integrated into the assembly, to allow proper positioning of dowels within the slab.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: November 6, 2012
    Inventors: Russell Boxall, Nigel A. Parkes, Patrick Harrison
  • Patent number: 8206059
    Abstract: A load transfer apparatus accommodates movement between adjacent concrete slabs. The load transfer apparatus includes a spine in a form of an elongated hinge having a longitudinal axis A. A first dowel and a second dowel project radially from the spine and are located at two spaced points along said longitudinal axis A.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: June 26, 2012
    Inventors: Herbert F. Southgate, Kamyar C. Mahboub, Alireza Zeinali
  • Patent number: 8112959
    Abstract: A device equips an expansion joint between slabs in building constructions, in particular concrete slabs. According to a first embodiment, the device is made up of two profiles (3,4) that fit together in such a way that the elements passing through the joint between the slabs are discontinuous and have a bracket shape anchored by plate dowel anchors. According to a second embodiment, the device has a single profile, the lower part of which is bent alternately in one slab part and the other on each side of the joint.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: February 14, 2012
    Assignee: Plakabeton S.A.
    Inventor: Pierre Michiels
  • Patent number: 8007199
    Abstract: Disclosed are a concrete dowel placement devices and a method of utilizing the same. A metallic stud is driven, screwed, or otherwise attached to a form. The stud may be a unitary structure, or may be a hollow tube with conventional fastening means such as nails and screws extending through and holding the hollow tube to the form. A cover having an interior compartment substantially equal in diameter to the stud is slidably placed thereon, and a first enclosed area is developed with a plurality of forms. Concrete is poured into the first enclosed area, and upon curing, the form and the stud are removed, leaving the cover embedded in the concrete. A metallic dowel is inserted into the cover, and a second enclosed area is developed with like configured forms. The metallic dowel extends into the second enclosed area.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: August 30, 2011
    Assignee: Shaw & Sons, Inc.
    Inventors: Lee A. Shaw, Ronald D. Shaw
  • Patent number: 7967528
    Abstract: A dowel sleeve has a tubular body with a mounting assembly at one end for releasable connection to a construction plate, and a leg support engagable at the other end for adjustable support. The construction plate has spaced non-circular holes. A first flange of the mounting assembly has a complementary profile, of smaller dimensions, to the non-circular holes, while a second flange has a similar profile, of larger dimensions, with its major-axis non-aligned with the major-axis of the first flange. The first flange is inserted through one of the non-circular holes, and the tubular body is rotated so the first and second flanges engage opposed faces of the construction plate. The leg support has a spigot engagable in the tubular body, the exterior of which is engaged by an abutment face. The effective length of the support leg is adjustable by selectively detaching one or more leg member segments, each provided with a disc-like base member.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: June 28, 2011
    Assignee: Connolly Key Joint Pty Ltd.
    Inventors: John Mercer, Mark Anthony Connolly
  • Patent number: 7874762
    Abstract: Disclosed are a concrete dowel placement devices and a method of utilizing the same. A metallic stud is driven, screwed, or otherwise attached to a form. The stud may be a unitary structure, or may be a hollow tube with conventional fastening means such as nails and screws extending through and holding the hollow tube to the form. A cover having an interior compartment substantially equal in diameter to the stud is slid ably placed thereon, and a first enclosed area is developed with a plurality of forms. Concrete is poured into the first enclosed area, and upon curing, the form and the stud are removed, leaving the cover embedded in the concrete. A metallic dowel is inserted into the cover, and a second enclosed area is developed with like configured forms. The metallic dowel extends into the second enclosed area.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: January 25, 2011
    Assignee: Shaw & Sons, Inc.
    Inventors: Lee A. Shaw, Ronald D. Shaw
  • Patent number: 7748928
    Abstract: A load plate sleeve assembly for maintaining a load plate in position between adjacent concrete slabs and facilitating controlled lateral movement of the load plate includes a housing and an insert clip coupled to the housing. The housing includes a top wall, a bottom wall, opposing side walls extending between the top and bottom walls, and an end wall extending between the top and bottom walls, and between the side walls. The walls define an internal cavity, and the housing includes a cavity access opening. The insert clip includes a opposing side walls having a first end and a second end. The insert clip also includes an end wall extending between the side walls, a plurality of deformable centering fingers extending from the side walls, and a collapsible diamond shaped center support extending from the end wall. The insert clip is positioned inside the internal cavity of the housing.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: July 6, 2010
    Assignee: Greenstreak Group, Inc.
    Inventors: Michael Estes, James Vemmer
  • Patent number: 7736088
    Abstract: A generally rectangular load plate for transferring loads between a first cast-in-place slab and a second cast-in-place slab separated by a joint. The load plate being adapted to transfer load between the first and second slabs directed essentially perpendicular to the intended upper surface of the first slab, and allowing relative movement between adjacent concrete slabs along the joint between the slabs with minimal joint opening between the slabs. A pocket former embedded within the first slab may also be included to position the load plate and create void space on the sides of the load plate to permit the relative movement. A compressible material along the side of the load plate may also be used to permit the relative movement. Neither the void space created by the pocket former nor the compressible material are dependent upon the existence of a significant gap in the joint between the concrete slabs.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: June 15, 2010
    Inventors: Russell Boxall, Nigel Parkes
  • Patent number: 7716890
    Abstract: A tapered load plate transfers loads across a joint between adjacent concrete floor slabs. The top and bottom surfaces may taper from approximately 4 inches wide to a narrow substantially pointed end over a length of approximately 12 inches. The tapered load plate accommodates differential shrinkage of cast-in-place concrete slabs. When adjacent slabs move away from each other, the narrow end of the tapered load plate moves out of the void that it created in the slab thus allowing the slabs to move relative to one another in a direction parallel to the joint. Tapered load plates may be assembled into a load-plate basket with the direction of the taper alternating from one tapered load plate to the next to account for off-center saw cuts. A tapered load plate and an end cap may be used to provide load transfer across an expansion joint.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: May 18, 2010
    Inventors: Russell Boxall, Nigel K. Parkes
  • Patent number: 7632037
    Abstract: A dowel includes a corrosion-resistant sleeve, and a rod positioned within the sleeve. A sealant connects the corrosion-resistant sleeve and the rod. A method for constructing a dowel includes positioning a rod within a corrosion-resistant sleeve, and sealing the rod with respect to the corrosion-resistant sleeve.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: December 15, 2009
    Assignee: Construction Materials, Inc.
    Inventor: Mark Brinkman
  • Patent number: 7604432
    Abstract: A disc dowel system is interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a pocket former having a rib insert disposable therewithin for engaging the sides of a dowel plate. The pocket former has a vertical base flange with a pair of fastener-receiving bosses for securing the pocket former to a concrete form. The pocket former has a horizontally extending interior compartment with an open straight side that is aligned with the pour joint and is positioned within the first pour. The dowel plate has an orthogonal shape with an embedded portion and a slidable portion. The embedded portion is rigidly encapsulated within the second pour. The slidable portion is slidably disposed within the pocket former such that the dowel plate permits relative horizontal movement of the first and second pours while restricting relative vertical movement thereof.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: October 20, 2009
    Assignee: Shaw & Sons, Inc.
    Inventors: Lee A. Shaw, Ronald D. Shaw
  • Patent number: 7481031
    Abstract: A tapered load plate transfers loads across a joint between adjacent concrete floor slabs. The top and bottom surfaces may taper from approximately 4 inches wide to a narrow substantially pointed end over a length of approximately 12 inches. The tapered load plate accommodates differential shrinkage of cast-in-place concrete slabs. When adjacent slabs move away from each other, the narrow end of the tapered load plate moves out of the void that it created in the slab thus allowing the slabs to move relative to one another in a direction parallel to the joint. Tapered load plates may be assembled into a load-plate basket with the direction of the taper alternating from one tapered load plate to the next to account for off-center saw cuts. A tapered load plate and an end cap may be used to provide load transfer across an expansion joint.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: January 27, 2009
    Inventors: Russell Boxall, Nigel K. Parkes
  • Patent number: 7441985
    Abstract: First and second cast-in-place concrete slabs are maintained in alignment by cutting a semi-circular groove in an edge surface of the first formed slab, positioning a flat rectangular dowel within the groove so that the dowel extends outwardly from the edge surface, and then casting the second slab against the edge surface to embed the dowel within the second slab. A gasket is engaged with the dowel to seal the groove against the intrusion of fluid concrete as the second cast-in-place. The gasket also serves to space the dowel from the groove to accommodate limited lateral movement of the dowel and groove relative to one another.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: October 28, 2008
    Assignee: MMI Management Services LP
    Inventors: David L. Kelly, Scott L. Collins
  • Patent number: 7404691
    Abstract: An apparatus for combining adjacent concrete slabs including a dowel, an end cap, and a side frame. The end cap has a hood defining a curved channel extending at least partially around a dowel receiving end. The side frame has at least one wire received in the curved channel. Also, an end cap having an integrally formed supporting portion including first and second wire supports for supporting substantially parallel side frame cross wires. Also, an end cap including first and second sleeves positioned along opposing tangents of the outer peripheral surface of the end cap for receiving differing portions of a side frame, and further including a resilient protrusion for receiving a further differing portion of the side frame.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: July 29, 2008
    Assignee: Dayton Superior Corporation
    Inventors: Clifford D. Bennett, Kenneth Lee
  • Patent number: 7381008
    Abstract: Disclosed is a disc dowel system interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a positioner bracket, a pocket former and a dowel plate. The positioner bracket has a vertically disposed base flange and a horizontally disposed plate portion extending therefrom. The base flange is rigidly attachable to a concrete form. The pocket former has a horizontally extending interior compartment with an open, generally straight side and an arch-shaped compartment perimeter extending therefrom. The straight side is aligned with the pour joint. The pocket former is positioned within the first pour by the positioner bracket. The dowel plate has a generally rounded shape with an embed portion and a slidable portion.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: June 3, 2008
    Inventors: Lee A. Shaw, Ronald D. Shaw
  • Patent number: 7338230
    Abstract: A disc dowel system is interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a positioner bracket, a pocket former and an orthogonally shaped dowel plate. The positioner bracket has a vertically disposed base flange and a horizontally disposed plate portion extending therefrom. The base flange is rigidly attachable to a concrete form. The pocket former has a horizontally extending interior compartment with an open, generally straight side and a compartment perimeter. The straight side is aligned with the pour joint. The pocket former is positioned within the first pour by the positioner bracket. The dowel plate has an orthogonal shape with an embedded portion and a slidable portion.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: March 4, 2008
    Assignee: Shaw & Sons, Inc.
    Inventors: Lee A. Shaw, Ronald D. Shaw
  • Patent number: 7314333
    Abstract: A disc dowel system is interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a positioner bracket, a pocket former and an orthogonally shaped dowel plate. The positioner bracket has a horizontal plate portion and a vertical base flange that is rigidly attachable to a concrete form. The pocket former has a horizontally extending interior compartment with an open straight side that is aligned with the pour joint. The pocket former is positioned within the first pour by the positioner bracket. The dowel plate has an orthogonal shape with an embedded portion and a slidable portion. The embedded portion is rigidly encapsulated within the second pour. The slidable portion is slidably disposed within the pocket former such that the dowel plate permits relative horizontal movement of the first and second pours while restricting relative vertical movement thereof.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: January 1, 2008
    Assignee: Shaw & Sons, Inc.
    Inventors: Lee A. Shaw, Ronald D. Shaw
  • Patent number: 6962026
    Abstract: An expansion joint cover (10) comprises a first plate (18) hingedly attached to a first surface (14) of an expansion joint (12), a second plate (20) hingedly attached to the first plate (18), and a housing (26) fixedly secured to a second surface (16) of the expansion joint (12). During installation, a front plate (52) of the housing (26) can rotate about a hinge (58) to allow the second plate (20) to be installed within the housing (26). In use, the second plate (20) slides within the housing (26) to accommodate variations in separation distance and vertical offset between the two surfaces (14,16). Two hinges (36,44) accommodate variations in torsion between the two surfaces (14,16). The combination of the second plate (20) sliding within the housing (26) and the two hinges (36,44) accommodates variations in lateral offset between the two surfaces (14,16).
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: November 8, 2005
    Assignee: Balco, Inc.
    Inventors: Ronny L. Knak, Dean V. Balocca, Johnnie D. Hilburn, Jr.
  • Patent number: 6926463
    Abstract: Disclosed is a disc dowel system interposed between adjacent first and second concrete pours defining a pour joint therebetween. The disc dowel system comprises a positioner bracket, a pocket former and a dowel plate. The positioner bracket has a vertically disposed base flange and a horizontally disposed plate portion extending therefrom. The base flange is rigidly attachable to a concrete form. The pocket former has a horizontally extending interior compartment with an open, generally straight side and an arch-shaped compartment perimeter extending therefrom. The straight side is aligned with the pour joint. The pocket former is positioned within the first pour by the positioner bracket. The dowel plate has a generally rounded shape with an embedded portion and a slidable portion.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: August 9, 2005
    Inventors: Lee A. Shaw, Ronald D. Shaw
  • Patent number: 6502359
    Abstract: An expendable concrete dowel placement apparatus comprising a concrete form and a dowel holder capable of quickly positioning a dowel perpendicular to the surface of the concrete form, thereby allowing the finished concrete slab to expand and contract relative to a control joint without the dowel causing the concrete to yield. The concrete form maintains a plurality of square or rectangular apertures which receive the dowel bar holders. Each dowel bar holder maintains a plurality of retention clips and a flange located at its open proximal end which positively positions the dowel bar holder within the apertures of the concrete form in a position perpendicular to the front surface of the central vertical member of the concrete form. The concrete form is composed of a non-typical shape which allows the control joint to transfer loads to adjoining concrete slabs through the length of the control joint.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: January 7, 2003
    Assignee: Bometals, Inc.
    Inventor: Todd Rambo
  • Patent number: 6432389
    Abstract: Topically applicable cosmetic/dermatological compositions well suited for the UV-photoprotection of human skin, hair and/or scalp, contain (a) an effective UV-photoprotecting amount of at least one UV-A and/or UV-B sunscreen and (b) an amount of a methyl methacrylate crosspolymer effective to, on application of the composition, reduce the greasiness/diffusion and improve the dryness thereof, formulated into (c) a topically applicable, cosmetically/dermatologically acceptable vehicle, diluent or carrier therefor.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: August 13, 2002
    Assignee: Societe L'Oreal
    Inventors: Isabelle Hansenne, Donald W. Rick
  • Patent number: 5980152
    Abstract: A highway coupling apparatus includes an expansion joint template, a plurality of rods, and a plurality of pipes. The template is positioned between longitudinal forms of a highway lane, creating two sections. After positioning the reinforcement bar in each section, the rods are extended through the expansion joint template and movably coupled to the pipes located in the second section. The highway coupling apparatus also includes a movement joint to couple adjacent lanes of the highway. The movement joint includes a plurality of eye bolts, L-bolts, movement joint templates, and a movement joint form. The eye bolts and L-bolts partially extend from the respective first and second lanes into the movement joint templates and are coupled. The movement joint templates are coupled to the movement joint form and prevent concrete from entering the eye bolt eyes during fabrication.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: November 9, 1999
    Inventor: Amos Rehberger
  • Patent number: 5911538
    Abstract: A transverse force rod having at least one bearing cage disposed on both sides of a joint. Each bearing cage has a front plate and a trapezoidally shaped steel strip which is welded to the front plate. The transverse force rod is fixedly supported in one bearing cage, and a transverse force rod bearing sleeve is fixedly supported in the front plate of another bearing cage. The transverse force rod or the transverse force rod bearing sleeve penetrates the front plate and the steel strip of the one bearing cage or the other bearing cage.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: June 15, 1999
    Assignee: Pecon AG
    Inventors: Erich Muller, Stephane Nancoz
  • Patent number: 5870869
    Abstract: A yielding tie bar transfers load stress across a joint between adjacent concrete slabs, and accommodates internal movement of the slabs to reduce cracking. A combination of adjacent slabs have a cracking strength and comprise a plurality of such tie bars. A yieldable strip made of yieldable metal is welded to the bar and mounted near each end of the bar perpendicular to the bar axis. The strip has a predetermined yield strength (a) sufficient to restrain slab movement in a direction which opens the joint, and (b) yielding in the metal thereof to an extent that will prevent substantial cracking of the slabs. The bar is preferably rectangular and further comprises a resilient facing attached to at least one face to accommodate movement perpendicular to the facing. As preferred, the bar yield strength is sufficient to restrain slab movement at forces between the slabs below 80% of the slab cracking strength, and insufficient to restrain slab movement above at least 80% of the slab cracking strength.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: February 16, 1999
    Inventor: Ernest K. Schrader
  • Patent number: 5674028
    Abstract: In the construction of a concrete surface formed by a plurality of slabs, sleeves are inserted into a slab while the concrete is still plastic. The slab is allowed to harden. Dowel bars are then inserted into the sleeves to provide load distribution among the slabs. Advantageously, the dowel bars are inserted into a slab only when construction of adjacent slabs is ready to proceed.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: October 7, 1997
    Inventor: Kenton Neal Norin
  • Patent number: 5600860
    Abstract: A dilation joint adjustably interconnecting the structural edges of a bridge opening. The dilation joint includes two continuity metallic plates in a transit plane, connected to the structural edges of the opening and to lower structural elements in such a way that a recess is formed on each side of the opening, each recess formed between one of the metallic plates and its corresponding lower structural element. A support structure spans the opening, supported by both structural edges. The support structure is slidably received in a first one of the recesses, and it slidably supports a deformable transit plane, which is slidably received in the other of the recesses.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: February 11, 1997
    Assignee: T.I.S. S.p.A.
    Inventor: Roberto Marnetto
  • Patent number: 5586834
    Abstract: A joint structure for coupling adjacent precast concrete pavement slabs which is excellent in execution process for pavement, particularly is capable of ensuring the sliding of a reinforcing bar. A first horizontal hole for accommodating a reinforcing bar thereinto is provided at an end surface of the first precast concrete pavement slab. A second horizontal hole for inserting a distal end of the reinforcing bar is provided at an end surface of a second precast concrete pavement slab. Both horizontal holes have the same diameters, opposite in position to each other. A guide passage is defined through the second precast concrete pavement slab for its upper surface to communicate with its inner end surface. A hauling member is connected to a distal end of the reinforcing bar so that it may be inserted into the guide passage.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: December 24, 1996
    Assignee: Otaru Development and Construction Department of Hokkaido Development Bureau
    Inventor: Tomoyuki Tsuji
  • Patent number: 5487249
    Abstract: A concrete dowel placement apparatus comprising a base member which is rigidly attachable to a concrete form. Connected to the base member is an elongate, tubular dowel receiving sheath which defines an interior compartment extending axially therein. The dowel receiving sheath is connected to the base member in a manner wherein a dowel rod of predetermined size is extensible into and longitudinally slidable within the interior compartment thereof.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: January 30, 1996
    Inventors: Ronald D. Shaw, Lee A. Shaw
  • Patent number: 5051024
    Abstract: A sliding closure for a roadway expansion joint crossing has on the first part of the roadway (1) a sliding face (5) with a curved segment (7) and an adjoining level segment (8) running parallel to the driving surface (4). Resting flatly on this sliding face is a sliding plate (10) of elastomeric material and of uniform thickness. The sliding plate (10) is bolted onto the second part of the roadway (2) and bridges with a level section (12) a gap (11) between the first and second parts of the roadway (1, 2). In the level section (12), the sliding plate (10) is reinforced by a flexurally rigid steel plate (14). In the section resting on the curved segment (7), the reinforcement of the sliding plate (10) consists of a thin, flexible plate (15). Fastened on the first part of the roadway (1) is a tongue plate (32), which overlaps the sliding plate.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: September 24, 1991
    Inventor: Robert Warthmann
  • Patent number: 4648739
    Abstract: A non-corrosive load transfer cell assembly for transverse joints in concrete pavement structures including support chairs, a pair of plastic walls abutting the edges of the concrete joints, a drainage trough for continuous drainage flow, a joint forming guide to wet form the upper portion of the joint through the concrete material, and compressed elastomers which space the wall liners apart and cooperate with threaded compression means to provide a load transfer supplement to steel dowels which pass through the elastomers.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: March 10, 1987
    Inventor: Bernard D. Thomsen
  • Patent number: 4578916
    Abstract: The element comprises a socket and a bar slidingly insertable into the opening of the socket. Disposed around and spaced from both the socket and the bar are at least two closed loops each, of generally rectangular shape and made from reinforcing rods. The loops are secured to the socket and the bar, respectively, in one case by welding, in another case by means of a holder. Because they are symmetrically spaced from the socket and the bar, they ensure good distribution of pressure within the concrete.
    Type: Grant
    Filed: March 16, 1984
    Date of Patent: April 1, 1986
    Assignee: Peter Fankhauser
    Inventor: Heinz Witschi
  • Patent number: 4522531
    Abstract: A transverse concrete pavement joint cell including a pair of plastic walls abutting the edges of the concrete joints. A seamless drainage gutter extends longitudinally between said plastic walls to the edges of the pavement. Blocks of compressible elastomers between said plastic walls absorb expansion of the concrete. The cell includes a base and stabilizing ties secured to a conventional dowel bar assembly.
    Type: Grant
    Filed: May 18, 1983
    Date of Patent: June 11, 1985
    Inventors: Bernard D. Thomsen, Kenneth L. Thomsen
  • Patent number: 4516876
    Abstract: Expansion joints for concrete highways consisting of precast beams with preformed joints of expansion joint material. The beams are laid crosswise of a strip of highway before pouring the concrete and provide expansion joints which are not affected by the skill of the workmen.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: May 14, 1985
    Inventor: Harry O. Wicks
  • Patent number: 4449844
    Abstract: A device for transferring vertical shear stress and bending moments across transverse joints in concrete pavement slabs and the like, and for simultaneously controlling the joint gap width. A dowel is formed from a continuous length of steel bar, treated to cause its outer ends to bond to concrete and its central portion treated to prevent bonding to concrete. The outer ends of each bar is formed to permit the center portion to be disposed near either the top surface or bottom surface of the slab sections and the outer ends along the neutral axis of the slab sections. The bars are used in pairs with one center portion adjacent the top surface and the other one adjacent the bottom surface. A multiplicity of such dowels is embedded in the concrete of a continuously-poured concrete slab aligned with the roadway and in a spaced relationship across the slab. The concrete is grooved before curing across the slab and over the central portions of the dowels.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: May 22, 1984
    Inventor: Torbjorn J. Larsen
  • Patent number: 4397579
    Abstract: An expansion joint and seal structure for the variable width space between roadway, bridge or like sections subject to expansion and contraction is provided in the form of an elongate elastomer member having spaced transverse passages of generally rectangular cross section with rounded corners in which metal bars of like cross section but shorter length are inserted, both the passages and bars have cooperating indexing devices which center the bars in each passage spaced equidistant from the ends thereof so as to maintain them over the space between the roadway, bridge or like sections.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: August 9, 1983
    Assignee: Columbia Chase Corporation
    Inventors: Gerald L. Goldman, Joseph W. Gallagher, William A. Merlack
  • Patent number: 4353666
    Abstract: A first elongated steel frame has a dowel mounted thereon at right angles. The dowel projects through an aperture in a compressible filler board thence through a registering opening in a second elongated steel frame. The long dimensions of the two frames are parallel and each frame abuts an opposite surface of the filler board. A cap-like shield covers the free end of the dowel with end clearance to accommodate longitudinal thermal expansion and contraction. The two steel frames are free to move toward and away from each other but are constrained to move in unison in a direction perpendicular to the dowel. By bonding each frame to a respective concrete slab of a pair of adjoining slabs with the filler board co-planar with the joint, the slabs partake of the same freedom of motion in one direction and the same restraint in the other two directions.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: October 12, 1982
    Inventor: Reinard W. Brandley
  • Patent number: 3972640
    Abstract: A highway joint system, and the method of forming the same, wherein bars are employed between adjacent concrete highway sections having obliquely disposed end joints imposing a biasing force upon the sections during the occurrence of section lateral displacement due to expansion. The joint system utilizes biasing bars which may employ torsion forces for realigning the highway sections after expansion thereof, and the system contemplates the utilization of a tongue and groove interconnection in conjunction with the bars to prevent "buckling" and other misalignment at concrete highway joints. A V-shaped divider plate is employed to define the tongue and groove relationship, and this plate supports the biasing bars, and is supported by a framework capable of releasable attachment to the bars.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: August 3, 1976
    Inventor: Raphael W. Miller