Reciprocating Patents (Class 404/120)
  • Patent number: 10156049
    Abstract: The modular screed plate assembly and method has a road paver/finisher, a structural/conductor plate and modular screed plates. The road paver/finisher has a paver under side, a power source and a heating element, for heating the modular screed plates. The modular screed plates have coupling elements, and retainer quick-connect/releases, and align as a modular screed plate array, providing a tensionally yielding gap allowing the modular screed plate array to absorb pressures from paving operations. The structural/conductor plate couples with the coupling elements and has screed plate retaining locks to securely receives the retainer quick-connect/releases, in order to secure itself to the modular screed plates. The structural/conductor plate receives heat directly from the heating element, and provides indirect heat to the modular screed plate array.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: December 18, 2018
    Inventors: Stuart Anthony Frost, David Michael Frost, Jr.
  • Patent number: 9028168
    Abstract: A concrete finishing machine includes a mobile frame supported above the slab on front and rear wheels with at least one screed roller and a plurality of vibrators are suspended from the frame between the front and rear wheels. The front and rear wheels are rotatable at least ninety degrees between a longitudinally directed traveling orientation and a laterally directed concrete finishing orientation. The front and rear wheels are driven and steerable so that the mobile frame may travel longitudinally down a lane of a road, and then upon pivoting of the wheels, move laterally over a hole in an adjacent lane having uncured concrete to be finished by the finishing machine.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: May 12, 2015
    Inventor: Ronald A. Knapp
  • Patent number: 8827594
    Abstract: A concrete floor leveling device includes a transmission device and a power source is located in a body and connected to wheels which are connected to the body. A connection unit is connected to the body and a blade is connected to the body by the connection unit. The power source outputs a stable power to drive the blade to level the concrete floor and to ensure that the blade levels the concrete floor with even force.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: September 9, 2014
    Inventor: Ming-Cheng Pai
  • Patent number: 8366345
    Abstract: A powered screed machine comprising means to drive a screed blade and means to power machine travel. The machine includes a pair of elongated modules disposed perpendicular to each other whereby a reciprocating weight within one of the modules causes forward and rearward movement of the machine and a reciprocating weight in the other module causes vibratory movement of the screed blade to groom the surface of freshly poured concrete.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: February 5, 2013
    Inventor: Henry Copeland
  • Patent number: 7854565
    Abstract: A method of establishing a desired grade of an uncured concrete surface or subgrade surface includes providing a wheeled apparatus having a wheeled support and a plow assembly, which may include a plow member for establishing the desired grade and/or a vibrating member for vibrating and smoothing the concrete. The down pressure of the plow assembly may be adjusted when the wheeled support is moved in a rearward direction. The elevation of the plow member may be controlled when a direction signal is indicative of the wheeled support stopping and/or moving in the forward direction. The rearward speed of the wheeled support may be reduced in response to a detection of a surface irregularity of the subgrade, and the frame portion and/or the plow assembly may be controlled to substantially maintain the plow assembly at a desired orientation when the wheel engages the detected surface irregularity.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: December 21, 2010
    Assignee: Somero Enterprises, Inc.
    Inventors: Philip D. Halonen, Russ E. Stein, Mark A. Pietila, Michael R. Keranen, Carl B. Kieranen
  • Patent number: 7311466
    Abstract: A subgrade preparation apparatus for preparing a subgrade surface for concrete to be placed thereon includes a base unit positionable on a support surface adjacent to a targeted subgrade area, an extendable boom extending from the base unit, and a subgrade head assembly adjustably mounted on the extendable boom. The subgrade head assembly includes a framework, a plow and a material moving device for moving material toward at least one side of the subgrade head assembly. The subgrade head assembly includes a plow end plate movably attached at an outer end of the plow and movable to a position where the plow end plate is generally vertical and forms an end portion of the plow to limit plowed material from flowing around the outer end of the plow as the subgrade head assembly is moved over and along the subgrade surface at the targeted subgrade area.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: December 25, 2007
    Assignee: Somero Enterprises, Inc.
    Inventor: Jeffrey W Torvinen
  • Patent number: 6860676
    Abstract: Machine to level materials on the ground, made up of an operative set which includes two parallel telescopic arms (4), which are incorporated in revolving disposition on a bearing structure (1), while on the end of the arms in articulated fastening a horizontal head (6) is situated, foreseen of means to distribute, level and compact materials to be applied on the ground.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: March 1, 2005
    Inventor: Conrado Pont Feixes
  • Patent number: 6672797
    Abstract: A transducer arrangement and method that generates control signals indicating relative positions of the ends of a hydraulically movable tool of a machine. The generated control signals of the present invention are used by a conventional control circuit of the machine to control the ends of the hydraulically movable tool having elevation receivers as an desired mode of operation or when reception by one of the elevational receivers of a elevational reference, which provides an absolute position of the ends of the tool, is interrupted. The conventional control circuit of the machine uses the generated signal of the transducer arrangement of the present invention to maintain a relative elevation position of one side of the tool to the absolute position of the other side of the tool as desired or until both receiver can reacquire the elevational reference.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: January 6, 2004
    Assignee: Trimble Navigation Limited
    Inventors: Mark Eugene Zachman, Jerald Wayne Yost
  • Publication number: 20020044832
    Abstract: A powered inertia propelled screed for leveling, smoothing and spreading material having a power source, motor pulley, motor belt, power reduction pulley, power reduction belt, transfer axle, second power reduction pulley, continuous belt, irregular shaped pulley, idler pulley, arm, stationary bracket, platform, wheels, tracks, control arms and screed whereby the rotation of the irregular shaped pulley causes the powered inertia propelled screed to move back and forth along the tracks by inertia and wherein the screed is moved back and forth along the material.
    Type: Application
    Filed: August 24, 2001
    Publication date: April 18, 2002
    Inventor: Jerald P. Fix
  • Patent number: 6302619
    Abstract: A powered inertia propelled screed for leveling, smoothing and spreading concrete having a power source, motor pulley, motor belt, power reduction pulley, power reduction belt, transfer axle, second power reduction pulley, continuous belt, irregular shaped pulley, arm, stationary bracket, platform, wheels, tracks, control arms and screed. The rotation of the irregular shaped pulley causes the powered inertia propelled screed to move back and forth along the tracks by inertia and so that the screed is moved back and forth along the concrete.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: October 16, 2001
    Inventor: Jerald P. Fix
  • Patent number: 6264397
    Abstract: A trowel blade assembly for use with a rotary surfacing machine with the assembly consisting of a relatively thick, inflexible trowel blade and a relatively thin, flexible finish blade, wherein the latter is secured with respect to the former such that when in operation on a substantially horizontal working surface, with the blade assembly selectively rotated about a horizontal axis, the finish blade is continuously in contact with the working surface regardless of the consequent variable degrees of tilting of the trowel blade with respect to the working surface.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: July 24, 2001
    Inventor: Charles Majewski
  • Patent number: 6227760
    Abstract: A travel control device for vibrating plate compactor which can easily switch the travel direction of a large sized compactor weighing more than 500 kg by a hydraulic pump circuit having a servo valve to supply pressure from outside for switching the travel direction in order to shift the rotational phase of one of the rotors in the vibration generator. The travel control device receives the mechanical return force from the vibration generator at one end thereof in the cylindrical body and is provided at other end with a piston positioned to receive the pressure oil from an outside hydraulic pump, a push rod to operate said piston inserted into the other end of the body from outside, and a spool for servo valve at the side opposite to the side receiving said mechanical return force of said piston to supply the pressure oil from said hydraulic pump by operating said push rod.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: May 8, 2001
    Assignee: Mikasa Sangyo Co., Ltd.
    Inventors: Takashi Togami, Giichi Tanaka, Hideki Mochiki
  • Patent number: 6223495
    Abstract: A vibrating screed with rollers for use in leveling a concrete pour. The screed comprises an elongate screed member defining opposed first and second ends and extensible between a pair of screed rails. A first and second roller are rotatably mounted to the screed member and protrude from respective ones of the first and second ends thereof. The rollers are rotatably movable along respective ones of the first and second screed rails. The screed additionally may comprise a motor to rotate the rollers and/or vibrate the screed member.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: May 1, 2001
    Inventors: Lee A. Shaw, Ronald D. Shaw
  • Patent number: 6183160
    Abstract: A screeding assembly and method is disclosed for spreading, grading, consolidating and smoothing loose or plastic material such as poured, uncured concrete when the assembly moved over an area of the material. The assembly includes a rotatable auger to move the material laterally across the path of travel, a vibratory screed positioned behind the auger to smooth and finish the material, and an elongated engaging member reciprocated laterally across the path at a position between the auger and vibratory screed to facilitate consolidation of the material. Preferably, a plow/striker is positioned in front of the auger to and remove excess material. The assembly may be mounted on a self-propelled vehicle or other support on a boom for moving the assembly over the material, and is preferably controlled by a laser beam responsive elevation control. A kit for attaching the reciprocating engaging member to an existing screed assembly is also provided.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: February 6, 2001
    Assignee: Delaware Capital Formation, Inc.
    Inventors: John A. Tapio, Nels D. Tapio, Kyle J. Tapio
  • Patent number: 6152647
    Abstract: A screeding assembly and method is disclosed for spreading, grading, consolidating and smoothing loose or plastic material such as poured, uncured concrete when the assembly moved over an area of the material. The assembly includes a rotatable auger to move the material laterally across the path of travel, a vibratory screed positioned behind the auger to smooth and finish the material, and an elongated engaging member reciprocated laterally across the path at a position between the auger and vibratory screed to facilitate consolidation of the material. Preferably, a plow/striker is positioned in front of the auger to and remove excess material. The assembly may be mounted on a self-propelled vehicle or other support on a boom for moving the assembly over the material, and is preferably controlled by a laser beam responsive elevation control. A kit for attaching the reciprocating engaging member to an existing screed assembly is also provided.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: November 28, 2000
    Assignee: Delaware Capital Formation, Inc.
    Inventors: John A. Tapio, Nels D. Tapio, Kyle J. Tapio
  • Patent number: 6129481
    Abstract: A screeding assembly and method is disclosed for spreading, grading, consolidating and smoothing loose or plastic material such as poured, uncured concrete when the assembly moved over an area of the material. The assembly includes a rotatable auger to move the material laterally across the path of travel, a vibratory screed positioned behind the auger to smooth and finish the material, and an elongated engaging member reciprocated laterally across the path at a position between the auger and vibratory screed to facilitate consolidation of the material. Preferably, a plow/striker is positioned in front of the auger to and remove excess material. The assembly may be mounted on a self-propelled vehicle or other support on a boom for moving the assembly over the material, and is preferably controlled by a laser beam responsive elevation control. A kit for attaching the reciprocating engaging member to an existing screed assembly is also provided.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: October 10, 2000
    Assignee: Delaware Capital Formation, Inc.
    Inventors: John A. Tapio, Nels D. Tapio, Kyle J. Tapio
  • Patent number: 6022171
    Abstract: A site preparation/concrete finishing apparatus for operation in an area having a base surface above which concrete reinforcing elements have been positioned prior to pouring of concrete within the area and for use in finishing concrete poured within the area. The site preparation/concrete finishing apparatus comprises a movable vehicle having at least one lift arm, a plurality of specially-tailored wheels for supporting the movable vehicle entirely within the area in continuous contact with the surface and for enabling continuous movement of the movable vehicle relative to the surface absent damage to the concrete reinforcing elements beneath the movable vehicle, and a concrete finishing device connected to the lift arm for fine grading and leveling of the area and for screeding and floating concrete poured within the area. Each wheel of the plurality of wheels includes a hub and a plurality of members extending radially therefrom.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: February 8, 2000
    Assignee: Armando G. Munoz
    Inventor: Armando G. Munoz
  • Patent number: 5967695
    Abstract: A vehicle for repairing a damaged road surface by filling depressions within the road surface with a filling material has, in a direction of travel, a heating and scraping unit for removing excess road surface material from the road surface. It further has a depositing device for a filling material. A first dynamic compacting device is arranged downstream of depositing device for compacting the filling material to a level higher than a level of an adjacent undamaged area of the road surface. A doctor blade unit is connected to the depositing device so as to act downstream of the first dynamic compacting device onto the filling material for removing excess filling material. The doctor blade unit pivots horizontally in a direction perpendicular to the direction of travel. The doctor blade unit is vertically adjustable relative to the first dynamic compacting device and the depositing device. A second dynamic compacting device is arranged downstream of the doctor blade unit.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: October 19, 1999
    Assignee: Wacker Werke GmbH & Co. KG
    Inventor: Gulertan Vural
  • Patent number: 5779390
    Abstract: A device for levelling a sand layer (1) at the landing place of various jumping events, which device includes rails (2) on either side of the sand layer and a trolley (3) travelling back and forwards on them, which in turn includes at least a rake member (4) for loosening the sand layer, a sand-moving member (5.1, 5.2) for filling pits, and a levelling member (6) for levelling the loosened sand layer, as well as devices for moving these in a vertical direction. The sand-moving member consists of several parallel V-ploughs (5.1) pointed in the opposite direction to the levelling direction and a transverse bar (5.2) or similar together with support devices, moving after the rake member (4).
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: July 14, 1998
    Inventor: Jukka Tapani Tuusinen
  • Patent number: 5328295
    Abstract: A torsionally stabilized automatic grade control system for finishing plastic concrete is capable of controlling a variety of different elongated, multi-section concrete finishing tools such as a vibratory screed or the like, with or without forms. Skis that support the device facilitate sliding, winch driven movement over and through plastic concrete. Spaced apart, vertically upwardly extending towers support the device; they are disposed periodically along the length of the finishing tool. Each tower comprises a pair of extensible, spaced apart stanchions hinged to the skis and disposed on opposite sides of the tool. An upper strut extends between the stanchions. A sleeve coaxially fitted to each stanchion is synchronized with the opposite sleeve by a rigid transverse bridge. The bridge is adjustably coupled to the strut. The upper portion of the stanchions comprises a hydraulic cylinder. Each cylinder is controlled by an adjacent sensor secured to the strut to maintain the attached tool level.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: July 12, 1994
    Assignee: Allen Engineering Corporation
    Inventor: J. Dewayne Allen
  • Patent number: 5281050
    Abstract: A power screed for striking off concrete or other substances using rods which reciprocate along their long axes at between about one and one hundred cycles per second, inclusive. The rods may be adapted to individual jobs from standard dimensioned lumber or from other materials.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: January 25, 1994
    Inventor: Ronald M. Howard
  • Patent number: 5224793
    Abstract: A self-propelled screeding apparatus for uncured concrete or the like includes a frame, propulsion means for the frame, a telescoping boom including at least one longitudinally slidable member and hydraulic means to move the latter with respect to the frame, and a screeding device mounted on the boom which includes a vibratory double plate providing two spaced-apart, substantially co-planar flanges for contacting material being screeded.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: July 6, 1993
    Inventors: Andre De Pol, Roberto Martinello
  • Patent number: 5061115
    Abstract: An attachment for a slip forming paver for automatically finishing concrete surfaces which includes an elongated concrete smoothing trowel member. A mechanism is provided for oscillating the trowel member back and forth along its longitudinal axis and includes another mechanism for moving the oscillating mechanism and the trowel member itself transversely with respect to such longitudinal axis. The trowel member is pivotally mounted to the oscillating mechanism by a pair of levers and a winch and cable mechanism is provided for selectively adjusting the effective weight of the trowel member with respect to the concrete being smoothed by the trowel member. A turnbuckle arrangement is provided for adjustably maintaining the lower surface of the trowel member straight and smooth by applying tension forces thereon. To the extent that the weight adjusting mechanism and the turnbuckle arrangement move the trowel member out of balance, a single weight is provided, on the end opposite the winch.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: October 29, 1991
    Assignee: Gomaco Corp.
    Inventors: Gary L. Godbersen, Dwayne D. Salmon
  • Patent number: 4869618
    Abstract: A distributor frontally mountable on a screed to minimize or eliminate the manual distribution and leveling of freshly poured concrete which is otherwise required prior to screeding. The distributor comprises a rotatable body bearing an array of circumferentially and axially staggered plate elements. The plate elements may be swept back and are staggered so that only selected ones of the plate elements in the array are in contact with the wet concrete at any point in time of operation, with the direction of travel of the plate elements being toward the screed in the upper quadrants of rotation of the rotatable body, and away from the screed in the lower quadrants of rotation.
    Type: Grant
    Filed: July 19, 1988
    Date of Patent: September 26, 1989
    Inventor: Donald R. Morrison
  • Patent number: 4838730
    Abstract: A portable screed for working concrete and having an elongated screed plate which has a flat bottom bearing surface and a width sufficient to permit the screed to float on the concrete while the screed is being guided by an operator. For imparting uniform vibrations to the screed plate for tamping the concrete, the screed includes a stiffening brace extending substantially the length of the screed, a series of rigid, spaced cross supports secured to the brace, and a vibratory mechanism connected to vibrate the screed plate through the cross supports. A motor is mounted on the screed plate for operating the vibratory mechanism.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: June 13, 1989
    Inventor: Joseph M. Owens
  • Patent number: 4798494
    Abstract: A vibrating screed for striking off, float finishing and vibrating plastic concrete in a single pass, without being supported upon forms. A rigid, buoyant pan which floats and supports the screed comprises a generally planar surface portion in contact with the plastic concrete and a terminal portion coupled to an associated blade assembly. The blade assembly includes a central L-bracket having a lower horizontal portion substantially parallel with the pan, which terminates in a leading edge adapted to first contact and strike-off unfinished concrete. An associated face plate includes a central portion adapted to be rigidly fastened to the pan terminal portion with the L-bracket substantially sandwiched therebetween. The face plate comprises a downwardly angled guard member which defines a flotation volume between itself and the lower L-bracket, and an upper, diverging wing portion which prevents the accumulation of stricken-off concrete interiorly of the pan.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: January 17, 1989
    Assignee: Allen Engineering Corporation
    Inventor: J. Dewayne Allen
  • Patent number: 4752156
    Abstract: A system for facilitating leveling of a screed as the screed is being drawn across freshly-poured concrete. The system includes a stationary signal transmitter which is separate from the screed and which generates a planar leveling signal. Mounted on the screed are a pair of leveling signal sensors, each of the sensors being equipped for generating an indication of the level of the screed after receipt of the leveling signal. The sensor are adjustably situated on the screed for proper adjustment and orientation toward the transmitter.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: June 21, 1988
    Inventor: Joe M. Owens
  • Patent number: 4708520
    Abstract: A concrete finishing machine includes two finishing cylinders with two augers mounted in line with the two cylinders, forward ends of the augers being suspended by a frame which is pivotally attached to the cylinder support frame and rearward ends of the augers being connected through flexible couplings to the output ends of the cylinder shafts, allowing adjustment in the angle of inclination of the auger support frame, pivoting the two augers relative to the plane of the cylinder shafts.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: November 24, 1987
    Assignee: CMI Corporation
    Inventor: Murray A. Rowe
  • Patent number: 4685826
    Abstract: A vibratory concrete screed includes a frame having first and second ends and a length equal to or greater than the width of plastic concrete to be finished. A screed blade is coupled to the screed frame and engages the full width of the plastic concrete. Vibration generating structure is coupled to the screed for vibrating the screed blade. An oscillating strike-off is positioned in front of the vibrating screed blade to level, smooth and compact the plastic concrete surface before engagement by the vibrating screed blade. The oscillating strike-off includes a strike-off blade having a vertically oriented front face and a horizontally oriented lower face. Suspension means maintains the desired orientation of the front and lower faces of the strike-off blade, maintains the strike-off blade at a fixed vertical position with respect to the screed blade, and enables the strike-off blade to be laterally displaced within a horizontal plane.
    Type: Grant
    Filed: April 24, 1986
    Date of Patent: August 11, 1987
    Assignee: Allen Engineering Corporation
    Inventor: J. Dewayne Allen
  • Patent number: 4648741
    Abstract: A vibratory concrete screed includes a frame and a substantially horizontal screed blade. A pair of end-mounted winches advance the screed along concrete forms into an area of unfinished plastic concrete. A concrete spreading device is translated back and forth along the length of the screed to partially level the unfinished concrete before engagement by the screed blade. The concrete spreading device includes grading means having distributing means in the form of an auger and metering means in the form of a plow. The auger initially levels and redistributes the plastic concrete while the plow receives the plastic concrete from the trailing edge of the auger and regulates the level of plastic concrete discharged from the concrete spreading device and intercepted by the screed blade. A carriage maintains the grading means at a predetermined elevation in front of the screed blade and translates the spreading device along the length of the screed frame.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: March 10, 1987
    Inventor: J. Dewayne Allen
  • Patent number: 4614486
    Abstract: A machine for compacting and leveling a poured floor covering. The machine includes a frame having a pair of side members and a pair of parallel, ground engaging, cylindrical rollers rotatably supported on the side members and supporting the frame for movement in forward and reverse directions. A screw member is rotatably supported on the side members and has a right-hand screw segment over a portion of the length thereof and a left-hand screw segment over a remainder portion of the length thereof. If desired, a second screw member, a trowelling mechanism and a vibratory mechanism, can be provided. Structure is provided on the front screw member for pushing the material arriving at the region between the screw segments forwardly of the machine, the leveled material passing under the screw member, as the machine is moved forwardly, being compacted by successive passage beneath the cylindrical rollers.
    Type: Grant
    Filed: November 7, 1984
    Date of Patent: September 30, 1986
    Inventor: Bruno Bragagnini
  • Patent number: 4591291
    Abstract: A portable screed for working concrete and which is mounted on the user. The screed includes a variable length screed plate, a vibrator for the screed plate, a frame attached to the screed plate, a body harness connected intermediate the ends of the frame, and a balancing weight positioned so that the center of gravity of the screed is essentially coextensive with the center of gravity of the operator. The body harness is adjustable along the frame, and the frame may be adjustable as required to ensure that the center of gravity of the frame is positioned coextensively with the center of gravity of the operator so that the operator is not unbalanced by the screed.
    Type: Grant
    Filed: January 11, 1985
    Date of Patent: May 27, 1986
    Inventor: Joe M. Owens
  • Patent number: 4586889
    Abstract: A concrete-finishing machine has a drive horse, a slave horse, and a bridge-like truss selectively connectable to, or separable from, those horses at different levels so those horses can roll along surfaces at the same level or at distinctly-different levels. Vertically-directed jacks can dispose a screed or a float at different distances below the level of the bridge-like truss, and that screed and that float can be shifted along the length of that bridge-like truss to avoid obstructions within the area to be concreted. Those jacks can set different sections of the screed at different levels and thereafter simultaneously move all sections of that screed up or down. Interacting surfaces on the jacks and on the bridge-like truss enable those jacks to be readily secured to or separated from that bridge-like truss.
    Type: Grant
    Filed: September 1, 1983
    Date of Patent: May 6, 1986
    Assignee: Albert W. Krohne
    Inventors: Albert W. Krohne, Wallace Luebke
  • Patent number: 4470783
    Abstract: An apparatus for screeding and leveling coverings and coatings compounded with a binding agent, more specially a synthetic resin binding agent, is made up of a front straight edge for leveling and a back straight edge for screeding, the two straight edges being joined together as a parallelogram having a driving system for moving them backwards and forwards lengthways. As part of the apparatus there is a track-laying vehicle and a system for vertical adjustment of the straight edges.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: September 11, 1984
    Inventors: Albert Friebel, Ferdinand Schneider
  • Patent number: 4465397
    Abstract: To lay a running track, a resilient particulate material is spread over a substrate of a given width. Pressure is applied individually downwardly on the material over a plurality of respective segments of the width, as the material is smeared over and amongst the segments to form a bonded layer of said material which exhibits a continuous and even upper surface across said width. This is accomplished by means of a machine that includes an elongated frame of a length sufficient to span a plurality of lanes of a running track. A plurality of successively-hinged individually-articulatable platens depend from and are distributed along the frame. Each platen has a length corresponding generally to the width of respective ones of the lanes. Means included with respect to each of the platens enables the application of pressure on the material toward the underlying substrate of the track.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: August 14, 1984
    Inventors: Edmund D. Hollon, Blake D. Hollon
  • Patent number: 4427358
    Abstract: A knock-down vibrating concrete screed comprises elongate screed units attachable end-to-end in a longitudinally extending row to provide a screed of desired length. Ones of the screed units each comprise an elongate frame unit movable transversely over the concrete and vibration apparatus for vibrating the corresponding frame unit for smoothing the concrete over which the frame unit moves. The adjacent ends of the screed units positively block coaxially longitudinal movement of adjacent screed units into attached relation with each other. The adjacent ends of the screed units also block strictly coaxial longitudinal movement of attached screed units out of attached relation with each other.
    Type: Grant
    Filed: January 15, 1982
    Date of Patent: January 24, 1984
    Inventor: Leo J. Stilwell
  • Patent number: 4412803
    Abstract: A laterally and vertically adjustable support bracket can be coupled to an end of concrete finishing equipment such as a vibratory concrete screed to permit the equipment to be operated on a concrete surface which includes obstructions extending vertically from the edge area. The adjustable support bracket includes a vertical bracket element which is coupled to the end of the concrete finishing equipment. A vertically extending member is spaced apart from the vertical bracket element and engages a load bearing surface located outboard of the concrete surface. A laterally extending member extends between the vertical bracket element and the vertically extending member and includes various adjustment devices for varying the lateral spacing and relative vertical alignment between the vertical bracket element and the vertically extending member.
    Type: Grant
    Filed: January 27, 1982
    Date of Patent: November 1, 1983
    Assignee: Allen Engineering Corporation
    Inventor: J. Dewayne Allen
  • Patent number: 4408978
    Abstract: An apparatus for automatically advancing a concrete screed as the screed tamps and levels concrete. The apparatus includes cable reeling means attached to either end of the concrete screed for winding a drive cable. The drive cable is adapted for attachment to a fixed location downstream from the screed so that winding of the cable on the reeling means propels the concrete screed towards the fixed location. The cable reeling means is driven by a power transfer means including a driven pulley and a slave pulley with an endless belt loosely mounted around the pulleys so that when the driven pulley is rotated, the belt will normally not drive the slave pulley. The apparatus also includes an assembly positioned to tension the belt between the drive and slave pulleys to cause the driven pulley to drive the slave pulley through the belt, and therefore drive the cable reeling means, propelling the concrete screed across the concrete.
    Type: Grant
    Filed: October 6, 1981
    Date of Patent: October 11, 1983
    Inventor: Joe M. Owens
  • Patent number: 4345852
    Abstract: A leveling device for an asphalt finisher or the like including a pair of screeds disposed at front and rear portions of the device on auxiliary frames which are slidably coupled to a main frame. The main frame is pivotably mounted to a pair of supporting arms extending from the vehicle body. The screeds are both movable laterally and tiltable sidewards so that a predetermined depth of asphalt coating can be attained and a crown portion provided if desired.
    Type: Grant
    Filed: March 6, 1980
    Date of Patent: August 24, 1982
    Assignees: Niigata Engineering Co., Ltd., Nippon Hodo Co., Ltd.
    Inventors: Fumio Goto, Kenji Yoshino, Hiroshi Kono, Mitsuaki Naito
  • Patent number: 4340351
    Abstract: A light-weight, portable and sturdy vibratory concrete screed which may be fabricated in modular fashion from a plurality of interconnected, separable frame units. A framework is provided, having a series of spaced, parallel unitary frame members of triangular configuration, the corners of the base of each frame member being attached to a pair of screed plates and maintaining the screed plates in spaced-apart relationship. Side braces and base braces extend between adjacent frame members for framework rigidity. An eccentric shaft is supported for rotation in bearings mounted in the frame members. The shaft may be symmetrically located in order to impart uniform vibrations to the two screed plates, or may be offset in order to self-propel the concrete screed.
    Type: Grant
    Filed: February 13, 1981
    Date of Patent: July 20, 1982
    Inventor: Joe M. Owens
  • Patent number: 4316715
    Abstract: A vibratory concrete screed includes a generally triangular, open support frame to which front and rear screed blades are coupled. Air vibrators are coupled at intervals along the front and rear screed blades to impart vibratory motion to the blades. First and second end brackets are coupled to the screed top pipe and to the front and rear screed blades and include first and second side members which define a plane oriented perpendicular to the front and rear screed blades. A vertically and horizontally adjustable extension bracket is coupled to the first and second side members of the end bracket of the screed and is maintained in a plane perpendicular to the plane defined by the first and second side members of the end bracket.
    Type: Grant
    Filed: April 26, 1979
    Date of Patent: February 23, 1982
    Assignee: Allen Engineering Corporation
    Inventor: J. Dewayne Allen
  • Patent number: 4213749
    Abstract: A lightweight and portable vibrating screed is made up of a base frame unit which mounts a variable speed drive engine and to which other pivotal sub-frame units may be attached for extending the length of the screed. A shaft is supported with a substantial amount of play between the shaft and its support bearings for rotation between a trailing pair of screed blades to which vibration is imparted throughout the length of the screed as the shaft is driven by the engine. The engine vibration is also imparted in a manner to cause the screed to creep forward which reduces the force required to advance the screed over the concrete. A third leading blade to which relatively minimal vibration is imparted acts to level the concrete, substantially reduces manual puddling and improves the screeding accomplished by the trailing pair of blades.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: July 22, 1980
    Inventor: Donald R. Morrison
  • Patent number: 4068970
    Abstract: A concrete finishing machine embodying an elongated supporting frame for extending across a roadway, or the like, and having a conveyor screw projecting from one side of the frame for advancing and spreading concrete ahead of the machine and having screed mechanism below the supporting frame for striking-off, smoothing and vibrating such spread concrete.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: January 17, 1978
    Assignee: CMI Corporation
    Inventor: Murray A. Rowe
  • Patent number: RE39834
    Abstract: A contouring device and method for contouring three-dimensionally curved surfaces includes an elongated contouring assembly that is supported at opposite ends by a pair of fluid cylinders. The fluid cylinders are controlled to raise and lower the ends of the contouring assembly independently of each other, thereby allowing the contouring assembly to create a three-dimensionally curved surface as it passes over an area to be contoured. The control of one of the fluid cylinders is based on a comparison of the measured position of a first end of the contouring assembly with a profile of the surface to be leveled that is stored in a computer memory. The measurement of the position of the first end of the contouring assembly is achieved by a tracking device which tracks the position of a target positioned on the first end of the contouring assembly and which determines the three dimensional position of the target.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: September 11, 2007
    Assignees: Michigan Technological University, Somero Enterprises, Inc.
    Inventors: Carl B. Kieranen, Charles A. Hallstrom, Glen R. Simula, Nils P. Ruonavaara, James D. Waineo