Tool Rotating In Horizontal Plane Patents (Class 404/112)
  • Patent number: 10100537
    Abstract: A high performance, multiple rotor, hydraulically driven riding trowel for finishing concrete includes a rigid trowel frame with two or more downwardly-projecting, bladed rotor assemblies that frictionally engage the concrete surface while supporting the trowel. The rotor assemblies are tilted with double acting hydraulic cylinders to effectuate steering and control. A seating arrangement supports an operator. A special ventilation path is provided to prevent overheating of the operator area. cooling compartment adjacent the seating region, Pathways are established by a cooling compartment enclosed by a shroud having at least one side ventilation orifice, a cooler assembly disposed within the cooling compartment; the cooler assembly comprising a grill, a plenum with a heat exchanger adjacent said grill and a fan adjacent said heat exchanger, the plenum having open sides and a closed bottom to prevent air pathways through the seating region.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: October 16, 2018
    Assignee: Allen Engineering Corporation
    Inventor: Timmy Don Guinn
  • Patent number: 9631378
    Abstract: A hydrostatically power self-propelled concrete finishing trowel has at least two coolers in a cooling system of the machine's hydraulic circuit. In the most typical case in which the first cooler is a closed loop oil cooler, the second cooler may take the form of an open loop oil cooler disposed in a flow path connecting one or more low-pressure outlets of the hydrostatic drive system to a reservoir. The closed loop oil cooler actively drops the temperature within the trowel's hydrostatic drive system, while the open loop oil cooler supplements that cooling by reducing the oil temperature in the reservoir.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: April 25, 2017
    Assignee: Wacker Neuson Production Americas LLC
    Inventors: Scott Grahl, Michael Jenkins
  • Patent number: 9068301
    Abstract: A dual rotor, manually steered riding trowel comprises powered, downwardly projecting rotors driven by reduction gear boxes that are tilted by parallel levers beneath the machine. A pair of vertical hand steering levers actuate the parallel levers to tilt the rotors. Each rotor may be swiveled in an arc parallel with the biaxial plane to produce pivoted fore and aft trowel movement. At least one rotor responds to lateral movements of one or both steering levers by tilting in an arc perpendicular to the biaxial plane, moving the trowel left or right. To emulate prior Allen trowels, lateral movements of one of the hand levers is mechanically disabled with a transformation link anchored to the frame. The transformation link may be disconnected from the frame and instead connected to the foot of the companion hand steering lever, allowing both steering levers to pivot laterally, resulting in a different steering “feel.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: June 30, 2015
    Assignee: Allen Engineering Corporation
    Inventor: Jeffrey Lynn Fielder
  • Patent number: 8998531
    Abstract: An automatic pitch control system for riding power trowels enables a user to control and automatically adjust trowel blade pitch and height for concrete finishing. The disclosed system provides for blade pitch of separate rotor assemblies to be adjusted independently of one another or synchronously. The disclosed system also provides for a mode of operation that allows the user to completely flatten trowel blades for panning.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: April 7, 2015
    Assignee: Multiquip, Inc.
    Inventors: Steven K. Hanson, Brian L. Hammond, David Lillanthal, Benjamin A. Wiese, Bruce R. Gillespie, Robert Dane Davis, Cole R. Baird
  • Publication number: 20150093194
    Abstract: A power riding trowel for finishing concrete comprising rotors turned by gearboxes driven by gearbox driveshaft's linked to the moor output by CVT gear ratio control. The motor output shaft drives a first jackshaft driven at a higher speed than the motor RPM. A CVT pulley assembly comprising first and second CVT pulleys and a CVT belt entrained between them has a first CVT pulley driven by the first jackshaft. A second jackshaft splined to the second CVT pulley drives the gearbox driveshaft at a speed lower than said second jackshaft to operate the rotor means at a proper speed and torque.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Applicant: ALLEN ENGINEERING CORPORATION
    Inventor: Jeffrey Lynn Fielder
  • Publication number: 20150093195
    Abstract: A dual rotor, manually steered riding trowel comprises powered, downwardly projecting rotors driven by reduction gear boxes that are tilted by parallel levers beneath the machine. A pair of vertical hand steering levers actuate the parallel levers to tilt the rotors. Each rotor may be swiveled in an arc parallel with the biaxial plane to produce pivoted fore and aft trowel movement. At least one rotor responds to lateral movements of one or both steering levers by tilting in an arc perpendicular to the biaxial plane, moving the trowel left or right. To emulate prior Allen trowels, lateral movements of one of the hand levers is mechanically disabled with a transformation link anchored to the frame. The transformation link may be disconnected from the frame and instead connected to the foot of the companion hand steering lever, allowing both steering levers to pivot laterally, resulting in a different steering “feel.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Applicant: ALLEN ENGINEERING CORPORATION
    Inventor: Jeffrey Lynn Fielder
  • Publication number: 20140321912
    Abstract: A rigid wheel (18) or roller for a compactor machine, comprising a drum for contacting material to be compacted. The drum has a profiled outer surface including a first cylindrical portion (27) and a second cylindrical portion (29). The first cylindrical portion has a larger rolling diameter than the second cylindrical portion. An inclined portion (24) extends between the first and second cylindrical portions. The area of contact between the outer surface of the drum and refuse, soil or other material to be compacted varies with the depth of penetration of the wheel into the material. The different rolling diameters within the scope of one wheel gives different ground pressures. This means that the pressure applied to the material for compaction varies depending upon the depth of penetration of the wheel. One benefit of this wheel/roller design is to allow improved go anywhere mobility—high floatation where needed changing to heavy ground pressure where conditions demand.
    Type: Application
    Filed: November 9, 2012
    Publication date: October 30, 2014
    Inventors: Brian M. Thomson, David Roderick Lloyd, Alan Keating
  • Patent number: 8757925
    Abstract: A concrete finishing tool includes a body having a chassis, a guard, and frame supports. An extension handle is attached to the body, and a motor is attached to the body and operatively connected to a driving gear and driven gear to rotate blades having a quick change coupling mechanism. An integrated handle is configured on the body and houses a switch for the motor that is powered by a power supply.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: June 24, 2014
    Inventor: Todd Micheal Banchio
  • Patent number: 8708598
    Abstract: An automatic speed control system for a power trowel for regulated adjustment of rotational speed of the trowel rotor assemblies. The disclosure provides for and is configurable to automatically regulate trowel speed and can be adapted to utilize advanced control features like cruise control and power management. The disclosed system incorporates several user and feedback inputs in a number of logic patterns for trowel control.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: April 29, 2014
    Assignee: Multiquip, Inc.
    Inventors: Steven K. Hanson, Cole R. Baird, Robert Dane Davis, Benjamin A. Wiese, Brian L. Hammond, David Lilienthal, Bruce Gillespie
  • Publication number: 20130315667
    Abstract: An automatic speed control system for a power trowel for regulated adjustment of rotational speed of the trowel rotor assemblies. The disclosure provides for and is configurable to automatically regulate trowel speed and can be adapted to utilize advanced control features like cruise control and power management. The disclosed system incorporates several user and feedback inputs in a number of logic patterns for trowel control.
    Type: Application
    Filed: November 14, 2012
    Publication date: November 28, 2013
    Inventors: Steven K. Hanson, Brian L. Hammond, David Lillanthal, Benjamin A. Weise, Bruce R. Gillespie, Robert Dane Davis, Cole R. Baird
  • Publication number: 20130309010
    Abstract: A vehicle for transporting a ride-on trowel includes: a vehicle frame defining a bay sized and shaped to receive the ride-on trowel, including a lower frame surrounding the bay on three sides, a U-shaped rear frame, and an L-shaped upper frame connected at the lower frame and the rear frame; wherein the lower frame is configured to closely match the shape of an outer frame of the ride-on trowel, so that the ride-on trowel will not swing or sway in the bay when supported from the vehicle frame; wheels mounted to the lower frame; guides extending downward from the lower frame, the guides being located to limit motion of the ride-on trowel in both left-right and fore-aft directions with respect to the vehicle frame while being lifted or lowered; means for driving at least one of the wheels; and means for supporting the ride-on trowel from the vehicle frame.
    Type: Application
    Filed: November 13, 2012
    Publication date: November 21, 2013
    Inventor: Scott A. Richer, SR.
  • Patent number: 8511934
    Abstract: A drive train assembly for a ride-on twin rotor concrete finishing machine mounts the main clutch and drive belt arrangement at an unobstructed location on a gear box at one end of the supporting frame where it is readily accessible for changing the drive belt without disassembly of the main drive shaft while maintaining a centrally located engine.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: August 20, 2013
    Assignee: M-B-W Inc.
    Inventor: Benjamin J. Paske
  • Publication number: 20130129419
    Abstract: An automatic pitch control system for riding power trowels enables a user to control and automatically adjust trowel blade pitch and height for concrete finishing. The disclosed system provides for blade pitch of separate rotor assemblies to be adjusted independently of one another or synchronously. The disclosed system also provides for a mode of operation that allows the user to completely flatten trowel blades for panning.
    Type: Application
    Filed: November 14, 2012
    Publication date: May 23, 2013
    Inventors: STEVEN K. HANSON, BRIAN L. HAMMOND, DAVID LILLANTHAL, BENJAMIN A. WIESE, BRUCE R. GILLESPIE, ROBERT DANE DAVIS, COLE R. BAIRD
  • Patent number: 8414219
    Abstract: A self-propelled concrete finishing trowel has an integrated transport system that allows the towel to be moved from location to location. The transport system includes a pair of spaced wheel assemblies, each including a pair of wheels that are connected to a frame of the trowel. The wheels of each respective wheel assembly are connected to one another via a powered actuator such as a double acting hydraulic cylinder. The powered actuator is actuatable to raise and lower the first and second wheels from a stowed position in which the wheels are located above the ground and the blades are supported on the ground to a deployed position in which the wheel are supported on the ground and the blades are raised from the ground.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: April 9, 2013
    Assignee: Wacker Neuson Production Americas LLC
    Inventors: Timothy J. Lickel, Scott Grahl
  • Patent number: 8388264
    Abstract: A self-propelled concrete finishing trowel has an electronically controlled engine droop control to prevent stalling of the trowel's engine during overload conditions. The engine droop control includes an engine speed sensor that measures operating speed of the engine and a controller that adjusts operation of a hydrostatic drive system of the trowel based on feedback received from the engine speed sensor to reduce the power draw on the engine during overload conditions. The hydrostatic drive system is powered by the engine to rotate one or more finishing blade arrangements, and under normal operating conditions, is driven by a controller to rotate the blade arrangements at an operator desired speed, such as input by a foot pedal. During overloading conditions, the controller overrides the operator input to drive the hydrostatic drive system to match an operating speed supported by the overloaded engine to reduce the power draw on the engine and thereby prevent engine stalling.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: March 5, 2013
    Assignee: Wacker Neuson Production Americas LLC
    Inventor: Scott Grahl
  • Patent number: 8360680
    Abstract: High performance, multiple rotor, hydraulically driven riding trowels for finishing concrete have unloader valve circuitry for controlling hydraulic pressure. Each trowel has a rigid frame with two or more downwardly-projecting, bladed rotor assemblies that finish concrete. The rotor assemblies are tilted manually or hydraulically to effectuate steering and control. Blade pitch is controlled manually or hydraulically. The unloader valve system monitors drive pump pressure with a shuttle valve to derive an unloader pilot signal. A sequence valve responds to the unloader pilot signal to control a pressure valve that bypasses the normal foot control valve in an overpressure situation. The pressure control head signal normally applied to the hydraulic drive motor control heads is modified with a feedback signal to automatically control the associated pump swash plates. A gearbox may be disposed between the drive motors and rotors. Piston type and gear and vane type motors may power the rotors.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: January 29, 2013
    Assignee: Allen Engineering Corporation
    Inventors: J. Dewayne Allen, Timmy D. Guinn, Edward A. Waldon, Scott R. Sugg
  • Patent number: 8282313
    Abstract: A motor-powered concrete finisher, having a motor and a rotatable circular disc powered by the motor are attached at the end of a counter-balanced extension pole. A handle may be provided at or near the balance point of the extension pole. The motor may be disposed on the rear end of the extension pole, to assist in counterbalancing the weight of the circular disc, hub, front end of the extension pole and other weight on the front end of the extension pole. An angled gear drive on the front end of the extension pole, driven by a shaft extending through the extension pole, has an attachment hub at its end for attachment of the circular disc. The motor may be an internal combustion engine. The concrete finisher may be a weed trimmer having the weed trimmer attachment replaced by a rotatable circular disc.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: October 9, 2012
    Inventor: Louis J. Tijerina, Jr.
  • Patent number: 8240949
    Abstract: A hand-controlled, curb forming machine that is transformable between different widths and geometries, and between different wheel configurations, to accommodate different concrete curbing. A downwardly projecting, rotating head that rotates about an axis perpendicular to the slab shapes raw concrete into appropriately styled and contoured curbs. A machine frame slidably receives an adjustable, wheeled subframe. A roller on the opposite frame side rides on an opposite curb form. A pivoted handle is reversible. The electric motor is adjustably secured to the frame by a mounting plate movable within follower slots in the frame. A removable adaptor plate disposed on an opposite frame end supports the machine when not in use, but can be removed for normal curb work exposing a form riding roller. When the machine is deployed with monolithic curbs without rebar, the adaptor plate can mount to the subframe to raise the machine by lowering the wheels.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: August 14, 2012
    Assignee: Curb Shapers, Inc.
    Inventor: Douglas J. Weber
  • Patent number: 8226324
    Abstract: Disclosed is an unfolding ride-on machine having a frame, a front cover and back cover supported by the frame, and internal workings supported by the frame and contained within an internal space. A right side cover and left side cover are pivotally connected to the frame. A seat platform is pivotally connected to the front or back covers. Each of the right side cover, left side cover, and seat platform are configured to pivotally transition between a closed configuration and an open configuration. In the open configuration, the internal workings are readily accessible.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: July 24, 2012
    Assignee: Multiquip, Inc.
    Inventor: Larry Jake Chapple
  • Publication number: 20120163912
    Abstract: A self-propelled concrete finishing trowel has an integrated transport system that allows the towel to be moved from location to location. The transport system includes a pair of spaced wheel assemblies, each including a pair of wheels that are connected to a frame of the trowel. The wheels of each respective wheel assembly are connected to one another via a powered actuator such as a double acting hydraulic cylinder. The powered actuator is actuatable to raise and lower the first and second wheels from a stowed position in which the wheels are located above the ground and the blades are supported on the ground to a deployed position in which the wheel are supported on the ground and the blades are raised from the ground.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 28, 2012
    Inventors: Timothy J. Lickel, Scott Grahl
  • Publication number: 20120163914
    Abstract: A self-propelled concrete finishing trowel has an electronically controlled engine droop control to prevent stalling of the trowel's engine during overload conditions. The engine droop control includes an engine speed sensor that measures operating speed of the engine and a controller that adjusts operation of a hydrostatic drive system of the trowel based on feedback received from the engine speed sensor to reduce the power draw on the engine during overload conditions. The hydrostatic drive system is powered by the engine to rotate one or more finishing blade arrangements, and under normal operating conditions, is driven by a controller to rotate the blade arrangements at an operator desired speed, such as input by a foot pedal. During overloading conditions, the controller overrides the operator input to drive the hydrostatic drive system to match an operating speed supported by the overloaded engine to reduce the power draw on the engine and thereby prevent engine stalling.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 28, 2012
    Inventor: Scott Grahl
  • Patent number: 8132983
    Abstract: In a riding concrete finishing trowel, a stabilizer is operatively disposed between the frame and either the gearbox or a structure that is coupled to the gearbox so as reduce the effects of rotor assembly vibration on the trowel. In one embodiment, the stabilizer takes the form of a gas spring located between the frame and the pitch control post. The stabilizer may be located relatively close to the top of the pitch control post so as to take advantage of the mechanical advantage offered by the spacing between that location and the gearbox.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: March 13, 2012
    Assignee: Wacker Neuson Production Americas LLC
    Inventors: Todd J. Lutz, Richard D. Goldberg
  • Patent number: 8132984
    Abstract: A self-propelled concrete finishing trowel has a power steering system that facilitates operator selection of a desired steering performance response of the trowel. The power steering system includes a controller that communicates operator steering instructions from one or more joysticks and the powered actuators associated with the driven shafts. A selector allows the operator to select one or more preset steering modes, each of which has a different set of steering response characteristics for a given range of joystick motion.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: March 13, 2012
    Assignee: Wacker Neuson Production Americas LLC
    Inventor: Scott Grahl
  • Patent number: 8075222
    Abstract: A concrete finishing apparatus for smoothing and leveling partially set-up concrete at a support surface includes a frame portion, a first concrete working member and a second concrete working member disposed at the frame portion. The first concrete working member is rotatable about a first axis of rotation that is generally vertical when the first concrete working member is supported at a generally horizontal support surface. The second concrete working member is rotatable about a second axis of rotation that is generally vertical when the second concrete working member is supported at a generally horizontal support surface. The first and second concrete working members engage the partially set-up concrete surface at the support surface and rotate about the first and second axes of rotation to process the concrete surface.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: December 13, 2011
    Assignee: Somero Enterprises, Inc.
    Inventors: Philip J. Quenzi, David W. Somero, Tracy L. Matson
  • Publication number: 20110268504
    Abstract: A power trowel for treating a concrete surface includes a support frame configured to be moved on the concrete surface. A propane supply vessel is supported by the support frame and is configured to contain propane. The propane supply vessel is positioned to reduce obstructions to the operator's view of the concrete surface. An internal combustion engine is supported by the support frame and is in fluid communication with the propane supply vessel to receive propane therefrom to power the internal combustion engine. One or more rotatable shafts are driven by the internal combustion engine, and one or more trowel blades connect to the one or more rotatable shafts so as to rotate therewith.
    Type: Application
    Filed: April 28, 2011
    Publication date: November 3, 2011
    Inventors: John G. Marx, Jonathan P. Lobert, Todd M. Gehring
  • Publication number: 20110222966
    Abstract: High performance, multiple rotor, hydraulically driven riding trowels for finishing concrete have unloader valve circuitry for controlling hydraulic pressure. Each trowel has a rigid frame with two or more downwardly-projecting, bladed rotor assemblies that finish concrete. The rotor assemblies are tilted manually or hydraulically to effectuate steering and control. Blade pitch is controlled manually or hydraulically. The unloader valve system monitors drive pump pressure with a shuttle valve to derive an unloader pilot signal. A sequence valve responds to the unloader pilot signal to control a pressure valve that bypasses the normal foot control valve in an overpressure situation. The pressure control head signal normally applied to the hydraulic drive motor control heads is modified with a feedback signal to automatically control the associated pump swash plates. A gearbox may be disposed between the drive motors and rotors. Piston type and gear and vane type motors may power the rotors.
    Type: Application
    Filed: March 9, 2010
    Publication date: September 15, 2011
    Inventors: J. Dewayne Allen, Timmy D. Guinn, Edward A. Waldon, Scott R. Sugg
  • Publication number: 20110217120
    Abstract: A road building machine for road surface paving is provided.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 8, 2011
    Applicant: BOMAG GmbH
    Inventor: Jens Wagner
  • Patent number: 7980783
    Abstract: A linear lost motion mechanism is located within a tubular handle of a machine, such as a concrete finishing machine. The linear lost motion mechanism includes a pitch block configured to selectively frictionally lock with the tubular handle or a component attached to the tubular handle using a biasing spring. The linear lost motion mechanism can perform a number of functions, such as controlling a blade pitch adjustment system of a concrete finishing machine.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: July 19, 2011
    Inventor: Timothy S. Jaszkowiak
  • Publication number: 20110135388
    Abstract: A concrete finishing apparatus for smoothing and leveling partially set-up concrete at a support surface includes a frame portion, a first concrete working member and a second concrete working member disposed at the frame portion. The first concrete working member is rotatable about a first axis of rotation that is generally vertical when the first concrete working member is supported at a generally horizontal support surface. The second concrete working member is rotatable about a second axis of rotation that is generally vertical when the second concrete working member is supported at a generally horizontal support surface. The first and second concrete working members engage the partially set-up concrete surface at the support surface and rotate about the first and second axes of rotation to process the concrete surface.
    Type: Application
    Filed: February 11, 2011
    Publication date: June 9, 2011
    Applicant: SOMERO ENTERPRISES, INC.
    Inventors: Philip J. Quenzi, David W. Somero, Tracy L. Matson
  • Patent number: 7891906
    Abstract: A concrete finishing apparatus and method for smoothing and flattening partially set-up concrete to a close-tolerance surface includes a movable unit that is movable and supported at a partially set-up concrete surface and at least one rotatable ring finishing member mounted to the movable unit. The rotatable ring finishing member is positioned at the concrete surface and rotatable to engage and finish the surface of the partially set-up concrete to a higher quality, closer-tolerance flat and level concrete floor surface. The apparatus may include a pair of rotatable ring finishing members that may be rotatable in opposite directions to enhance the floating and finishing processes and to transport any cement paste, sand, small aggregate, or concrete mix residue forward with the rotatable ring finishing members working surfaces to cut high areas and fill in any low areas as the concrete finishing apparatus moves over the partially set-up concrete.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: February 22, 2011
    Assignee: Somero Enterprises, Inc.
    Inventors: Philip J. Quenzi, David W. Somero, Tracy L. Matson
  • Publication number: 20110033235
    Abstract: A concrete finishing trowel includes a frame, a power source supported on the frame and having an output shaft, at least one rotor assembly supported on the frame. Each rotor assembly comprises a driven rotor shaft with a plurality of trowel blades extending outwardly therefrom so as to rest on a surface to be finished and to rotate with said driven rotor shaft to finish a respective circular area. A transmission system operably couples the power source output shaft to the driven rotor shaft of the at least one rotor assembly. The transmission system includes a variable driving pulley operable coupled directly or indirectly to the power source output shaft and including a resiliently deflectable portion that is movable to change the effective drive diameter of the variable driving pulley, and a variable driven pulley operably coupled to the variable driving pulley with a belt.
    Type: Application
    Filed: February 3, 2010
    Publication date: February 10, 2011
    Applicant: BARTELL MORRISON
    Inventors: Rob Leggitt, Jeff Gao
  • Publication number: 20100329784
    Abstract: In an automotive road construction machine (1), with a working drum (6) for working a ground surface or traffic surface (3) mounted at a machine frame (4), a combustion engine (10) for driving the working drum (6), and a drive train (8) between the combustion engine (10) and the working drum (6), it is provided that at least one vibration damper (5) and/or vibration absorber is arranged at the working drum (6) or in the drive train (8) downstream of the combustion engine (10), with the said vibration damper (5) and/or vibration absorber eliminating or reducing rotary vibrations generated by the combustion engine (10).
    Type: Application
    Filed: April 23, 2007
    Publication date: December 30, 2010
    Inventors: Axel Mahlberg, Lothar Schwalbach, Günter Hähn
  • Patent number: 7815393
    Abstract: A mounting assembly for rotatably mounting a surface processing tool holder on at least one motor driven rotatable arm of a surface processing apparatus, such that the tool can spin freely as the arm is driven by the motor, includes an elongate shank having a smooth surfaced, cylindrical portion intermediate its ends adapted for positioning within an aperture in the tool holder with one threaded end portion projecting through the aperture for attachment to an elongate mounting bar adapted for attachment to the arm. A bearing supported by the tool body and surrounding the smooth surfaced portion of the shank is rotatable relative to the shank. The mounting bar includes a threaded aperture for receiving the threaded end portion of the shank and the threaded aperture includes a counterbore for receiving the end portion of the smooth surfaced shank portion which is adjacent the threaded end portion.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: October 19, 2010
    Assignee: Wagman Metal Products, Inc.
    Inventors: Jeffrey L. Snyder, Brett L. Miller
  • Publication number: 20100254763
    Abstract: A self-propelled concrete finishing trowel has a power steering system that facilitates operator selection of a desired steering performance response of the trowel. The power steering system includes a controller that communicates operator steering instructions from one or more joysticks and the powered actuators associated with the driven shafts. A selector allows the operator to select one or more preset steering modes, each of which has a different set of steering response characteristics for a given range of joystick motion.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 7, 2010
    Inventor: Scott Grahl
  • Patent number: 7785034
    Abstract: A desegregation system for use with hot mix asphalt, warm mix or with any material that will flow and which includes pieces of material of various sizes and for which uniform mixture is important. The system is substantially within a hopper having a material inlet and a material outlet and includes an auger section having a plurality of flights near a first end of an auger shaft and another, counter-handed section near the other end of the auger shaft. The system preferably has a parallel, interlaced pair of right handed auger sections mounted near corresponding ends of separate shafts and a second pair of parallel interlaced auger sections, left-handed, mounted near the opposite and corresponding ends of separate shafts.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: August 31, 2010
    Assignee: Weiler, Inc.
    Inventors: William A. Hood, Tate Huizer
  • Patent number: 7775740
    Abstract: A self-propelled concrete finishing trowel has a steering system that counteracts a portion of the load associated with operator manipulation of a steering handle. A steering linkage connects the steering handle to a rotor assembly. A steering assist mechanism, preferably including a torsion bar or a spring, imposes a preload on the steering linkage to reduce handle actuation forces. The steering assist mechanism reduces handle retention forces, required to maintain the handle in a particular position after moving the handle to that position, to less than about 20 lbs throughout the stroke of the operating handle.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: August 17, 2010
    Assignee: Wacker Neuson Corporation
    Inventor: Roberto Berritta
  • Patent number: 7775741
    Abstract: A method and apparatus for finishing cured concrete floors using a riding trowel to which large diameter pans are rotationally secured, the pans having abraders releasably secured to their undersides. The individual abraders are preferably individually removably secured to the pans by hook-and-loop fasteners, wherein the fasteners are selectively disposed on the flat bottom surfaces of the pans or within shallow depressions in the bottom surfaces of the pans. The riding trowel further comprises a vacuum system in fluid communication with a contained space formed by a shroud having a rigid upper portion and a flexible lower portion where it contacts the finished cured concrete floor surface.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: August 17, 2010
    Inventor: Paul Copoulos
  • Publication number: 20100202833
    Abstract: Disclosed is an unfolding ride-on machine having a frame, a front cover and back cover supported by the frame, and internal workings supported by the frame and contained within an internal space. A right side cover and left side cover are pivotally connected to the frame. A seat platform is pivotally connected to the front or back covers. Each of the right side cover, left side cover, and seat platform are configured to pivotally transition between a closed configuration and an open configuration. In the open configuration, the internal workings are readily accessible.
    Type: Application
    Filed: February 2, 2010
    Publication date: August 12, 2010
    Inventor: Larry Jake Chapple
  • Patent number: 7771139
    Abstract: A self-propelled concrete finishing trowel has a transport system or dolly that allows the towel to be moved manually. The transport system includes wheels that are connected to a frame of the trowel by a connector such as a rotatable shaft. A single lift device such as a jack is coupled to the connector such that operation of the lift device translates both wheels relative to the frame. The transport system allows a user to quickly deploy the wheels for non-use transportation. The wheels are also located within the footprint of the trowel so as not to interfere with a finishing operation and are positioned to maximize stability.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: August 10, 2010
    Assignee: Wacker Neuson Corporation
    Inventor: Scott Grahl
  • Publication number: 20100150653
    Abstract: A blade pitch adjustment system may adjust the pitch of a plurality of blades. A height adjustment assembly adjusts a distance between a rotatable blade assembly and a thrust collar. Adjusting the distance between the assembly and the collar changes the pitch of the blades of the machine. Two or more blade pitch adjustment systems may be adjusted at the same time, at the same rate. For concurrent adjustment, systems are connected to a rotating member by tension cables. A linear actuator rotates the rotating member, changing the tension on the tension cables, actuating the systems to change the pitch of the blade assemblies. The pitch of the blade assemblies may have an offset or bias which may be adjusted for with a sliding member, which may be powered by a linear actuator. The system may be used with a concrete finishing machine.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 17, 2010
    Inventor: Timothy S. Jaszkowiak
  • Patent number: 7690864
    Abstract: A high performance, multiple rotor, hydraulically driven riding trowel for finishing concrete includes a rigid trowel frame with two or more downwardly-projecting, bladed rotor assemblies that frictionally engage the concrete surface. The rotor assemblies are tilted with double acting hydraulic cylinders to effectuate steering and control. Double acting hydraulic cylinders also control blade pitch. Hydraulic pressure to the rotors is monitored and controlled by an unloader valve system that monitors drive pump pressure with a shuttle valve to derive an unloader pilot signal. A sequence valve responds to the unloader pilot signal to control a pressure valve that bypasses the normal foot control valve in an overpressure situation. The pressure control head signal normally applied to the hydraulic drive motor control heads is modified with a feedback signal to automatically control the associated pump swash plates.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: April 6, 2010
    Assignee: Allen Engineering Corporation
    Inventors: J. Dewayne Allen, Timmy D. Guinn, Mike Woodside, Michael McKean, Jack C. Wilson
  • Patent number: 7674069
    Abstract: A concrete finishing trowel comprising at least one rotor which is mounted on a frame and is provided with a rotatably driven shaft and several blades that are mounted on the driven shaft. A blade deflection mechanism moves the blades on a path that deviates from a circular path relative to the drive shaft.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: March 9, 2010
    Assignee: Wacker Neuson SE
    Inventor: Otto W. Stenzel
  • Patent number: 7674068
    Abstract: The cement finishing machine (10) has adjustable heat generating assemblies (22, 24), affixed to each side of the finishing machine (10). Each of the heat generating assemblies (22, 24) includes a propane burner that extends into an elongate heating tube. The heat generating assemblies (22, 24) also include a vertical adjustment assembly and detachable heat guards. The heat generated by the propane burner is directed through an opening in the bottom of each of the heating tubes and onto the surface of an unfinished cement slab during the cement finishing process. The heat facilitates the evaporation of excess water generated during the cement finishing process.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: March 9, 2010
    Inventor: Cleto T. Valles
  • Publication number: 20090274517
    Abstract: A power trowel is provided for finishing concrete. The trowel can be used to finish concrete at different stages of hardening. The handle of the trowel is rotated both to adjust the speed of rotation of the trowel blades and to administer a spray solution to the surface of concrete being finished with the trowel. The trowel includes dual rotating hubs with blades attached to and extending outwardly from each hub. The surface areas covered by the blades on one hub overlaps the surface area covered by the blades on the other hub. Each hub rotates in the same direction and non-synchronously with the other hub.
    Type: Application
    Filed: January 14, 2009
    Publication date: November 5, 2009
    Inventor: Lawrence K. Rose
  • Patent number: 7604434
    Abstract: An apparatus for leveling and smoothing a surface that permits blades to be easily installed and removed from their corresponding trowel arms. The blades are formed such that attachment of a blade to the trowel arm is achieved by simply attaching the blade using one or more threaded bolts. Further, the blades of the subject invention are formed without the need of riveting or welding operations thereby significantly decreasing the manufacturing time and expense of the blades.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: October 20, 2009
    Inventor: Thomas L. Roth
  • Publication number: 20090214294
    Abstract: A concrete finishing apparatus and method for smoothing and flattening partially set-up concrete to a close-tolerance surface includes a movable unit that is movable and supported at a partially set-up concrete surface and at least one rotatable ring finishing member mounted to the movable unit. The rotatable ring finishing member is positioned at the concrete surface and rotatable to engage and finish the surface of the partially set-up concrete to a higher quality, closer-tolerance flat and level concrete floor surface. The apparatus may include a pair of rotatable ring finishing members that may be rotatable in opposite directions to enhance the floating and finishing processes and to transport any cement paste, sand, small aggregate, or concrete mix residue forward with the rotatable ring finishing members working surfaces to cut high areas and fill in any low areas as the concrete finishing apparatus moves over the partially set-up concrete.
    Type: Application
    Filed: February 27, 2009
    Publication date: August 27, 2009
    Applicant: SOMERO ENTERPRISES, INC.
    Inventors: Philip J. Quenzi, David W. Somero, Tracy L. Matson
  • Publication number: 20090190999
    Abstract: A method and apparatus for finishing cured concrete floors using a riding trowel to which large diameter pans are rotationally secured, the pans having abraders releasably secured to their undersides. The individual abraders are preferably individually removably secured to the pans by hook-and-loop fasteners, wherein the fasteners are selectively disposed on the flat bottom surfaces of the pans or within shallow depressions in the bottom surfaces of the pans. The riding trowel further comprises a vacuum system in fluid communication with a contained space formed by a shroud having a rigid upper portion and a flexible lower portion where it contacts the finished cured concrete floor surface.
    Type: Application
    Filed: March 25, 2009
    Publication date: July 30, 2009
    Inventor: Paul Copoulos
  • Publication number: 20090185860
    Abstract: In a riding concrete finishing trowel, a stabilizer is operatively disposed between the frame and either the gearbox or a structure that is coupled to the gearbox. Such a stabilizer has been found to reduce the effects of rotor assembly vibration on the trowel greater than would be expected and even to improve steering response. In one embodiment, the stabilizer takes the form of a gas spring located between the frame and the pitch control post. Preferably, this gas spring is located relatively close to the top of the pitch control post so as to take advantage of the mechanical advantage offered by the spacing between that location and the gearbox.
    Type: Application
    Filed: January 7, 2009
    Publication date: July 23, 2009
    Inventors: Todd J. Lutz, Richard D. Goldberg
  • Publication number: 20090169300
    Abstract: A high performance, multiple rotor, hydraulically driven riding trowel for finishing concrete includes a rigid trowel frame with two or more downwardly-projecting, bladed rotor assemblies that frictionally engage the concrete surface. The rotor assemblies are tilted with double acting hydraulic cylinders to effectuate steering and control. Double acting hydraulic cylinders also control blade pitch. Hydraulic pressure to the rotors is monitored and controlled by an unloader valve system that monitors drive pump pressure with a shuttle valve to derive an unloader pilot signal. A sequence valve responds to the unloader pilot signal to control a pressure valve that bypasses the normal foot control valve in an overpressure situation. The pressure control head signal normally applied to the hydraulic drive motor control heads is modified with a feedback signal to automatically control the associated pump swash plates.
    Type: Application
    Filed: December 22, 2008
    Publication date: July 2, 2009
    Inventors: J. Dewayne Allen, Timmy D. Guinn, Mike Woodside, Michael W. McKean, Jack C. Wilson
  • Patent number: 7530762
    Abstract: A method and apparatus for finishing cured concrete floors using a riding trowel to which large diameter pans are attached having a balanced distribution of abraders releasably secured to the undersides of the pans. The individual abraders are preferably individually spring biased so as to maintain full contact with the floor when traversing undulations of the floor.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: May 12, 2009
    Inventors: Johnny Reed, Paul Copoulos