| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 305143000 | WITH MEANS FOR TENSIONING TRACK BY MOVING AT LEAST ONE ENDWHEEL | 28 |
| 20090001809 | TENSION MANAGEMENT SYSTEM FOR AN ENDLESS TRACK OF A WORK MACHINE - A tension management system for generating tension in an endless track of a tracked work machine. The tension management system comprises a biasing element, an idler wheel, a swing link, an idler arm, and a pivotal bracket linking the biasing element with the idler arm. The biasing element generates force that is translated via the biasing arm to the pivotal bracket. The pivotal bracket provides a mechanical advantage in the translation of the force that enables the force exerted upon the swing link to be greater than the force generated by the biasing element. The idler arm connects the pivotal bracket to the swing link and exerts force on the swing link causing it to pivot. The idler wheel is mounted on the swing link and exerts force, generating tension, in the endless track as the swing link pivots. The tension management system enables a greater force to be exerted on the swing link than is generated by the biasing element, allowing for the use of smaller biasing elements than previously possible in conventional designs. | 01-01-2009 |
| 20090200862 | Idler recoil assembly and machine using same - A track type tractor includes a modular track roller frame made up of easily assembled sub-components. Among these sub-components are an idler recoil assembly that may be slide into, and then fastened to a housing as a unit to create a track roller frame assembly. The idler recoil assembly includes a gas spring telescoping section and a length adjustment telescoping section located between a housing contact end and a yoke contact end. Although suspended above a floor of the housing, the idler recoil assembly may only be attached to the housing in a plane via an array of fasteners that surround a shaft axis. The housing encloses the idler recoil assembly against debris entry, but includes an access cover for servicing the gas spring and/or adjusting track tension via the length adjustment feature. | 08-13-2009 |
| 20120274130 | Track Tensioning System - A tensioning system for a tracked vehicle. The present invention provides for adjusting tension of a track by moving the sprocket relative to the rollers in a substantially vertical direction. The system comprises a sprocket assembly, a roller assembly, a track, and a tension adjustment assembly. The tension adjustment assembly includes a tension bolt threaded through a tension nut. The bolt threads through the nut and contacts the roller assembly. As the bolt is threaded or unthreaded, the sprocket assembly is moved relative to the roller assembly in a substantially vertical direction. As the assemblies move relative to each other, tension in the track is resultantly adjusted. | 11-01-2012 |
| 20120326496 | System and Method for Tensioning a Traction Band and Traction Assembly Therewith - A system and a method for controllably tensioning a traction band mounted to a traction assembly, and a traction assembly comprising such a system, are disclosed. The system is typically mounted at the front or at the rear of the support frame of the traction assembly such as to support one or more idler wheels. The tensioning system generally comprises a clamping ring assembly having received therein a rotatable cylindrical member. The cylindrical member supports an axle which is eccentrically located with respect to the center axis of the cylindrical member, and which pivotally supports one or more idler wheels. By rotating the cylindrical member within the clamping ring assembly using a torquing tool, the tension of the traction band about the wheels (i.e. drive wheel, idler wheels, and support wheels) of the traction assembly can be controllably adjusted. | 12-27-2012 |
| 20130038119 | SEGMENTED SPROCKET ASSEMBLY SYSTEM - A sprocket assembly for a vehicle having a chassis and at least one endless track for engaging a ground surface. The track being movably coupled to the chassis and driven by the sprocket assembly. The sprocket assembly including at least one sprocket segment, a hub rotationally coupled to the chassis and a fastening system configured to displace some material portion of the sprocket segment when the sprocket segment is attached to the hub. | 02-14-2013 |
| 305144000 | Condition responsive (e.g., inclination, speed, operator command) | 3 |
| 20130119754 | ENDLESS BELT TENSIONER SYSTEM AND METHOD OF USE THEREOF - An endless belt tensioner system adapted to dynamically apply a tensioning force on a ground-contacting endless belt of a vehicle is provided, the tensioning force being managed to prevent the endless belt to disengage from an operating configuration when the suspension is actuated. A vehicle and a method of use thereof are also provided. | 05-16-2013 |
| 20130181507 | ENDLESS BELT TENSIONER SYSTEM AND METHOD OF USE THEREOF - An endless belt tensioner system adapted to apply a minimum tensioning force on a ground-contacting endless belt of a vehicle is provided, the minimum tensioning force being managed to prevent the endless belt to disengage from an operating configuration. A vehicle and a method of use thereof are also provided. | 07-18-2013 |
| 20150329158 | Road Construction Machine, Crawler Track Unit Of A Road Construction Machine, As Well As Method For Tensioning A Chain Of A Crawler Track Unit - In a road construction machine, in particular a road milling machine ( | 11-19-2015 |
| 305145000 | Having hydraulic adjusting means | 14 |
| 20080224535 | TRACK BELT TENSION SYSTEM AND METHOD - A machine including: a frame assembly including one or more drive wheels and one or more idler wheels affixed to the frame assembly; a track belt disposed about the drive and the idler wheel; a hydraulic actuator arrangement including a hydraulic cylinder and accumulator affixed to the idler wheel that provides a force to tension the track belt; and a tension management system in operable communication with the hydraulic cylinder that maintains a pressure inside the hydraulic cylinder within a specified range. | 09-18-2008 |
| 20110309673 | ARRANGEMENT FOR CONTROLLING A TRACK TENSION WHEEL OF TRACKED VEHICLE - Arrangement for controlling a track tension wheel of a tracked vehicle, comprising a guide arm system ( | 12-22-2011 |
| 20120019056 | Chain Drive Assembly and Work Machine - The present disclosure relates to a chain drive assembly for a work machine, in particular for a crawler-mounted crane or a crawler excavator, having a drive crawler track, at least one displaceably supported sprocket wheel, in particular a guide wheel or idler wheel, and at least one tensioning device to tension the crawler track, wherein at least one abutment is provided which bounds the displacement of the displaceably supported sprocket wheel. The present disclosure further relates to a work machine, in particular to a crawler-mounted crane or a crawler excavator, having such a chain drive assembly. | 01-26-2012 |
| 20120080937 | Apparatus for Controlling Tension of Track - The present invention relates to an apparatus for controlling tension of a track, and more particularly to an apparatus for preventing a track wheel from separating due to an uneven road surface and obstacles on the road surface by minimizing space between a moving idler and roller when controlling the tension of the track, and for supporting the weight of a machine more safely by maximizing the space between a rear roller and a front roller. To this end, the present invention is characterized by: a track frame structure in which the idler and the front roller move together when controlling the tension of the track; and a damping member for absorbing external shock, wherein the idler is fixed in an idler frame, the front roller is fixed in a roller frame, and the buffer member is positioned between the idler frame and the roller frame. | 04-05-2012 |
| 20140070604 | Automatic Tensioning System Of Tracks Of A Paver Finisher - A tensioning system for a traction track of a machinery via a hydraulic cylinder applying a tensioning force on at least one of the wheels on which the track is wound according to a closed chain configuration in which the hydraulic cylinder is fed with different pressures according to the traction direction, in a first traction direction the feeding pressure of the tensioning hydraulic cylinder being a first pressure approximately corresponding to the pressure which is generated by a pump which is present on a closed circuit feeding the traction devices, in a second traction direction the feeding pressure of the tensioning hydraulic cylinder being a second pressure | 03-13-2014 |
| 20140265549 | Track Tensioner - The track tension of a tracked vehicle is actively controlled by a track tensioner system that is positioned behind or within an idler wheel of a tracked vehicle. The system employs no exposed hydraulic line and is operable to default to a passive tensioning mode in the event of a system failure. The hydraulic circuit of the track tensioner system is powered by the rotation of the idler wheel inside which the system resides. | 09-18-2014 |
| 20140284996 | IDLER ASSEMBLY FOR A TRACK ROLLER FRAME - The present disclosure describes an idler assembly for a track roller frame. The idler assembly may provide travel with reduced vibrations in a track type machine. The idler assembly may comprise a hydraulic cylinder having a piston rod extendable along a linear actuation path; an idler wheel movable along a linear tensioning path inclined relative the linear actuation path; and a coupling mechanism coupling the piston rod to the idler wheel wherein the movement of the piston rod along the linear actuation path actuates the idler wheel to move along the linear tensioning path. | 09-25-2014 |
| 305146000 | Including spring device (e.g., coil spring) | 5 |
| 20090072617 | Automatic Track Tensioning System - An automatic track tensioning system is provided for use with a track-type work vehicle for automatically tensioning an endless track chain of the work vehicle. | 03-19-2009 |
| 20090273233 | MODULAR TRACK TENSIONING SYSTEM - A spring loaded track tensioning assembly for a track on a track driven vehicle has a spring subassembly that is retained on a spring shaft under a preload with a first fixed spring retainer and a second slidable spring retainer. The spring shaft has an outer end that extends beyond the second spring retainer and the outer end is slidably received in a bore in a piston or actuator shaft of a grease cylinder, with the end of the actuator shaft bearing on the second spring retainer. The grease cylinder contacts and applies a force to the second spring retainer, for initial positioning of the tensioning assembly, and additional loads on the first spring retainer that compress the spring cause the outer end of the spring shaft to slide in the bore of the actuator shaft as the second spring retainer slides along the spring shaft. | 11-05-2009 |
| 20100237691 | Road Construction Machine, Crawler Track Unit Of A Road Construction Machine, As Well As Method For Tensioning A Chain Of A Crawler Track Unit - In a road construction machine, in particular a road milling machine ( | 09-23-2010 |
| 20160200379 | Track Recoil System | 07-14-2016 |
| 305147000 | Coil spring housed within hydraulic cylinder | 1 |
| 20090289496 | CHAIN TENSIONING DEVICE - A device for tensioning chains on crawler-type or tracked vehicles, in particular the chains of hydraulic excavators, comprises a first cylinder arranged in an area of the chassis for the tracked vehicle, and operatively connected via a piston rod to a guide wheel to tension the chain. A second cylinder forms a spring cylinder and is operatively connected to the first cylinder. The second cylinder concentrically encloses the first cylinder to form a double cylinder and each cylinder is provided with a separate hydraulic connection. At startup of the tracked vehicle, the hydraulic connections of the double cylinder are admitted with a specifiable pre-tensioning pressure. The spring cylinder can be moved with maximum spring travel to its end position because of its larger cross-sectional surface, and the tensioning cylinder pre-tensions the chain with a force that corresponds to the pre-tensioning pressure. | 11-26-2009 |
| 305148000 | Including gas recoil | 1 |
| 20120007420 | Combination Idler Recoil and Tension Adjustment Assembly and Method for Identifying Source of Leakage in Same - An idler recoil and tension adjustment assembly is disclosed which provides a visual indication to the operator when either the idler recoil section or the tension adjustment section has developed a leak. The idler recoil and tension adjustment assembly includes a housing that accommodates a reciprocating shaft that includes both an idler recoil section and a tension adjustment section. The tension adjustment section is in communication with the grease port and the idler recoil section is in communication with a gas port. The grease and gas ports are coupled to the reciprocating shaft at an attachment section disposed between the idler recoil and tension adjustment sections. A blocking plate is slideably mounted to the attachment section and a shaft or roller is provided inside the housing so that when a leak develops in one of the sections the blocking plate may provide a visual indication to the operator as to which section, the idler recoil or the tension adjustment, is experiencing a leak. | 01-12-2012 |
| 305149000 | With vent or relief valve | 1 |
| 20080265666 | Hydraulic recoil and adjustment mechanism - A hydraulic recoil and adjustment mechanism is provided for a track assembly having an idler. The mechanism includes a recoil cylinder configured to contain a quantity of hydraulic fluid. A rod element is coupled to the idler and configured to reciprocate within the recoil cylinder. The idler is configured to exert a force on the rod element to drive hydraulic fluid from the recoil cylinder when the force exceeds a predetermined force. An accumulator includes a piston and is configured to contain a quantity of gas under pressure on one side of the piston, and to receive from the recoil cylinder a quantity of the hydraulic fluid on the other side of the piston when the force exceeds the predetermined force. An adjustment mechanism includes a reservoir for hydraulic fluid, and is configured to deliver hydraulic fluid from the adjustment mechanism to the recoil cylinder under sufficient pressure to move the rod element and the idler. A flow path is provided for hydraulic fluid between the recoil cylinder and the accumulator, and between the recoil cylinder and the adjustment mechanism. | 10-30-2008 |
| 305151000 | Biased by spring only | 1 |
| 20120062025 | TRACKLAYING GEAR - In a tracklaying gear with a frame having an idler wheel linear guide in which at least one guide piece holding the idler wheel axle is movable, and on which a tensioning means of a tensioning device supported in the frame can act in the guidance direction, at least one mechanically guided and centered elastomer spring body is installed to bulge under axial compression, such that the spring body can be readjusted, the elastomer spring body consisting of an elastomer material largely incompressible as a spring. | 03-15-2012 |
| 305153000 | Longitudinally adjustable | 4 |
| 20110248562 | Crawler Traction Device - A crawler traction device for a crawler vehicle, in particular a tractor, the device having a carriage, a drive sprocket rotating about a first axis, an idler wheel rotating about a second axis parallel to the first axis. The track is looped about the drive sprocket and the idler wheel and meshes with the drive sprocket along a meshing arc. The traction device has a noise and vibration damping device having an auxiliary roller which rotates about a third axis parallel to the first axis and is eccentric with respect to the drive sprocket as well as smaller in diameter than the drive sprocket. The noise and vibration damping device only cooperates with the track along a portion of the track located, in use, immediately upstream from the meshing arc and interposed between the auxiliary roller and the terrain. | 10-13-2011 |
| 20130154346 | IDLER KEY FOR TRACK ROLLER ASSEMBLY - An idler key for a track roller assembly is disclosed. The idler key may have a flange portion, and an elongated protrusion extending from the flange portion in a direction generally orthogonal to the flange portion. The idler key may also have at least one shoulder disposed between the flange portion and a base of the elongated protrusion. The at least one shoulder may have at least one machined surface configured to transfer load to a mating component. | 06-20-2013 |
| 20130154347 | TRACK ROLLER ASSEMBLY HAVING ADJUSTABLE IDLER WHEEL - A track roller assembly for a track type machine is disclosed. The track roller assembly may have a yoke member with a first arm and a second arm spaced apart from the first arm, and an idler wheel rotatably disposed between the first and second arms of the yoke member. The track roller assembly may also have a frame configured to receive at least a portion of the yoke member, and at least one idler key configured to extend through an opening in the frame and engage a lengthwise slot in at least one of the first and second arms. | 06-20-2013 |
| 305154000 | Including threaded tension adjuster | 1 |
| 20130181508 | TRUCK TRACK DRIVE - A truck track drive can include two rollers. The truck track drive can also include a tread configured to pass over top and bottom of a dual rear wheel assembly on a truck and to be moved by rotation of the dual rear wheels. The track drive can also include a compulsory drive unit. | 07-18-2013 |
| 305155000 | With intermediate support member (e.g., linkage) | 1 |
| 20220135153 | TRACK ASSEMBLY FOR A VEHICLE - A track assembly for a vehicle has a frame; a drive wheel rotatably mounted to the frame; an idler wheel mount pivotally connected to the frame, the idler wheel mount being selectively pivotable between an operating position and a released position; a lock selectively locking the idler wheel mount in the operating position; an idler wheel rotationally connected to the idler wheel mount, the idler wheel being pivotable with the idler wheel mount; and an endless track driven by the drive wheel around the frame. In the operating position of the idler wheel mount, the idler wheel tensions the endless track. Pivoting the idler wheel mount from the operating position to the released position releases at least some tension from the endless track. A vehicle having the track assembly and a method for installing an endless track having derailed from other components of a track assembly are also disclosed. | 05-05-2022 |
