Class / Patent application number | Description | Number of patent applications / Date published |
144240120 | Stump removing | 18 |
20080196791 | TREE STUMP GRINDING TEETH - Tree stump grinding teeth for use in tree stump grinding wheel assemblies and tree stump grinding wheel assemblies that include one or more such grinding teeth. In the preferred embodiment of the invention, the grinding tooth includes a mounting base having a substantially flat surface from which a plurality of cleats project. The cleats are adapted to be received in corresponding bores formed in the wheel. A resilient impact pad is positioned between the mounting base of the grinding tooth and the wheel. The resilient impact pad protects the surface of the wheel from impact forces applied to the grinding tooth. | 08-21-2008 |
20090101234 | STUMP CUTTER WITH A WEIGHT CENTERED POWER TRAIN - A stump cutter configured for improved stability includes a frame structure, an engine, a boom with a proximal end and distal end, and a grinding wheel rotatably mounted to the distal end of the boom. The boom is pivotally mounted to the frame structure at its proximal end typically by means of a turntable, hydraulic actuators and ears. Preferably, the engine is pivotally mounted between the ears about a generally horizontal axis so that the engine is generally weight-balanced during pivoting. The horizontal axis preferably passes through or adjacent the engine's center of mass. | 04-23-2009 |
20090159155 | Tree Stump Grinding Machine - A tree stump grinding machine includes a rotor having at least one or more peripheral slots therein and defining a rotor plane. One or more teeth are removably disposed in corresponding slots and form a primary cutting face. A secondary cutting face is formed by a protrusion on the tooth and/or a keeper plate associated with the tooth. The secondary cutting face may be formed by a protrusion on the keeper plate oriented perpendicular to the plane of the rotor, and/or the secondary cutting face may be disposed circumferentially and/or radially offset with respect to the primary cutting face on either of both of the tooth and the keeper plate. | 06-25-2009 |
20100319808 | Tree Stump Coring Apparatus and Method - A tree stump coring apparatus and method of coring a tree stump using the same is provide. The tree stump coring apparatus includes an elongated cylindrical cutting blade of a hollow tubular body rotatable about a vertical axis with cutting blades on an open lower end of the cutting blade for mounting on a vehicle such as a skid steer loader which provides a means to rotate the cutting blade and a means to move the cutting blade in a generally vertical direction downwardly to core a tree stump and upwardly to remove the tree stump core from the ground. | 12-23-2010 |
20110100508 | Stump Cutter - A stump cutter comprising a cutting head that rotates about a generally vertical axis is provided. The cutting head comprises a plurality of cutting blades that are angled with respect to a backing plate of the cutting head. At least two of the plurality of cutting blades are further angled radially with respect to a center of the cutting head, such that the centermost edges of the cutting blades extend further into a stump than the outermost edges of the cutting blades. The stump cutter is powered solely by the PTO of a tractor. | 05-05-2011 |
20120175018 | STUMP GRINDER WITH LATERALLY OFFSET GRINDING ARM OPERATED BY SINGLE JOYSTICK - A stump grinder has a grinding arm that durably mounts a rotatable grinding wheel by securing the drive shaft of a motor to the grinding wheel such that a pair of bearings within the motor support one side of the grinding wheel and by supporting the other side of the grinding wheel with a stub shaft received within a third bearing. The grinding arm is laterally offset on the frame of the stump grinder to have a swing angle that is not symmetrical relative to the width of the frame, but with the swing angle starting at one side of the frame and then traversing across substantially the entire width of the frame to improve the ability of the operator to see the grinding wheel. A single joystick is movable in orthogonal directions corresponding to desired up and down and side-to-side pivoting motions of the grinding arm. The joystick includes a depressible trigger for starting and stopping the operation of the grinding wheel. | 07-12-2012 |
20130056113 | Stump Destruction Apparatus - The present disclosure provides an apparatus comprising a frame supporting a motor and a gearbox, wherein the motor and the gearbox are connected to one another via coupling and further wherein the gearbox is oriented ninety (90) degrees from its normal operating orientation; and a bit assembly, the bit assembly comprising a shaft, having a first end and a second end, wherein the first end is attached to the gearbox via a gearbox output flange, a main bit assembly further comprising an upper cutting blade and a lower cutting blade attached to the shaft, wherein the lower cutting blade is located closer to the second end of the shaft than the upper cutting blade, an adjustable depth cutting guide attached to a bottom portion of the upper cutting blade, and a lateral cutting blade attached at the far end of the upper cutting blade; and a guide bit assembly wherein the apparatus is attachable to a self-propelled vehicle. In another aspect, the present disclosure provides a drive system comprising a hydraulic motor, wherein said motor further comprises a torque modulation means and a first splined drive shaft; a gearbox further comprising a second splined drive shaft; a coupling connecting the gearbox to the motor; and an internal spline coupling adapted to receive both the first splined drive shaft and the second splined drive shaft. | 03-07-2013 |
20130061984 | MULTI-FUNCTIONAL AND MODULAR TREE REMOVAL AND MAINTENANCE APPARATUS AND RELATED METHODS - A lifting apparatus is provided. The apparatus includes a primary body that has a support for supporting a person, and a secondary body. A releasable coupling provides selective coupling between the primary and secondary bodies. The lifting apparatus has (a) a first condition in which the primary body is coupled to the secondary body, and (b) a second condition in which the primary body is not coupled to the secondary body, and is configured to be releasably coupled to a vehicle. | 03-14-2013 |
20140261888 | MULTI-FUNCTIONAL AND MODULAR TREE REMOVAL AND MAINTENANCE APPARATUS AND RELATED METHODS - A lifting apparatus is provided. The apparatus includes a primary body that has a support for supporting a person, and a secondary body. A releasable coupling provides selective coupling between the primary and secondary bodies. The lifting apparatus has (a) a first condition in which the primary body is coupled to the secondary body, and (b) a second condition in which the primary body is not coupled to the secondary body, and is configured to be releasably coupled to a vehicle. | 09-18-2014 |
20140283950 | STUMP CUTTER - The present disclosure provides a device and method that enable the efficient reduction of stumps. In one embodiment the stump removal methods and devices according to the present disclosure allow the operator to have a clear view of the work area during operation, and the ability to move the reduction device through a wide range of motion during operation. In one embodiment, the material reduction tool pivots relative to the chassis in the vertical plane about multiple pivot points. In some embodiments the device includes a retractable auxiliary control panel located at the end of the device opposite the material reduction tool. The control panel enables the operator to direct the movement of the device from the end of the device and thereby enable the device to maneuver through narrow spaces. | 09-25-2014 |
20140311628 | STUMP GRINDER WHEEL CONFINEMENT SYSTEM AND METHOD THEREFOR - A stump grinder for a powered cutting wheel attached to a boom is disclosed, wherein the improvement relates to a cutting wheel confinement system which includes a cutting wheel further comprising a coaxially disposed spindle extending from an unsupported side, and a boom which further comprises an opening which is centrally disposed with the spindle and sized so as to allow the spindle to freely rotate therein without contact when the cutting wheel is not rotating, and to allow for a predetermined amount of eccentric motion of the spindle before the spindle makes contact with the first opening, and which prevents more than a predetermined amount of eccentric motion of the spindle by confining the eccentric motion of the spindle via contact with the first opening. | 10-23-2014 |
20140326362 | STUMP AUGER - The present concept a stump auger is used for removing tree stumps. The stump auger includes a main shaft connected at a top end to a drive mechanism for turning the shaft about a vertical axis. The main shaft is connected at a bottom end to a cone top wherein the cone including a thread extending about the outer surface of the cone. The stump auger further includes at least two boring bars, each boring bar includes third blades mounted in stepped offset side by side fashion wherein the inner face of one third blade abuts the outer face of the adjacent third blade. The third blades oriented parallel to a bar axis which defines a boring bar angle theta relative the horizontal, and the third blades also include a blade edge for shaving, grinding and chipping the tree stump as the stump auger is rotated about the vertical axis. | 11-06-2014 |
20150083275 | CUTTING SHAFT FOR VERTICAL STUMP GRINDER - The invention relates to a stump grinder that rotates about a vertical axis and includes an improved cutting shaft. The improved cutting shaft includes a base portion attached to a drive source, and a grinding shaft attached to and extending downwardly from the base portion. The grinding shaft includes replaceable cutting teeth and a replaceable grinding tip. | 03-26-2015 |
20150136276 | STUMP CUTTING APPARATUS - A cutting wheel for use with a stump cutting apparatus; wherein the cutting wheel includes first and second sections. The first and second sections including a support member, with a tool holder attached to the support member. Each of the first and second sections having a notch therein, the respective notches cooperating to form a joint between the first and second sections. | 05-21-2015 |
20150373930 | STUMP GRINDER WITH LATERALLY OFFSET GRINDING ARM OPERATED BY SINGLE JOYSTICK - A stump grinder has a grinding arm that durably mounts a rotatable grinding wheel by securing the drive shaft of a motor to the grinding wheel such that a pair of bearings within the motor support one side of the grinding wheel and by supporting the other side of the grinding wheel with a stub shaft received within a third bearing. The grinding arm is laterally offset on the frame of the stump grinder to have a swing angle that is not symmetrical relative to the width of the frame, but with the swing angle starting at one side of the frame and then traversing across substantially the entire width of the frame to improve the ability of the operator to see the grinding wheel. A single joystick is movable in orthogonal directions corresponding to desired up and down and side-to-side pivoting motions of the grinding arm. The joystick includes a depressible trigger for starting and stopping the operation of the grinding wheel. | 12-31-2015 |
20150373931 | STUMP GRINDER WITH LATERALLY OFFSET GRINDING ARM OPERATED BY SINGLE JOYSTICK - A stump grinder has a grinding arm that durably mounts a rotatable grinding wheel by securing the drive shaft of a motor to the grinding wheel such that a pair of bearings within the motor support one side of the grinding wheel and by supporting the other side of the grinding wheel with a stub shaft received within a third bearing. The grinding arm is laterally offset on the frame of the stump grinder to have a swing angle that is not symmetrical relative to the width of the frame, but with the swing angle starting at one side of the frame and then traversing across substantially the entire width of the frame to improve the ability of the operator to see the grinding wheel. A single joystick is movable in orthogonal directions corresponding to desired up and down and side-to-side pivoting motions of the grinding arm. The joystick includes a depressible trigger for starting and stopping the operation of the grinding wheel. | 12-31-2015 |
20160183481 | CENTER-CUT STUMP GRINDER WITH WIDE LATERAL REACH - A powered stump grinder at the center front of a walk-behind machine is disclosed. The grinder machine has a front cutter head assembly pivotally connected to the walk-behind machine by a central pivot assembly. The central pivot assembly is securely, pivotally connected to the center front part of the frame or body of the machine, for example, by temporary securement to the frame or body via a conveniently removable mounting plate system. The central pivot assembly includes a vertical pivot axle/axis, for lateral movement of the connected front cutter head assembly. Generally horizontal hydraulic cylinders, extending between the mounting plate and left and right lateral portions of the pivot assembly, serve to control lateral movement of the connected front cutter head assembly by pivoting the pivot assembly, which in turn pivots the connected cutter arm, and hence, the cutter head assembly. A more vertical hydraulic cylinder on the central pivot assembly has a ram which is connected to and controls vertical movement of the cutter arm, and hence the front cutter head assembly. | 06-30-2016 |
20160374276 | Stump Destruction Apparatus - A bit assembly comprising a main bit assembly, which further comprises one or more cutting blades, said one or more cutting blades further comprising a lower cutting blade and an upper cutting blade; a shaft comprising a lower and an upper end; a guide bit assembly, wherein the guide bit assembly is attached the lower end of the shaft. | 12-29-2016 |