| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 144334000 | Stump removing | 6 |
| 20090090434 | METHOD AND APPARATUS FOR CONTROLLING THE OPERATION OF A STUMP CUTTER - A stump cutter controller and operator presence system includes one or more capacitive sensors in each of the three control levers that control movement of the cutter wheel. A sensor circuit measures changes in the capacitance of the sensors. The controller automatically disengages a drive clutch and applies a brake to the cutter wheel when the controller senses that an operator has left the operating station—which is assumed when the operator has not touched any one of the three control levers of the operator station for a predetermined time. The controller logic is set to allow the clutch to remain engaged during a delay period, of predetermined duration, to permit the operator to move a hand off of one control lever to another control lever. Also, a grace period, of varying duration based on the speed of the cutter wheel, may be provided during which the clutch is reengaged if an operator returns to the controls. | 04-09-2009 |
| 20100314001 | 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. | 12-16-2010 |
| 20120111453 | TREE STUMP REMOVAL DEVICE - A tree stump removal device is disclosed. The device includes an annular housing having cutters attached thereto. A method of removing a tree stump is disclosed that includes lowering a tree stump removal device into the ground surrounding the tree stump to severe some or all of the horizontal roots extending from the tree stump. | 05-10-2012 |
| 20130000784 | STUMP GRINDER HAVING AN AUTOMATIC DEPTH CONTROL SYSTEM - An automatic depth controlled cutting assembly for a stump grinder includes a cutting assembly operatively attached to a stump grinder for engaging and grinding a stump, an actuating assembly to actuate movement of the cutting assembly relative to the stump, and an automatic depth control system cooperating with the actuating assembly to automatically control a depth of the cutting assembly relative to the stump. | 01-03-2013 |
| 20140174604 | TREE REMOVAL DEVICE AND METHOD - The device may be coupled to a tractor and comprises a housing comprising vertical walls and a sliding arrangement, and a shaft, base plate, stabilizing portion, motor, and bit assembly. A coupling plate may be coupled to a cooperative coupling plate of the tractor. The shaft extends vertically from the motor to the base plate. The bit assembly is coupled to the lower end of the shaft. The stabilizing portion comprises a tubular member extending from the baseplate. The method of removing a tree comprising a trunk and roots, the roots being below ground, comprises the steps of engaging the trunk with a stabilizer; bending said trunk with the stabilizer; securing the trunk with said stabilizer; inserting a rotating bit into the ground; driving the rotating bit into an area occupied by said roots; and engaging said roots with the rotating bit assembly. | 06-26-2014 |
| 20150068645 | TREE STUMP REMOVAL DEVICE - A tree stump removal device is disclosed. The device includes an annular housing having cutters attached thereto. A method of removing a tree stump is disclosed that includes lowering a tree stump removal device into the ground surrounding the tree stump to severe some or all of the horizontal roots extending from the tree stump. | 03-12-2015 |
