Stump grinder with laterally offset grinding arm operated by single joystick
US10292341B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2015 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Sep 2, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G23/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.