Mowing machine using a power-transmission mechanism incorporated with an annular gear
AssigneeMatsuura Sangyo Co., Ltd.
InventorMasatoshi Matsuura
Life of this patent
Estimating the term…
Abstract
A mower with a power-transmission mechanism made up with an outer ring gear and an annular gear set inside the outer ring gear with the outer teeth meshed with inner teeth of the outer ring gear. Inner teeth of the annular gear are meshed with the teeth of a central gear installed inside the annular gear. The number of teeth of the three gears are slightly different, and the gears are arranged so that the outer ring gear and the central gear are on a same center axis with the annular gear off the center axis. By driving the annular gear, the outer ring gear and the central gear are rotated in the opposite direction. Accordingly, blade wheels mounted on these two gears are turned in the opposite direction, thus cutting the grass efficiently.
Claims3
A mowing machine using a power-transmission mechanism comprising a large ring gear with teeth on the inside, an annular gear having teeth on both inner and outer circumferences, and a small gear having the same axis as the large ring gear, in which:
- the ring gear and the annular gear are meshed with each other with a very small difference in the number of teeth between the ring gear and the outer circumference of the annular gear, the annular gear and the small gear are meshed with each other at an opposite position from said meshing position of the ring gear and the annular gear with a very small difference in the number of teeth between the inner circumference of the annular gear and the small gear;
- a drive shaft from a power source and an eccentric shaft coupled to the drive shaft on which a bearing is mounted to transmit the revolution of the shaft to the annular gear in a form of an eccentric revolution, while bearings are mounted on the drive shaft to support the ring gear and the small gear, one of which is fixed to an upper blade wheel and the other is fixed to a lower blade wheel, said upper and lower blade wheels rotate in opposite directions while sliding on each other.
Dependencies are inferred from the claim text.