A - Human Necessities – 01 – D
Patent
A - Human Necessities
01
D
56/58
A01D 34/73 (2006.01)
Patent
CA 1208024
Abstract of the Disclosure A mowing rotary sawtoothed cutter adapted to be attached to a mower for mowing or cutting grass, shrubs or trees, which comprises a thin disk having a central hole, and a suitable number of triangular small cutting blades disposed around the outer periphery of the disk and having cutting edges extending from the apex of the triangle along the both lateral edges thereof, half of the small cutting blades facing in one direction and the residual half of the small cutting blades facing in the other direction. In a preferred embodiment, the cutter includes a plurality of large cutting blades in the form of a rectangle or the like having cutting edges on the opposite lateral edges thereof, and a series of the small cutting blades facing one direction and a series of the small cutting blades facing the other direction are disposed in opposed relation to each other between the large cutting blades. The cutter of the invention has the feature that at the same time as the cutting edges on one side perform mowing or cutting, the cutting edges on the other side are sharpened by hard substances scattered around or sticking to the rhizomes of grass and shrubs, thereby allowing turned-over use of the cutter several times, thus the use-life without manual sharpening is greater than 10 times that of a conventional cutter.
433608
Aono Toshio
Osler Hoskin & Harcourt Llp
LandOfFree
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