Harvesters – Cutting – Rotating-cutting-disk type
Patent
1989-12-26
1991-03-19
Dang, Hoang C.
Harvesters
Cutting
Rotating-cutting-disk type
30240, 56295, A01D 3473
Patent
active
049999850
ABSTRACT:
This invention relates to an improvement of a mowing blade unit in which a rotary blade and a fixed blade are overlapped to each other in coaxial relation to each other so as to cut the weeds under rotation of the rotary blade, wherein the circumferential edges of the rotary blade are formed with concave-shaped blade positions curved toward its rotating direction, the circumferential edges of the fixed blade are formed with a plurality of convex-shaped blade portions oppositely and slidably contacting with the concave-shaped blade portions with a specified holding angle, thereby the concave-shaped blade portions at the circumferential edges of the rotary blade take weeds into areas between each of the convex-shaped blade portions at the circumferential edges of the fixed blade and the rotary blade to hold the weeds with the convex-shaped blade portions with a specified holding angle and to make a positive cutting of the weeds to improve an efficiency of cutting operation.
REFERENCES:
patent: 2212057 (1940-08-01), Waller
patent: 2973616 (1961-03-01), Richard
patent: 3618304 (1971-11-01), Hundhausen
patent: 4520619 (1985-06-01), Doi et al.
patent: 4733525 (1988-03-01), Pellenc et al.
patent: 4890448 (1990-01-01), Doi
Ahresty Corporation
Dang Hoang C.
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