Mowing cutter unit for mower

Details Mowing cutter unit for mower Mowing cutter unit for mower

1992-11-17

1994-07-26

Melius, Terry Lee

Harvesters

Cutting

Rotating-cutting-disk type

56295, 56DIG17, A01D 3482

Patent

active

053317955

ABSTRACT:
A mowing cutter unit for a mower including a rotary cutter and a stationary cutter coaxially overlapped to each other, the rotary cutter is formed in an approximately polygonal shape in plan view and is formed with recessed cutting portions each being curved in an approximately doglegged shape toward the rotational direction at each vortex portion thereof; and the stationary cutter is formed with projecting cutting portions slidably contacted with respective recessed cutting portions of the rotary cutter on the peripheral edge in such a manner that it is shaped in a loosely circular arc from the cutting base to the cutting leading edge and a crossing angle at which the projecting cutting portion is rubbed with a grass pushing-out portion of the recessed cutting portion is larger than a crossing angle at which it is rubbed with a grass taking-in portion of the recessed cutting portion.

REFERENCES:
patent: 3135081 (1964-06-01), Booth
patent: 4055890 (1977-11-01), Seibold
patent: 4310999 (1982-01-01), Onoue
patent: 4520619 (1985-06-01), Doi et al.
patent: 4706446 (1987-11-01), Doi et al.
patent: 4890448 (1990-01-01), Doi
patent: 4987732 (1991-01-01), Terai et al.
patent: 4999985 (1991-03-01), Doi
patent: 5054276 (1991-10-01), Terai et al.

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