Cutting assembly for high-speed rotary grass trimming device

Details Cutting assembly for high-speed rotary grass trimming device Cutting assembly for high-speed rotary grass trimming device

1988-03-14

1989-09-05

Johnson, Richard J.

Harvesters

Cutting

Rotating-cutting-disk type

56295, 172 41, A01D 3468

Patent

active

048626821

ABSTRACT:
A blade assembly for cutting herbaceous terrestrial vegetation at a cutting speed of from about 1,000 to about 10,000 revolutions per minute, wherein said blade assembly is comprised of a U-shaped blade which has a Rockwell C hardness of from about 37 to 40, a flare resistance of less than about 15 degrees, and a bending resistance of less than about 5 degrees, and wherein said U-shaped blade is an integral, symmetrical member comprised a vertically-extending left cutting edge, a vertically extending right cutting edge, and a rotating support member connected to said left and right cutting edges, wherein:

REFERENCES:
patent: 2670537 (1954-03-01), Campbell
patent: 2888084 (1959-05-01), Trecker
patent: 3174224 (1965-03-01), Rousselet
patent: 3395521 (1968-08-01), Crockett
patent: 3686841 (1972-08-01), Mager
patent: 3762230 (1973-10-01), Steil
patent: 3938249 (1976-02-01), Chacon
patent: 4213504 (1980-07-01), Scheinder
patent: 4293041 (1981-10-01), Holmstadt
patent: 4479302 (1984-10-01), Richter
patent: 4501332 (1985-02-01), Straayer

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