Earth working – Lawn aerator or perforator – or plug remover
Patent
1991-09-20
1993-02-02
Corbin, David H.
Earth working
Lawn aerator or perforator, or plug remover
56256, 30348, 30DIG5, A01B 4502
Patent
active
051831201
ABSTRACT:
With a view to accelerating growth of lawn in the fairway of golf course, or other lawn-covered ground, there is provided a lawn cutting apparatus which forms incised grooves of a predetermined depth in the lawn-covered grown surface by rotating of the cutting blade. Using this cutting blade, contact-resistance between the cutting blade and the inner faces of the incised grooves can be made as low as possible at the time of forming the incised grooves, and the incised part of the lawn covered ground can be finished with good outer appearance. A lawn cutting apparatus, wherein a plurality of cutting blades, each being in a substantial form of a prominently curved broadax, are mounted on a blade mounting shaft which is rotatably provided in substantially parallel with the wheel axle of the self-propelling vehicle, and outwardly protruded ribs are provided on both lateral faces of each of the cutting blades in a substantially arcuate shape along the edge of the cutting blade in the form of a prominently curved broadax.
REFERENCES:
patent: 864812 (1907-09-01), Thuillier
patent: 1551647 (1925-09-01), Dyson
patent: 1727648 (1929-09-01), Jarvis
patent: 2312569 (1943-03-01), Maga
patent: 3102376 (1963-09-01), Henderson
patent: 3570229 (1977-03-01), Freedlander et al.
patent: 4653590 (1987-03-01), Shank
patent: 5036651 (1991-08-01), Nelson
Howard, "Turf-Quaker" Flyer, Jan. 1981.
Corbin David H.
Warnick Spencer
Y.M. Golf Course Equipment Co., Ltd.
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