Earth working – Lawn aerator or perforator – or plug remover – Earth removing
Patent
1987-11-20
1989-12-05
Reese, Randolph A.
Earth working
Lawn aerator or perforator, or plug remover
Earth removing
172125, A01B 4502
Patent
active
048846376
ABSTRACT:
A ground coring and/or aerating apparatus having a crank assembly carrying ground coring devices such that as the apparatus advances over the ground the ground coring devices periodically enter the ground and withdraw threrfrom, a skid disposed and biased to apply pressure on the surface about an opening or openings such as slots through which the ground coring devices pass, ramp members forming part of the skid to guide uplifted soil, turf or the like, down to the same level as the general bottom surface of the skid, transmission including a gearbox which enables rapid gearing adjustment, cranking assembly including two synchronized eccentric driving members each cranking through its own connecting member, the connecting members being substantially mutually at right angles, and a supporting frame on which the transmission is mounted and from which the ground coring devices and skid depend.
REFERENCES:
patent: 2347748 (1944-05-01), Melling
patent: 3429378 (1969-02-01), Mascaro
patent: 3834464 (1974-09-01), Carlson
patent: 4003439 (1977-01-01), van der Lely
patent: 4602687 (1986-07-01), Hansen
patent: 4606411 (1986-08-01), Classen
patent: 4658909 (1987-04-01), McDermott
Reese Randolph A.
Thompson Jeffrey L.
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