Earth working – Lawn aerator or perforator – or plug remover
Reexamination Certificate
2008-12-10
2011-11-15
Pezzuto, Robert (Department: 3671)
Earth working
Lawn aerator or perforator, or plug remover
Reexamination Certificate
active
08056645
ABSTRACT:
In a self-propelled soil aeration device comprising a machine frame, a plurality of movable piercing tools arranged next to each other transversely to the direction of travel and define a width of a working path, at least two rear wheels running laterally alongside the path, and at least one front wheel arranged in front of the piercing tools providing a supporting device extending transversely to the direction of travel and arranged in front of the piercing tools and is vertically adjustable with respect to the soil such that in a working position, the rear wheels are raised and the machine frame is supported on the supporting device and the at least one front wheel so that neither the front or rear wheels, nor the supporting device travel over the already worked soil and the supporting device is supported by one or more wheels.
REFERENCES:
patent: 3802513 (1974-04-01), Ploenges
patent: 4424868 (1984-01-01), Staniforth et al.
patent: 4550783 (1985-11-01), Hansen
patent: 4840232 (1989-06-01), Mayer
patent: 4867244 (1989-09-01), Cozine et al.
patent: 5623996 (1997-04-01), Postema
patent: 0 195 103 (1986-09-01), None
patent: 1 210 853 (2002-06-01), None
International Search Report dated Mar. 20, 2009 to corresponding international patent application No. PCT/EP2008/067256, 2 pages.
Maier & Maier PLLC
Pezzuto Robert
Redexim Handel-En Exploitatie Maatschappij B.V.
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