Earth working – Lawn aerator or perforator – or plug remover
Reexamination Certificate
2005-02-15
2005-02-15
Novosad, Christopher J. (Department: 3671)
Earth working
Lawn aerator or perforator, or plug remover
C172S122000, C172S123000, C172S540000, C172S554000, C111S121000
Reexamination Certificate
active
06854525
ABSTRACT:
A tine assembly comprising a plurality of individual tines, each tine with an arcuate shaped base section and a blade section. Each tine is mountable between a pair of hubs suds that each blade extends radially outward therefrom. The base portions are clamped, secured, or otherwise engaged between the hub assemblies. The blades may be positioned to be twisted in various angles about a line extending substantially radially outwards, by the use of wedge-shaped, arcuate blocks. The blocks and individual tines may be positioned in a multitude of different configurations to providing desired rotational positioning of the tine blade sections.
REFERENCES:
patent: 2708866 (1955-05-01), Shonts
patent: 2856832 (1958-10-01), Galazin
patent: 4383580 (1983-05-01), Huxford
patent: 4589458 (1986-05-01), McCord, Jr.
patent: 4840232 (1989-06-01), Mayer
patent: 5064001 (1991-11-01), Walker
patent: 5586731 (1996-12-01), Glaze et al.
patent: 2160401 (1985-12-01), None
patent: WO 9202119 (1992-02-01), None
International Search Report.
Novosad Christopher J.
Patterson Thuente Skaar & Christensen P.A.
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