Road structure – process – or apparatus – Apparatus – Screed or drag
Patent
1979-06-07
1981-01-13
Byers, Jr., Nile C.
Road structure, process, or apparatus
Apparatus
Screed or drag
37 35, 172780, 172787, E01C 1922
Patent
active
042446627
ABSTRACT:
A snow grooming device for leveling a snowmobile trail comprising a frame having retractable wheels for transporting the snow grooming device and a set of angled blades which direct the snow back and forth across the trail to a leveler bar that directs the snow to a compacter attachment.
REFERENCES:
patent: 1802087 (1931-04-01), McConnaughay
patent: 1833878 (1931-11-01), Adams
patent: 1941833 (1934-01-01), Gustafson
patent: 1995267 (1935-03-01), Pease
patent: 2592960 (1952-04-01), Schulze
patent: 2962946 (1960-12-01), Neff
patent: 3398663 (1968-08-01), Matich
patent: 3496843 (1970-02-01), Wallingford
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