Excavating – Peat excavators
Patent
1977-03-28
1978-10-31
Eickholt, E.H.
Excavating
Peat excavators
37 13, 172387, 172394, 280 9, 280 12M, 37 52, E01H 400
Patent
active
041226143
ABSTRACT:
A new ski track mold is disclosed which is capable of forming a new and improved type of ski track for use in Nordic skiing when towed behind a tractor, snowmobile or similar transport vehicle. This invention provides novel means for forming a ski track which has a track plane for each ski substantially perpendicular to the earth's gravitational vector forces regardless of the type of terrain being traversed, as well as novel means for assuring a superior quality ski track with an increased life span.
REFERENCES:
patent: 1007459 (1911-10-01), Larsen
patent: 1111108 (1914-09-01), Talbot
patent: 1161674 (1915-11-01), Holland
patent: 2705447 (1955-04-01), Robbins
patent: 2883204 (1959-04-01), Tomasovich
patent: 2932525 (1960-04-01), Perry
patent: 3043034 (1962-07-01), Kober
patent: 3739859 (1973-06-01), White
patent: 3795069 (1974-03-01), Cheney
patent: 3815688 (1974-06-01), Brown
patent: 4014116 (1977-03-01), Baechler
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