Excavating – Snow or ice removing or grooming by portable device – Vehicle mount with obstacle responsive trip – or yieldable tool
Patent
1984-03-26
1986-04-22
Burr, Edgar S.
Excavating
Snow or ice removing or grooming by portable device
Vehicle mount with obstacle responsive trip, or yieldable tool
172519, E01H 506, E01H 509
Patent
active
045833079
ABSTRACT:
The clearing appliance has a number of clearing elements (4) mounted so that they can rotate on a support beam (3). The clearing elements are arranged one after the other in a line and are offset transversely with respect to one another. The axes of rotation of the clearing elements (4) are angled in relation to the appliance longitudinal axis and the clearing elements (4) are tilted relative to the horizontal plane. Each clearing element (4) is concave in shape, and the concave side points downwards and forwards and comprises an outer ring (17) made of elastic material in the form of a truck tire cut in half perpendicular to its axis of rotation.
REFERENCES:
patent: Re23411 (1951-09-01), Stenzel
patent: 824183 (1906-06-01), Knowlton
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patent: 2532652 (1950-12-01), Wray, Sr.
patent: 2549043 (1951-04-01), Arthur
patent: 2670588 (1954-03-01), Plant
patent: 2889640 (1959-06-01), Endres
patent: 2976939 (1961-03-01), van der Lely
patent: 3021661 (1962-02-01), Couberly
patent: 3103678 (1963-09-01), Smith
patent: 3297096 (1967-01-01), Woolridge
patent: 3315381 (1967-04-01), Fisher
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patent: 3548522 (1970-12-01), Roper
patent: 3666020 (1972-05-01), Hess
patent: 3775878 (1973-12-01), Beckner
"Der Traktor" (The Tractor), vol. 15, No. 3, Mar. 1953, (published by the Swiss Tractor Association).
Burr Edgar S.
Cohen Moshe I.
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