Excavating – Snow or ice removing or grooming by portable device – Scraper blade
Patent
1992-08-07
1993-09-21
Reese, Randolph A.
Excavating
Snow or ice removing or grooming by portable device
Scraper blade
37231, 37270, 37272, 2804611, 280492, 172484, E01H 504
Patent
active
052457710
ABSTRACT:
The disclosure relates to a road transportable, adjustable or non-adjusta width trailable plow which is adapted to be pulled by a tow vehicle, a four bar linkage interconnects the plow with the tow vehicle allowing the plow to yaw with respect to the vehicle while limiting motion in the pitch plane to parallel displacement, the horizontal links in the four bar linkage are telescopic and spring biased to allow for surge between the tow vehicle and the load and a frame portion securable to the tow vehicle is gimballed with the hitch on an axis parallel to the links for allowing the plow to roll with respect to the tow vehicle.
REFERENCES:
patent: 3561539 (1971-02-01), Evans
patent: 3755930 (1973-09-01), Brandt et al.
patent: 4103443 (1978-08-01), Pelsy
patent: 4208974 (1980-06-01), Dreyer et al.
patent: 4506465 (1985-03-01), Johnson
patent: 5050322 (1991-09-01), Burkard
Marsh Luther A.
Olsen Arlen L.
Reese Randolph A.
The United States of America as represented by the Secretary of
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