Earth working – With actuator adapted to lift tool for transport on wheeled... – Servo-motor forces tool down
Patent
1988-07-11
1990-03-27
Johnson, Richard J.
Earth working
With actuator adapted to lift tool for transport on wheeled...
Servo-motor forces tool down
172471, 172470, 404122, A01B 63102, E01C 1926
Patent
active
049112481
ABSTRACT:
An earth compacting apparatus for mounting at one end of an earth working vehicle comprises a plurality of separate compaction units and a pivotal linkage for pivotally mounting the compaction units side by side on a vehicle. An actuator assembly operates on the linkage for independently raising and lowering each compaction unit between a raised, inoperative position and a lowered position in contact with the ground. The actuator assembly also provides downward pressure on each compaction unit in the lowered position.
REFERENCES:
patent: 2672994 (1954-03-01), Werner et al.
patent: 3433310 (1969-03-01), Harper
patent: 3552497 (1971-01-01), Stedman
patent: 3891342 (1975-06-01), Roe
patent: 3993413 (1976-11-01), Cox et al.
patent: 4023288 (1977-05-01), Roe
patent: 4204578 (1980-05-01), Stedman
patent: 4224003 (1980-09-01), St. Louis
patent: 4269535 (1981-05-01), Schultz
patent: 4289422 (1981-09-01), De Klerk et al.
patent: 4420189 (1983-12-01), Von Ruden
patent: 4436477 (1984-03-01), Lenertz et al.
patent: 4487268 (1984-12-01), Greve
patent: 4610567 (1986-09-01), Hosking
patent: 4648466 (1987-03-01), Baker
Johnson Richard J.
P.S. Construction
LandOfFree
Earth compacting apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Earth compacting apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earth compacting apparatus and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1644867