Earth working – Automatic power control
Patent
1981-12-07
1983-11-22
Shapiro, Paul E.
Earth working
Automatic power control
172 57, 172120, 172121, 172125, 172438, 172464, 172506, A01B 3306, A01B 4904, A01B 6308, A01B 63111
Patent
active
044163355
ABSTRACT:
A ground-clearing and mound-building device is provided that can be towed along the ground to move material on the surface to one side, expose the surface of the ground, and build mounds on the cleared ground for planting and forest regeneration, having a scarifier means mounted for rotation about its central axis, circular in cross-section, and having a peripheral surface that digs into the ground during rotation thereof when in contact with the ground under pressure, arranged to be brought into contact with the ground at any selected contact pressure; with control of at least one of the selected contact pressure and the selected rotation rate to dig, loosen, and displace a surface layer of the ground and push such loosened ground into mounds.
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patent: 600303 (1898-03-01), Christman
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patent: 4117888 (1978-10-01), Fuller et al.
patent: 4359101 (1982-11-01), Gagnon
Ekeborg Bo G.
Lofgren Stig-Gunnar
Mo och Domsjo Aktiebolag
Shapiro Paul E.
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