EARTH MOVING APPARATUS WITH VIBRATING CUTTING EDGE
United States Patent 3478450

Inventors:
Cunningham, Ernest R.
Publication Date:
11/18/1969
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Assignee:
Ernest, Cunningham R.
Primary Class:
37/447
Other Classes:
172/40, 37/904
International Classes:
E02F3/40; E02F3/815; E02F3/76; E02F3/76
US Patent References:
2986294Bucket operating means for tractor loaders
3145488Vibrating bucket
3211236Subsoil tiller
3226858Inertial mass, force multiplying device
3238646Loader bucket with a vibrating blade
3272559Pavement cutting and earth excavating device
3296985Oscillating plow and fertilizing apparatus
3328904Power bucket
3367716Sonic rectifier coupling for rock cutting apparatus
Foreign References:
GB519046A




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