Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent
1982-03-29
1984-06-19
Crowder, Clifford D.
Excavating
Snow or ice removing or grooming by portable device
Railway clearer
37141R, 37DIG18, 172 40, E02F 381
Patent
active
044546661
ABSTRACT:
A front end loader has a loading bucket secured to a tractor and a transversely elongate cutter blade closely spaced forward of a lower front edge of the bucket. Improved apparatus for reciprocating the blade in forward and aft directions relative to the front edge of the bucket is disclosed. A force transmitting beam has a resonant frequency with at least on node and first and second anti-nodes at the resonant frequency. A source of vibrations at or near the resonant frequency is coupled to the beam near the first anti-node to vibrate the second anti-node about a neutral position. The beam is secured near one node so as to locate the neutral position of the second anti-node in spaced relationship from the cutting blade within striking distance thereof. The second anti-node thus applies unidirectional force impulses to the blade in a forward direction as the second anti-node vibrates to drive the blade intermittently forward.
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"Automotive Engineering", Nov. 1978, pp. 74-80.
Brown, Joseph M., "Soil Excavation Improvement from Bulldozer Blade Oscillation", Technical Paper of Society of Automotive Engineers, Inc., Sep. 1978.
Gurries Raymond A.
Stormon Harry J.
Crowder Clifford D.
Resonant Technology Company
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