Excavating – Peat excavators
Patent
1980-08-11
1982-10-12
Crowder, Clifford D.
Excavating
Peat excavators
417125, E02F 388
Patent
active
043531741
ABSTRACT:
A control system is disclosed for a dredging device which includes a submersible pump having one or more chambers. Each chamber defines an air port through which air can be delivered to and exhausted from the chamber, a material discharge port for discharging liquid and solid material from the chamber, and a chamber suction port for admitting liquid and solid material to the chamber. Air control valves are provided for alternately exhausting air from each chamber to admit material to the chamber through the suction port and for delivering air to each chamber so as to discharge material from the chamber through the discharge port. The control system operates these air control valves in accordance with a selectable timed cycle to achieve optimum efficiency in the dredging operation.
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Amtec Development Company
Crowder Clifford D.
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