Shock absorbing system for suction dredgers

Details Shock absorbing system for suction dredgers Shock absorbing system for suction dredgers

1976-08-25

1978-11-07

Crowder, Clifford D.

Excavating

Peat excavators

172265, 172705, 188282, E02F 388

Patent

active

041238591

ABSTRACT:
A dragged suction dredger, comprising a suction pipe provided with a dragged suction head having a housing with a recessed suction nozzle and a cutting tool extending, in the cutting position, into the ground and being pivotally mounted on the housing and being held in the cutting position by holding mechanism which will deflect at the transgression of a predetermined load of the cutting tool, has the object to avoid loss of time during the dredging operations and inefficient dredging. For this purpose the holding mechanism comprise at least one fluid cylinder for pushing the cutting tool after a deflection back into the cutting position or into the holding position respectively, the fluid pressure of said fluid cylinder being subjected to the action of a gas cushion.

REFERENCES:
patent: 1457122 (1923-05-01), Ree
patent: 1543098 (1925-06-01), Carter et al.
patent: 1840606 (1932-01-01), Scheffauer
patent: 3760882 (1973-09-01), Geurts
patent: 3814219 (1974-06-01), Fannin et al.

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