Water jet type underwater ground excavator

Details Water jet type underwater ground excavator Water jet type underwater ground excavator

1975-05-05

1976-12-28

Eickholt, E. H.

Excavating

Peat excavators

37 63, 37 78, E02F 388

Patent

active

039993124

ABSTRACT:
In a water jet type underwater ground excavator wherein an underwater pump portion is carried on an excavator body including stabilizer sleds, an excavation portion protrudes downwardly and rearwardly under the excavator body, and water is delivered from the underwater pump portion to the excavation portion and then ejected from jet nozzles of the excavation portion so as to excavate the ground under water, an improvement by a sinker arm erected at a free end of the excavation portion in a manner to ascend and descend with upward and downward motions of the free end, whereby the stability of the excavator is enhanced. By joining to the sinker arm a brake equipment which suppresses the ascent thereof, the stability of the excavator is enhanced.

REFERENCES:
patent: 3217499 (1965-11-01), Ishiki
patent: 3333432 (1967-08-01), Hale et al.
patent: 3338060 (1967-08-01), Harmstorf
patent: 3434297 (1969-03-01), Gretter et al.
patent: 3462963 (1969-08-01), Moore
patent: 3638439 (1972-02-01), Niederer

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