Piling rake

Details Piling rake Piling rake

1980-10-21

1982-12-21

Johnson, Richard J.

Excavating

Peat excavators

1722605, 172777, 172832, A01B 6104, E02F 376

Patent

active

043641911

ABSTRACT:
A rake for use with tractors has a blade connectable to a tractor and a plurality of teeth extending from the bottom of the blade. The teeth are pivotally connected to permit movement of the teeth away from objects encountered when the tractor moves. Fluid piston and cylinder combinations interconnect the teeth with the blade so movement of the teeth displaces pressurized fluid within the piston and cylinder combinations. The pressurized fluid reverses the pivotal movement when the teeth clear the objects.

REFERENCES:
patent: 1898312 (1933-02-01), Ritchie
patent: 2770056 (1956-11-01), Hawkins
patent: 3042122 (1962-07-01), Anderson
patent: 3349855 (1967-10-01), Knudson
patent: 3480086 (1969-11-01), Groenke
patent: 3561541 (1971-02-01), Woelfel

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