Excavating – Ditcher – Wheel excavator
Patent
1987-12-02
1990-07-03
Crowder, Clifford D.
Excavating
Ditcher
Wheel excavator
37DIG17, 192113B, 464 45, E02F 324
Patent
active
049379577
ABSTRACT:
A vehicular ditching apparatus in which an oil-cooled mechanism having rotating friction discs and plates, and further having a fluid controlled piston for increasing the friction between the discs and plates, is incorporated into the ditcher, aft of the transmission, as a torsional limiting device to protect the components of the drive chain in the event the cutting wheel of the ditcher is subjected to unexpected increased load, such as when it hits an unseen obstruction.
REFERENCES:
patent: 2642971 (1953-06-01), Hagenbook
patent: 3064455 (1962-11-01), Gros
patent: 3488980 (1970-01-01), Burrough
patent: 3756325 (1973-09-01), Rucinski
patent: 4004641 (1977-01-01), Hendrickson
patent: 4624650 (1986-11-01), Hiruma et al.
patent: 4728053 (1988-01-01), Hitomi
Capitol Trencher Corporation
Crowder Clifford D.
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