Excavating – Railway graders – Side former
Patent
1973-09-27
1976-03-30
Crowder, Clifford D.
Excavating
Railway graders
Side former
37DIG20, 172 45, 172 33, 180 946, 198100, 248287, E02F 376
Patent
active
039465063
ABSTRACT:
An improved trimmer type road construction apparatus, particularly useful in applications requiring a high degree of maneuverability and control flexibility, which is steeringly controlled by turning a centrally disposed front track assembly in such a manner that the main frame can be raised and lowered relative to the front drive assembly without a loss of steering control; and which has an automatic steering, grade and slope control constructed to be automatically adapted to particular job specifications and locations. The trimmer also has a reclaimer assembly for removal of the excavated earth, the reclaimer assembly being automatically positionable to deposit the excavated earth in predetermined, controlled positions about the trimmer.
REFERENCES:
patent: 2648422 (1953-08-01), Kling
patent: 2814377 (1957-11-01), Jirak
patent: 3423859 (1969-01-01), Swisher, Jr., et al.
patent: 3435546 (1969-04-01), Iverson
patent: 3445944 (1969-05-01), Speno
patent: 3540360 (1970-11-01), Snow, Jr. et al.
patent: 3601910 (1971-08-01), Goltz
patent: 3651588 (1972-03-01), Hanson
patent: 3680233 (1972-08-01), Mac Donald
Grist Warren W.
Kruger Joe Bill
Snow, Jr. Ralph K.
CMI Corporation
Crowder Clifford D.
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