Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent
1975-03-05
1976-07-20
Goodman, Philip
Excavating
Snow or ice removing or grooming by portable device
Railway clearer
267 64R, 172705, E02F 362
Patent
active
039698351
ABSTRACT:
A lockable suspension system for a scraper which has a tractor and a bowl pivotally connected to each other and pivotally supported by wheels driven by an engine, and hydraulic jacks attached to the bowl for controlling the vertical position of the bowl. The suspension system includes a lever pivotally attached to the hydraulic jacks, a hydraulic ram pivotally attached to the lever, a shock absorber rigidly attached to the tractor and pivotally attached to the hydraulic ram while being pivotally connected to and pivotally supporting the lever, and a controlling means operatively connected to the hydraulic rams whereby the rams can be locked out.
REFERENCES:
patent: 3158944 (1964-12-01), Rehberg
patent: 3299547 (1967-01-01), Gee
patent: 3514057 (1970-05-01), Biggs
patent: 3889404 (1975-06-01), Eftefield
Goodman Philip
Harman Floyd B.
International Harvester Company
Wendell William H.
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