Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent
1991-10-02
1992-06-16
Reese, Randolph A.
Excavating
Snow or ice removing or grooming by portable device
Railway clearer
212245, 212253, 384593, E02F 912
Patent
active
051215616
ABSTRACT:
A load reduction and alignment system for drag line excavators which have annular rail tracks on which multiple support roller assemblies are positioned. The load stress from the excavator is distributed and reduced by increasing the number of rollers within the roller assembly by reducing roller spacing as well as providing for on site adjustement of a segmented concentric guide rail against which the modified rollers engage.
REFERENCES:
patent: 133388 (1872-11-01), Snyder
patent: 350528 (1886-10-01), Cooper
patent: 4239305 (1980-12-01), Baron
patent: 4329795 (1982-05-01), Kalve
patent: 4478340 (1984-10-01), Delago
patent: 4611440 (1986-09-01), Kalve
patent: 4769932 (1988-09-01), Kalve
patent: 5078285 (1992-01-01), Geyer et al.
Olsen Arlen L.
Reese Randolph A.
Warren Fabricating Corp.
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