Excavating – Snow or ice removing or grooming by portable device – Railway clearer
Patent
1978-06-15
1980-02-19
Eickholt, E. H.
Excavating
Snow or ice removing or grooming by portable device
Railway clearer
200 6158R, 335205, E02F 500, H01H 900
Patent
active
041887395
ABSTRACT:
A work vehicle has a frame, a movable first member, a first magnetic switch portion connected to the first member, and a second magnetic switch portion connected to the frame. Apparatus is provided for pivotally connecting the second magnetic switch portion to the frame. The second magnetic switch portion generally vertically moves in response to movement of the first member and is maintained a preselected distance from the first member for assuring relative positioning of the switch portions.
REFERENCES:
patent: 2190303 (1940-02-01), Wantz
patent: 2924682 (1960-02-01), Winterburn
patent: 3158709 (1964-11-01), Findley et al.
patent: 3462569 (1969-08-01), Schooley
patent: 3596021 (1971-07-01), Saul
patent: 3613036 (1971-10-01), Kurtz
patent: 3613037 (1971-10-01), Kurtz
patent: 3887098 (1975-06-01), Brundige et al.
Caterpillar Tractor Co.
Eickholt E. H.
Heming William B.
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