Hydraulic wing extension

Details Hydraulic wing extension Hydraulic wing extension

1986-01-27

1987-05-26

Eickholt, E. H.

Excavating

Snow or ice removing or grooming by portable device

Vehicle mount with obstacle responsive trip, or yieldable tool

37281, 172816, E01H 504

Patent

active

046674268

ABSTRACT:
A snowplow with an extension blade is provided and consists of a main blade and an extension blade horizontally slideable within a track behind the main blade by a hydraulic cylinder assembly, whereby when the extension blade is completely retracted it will be totally behind the main blade. In a modification the extension blade contains individual spring biased vertically extending hands with the purpose of providing needed height when the extension blade is extended.

REFERENCES:
patent: 2830391 (1958-04-01), Bruno et al.
patent: 3231991 (1966-02-01), Wandscheer et al.
patent: 3477151 (1969-11-01), Zawella
patent: 3803733 (1974-04-01), Ramsey
patent: 3807064 (1974-04-01), Schmidt, Jr.
patent: 4073077 (1978-02-01), Essel
patent: 4275514 (1981-06-01), Maura
patent: 4369847 (1983-01-01), Mizunuma

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