E - Fixed Constructions – 01 – C
Patent
E - Fixed Constructions
01
C
94/1
E01C 23/00 (2006.01) E01H 4/02 (2006.01)
Patent
CA 1087432
ABSTRACT OF THE DISCLOSURE An elongated main frame is provided including front and rear end portions. An elongated duel track endless track drive assembly is oscillatably supported from the rear end portion of the frame for angular displacement about a first horizontal trans- verse axis intermediate the opposite ends of the track drive assembly. a front dirigible ski equipped support assembly is carried by the front end portion of the frame forward of the drive assembly and an elongated longitudinally extending sub-frame including front and rear end portions is supported from the main frame front end portion for angular displacement about a second horizontal axis extending transversely of the main frame and the front end portions of the sub-frame. The rear end portion of the sub-frame includes transversely spaced depending packed and icy snow cover working tines and an upstanding transverse blade member rearward of the tines including a generally horizontal lower edge portion. Lift structure is operatively connected between the sub-frame and the main frame for selectively angular displacement of the sub-frame about the second axis to raise and lower the rear end portion of the sub-frame, and thus the tines and blade member, relative to snow cover over which the main frame is being forwardly advanced by the drive assembly.
296825
Sabrowsky Gerald
Walker Chancy M.
Macrae & Co.
S. & W. Sales Inc.
LandOfFree
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