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1. WO1981003353 - REVERSIBLY POWERED ROTARY SNOW TILLER

Publication Number WO/1981/003353
Publication Date 26.11.1981
International Application No. PCT/US1980/001467
International Filing Date 22.10.1980
IPC
E01H 4/02 2006.01
EFIXED CONSTRUCTIONS
01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; CLEANING LAND; DISPERSING FOG IN GENERAL
4Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow
02for sporting purposes, e.g. preparation of ski trails
E01H 5/09 2006.01
EFIXED CONSTRUCTIONS
01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; CLEANING LAND; DISPERSING FOG IN GENERAL
5Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
04Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying elements, e.g. conveying pneumatically
08dislodging essentially by driven elements
09the elements being rotary or moving along a closed circular path, e.g. rotary cutter, digging wheels
CPC
E01H 4/02
EFIXED CONSTRUCTIONS
01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING ; OR PREVENTING; FOG IN GENERAL ; CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
4Working on surfaces of snow or ice in order to make them suitable for traffic or sporting purposes, e.g. by compacting snow
02for sporting purposes, e.g. preparation of ski trails; ; Construction of artificial surfacings for snow or ice sports
E01H 5/098
EFIXED CONSTRUCTIONS
01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING ; OR PREVENTING; FOG IN GENERAL ; CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
5Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
04Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying ; levelling; elements, conveying pneumatically ; for the dislodged material
08dislodging essentially by driven elements,
09the elements being rotary or moving along a closed circular path, e.g. rotary cutter, digging wheels
098about horizontal or substantially horizontal axises perpendicular or substantially perpendicular to the direction of clearing
Applicants
Inventors
Priority Data
15142719.05.1980US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) REVERSIBLY POWERED ROTARY SNOW TILLER
(FR) MACHINE ROTATIVE A LABOURER LA NEIGE A TRACTION REVERSIBLE
Abstract
(EN)
A vehicle drawn snow tiller for loosening, cutting, grinding, packing and leveling a wide path of snow for improved, more enjoyable skiing. The tiller comprises an elongate rotary snow cutter assembly (12) with radially projecting snow cutting blades (13) distributed over the length and about the circumference of a cutter tube (42) directly powered by reversible hydraulic motors (20), one mounted upon each of its ends. The snow is cut, selectably, in or away from the direction of travel of the tiller over the snow. An elongate apron (21) disposed over the cutter assembly collects and directs the loose cut snow onto the surface behind the cutter assembly, where it is compacted by the apron and finally leveled and smoothed by a horizontal grooming bar (23) on the trailing edge of the apron. An elongate snow splitting baffle (35) may be disposed above the cutter to deflect a portion of the cut snow forward to fall again into the path of the reversely rotating cutter for additional cutting and grinding. The cutter assembly may comprise two segments (29) and (30) flexibly coupled at the center of the tiller (19) to facilitate fabrication and assembly of the tiller, and to alleviate the effects of shock to the cutter. Each segment may be similarly coupled to one of the motors.
(FR)
Une machine a labourer la neige tractee par un vehicule, defait, coupe, broye, entasse et nivele un large chemin de neige pour ameliorer la pratique du ski et la rendre plus agreable. La machine a labourer comprend un ensemble allonge rotatif pour couper la neige (12) avec des couteaux radiaux (13) pour couper la neige, distribues sur la longueur et autour de la circonference d'un tube de coupe (42) entraine directement par des moteurs hydrauliques reversibles (20), un moteur etant monte sur chacune de ses extremites. La neige est decoupee, de maniere selective, dans le sens de deplacement de la machine ou en s'eloignant de celui-ci. Un tablier allonge (21) dispose sur l'ensemble de coupe recupere et dirige les morceaux de neige coupes sur la surface situee derriere l'ensemble de coupe, ou elle est compactee par le tablier et finalement nivelee et rendue lisse par une barre horizontale a peigner (23) sur le bord trainant du tablier. Une chicane allongee de separation de la neige (35) peut etre disposee au dessus de l'ensemble de coupe pour devier une partie de la neige decoupee vers l'avant pour la faire tomber de nouveau dans le chemin de l'ensemble de coupe a rotation inversee pour decouper et broyer davantage la neige. L'ensemble de coupe peut comprendre deux segments (29 et 30) couples de maniere flexible au centre de la machine a labourer (19) pour faciliter la fabrication et l'assemblage de la machine a labourer, et pour reduire les effets des chocs sur l'assemblage de coupe. Chaque segment peut etre couple d'une maniere identique a l'un des moteurs.
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