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6874259 |
A device for working a snow surface, includes an endless flexible band, snow-working members arranged on the outside of the band, support elements for supporting and guiding the band, drive elements capable of moving the band around the ...
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6813848 |
A method of plowing snow from a site using a snowplow with at least two plow blades ( 5 ) forming together a plowing angle and there being on the plowing site fixed objects, such as airport lamps ( 1 ), rising over the site surface. In t...
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6725580 |
A device ( 10 ) for performing work tasks within a work area, in particular a ski run area, includes a working unit ( 60, 90 ), a manoeuvring machine ( 12, 30, 32, 37 ) to which the working unit is arranged. The manoeuvring machine is de...
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6671983 |
A snow groomer includes a movable platform, a prime mover mounted to the platform and a grooming drum rotatably driven by the prime mover for rotation in a direction opposite the traveling direction of the snow groomer. The grooming drum...
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6418645 |
A milling unit for the beating of snow-covered slopes consisting of a box-shaped structure comprising a central part to which two side parts are connected by hinging elements, in order to allow for oscillation. The structure has two hook...
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6154985 |
A device is disclosed, for use with a snow blower being of the type having an auger, and allow it to operate while moving backwards. The device principally consists of a concave blade mounted on a snow blower, which pivots between an ope...
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6085445 |
A piste-preparation device for preparing a half-pipe comprises at least one tool adjustably mounted on a piste vehicle, and lateral members which are laterally disposed relative to the tool and can essentially be assigned to side walls o...
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5974704 |
A snow removal device and method includes a core having provision for adhering snow to the core. This includes recesses which receive packed snow. Snow to be removed contacts the packed snow and adheres to the core. The core is rolled on...
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5809671 |
A snow tiller for ski slopes having rotating cutter bars with outstanding teeth. The cutter bars are each installed beneath a cover which directs the snow rearwardly to a snow smoothing comb. Each cover is adjustable in geometry to provi...
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5632106 |
A snow tiller for ski slopes having rotating cutter bars with outstanding teeth. The cutter bar is installed beneath a cover which directs the snow rearwardly to a snow smoothing comb. The cover is adjustable in geometry to provide eithe...
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5581914 |
A snow cutting tooth design and an associated cutter assembly design incorporating such teeth, wherein the tooth is constructed with a unitary body of steel plate welded to the outside surface of a tubular cutter bar, with bevelled edges...
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5469645 |
A land vehicle system for collecting crude oil and other contaminants which have been spilled on snow and ice covered surfaces includes a crawler tractor having an auger type collection and transfer mechanism mounted forwardly thereof fo...
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5106165 |
A layer of material such as pavement or sheet ice coating the surface of a roadway is efficiently removed using apparatus that includes a longitudinal tube in a breaker assembly which is rotatably carried by a control frame beam that dep...
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5084992 |
A snow grooming device for ski slopes, being a snow tilling apparatus with a toothed, selectively powered tiller bar, along with a compactor pan which may be releasably attached beneath the tiller bar to convert the device from a tiller ...
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5067264 |
The flexible tiller has a center and two end sections, each including a cutter bar, frame, apron and grooming bar. The two tiller end sections are connected flexibly to the ends of the center section by frame to frame hinges and by cutte...
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4914923 |
Method for covering with snow artificial slopes for downhill or cross-country skiing, comprising the formation of an ice layer forming the bottom of the run, the on site production of snow by machining said ice layer by forming chips hav...
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4897941 |
An improved snow comb for use attached to the trailing edge of tiller skirts and the like. The comb has lateral rows of axially elongate teeth projecting downward from a plate attached to the skirt. The teeth are tapered forwardly, and a...
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4892154 |
A ground-working implement which comprises a rotary tiller or like groundosening unit and a smoothing board located behind the tiller. Both the unit and the smoothing board are subdivided generally centrally and the sections are connecte...
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4888891 |
The invention relates to a track maintenance vehicle having a levelling attachment secured to a transverse carrier member at its rear. The levelling attachment faces downwards and is at least partially flexible. For achieving satisfactor...
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4860465 |
A vehicle for use in ski-area snow grooming operations and also for use in summer maintenance operations which is provided with a four-wheel hydrostatic-drive transmission and four-wheel steering. The vehicle has a frame/body/engine asse...
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4775014 |
A ground-working implement for rotary field tilling or ice or snow-tending n ski slopes or the like which is drawn by a tractor or a tracked vehicle and which comprises a holder connected to the vehicle pendulously by a longitudinal beam...
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4738037 |
The invention relates to a track maintenance vehicle having a levelling attachment secured to a transverse carrier member at its rear. The levelling attachment faces downwards and is at least partially flexible. For achieving satisfactor...
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4726129 |
The invention relates to a snow tiller for mounting on the rear of a track maintenance vehicle. The snow tiller comprises a tiller shaft and a tiller frame of at least triangular cross-section extending over the width of the snow tiller ...
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4559725 |
A rotary tiller for maintaining cross country ski trails has a rotary shaft with at least one array of radially extending first cutters flanked by laterally adjacent arrays of radially extending second cutters. The radial lengths of the ...
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4523398 |
An apparatus for forming cross country ski tracks in a snow covered surface has a trailer frame adapted to be connected to the rear end of a vehicle. A lifting frame is connected to the trailer frame for pivotal movement about a first ho...
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4520582 |
Apparatus for making ski trails which is towed and comprises a drag having a cutter unit and a snow crushing unit mounted behind the cutter unit on the drag. The units have radial blades and rotate about an axis transverse to the directi...
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4437245 |
A ski trail making means, composed of a frame for attachment e.g. behind a snowmobile and to which has been pivotally connected a drag adjustable in vertical direction, following after which is a trail planer with trail making blades sid...
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4348825 |
A tracking or grading unit for ski-trails and paths, comprises a sliding arrangement having at least one sliding or rolling front and rear support and a frame upon which the supports are mounted. The unit includes a cutting device which ...
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4337586 |
A snow grooming apparatus for towing behind a pulling vehicle to handle and condition snow, as an example, on ski slopes or cross country trails. The apparatus includes a scraper and snow collector assembly including a scraper blade and ...
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4312142 |
In a mobile device for preparing the surfaces of ice-rinks with an essentially rectangular rink, an ice-scraping device for the mechanical smoothing of the ice surface and a distributing device for the even application of a film of water...
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4163329 |
The disclosed apparatus is a machine of the type for connection to a snow skiing course maintenance tractor. It has freely-rolling rollers for compacting the snow and a plurality of scrapers arranged side by side. The scrapers are pivote...
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4056328 |
An apparatus for grooming snowmobile trails is towed by a dirigible tracked vehicle and includes a generally horizontal main frame, a gooseneck hitch supporting the forward end of the frame in towing engagement with the tracked vehicle, ...
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4021942 |
Apparatus for towing behind a tow vehicle to handle and condition snow on ski slopes, including a ripper assembly having teeth for ripping the surface of the snow, a scraper assembly for scraping the surface of the snow and to redeposit ...
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3794122 |
A snow conditioning machine for conditioning snow at ski areas to give it a proper texture for skiing even after it has become packed hard or become icy including a rotating member having radial teeth that intermesh with stationary teeth...
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3779319 |
A trailer for breaking and pulverizing crusty and/or icy snow cover on a ski slope comprising a frame provided with wheels by means of which it may be transported over open roads and/or bare ground to a ski slope and skis for traversing ...
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3739859 |
A lightweight snow leveler for redefining snowmobile trails incorporating an elongated rectangular frame having front and rear traveling skis. The frame mounts a leading series of snow pulverizing discs and trailing cooperating sets of s...
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3591236 |
A self-propelled vehicle adapted to move over the surface of an ice rink and remove a layer of ice and subsequently spread a film of water over the shaved ice surface. The vehicle includes an ice-removing unit located at the rear of the ...
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3475056 |
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2786283 |
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2660817 |
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2657619 |
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1796166 |
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1556448 |
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0621935 |
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0618771 |
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0596063 |
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0593466 |
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0592728 |
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0562978 |
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