| 摘要 |
A novel ski slope grooming method, similar to an ironing procedure in which the iron is caused to glide smoothly over the surface to be smoothed and compressed, is carried out through the employment of a novel snow-riding vehicle, having the following characteristics: (a) the light vehicle rides on the snow, distributing its weight through a series of long and broad, smooth-bottomed skids, so that the skids carry the entire weight of the vehicle and its load, substantially evenly distributed on the surface of the snow; (b) the vehicle exerts no driving traction or braking traction upon the surface of the snow, there being no drive wheels or caterpillar treads; (c) the vehicle accomplishes its work of evening and compacting the snow with efficiency and thoroughness while pulling itself uphill through an anchored draw-line and while coasting downhill under the pull of gravity but restrained by the draw-line; (d) the vehicle includes an optionally usable scraper blade which can be set at various heights for breaking up lumps and evening the surface of the snow, but no other structure which could oppose a significant resistance to the progress of the vehicle over the snow; and (e) provision is made for a single operator, riding the vehicle, to steer the vehicle, to control a drive motor through which the draw-line can be reeled in, and to control a reel brake for paying out the draw-line and thereby controlling the rate at which the vehicle coasts downhill.
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