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本帖最后由 johnxu 于 2014-8-20 15:50 编辑
被美国人申请专利的轮滑伞降装备:
以下讲的如何使用、如何操作等,跟老实介绍的一模一样,也强调一定要会T刹,才能使用这种减速伞。哈哈!我一看这文章,完全就是老实讲的一样。
Tip: how to slow down with a parachute
A square canvas (parachute) is attached with two straps in its 2 corners. It is also attached in the lower calf. The skater only has to grasp two handles in the top corners. Then he opens the arms to deploy the parachute ... It looks like some flying squirrels in North America. This product is used in extreme sports such as longboard, ski, snowboard and surf ...
It is possible to control the speed by changing the position of the parachute: The more one stands up and opens the arms, the more the speed decreases due to a greater wind resistance.
Conversely, the more one looks like a ball, the more one reduces wind resistance and accelerates!
" You wear the "parachute" on calves in less than 10 seconds. Then you just have to open the arms to slow down. The arms work more than the legs. The effect is surprising, it works really well! Of course, you must be able to use T-braking. This system gives skaters the opportunity to enjoy the slopes above 10%. "
减速伞的技术参数:Technical sheet
面积Size: 76" x 66" (英寸)
价格Price : $79.00 (美元)
专利号Patent : US D613,360 S
适用运动Sports : 滑板、轮滑、冲浪、滑雪........skateboard, roller-skating, surf, stand up paddle, ski, snowboard, longboard...
运动减速伞,可用于大于10度的山地轮滑下降,79美元,各种颜色。{:soso_e128:}
http://www.sporting-sails.com/products
从美国专利局查到的有关这个减速伞的专利申请简况如下:
美国专利号:D613,360
批准日期:2010年4月6日
专利名称:多用途燕尾型人体帆
发明人:史密斯、威廉姆、安德鲁等人
申请号:D/323,083
归档日期:2008年8月18日
United States Patent D613,360
Smith, IV , et al. April 6, 2010
Multi-purpose body-sail with swallow tail
Claims
CLAIM The ornamental design for a multi-purpose body-sail with swallow tail, as shown and described.
Inventors: Smith, IV; Harry William (Mill Valley, CA), Smith; Nicholas Andrew (Mill Valley, CA), Smith, Jr.; Harry William (Norwich, NY)
Appl. No.: D/323,083
Filed: August 18, 2008
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市场销售的轮滑减速伞
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专利文件部分
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减速伞的正反侧仰俯五视图
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