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    • 4. 发明授权
    • Bicycle freewheel
    • 自行车飞轮
    • US3972245A
    • 1976-08-03
    • US499067
    • 1974-08-20
    • John Michael Allen
    • John Michael Allen
    • B62M9/10F16H11/04F16D41/18F16H7/10
    • B62M9/10
    • There is disclosed a Derailleur block comprising a sleeve adapted to be secured to a bicycle wheel hub, a sprocket carrier mounted on the sleeve with interposed ball races and free wheeling mechanism, and a number of sprockets having different numbers of teeth secured in axially spaced relationship on the carrier. At one end of the block there is a cone for adjusting the ball-race clearances in co-axial screw threaded engagement in the carrier, and in screw-threaded engagement with the protruding end of the cone, there is a lock nut. The lock nut serves not only to secure the cone after adjustment, but as an abutment for the sprocket assembly which is thereby readily removable. Both cone and lock nut are accessible for manipulation externally of the block.
    • 公开了一种包括适于固定到自行车车轮轮毂的套筒的变速器座,安装在套筒上的具有插入的球座和空转轮机构的链轮架,以及具有以轴向间隔关系固定的不同齿数的多个链轮 在载体上。 在挡块的一端有一个锥体,用于调节托架中同轴螺纹接合的滚珠间隙,并且与锥体的突出端螺纹接合,有一个锁紧螺母。 锁定螺母不仅用于在调节之后固定锥体,而且用作链轮组件的邻接件,从而可以容易地移除。 锥形和锁定螺母都可以从块的外部进行操作。
    • 5. 发明申请
    • Method and system for determining optimal or near optimal product quantities
    • 用于确定最优或近似最优产品数量的方法和系统
    • US20110145030A1
    • 2011-06-16
    • US12657871
    • 2010-01-29
    • John Michael Allen
    • John Michael Allen
    • G06Q10/00
    • G06Q10/06G06Q10/0631G06Q10/087G06Q30/02
    • A computer-implemented method for determining optimal or near-optimal product order quantities for receipt on one or more predetermined days is disclosed. The method includes: obtaining inventory data for each of a range of products over a predetermined time period including the one or more predetermined days; generating and storing a representation of an Economic Order Quantity (EOQ) curve for each of the range of products using the inventory data, each of the EOQ curve representations generated specifically for one of said one or more predetermined days and each comprising a plurality of data sets each including a product order quantity and an associated cost; and iteratively: selecting products from the range of products and determining potential order quantities for each of the selected products; for each selected product, retrieving the cost associated with the determined potential order quantity of the product from a respective stored EOQ curve representation; determining a total cost for ordering the selected products in the potential order quantities; and storing the currently selected set of products and associated potential order quantities if the total cost is less than a previously determined total cost.
    • 公开了一种用于在一个或多个预定日子上确定用于接收的最佳或接近最佳产品订单数量的计算机实现的方法。 该方法包括:在包括一个或多个预定日期的预定时间段内获取每个产品范围的库存数据; 生成并存储使用库存数据的每个产品范围的经济订单数量(EOQ)曲线的表示,每个EOQ曲线表示专门为所述一个或多个预定日期中的一个生成,并且每个包括多个数据 设置每个包括产品订单数量和相关成本; 并迭代地:从产品范围中选择产品并确定每个所选产品的潜在订单数量; 对于每个所选择的产品,从相应的存储的EOQ曲线表示中检索与确定的产品的潜在订单数量相关联的成本; 确定以潜在订单数量订购所选产品的总成本; 并且如果总成本小于先前确定的总成本,则存储当前选择的一组产品和相关联的潜在订单数量。