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    • 8. 发明授权
    • Collapsible spreader
    • 可折叠吊具
    • US07837073B2
    • 2010-11-23
    • US11036689
    • 2005-01-14
    • Paul HavlovitzSteve CourtneyMichael CavinsRandy GoodwinDan Larimore
    • Paul HavlovitzSteve CourtneyMichael CavinsRandy GoodwinDan Larimore
    • A01C15/16
    • A01C15/02
    • An improved collapsible spreader with a spread rate selection mechanism including a knob and a rotatable cup-shaped structure. The cup-shaped structure includes an elongated setting tab and a thirty-six step edge corresponding to thirty-six spread rate settings on the knob. Operatively engaged with the cup-shaped structure is an abutment tab that is part of a closure structure for blocking and selectively unblocking a hopper opening. The tab engages the setting tab to define the adjustable length of the closure structure. Thereafter, abutment rate selection is a function of the rotatable position of the cup-shaped structure. Engagement of the abutment tab and a step defines the size of the hopper opening and thus the amount of product released from the hopper during operation. The spreader also includes a dual spring arrangement to bias the closure structure to a closed position and to prevent breakage. The disclosed spreader also features a one piece wheel to reduce parts and assembly costs.
    • 一种具有扩展速率选择机构的改进的可折叠吊具,包括旋钮和可旋转的杯形结构。 杯形结构包括细长的设置翼片和对应于旋钮上的三十六个扩展速率设置的三十六个步进边缘。 与杯状结构可操作地接合的是邻接突片,其是用于阻塞和选择性地阻塞料斗开口的封闭结构的一部分。 接片接合设置标签以定义闭合结构的可调节长度。 此后,邻接速率选择是杯形结构的旋转位置的函数。 接合突片的接合和台阶限定料斗开口的尺寸,从而限制在操作期间从料斗释放的产品的数量。 吊具还包括双重弹簧装置,以将封闭结构偏置到关闭位置并防止断裂。 所公开的吊具还具有一个整体的轮子,以减少零件和装配成本。