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    • 5. 发明授权
    • Pressure sensitive indicating device
    • 压敏指示装置
    • US4184376A
    • 1980-01-22
    • US969256
    • 1978-12-13
    • Timothy J. ThomasHarold A. Manguson
    • Timothy J. ThomasHarold A. Manguson
    • G01L13/02G01L7/06G01L19/12
    • G01L7/06Y10S116/25
    • A device (10) for metering discrete lengths of filament utilized in a flexible filament vegetation cutting device is disclosed. The line metering device (10) is preferably used in flexible filament lawn mowers. An electric motor (28) rotatively drives a drive shaft (32) about its axis. A driving mechanism, preferably a spool (36) is coupled to the drive shaft (32) for rotation therewith whenever the drive shaft (32) is rotated. A driven mechanism, preferably a guide drum (84), is selectively coupled for rotation to the driving mechanism (36). The spool (36) has the flexible filament (66) wound about it and is coupled to one of the driven and driving mechanisms (84, 32) for rotation therewith. The metering mechanism includes a device (172) for rapidly decelerating the rotating drive shaft (32) and driving mechanism (36), together with a device (54) for disengaging the guide drum mechanism (84) from the spool (36) during the rapid deceleration whereby the guide drum (84) is free to rotate a discrete amount relative to the spool (36). In this manner a length of filament (66) is metered from the spool (36).
    • 公开了一种用于计量在柔性细丝植被切割装置中使用的细丝的分离长度的装置(10)。 线路计量装置(10)优选用于柔性长丝割草机。 电动马达(28)围绕其轴线旋转地驱动驱动轴(32)。 驱动机构,优选地,一个卷轴(36)联接到驱动轴(32),以随着驱动轴(32)旋转而随之旋转。 驱动机构,优选地是导向鼓(84),被选择性地联接以便旋转到驱动机构(36)。 卷轴(36)具有围绕其缠绕的柔性细丝(66),并且联接到驱动和驱动机构(84,32)之一以与其一起旋转。 计量机构包括用于使旋转的驱动轴(32)和驱动机构(36)快速减速的装置(172)以及用于在引导鼓机构(84)期间将引导鼓机构(84)与卷轴(36)分离的装置(54) 导向鼓(84)相对于卷轴(36)自由旋转离散量的快速减速。 以这种方式,从卷轴(36)计量长丝(66)的长度。