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    • 2. 发明申请
    • Caster and system for mobile device
    • 适用于移动设备的脚轮和系统
    • US20080209673A1
    • 2008-09-04
    • US12070939
    • 2008-02-22
    • Rory A. CooperAndrew M. KwarciakMark A. McCartney
    • Rory A. CooperAndrew M. KwarciakMark A. McCartney
    • B60B33/00
    • B60B33/025B60B33/0005B60B33/0021B60B33/0039B60B33/0049B60B33/0057B60B33/0068B60B33/0073Y10T16/184
    • An improved caster comprising a caster mount attachable to a frame of a mobile device, caster stem attached to the caster mount and operable to attach to a caster fork and wheel assembly, and a biasing means operable to restrict the rotation of the caster stem and thereby to prevent caster drift and flutter and to promote tracking of the mobile device. The biasing means can be in manner whereby the caster stem has at least one vertical notch defined therein and the biasing means comprises a spring plunger located in the caster mount. The spring plunger has an internal spring and a movable ball member attached to the spring and which faces the caster stem whereby the ball is biased against the caster stem and situated within the caster stem notch when the caster stem is in a desired rotational position. The biasing means can also employ magnets located in the caster stem and caster mount which align at opposite attracting poles when the caster is in a desired position.
    • 一种改进的脚轮,其包括可连接到移动设备的框架的脚轮座,连接到脚轮座的脚轮杆,并且可操作地连接到脚轮叉和车轮组件;以及偏压装置,其可操作以限制脚轮杆的旋转,从而 以防止脚轮漂移和颤动并促进移动设备的跟踪。 偏置装置可以以这样的方式,由此脚轮杆具有限定在其中的至少一个垂直槽口,并且偏置装置包括位于脚轮座中的弹簧柱塞。 弹簧柱塞具有内部弹簧和可移动的球形构件,其附接到弹簧并且面向脚轮杆,由此当脚轮杆处于期望的旋转位置时,球被偏压到脚轮杆并且位于脚轮杆切口内。 偏置装置还可以使用位于脚轮杆和脚轮座中的磁体,当脚轮处于期望位置时,脚轮座在相对的吸引极处对准。