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    • 8. 发明授权
    • Safety hand cart
    • 安全手推车
    • US09108662B1
    • 2015-08-18
    • US14561560
    • 2014-12-05
    • Craig J. Scholin
    • Craig J. Scholin
    • B62B5/02B62B1/16B62B5/04
    • B62B1/16B62B1/12B62B5/04B62B5/0438
    • A wheelbarrow is provided comprising a bed for receiving a load, with an axle mounted to the bed. First and second load-bearing wheels are rotatably mounted to the axle on opposite sides of the bed. First and second rotatable stabilizing wheels are mounted to first and second support arms, respectively, with each of the first and second support arms being rotatably mounted relative to the axle on opposite sides of the bed. A first locking mechanism is associated with at least one, and preferably each, of the first and second load-bearing to selectively permit or prevent rotation of the load-bearing wheels relative to the axle. A second locking mechanism is associated with at least one, and preferably each, of the first and second support arms to selectively permit or prevent rotation of the support arms relative to the axle. An actuator is provided for selectively locking and unlocking each of the first and second locking mechanisms.
    • 提供了一种手推车,其包括用于接收负载的床,其中轴安装到床。 第一和第二承重轮可旋转地安装在床的相对侧上的轴上。 第一和第二可旋转稳定轮分别安装到第一和第二支撑臂,其中第一和第二支撑臂中的每一个相对于床的相对侧上的轴可旋转地安装。 第一锁定机构与第一和第二承重的至少一个,优选地每个相关联,以选择性地允许或防止承载轮相对于轴的旋转。 第二锁定机构与第一和第二支撑臂的至少一个,优选地每个相关联,以选择性地允许或防止支撑臂相对于轴的旋转。 提供致动器用于选择性地锁定和解锁第一和第二锁定机构中的每一个。