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    • 3. 发明授权
    • Landscape rake with fluid controlled float capability
    • 具有流体控制浮子功能的风景耙
    • US06223828B1
    • 2001-05-01
    • US09382380
    • 1999-08-24
    • Clint W. PaulsonWilliam C. Swick
    • Clint W. PaulsonWilliam C. Swick
    • A01B4300
    • E02F3/962A01B43/00E02F3/404
    • An improved landscape rake including a rotatably operable rake mechanism for performing a raking function, a bucket for receiving material raked by the rake mechanism, and a fluid actuator connected to the rake mechanism operable for moving the rake mechanism relative to the bucket, the fluid actuator having a first port adapted for connection to a source of pressurized fluid for receiving the pressurized fluid therefrom for moving the rake mechanism to a position proximal to the bucket and a second port adapted for connection via a fluid path to a fluid receiver for discharging fluid thereto, the improvement including a fluid control system for the fluid actuator including a second fluid path connecting the first port of the fluid actuator with the first named fluid path and a valve disposed in the second fluid path operable for allowing fluid flow therethrough from the first port to the first named fluid path while preventing fluid flow from the first named fluid path to the first port to allow the rake mechanism to float when in the position proximal to the bucket.
    • 一种改进的风景耙,包括用于执行耙动功能的可旋转操作的耙机构,用于接收由耙机构耙的材料的铲斗和连接到耙机构的流体致动器,其可操作以相对于铲斗移动耙机构, 具有适于连接到加压流体源的第一端口,用于接收来自加压流体的加压流体,用于将所述耙式机构移动到靠近所述铲斗的位置,以及适于经由流体路径连接到流体接收器以将流体排出的第二端口 该改进包括用于流体致动器的流体控制系统,其包括将流体致动器的第一端口与第一命名流体路径连接的第二流体路径和设置在第二流体路径中的阀,其可操作以允许流体从第一端口流过 到第一个命名的流体路径,同时防止流体从第一个命名的流体路径流动到第一个po 以允许耙机构在靠近铲斗的位置时浮起。