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    • 22. 发明授权
    • Round shaft chisel
    • 圆形凿子
    • US07490912B2
    • 2009-02-17
    • US11820491
    • 2007-06-19
    • Bernd Holl
    • Bernd Holl
    • E21C35/19
    • E21C35/197
    • A round shaft chisel with a clamping sleeve, wherein the round shaft chisel has a chisel head and a chisel shaft rotatably maintained in the clamping sleeve. A pivot bearing is between an inner contour of the clamping sleeve and a shaft contour of the chisel shaft so that a center longitudinal axis of the round shaft chisel is pivotably seated with respect to a center longitudinal axis of the clamping sleeve. As a result of the induced tumbling motion of the round shaft chisel within the clamping sleeve 30, improved dirt removal can be assured during operations. The improved rolling action results in reduced wear between the clamping sleeve and the chisel shaft, which has advantageous results regarding the service life.
    • 具有夹紧套筒的圆形凿子,其中圆形凿子具有可旋转地保持在夹紧套筒中的凿头和凿子轴。 枢转轴承在夹紧套筒的内轮廓和凿子轴的轴轮廓之间,使得圆形凿子的中心纵向轴线相对于夹紧套筒的中心纵向轴线可枢转地定位。 由于圆筒凿在夹紧套筒30内引起的翻滚运动,在操作过程中可以确保改进的除尘。 改进的滚动动作导致夹紧套筒和凿子轴之间的磨损减小,这在使用寿命方面具有有利的结果。
    • 30. 发明申请
    • Cutting tool retention apparatuses
    • 切削刀具保持装置
    • US20080030065A1
    • 2008-02-07
    • US11897365
    • 2007-08-30
    • Joseph Frear
    • Joseph Frear
    • E21C35/197
    • E21C35/197
    • Cutting tool assemblies and retention sleeves. The assemblies may include a support member that has a sleeve-receiving hole therethrough and a cutting tool that has an elongated shank. Various configurations of sleeve segments are disclosed for non-rotatably supporting the elongated shank of the cutting bit in the support member. Such sleeve segment embodiments may be provided with a plurality of axially extending notches to establish segments of various degrees of interference fit between the sleeve and the support member when seated in the sleeve-receiving hole of the support member.
    • 切割工具组件和保留套管。 组件可以包括具有穿过其中的套筒容纳孔的支撑构件和具有细长柄的切割工具。 公开了用于不可旋转地支撑支撑构件中的切割钻头的细长柄的套筒段的各种构造。 这样的套筒段实施例可以设置有多个轴向延伸的凹口,以在坐在支撑构件的套筒容纳孔中时在套筒和支撑构件之间建立不同程度的过盈配合的段。