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公开(公告)号：US4198178A
公开(公告)日：1980-04-15
申请号：US919467
申请日：1978-06-27
申请人： Per Carlstrom , Bo Lundberg , Gert Persson
发明人： Per Carlstrom , Bo Lundberg , Gert Persson
CPC分类号： E04F21/248
摘要： A concrete floor finisher for finishing newly-placed concrete. The machine comprises a rotor hub, a plurality of rotor arms on the hub for rotation about an axis, a blade pivotable on each arm, and a motor for driving the rotor hub. The pitch of the blades is adjustable depending upon the condition of the wet concrete, by a piston and cylinder centrally located about the axis of rotation of the rotor, and a stud connected at one end to the blades and at its other end engaging a portion of the piston to adjust the pitch of the blades in response to the axial displacement of the piston.
摘要翻译： 用于整理新配混凝土的混凝土地板整理机。 该机器包括转子毂，毂上的多个转子臂，用于围绕轴线旋转，可在每个臂上枢转的叶片以及用于驱动转子毂的马达。 叶片的间距可根据湿混凝土的状况来调整，活塞和圆柱体围绕转子的旋转轴线居中定位，并且在一端连接到叶片并且在其另一端与一部分接合的部分 的活塞，以响应于活塞的轴向位移来调节叶片的桨距。
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公开(公告)号：US4317314A
公开(公告)日：1982-03-02
申请号：US149474
申请日：1980-05-13
申请人： Per Carlstrom , Gert Persson
发明人： Per Carlstrom , Gert Persson
摘要： A machine for finishing a flat surface, for example a floor made of cement, concrete, or similar hardened material, includes a chassis supported by at least three wheels arranged to carry the weight of the chassis. A grinding tool, preferably a grinding wheel, is mounted to the chassis to rotate about a vertical rotational axis and to rest on the floor when grinding work is in progress. The grinding wheel is mounted to move freely in the vertical direction relative to the chassis such that the weight of the grinding wheel is carried by the floor, and the grinding pressure is readily adjustable for differing applications.
摘要翻译： 用于整理平坦表面的机器，例如由水泥，混凝土或类似的硬化材料制成的地板，包括由至少三个轮支撑的底盘，所述底盘被布置成承载底盘的重量。 研磨工具，优选地是砂轮，安装到底盘上以围绕垂直旋转轴线旋转，并且当研磨工作进行时搁置在地板上。 砂轮被安装成相对于底盘在垂直方向上自由移动，使得砂轮的重量由地板承载，并且研磨压力容易地针对不同的应用进行调节。
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