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    • 8. 发明申请
    • ROUTING APPARATUS WITH DUST EXTRACTION SYSTEM
    • 带除尘系统的路由设备
    • WO1984001320A1
    • 1984-04-12
    • PCT/US1983001351
    • 1983-09-06
    • OLSON, Larry, E.OLSON, Eugene, T.
    • B27G03/00
    • B27C5/00B23Q11/0046Y10S408/71Y10T408/50Y10T409/304088Y10T409/306608
    • In a preferred form, the dust extraction sytem is intended to be used in combination with a conventional router (70). The system includes a plate (38), one side of which confronts the router's ring base (73). The plate (38) has a relatively small hole (40) through which the cutter bit (76) extends and an offset larger hole (96) through which dust-laden air is withdrawn. A recessed sub base (80), preferably of plastic, confronts the other side of the plate (38), the sub base (80) also having a relatively large hole (94) through which the bit (76) extends. Both the plate (38) and the sub base (80) conform in shape to each other, having portions extending laterally to one side of the router's base (73). The offset hole (96) in the plate (38) is formed in its laterally extending portion and the recess or cavity (92) in the sub base (80), forming a passage with the overlying plate (38), extends to this hole (96). A sleeve (104) surrounding the hole (96) enables a source (118) of subatmospheric pressure to be connected in order to extract the dust produced by the router's bit (76). Provision is made for mounting the router (70) for reciprocal movement toward and away from a frame (10) on which the work is placed (130).