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    • 6. 发明申请
    • ELECTROPORTABLE DEVICE
    • WO2023038926A1
    • 2023-03-16
    • PCT/US2022/042691
    • 2022-09-07
    • ILLINOIS TOOL WORKS INC.
    • BAUDRAND, OlivierGRANDJEAN, PascaleNAYRAC, FredericRICORDI, Christian
    • B25C1/06
    • A portable electric device (20) comprising a cylinder (10) in which at least one movable piston (1) slides between a start position corresponding to the top of the cylinder and an end position corresponding to the bottom of the cylinder, said piston comprising means (2) configured to come into contact with an element (3) to be operated once the piston is in the end position or is between the start position and the end position. More particularly, the portable electric device comprises: power supply means intended to supply power to a first fixed coil (4), the first fixed coil being positioned facing an expulsion means (5) for expelling the piston when the piston is in the start position, the expulsion means being secured to a first face of the movable piston; and at least one braking means (7) for braking the piston that are configured to brake the piston when the piston is in the end position or approaching the end position. The movable piston (1) being composed of: a first part (11) made from a first material having an electromagnetic capability suitable for reducing magnetic losses and limiting the induction saturation; and a second part (12) made from a second material suitable for withstanding shocks while or after the piston (1) makes contact with the braking means; the first part (11) being separated from said braking means by the second part (12).