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公开(公告)号：US20240275240A1
公开(公告)日：2024-08-15
申请号：US18436469
申请日：2024-02-08
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Jacob N. Nemec , Dawid A. Bilski , Linnea Emerson , Troy C. Thorson , Anthony E. Breitbach , Terry L. Timmons , Brandon L. Yahr , Paul J. Grosskreuz , Russell M. Rapant
Abstract: An electric motor comprising a stator and a rotor assembly at least partially received in the stator. The rotor assembly includes a rotor body, a fan, and a shaft. The rotor body includes a lamination stack which defines a central aperture. The fan is formed separately from the rotor body, and the fan is coupled to the rotor body by a torque coupling. The shaft includes an outer surface. The shaft is pressed into the central aperture of the lamination stack with the outer surface engaged with the central aperture by an interference fit.
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公开(公告)号：US20240342888A1
公开(公告)日：2024-10-17
申请号：US18635271
申请日：2024-04-15
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Anthony E. Breitbach , Matthew W. Roeber , Eric A. Lembach , Zachary J. Geschke , Jacob P. Schneider , Braden A. Roberts
IPC: B25D17/06 , B23K26/356 , B24C1/10 , B25B21/02 , B25B23/00
CPC classification number: B25D17/06 , B23K26/356 , B24C1/10 , B25B21/02 , B25B23/0035 , B25D2217/0015
Abstract: An anvil for an impact tool including an impact receiving portion at an end of the anvil, the impact receiving portion including a lug having an impact receiving surface that receives impact from a hammer of the rotary power tool, a shank portion extending from the impact receiving portion, a drive portion located at an end of the shank portion opposite from the impact receiving portion, the drive portion including a plurality of drive surfaces configured to engage a tool bit, and a hardened layer formed on at least one of the drive portion or the impact receiving surface, the hardened layer having a higher hardness than a remaining portion of the anvil. The hardened layer is formed by a heating process.
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