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公开(公告)号：US11027404B2
公开(公告)日：2021-06-08
申请号：US16457054
申请日：2019-06-28
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Peter Malak , Michael R. Sande , Ryan Allen Dedrickson , Guang Hu , Fan Bin Zeng , Wei Chao Xu , Qiao Cai
Abstract: A power tool includes a housing having a motor housing portion and a front casing coupled to the motor housing portion. The power tool also includes an electric motor positioned within the motor housing portion, a drive assembly having an output shaft to which a tool element for performing work on a workpiece is attachable, and a powdered metal bushing disposed within the front casing that rotatably supports the output shaft.
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公开(公告)号：US20210291339A1
公开(公告)日：2021-09-23
申请号：US17340803
申请日：2021-06-07
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Peter Malak , Michael R. Sande , Ryan Allen Dedrickson , Guang Hu , Fan Bin Zeng , Wei Chao Xu , Qiao Cai
Abstract: A tool includes a housing, a drive assembly including an output shaft extending from the housing such that a tool element for performing work on a workpiece is attachable to the output shaft, and a bushing disposed within the housing. The bushing rotatably supports the output shaft. The bushing is impregnated with lubricant such that the bushing is self-lubricating, and the bushing has an impregnation ratio between about 5% and about 25%.
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公开(公告)号：US11975435B2
公开(公告)日：2024-05-07
申请号：US17340803
申请日：2021-06-07
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Peter Malak , Michael R. Sande , Ryan Allen Dedrickson , Guang Hu , Fan Bin Zeng , Wei Chao Xu , Qiao Cai
CPC classification number: B25D17/26 , B23P15/00 , F16C17/04 , F16C33/1025 , F16C33/104 , B22D19/00 , B22F3/12 , B25D16/00 , B25D2217/0019 , B25D2217/0096 , F16C2220/60
Abstract: A tool includes a housing, a drive assembly including an output shaft extending from the housing such that a tool element for performing work on a workpiece is attachable to the output shaft, and a bushing disposed within the housing. The bushing rotatably supports the output shaft. The bushing is impregnated with lubricant such that the bushing is self-lubricating, and the bushing has an impregnation ratio between about 5% and about 25%.
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公开(公告)号：US20200023503A1
公开(公告)日：2020-01-23
申请号：US16457054
申请日：2019-06-28
Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
Inventor： Peter Malak , Michael R. Sande , Ryan Allen Dedrickson , Guang Hu , Fan Bin Zeng , Wei Chao Xu , Qiao Cai
Abstract: A power tool includes a housing having a motor housing portion and a front casing coupled to the motor housing portion. The power tool also includes an electric motor positioned within the motor housing portion, a drive assembly having an output shaft to which a tool element for performing work on a workpiece is attachable, and a powdered metal bushing disposed within the front casing that rotatably supports the output shaft.
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