| 摘要 |
A handheld rotary power unit includes a housing with a handle and a distal end portion, a motor shaft extending through the distal end portion of the housing, and a quick-release chuck assembly connected to the motor shaft. An actuator assembly is provided on the housing that enables a user to operate the quick-release chuck assembly with a hand of the user while that hand of the user is holding the handle portion of the housing. Actuator assembly examples include an electrically powered solenoid, a manually powered linkage, and a pneumatically powered piston.
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