Invention Grant
US07732747B2 Tool with contactless switch 失效
带非接触开关的工具

Tool with contactless switch
Abstract:
An electric tool has a handle, and an element for varying tool functions located in the handle and including a photoelectric cell incorporated onto the handle in such a way that if the photoelectric cell is completely or partly covered, a tool function is achieved on a specification in accordance with a predetermined sequence.
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