4. Tool driving or impacting
  5. Means to drive tool about an axis
  6. Gear drive

Chin-Tan Huang

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Operating device for a screwdriver

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate

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Ratchet device for a screwdriver

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate

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Ratchet driving mechanism

192 clutches and power-stop control – Clutches – Automatic
Patent

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Ratchet driving mechanism with two sets of pawls

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate

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Ratchet wrench

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate

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Profile ID: LFUS-PAI-P-398178

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