4. Tool driving or impacting
  5. Impacting devices
  6. With impact cushioning means

Takuo Arakawa

Inventor

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Bit mounting device

Chucks or sockets – Socket type – Lost motion
Patent

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Hammer drill with a mode change-over mechanism

Tool driving or impacting – Drive adjustable to completely change kind of drive – Adjustable to impacting device
Patent

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Percussive tool having a reduced impact at the start of percussi

Tool driving or impacting – Impacting devices – With impact cushioning means
Patent

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Portable electric hammer

Tools and hardware – Other tools and implements – With relative movement of parts while performing function
Patent

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Power tool

Tool driving or impacting – Impacting devices – Hammer head driven by pulsating fluid pressure
Reexamination Certificate

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Profile ID: LFUS-PAI-P-502388

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