Impact screwdriver having a shaft locking device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8191649
APP PUB NO 20100126745A1
SERIAL NO

12592361

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The present invention provides both an impact switching function and a shaft locking function for use in an impact screwdriver. The impact screwdriver includes a housing, a motor located in the housing, a motor drive shaft driven by the motor, a hammer which can move axially and rotate around the motor drive shaft, a hammer anvil, an impact switching device and a shaft locking apparatus. The shaft locking apparatus has a mating member coupled with the hammer anvil, an engagement ring fixed to the housing and a middle member located between the mating member and the engagement ring. The shaft locking apparatus has a locked position, where the mating member is secured to the hammer anvil and also secured to the engagement ring and the housing.

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First Claim

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Patent Owner(s)

  • CHERVON LIMITED

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Zhu, Yongbing Nanjing, CN 6 18

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