Ratchet screwdriver

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10384334
APP PUB NO 20190099864A1
SERIAL NO

15721737

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A ratchet screwdriver includes a mounting seat, a control member, a driving shaft, two pawls and two springs. The mounting seat has a receiving space, a first slot and a second slot. A passage is defined through the mounting seat. The first and second slots have a hole respectively. The driving shaft has a ratchet portion located in the receiving space. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft. The control member has two control plates to pivot the pawls to disengage from the ratchet portion of the driving shaft.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
TSAI CHIUNG CHANGNot Provided

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Tsai, Chiung-Chang Taichung, TW 20 252
Tsai, Chung-Yu Taichung, TW 21 108

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