Screwdriver having quick release tool shank background of the invention
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United States of America Patent
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Issued Date -
Apr 17, 2008
app pub date -
Oct 17, 2006
filing date -
Oct 17, 2006
priority date (Note) -
Abandoned
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Abstract
A screwdriver includes a handle, a fixing member mounted in the handle, a release member slidably mounted on and axially movable relative to the fixing member, and a tool shank locked on the release member and detachable from the release member by movement of the release member relative to the fixing member. Thus, the tool shank is supported by the fixing member and the release member which are supported by the handle to enhance the strength of the screwdriver so that the screwdriver is not easily broken or worn out, thereby enhancing the lifetime of the screwdriver. In addition, the tool shank is mounted on and detached from the fixing member and the handle by pressing the release member, thereby facilitating the user mounting and replacing the tool shank.
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