US Patent 6857341 F-type wrench structure
Patent 6857341 was granted and assigned to LG on February, 2005 by the United States Patent and Trademark Office.
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A wrench structure includes a body, a rotation member, a drive rod, a press rod, and an elastic member. The rotation member is rotated relative to the body freely so as to adjust the included angle between the rotation member and the body arbitrarily. Thus, the operation angle of the wrench structure can be adjusted arbitrarily, thereby facilitating the user operating the wrench structure. In addition, the drive rod is limited by the rotation member, so that the drive rod is received in the body without detachment. Further, the press rod is limited by the drive rod, so that the press rod is received in the body without detachment.
US Patent 6857341 F-type wrench structure
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