Hexagonal wrench

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8302255
APP PUB NO 20110271800A1
SERIAL NO

12775462

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Abstract

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A hexagonal wrench has a head. The head has an end surface, six equal side surfaces and at least one groove. Each side surface has a left edge segment and a right edge segment adjacent to the left edge segment of an adjacent side surface. The at least one groove is formed in at least one of the right edge segments and the left edge segments and extends to the end surface. Therefore, the head can engage securely an inner surface of a socket to rotate the socket even when the socket is worn or rounded.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lin, Tsung-Ming Ta-Li, TW 9 81

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