Patent ID: 6928905

Claim:
An adjustable wrench ( 10 ) comprising: a handle ( 11 ) and a head ( 12 ) connected to an end of the handle ( 11 ), a fixed jaw ( 13 ) extending from the head ( 12 ) and a groove ( 21 ) defined in an end of the head ( 12 ), a through hole ( 22 ) defined transversely through the head ( 12 ) and communicating with the groove ( 21 ), the through hole ( 22 ) forming a circular hole in an outer surface of the head ( 12 ); a movable jaw ( 40 ) having a cylindrical rack piece ( 42 ) and a flange ( 41 ) connected between the movable jaw ( 40 ) and the rack piece ( 42 ), the flange ( 41 ) extending from a root portion of the movable jaw ( 40 ) and ending at a distance from a distal end of the rack piece ( 42 ), the rack piece ( 42 ) movably inserted in the groove ( 21 ) and the through hole ( 22 ), and a thumb screw ( 30 ) rotatably engaged with a hole defined through the head ( 12 ) and engage with the rack piece ( 42 ).