Patent ID: 7367249
Filing Date: 2008-05-06
Classification: B25B,Y10T

Abstract:
1. A wrench comprising: a handle head including two locking portions, and including through holes formed in the locking portions of the handle head, a socket plug including a chamber and including through holes formed in the socket plug, and including a hole formed in the socket plug, a press rod disposed in the through holes of the socket plug and in the through holes of the handle head, the press rod including a concave portion formed therein, a locking ball disposed in the hole of the socket plug, a push rod and a return spring disposed in the chamber of the socket plug, the push rod including a recess for selectively receiving the locking ball, and the return spring pressing the push rod to push the locking ball and pressing the push rod to engage with the concave portion of the press rod, and two return springs disposed between the locking portions of the handle head and end portions of the press rod for forcing the press rod to press the push rod, either of the end portions of the press rod being allowed to be pressed to press the push rod and to push the locking ball.