Patent ID: 7431186
Filing Date: 2008-10-07
Classification: B25C

Abstract:
1. A stapler comprising: a base having two connection plates on a top of a rear end thereof and each of the connection plates having a first hole toward the rear end of the base, a third hole toward a front end of the base, and a second hole located between the first and the third hole, an anvil fixed on the top of the front end of the base; a magazine having a space defined therein and staples received in the space, a hole defined through a rear end of the magazine and pivotably connected with the first holes in the connection plates by a first pin, an outlet defined in an underside of a front end of the magazine; a first arm having a hole defined transversely through two sidewalls thereof and a second pin extending through the holes in the first arm and the second holes of the connection plates, two inclined grooves defined through the two sidewalls of a rear end of the first arm; a second arm located between the first arm and the magazine, a rear end of the second arm movably engaged with the two grooves in the first arm, two holes defined transversely through two sidewalls of the second arm and a third pin extending through the holes in the second arm and the third holes of the two connection plates, an action plate connected to a front end of the second arm and located corresponding to the outlet, and a distance (W) from the second holes to the front end of the first arm being longer than a distance (X) from the rear end of the second arm to the second holes of the connection plates, a distance (Y) from the rear end of the second arm to the third holes of the connection plates being longer than a distance (Z) from the front end of the second arm to the third holes of the connection plates.