Patent ID: 7395955
Filing Date: 2008-07-08
Classification: B25C

Abstract:
1. A desktop stapler, comprising: a body having a staple chamber; a strike plate movably mounted to the body between a rest position and a loaded position, the strike plate being adapted to drive a staple from the staple chamber and into an object, the strike plate comprising an opening; a power spring comprising at least one leaf spring the power spring having a first, fixed end fixedly mounted to the body and a second, free end formed as a tab adapted to engage with an edge of the opening in the strike plate, the power spring being adapted to repeatedly move the strike plate from the loaded position to the rest position to drive the staple, with the power spring adapted to provide an output force on the strike plate when the strike plate is in the loaded position, wherein the power spring comprises a rest configuration when the strike plate is in the rest position and a loaded configuration when the strike plate is in the loaded position; a loading mechanism mounted in the body and adapted to repeatedly move the strike plate from the rest position toward the loaded position, the loading mechanism comprising: an actuation surface adapted to cooperate with the trigger to rotate the trigger foot; and a handle pivotally mounted to the body, the handle having a first area contoured to cause the lever to rotate about its pivot point, whereby pivoting the handle causes the first area of the handle to act on the first end of the lever to pivot the lever such that the second end of the lever moves the trigger into contact with the actuation surface and thereby loads the power spring and raises the strike plate from the rest position toward the loaded position whereupon the trigger pivots relative to the lever arm to disengage from the power spring when the strike plate is in the loaded position; and at least one dampener mounted to the body and adapted to absorb some impact of the power spring upon return from the loaded configuration to the rest configuration.