Patent ID: 7708179
Filing Date: 2010-05-04
Classification: B25C

Abstract:
1. A spring actuated stapling device, comprising: a body; a track along a bottom of the body to guide staples toward a front of the stapling device; a handle pivotably attached to the body wherein the handle includes an initial position where the handle is pivoted to a farthest position away from the body and a pre-release position where the handle is pivoted toward the body; a striker movable substantially vertically within the body between an initial rest position above the track and a lowermost position in front of the track; a power spring disposed within the body linked to the striker; a latch movably attached to the body, the latch extending to a location of engagement with the striker, the latch releasably engaging the striker to hold the striker in the initial striker position; wherein the latch includes an unstable engagement with the striker whereby the latch is biased to disengage from the striker and a cam provides a link between the handle and the latch; wherein the latch releasably presses a face of a front region of the power spring, and the latch releasably engages the striker through the power spring; and wherein at the pre-release position of the handle, an extension of the handle engages the cam whereby the latch disengages from the striker, and the striker accelerates to the lowermost position under bias of the power spring as the power spring moves to a lower position.