Patent ID: 8453903
Filing Date: 2013-06-04
Classification: B25C

Abstract:
1. A spring actuated stapling device, comprising: a body including a length from a front to a rear; a track disposed along a bottom of the body to guide staples toward a front of the stapling device; a lever pivotably attached at a lever pivot location on the body, the lever movable between a rest position and a pressed position; a striker movable vertically within the body at the front of the body between an initial rest position above the track and a lower position in front of the track; a power spring disposed within the body linked to the striker, wherein the power spring includes a relaxed free state, a pre-stressed rest state, and an energized deflected state, the power spring being deflected and energized as the lever moves from the rest position to the pressed position, and at the pressed position the energized power spring is suddenly released to drive the striker to its lower position; a cage at least partially confining the power spring to normally retain the power spring in the pre-stressed rest state, wherein at least the power spring and cage form a spring/cage subassembly elongated lengthwise along the body, the spring/cage subassembly being pivoted to the body at a subassembly pivot toward the rear of the body, wherein the power spring and the cage pivot about the subassembly pivot, the subassembly pivot being separately located on the body from the lever pivot location, and wherein the spring/cage subassembly is further linked to the lever; the spring/cage subassembly having an upper position wherein the power spring is in the pre-stressed rest state, and having a lower position, wherein a forward extension of the subassembly pivotably engages and moves with the striker; and wherein the initial rest position of the striker has the spring/cage subassembly in the upper position.