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easy access for lifting the stapler off a desk, horizontal or vertical resting positions, and integrated soft grip undersurface. The base surrounds the rear of the stapler body to provide a smooth exterior so that the device is natural to use both horizontally and vertically. A simple reset spring provides a smooth reset action as the handle is raised. A staple track includes enlargement features to fit a larger staple pusher spring.” Source: ME240/106S: Product Dissection Appliances Source: ME240/106S: Product Dissection Appliances The Stapler Wars ? Requires ~7lbs of force to use pared to 1530lbs for regular stapler ? At Staples stores, sales average 20 units/week, 10 times their estimate ? This was a wakeup call for Swingline, Boston, and StanleyBostitch ? PaperPro’s inspiration: EasyShot174。 Staple Gun ME240/106S: Product Dissection Appliances EasyShot174。 Staple Gun Power spring Recoil spring Handle Lever 1 Lever 2 Striker Pin Absorber Source: S. Shooter, Bucknell University ME240/106S: Product Dissection Appliances How EasyShot174。 Staple Gun Works ? User presses on the handle, which is part of lever 1 ? Lever 1 moves, which in turn moves lever 2, causing lever 2 to press the recoil spring ? Lever 2 pushes the striker upwards, which is connected to the power spring, pressing the power spring, and storing energy ? Lever 2 rotates about the pin until striker connection is lost, releasing the energy stored in the power spring ? The striker moves quickly downward, and a staple is fired。 the recoil spring returns the assembly to its original position ? The staples are pushed along the staple track by the staple pusher and are pushed against the interchangeable staple size guide Source: S. Shooter, Bucknell University ME240/106S: Product Dissection Appliances How a PaperPro Stapler Works Source: