Patent ID: 8061252
Filing Date: 2011-11-22
Classification: B26D,B26F,Y10T

Abstract:
1. A hole punch element of a hole punch device, comprising: a frame guiding a substantially cylindrical punch pin at a location along a respective pin axis; wherein the frame includes a slot, and the pin axis extends along a height of the slot from a ceiling of the slot to a floor of the slot, and wherein the ceiling and the floor of the slot define a space able to receive paper sheets therebetween, and the floor includes a pin guide opening forming an anvil cavity in the floor aligned with the pin axis; wherein the slot includes a front, a rear, a left side, a right side, the slot being terminated by a wall at the rear of the slot and the slot is open at the sides and at the front opposite the wall, and the paper sheets extend between the sides of the slot; wherein the floor further includes an angled section extending in a non-perpendicular direction from the pin axis and in a non-parallel direction from the ceiling, the angled portion being angled to include an axial elevation change across the anvil cavity of between about 8% to 50% inclusive of the pin diameter to form first and second floor levels, one at each side of the anvil cavity; and wherein the angled portion is angled with respect to a direction extending substantially completely across the anvil cavity, the floor is offset between the first and second floor levels at the location of the punch pin, and the first and second floor levels are respectively spaced by substantially different distances from the ceiling.