Patent ID: 8579281

Claim:
A sheet inverter apparatus comprising: a rotatable support having an axis of rotation and at least first and second arms radiating outwardly from said axis of rotation, an end of said first arm being attached to a first crank and an end of said second arm being attached to a second crank, and said first arm and said second arm forming a first coupling rod linking said first crank and said second crank in a drag link mechanism; a first nip assembly mounted to said first crank said first nip assembly including a first nip drive roll and a first nip idler roll positioned so as to define a first nip therebetween; a second nip assembly mounted to said second crank, said second nip assembly including a second nip drive roll and a second nip idler roll positioned so as to define a second nip therebetween, wherein, said support is rotatable to adjust positions of said first and second nips about said axis of rotation, wherein a paper feed path leading into said sheet inverter apparatus is defined by the first or the second nip assembly, and a paper outlet path leading away from said sheet inverter apparatus is defined by, selectively, the other of the first or the second nip assembly and, leading away from said sheet inverter apparatus, wherein paper is fed into the sheet driver apparatus through the paper feed path with an original orientation and exited from said sheet inverter apparatus in an orientation inverted to the original orientation.