Patent ID: 7689143

Claim:
A device for driving a pin that fastens a printer cartridge drum to a drum axle, the pin comprising a first pin end that defines a pin recess and a second pin end opposite the first pin end, the device comprising: a first shaft having a plurality of male threads protruding from and surrounding the first shaft; a second shaft attached to the first shaft at a first end of the second shaft, the second shaft comprising a diameter that is smaller than the diameter of the first shaft, the second shaft further comprising a tapering end opposite the first end, the tapering end being configured to contact the pin at the first pin end and fit within the pin recess; a shaft receiver defining a shaft receiver recess, the shaft receiver recess configured to accommodate the first shaft, the first shaft being moveable within the recess, wherein the movement of the first shaft is configured to drive the pin and detach the printer cartridge drum from the drum axle; a C-shaped body, the shaft receiver being positioned on a first end of the body, the C-shaped body comprising a second end opposite the first end, the second end defining a second end recess, the second end recess being configured to receive the pin being driven by the first shaft; an alignment pin shaft configured to hold the pin from the second pin end; and, a tie comprising a first end attached to the C-shaped body and a second end attached to the alignment pin shaft.