Patent ID: 8028554

Claim:
A cylinder lock device comprising: a body housing having a bore, with a direction of elongation defining an axial direction for the device; a first rotatable cylindrical plug in the bore, the plug having an axially extending key slot from at least one end of the plug; a plurality of driver pins configurable substantially perpendicular to the key slot, located within the body housing and substantially outside of the plug, and displaceable partially into and from the plug; a plurality of tumbler pins corresponding to and positionable substantially collinear with each one of the plurality of driver pins and substantially inside the plug, the tumbler pins displaceable by a key to bias the driver pins to enable rotation of the plug, the driver pins adapted to displace the respective tumbler pins; and a displacement mechanism being deployed within the body housing and adapted to displace the plurality of driver pins thereby selectively enabling rotation of the plug when no key is present in the slot, the displacement mechanism not including a spring that moves the displacement mechanism, the displacement mechanism not including any key and the displacement mechanism further including (i) a pin driver arm formed with tooth-like plungers to contact corresponding driver pins, (ii) a linear driving arm and (iii) a linkage driver unit.