Patent ID: 8528373

Claim:
A lock, comprising: a housing bearing a hole; a bolt supported by and travelling within a plane between a first position protruding beyond said housing and a second position retracted within said housing, said bolt bearing a guide aperture and a drive aperture; a cylinder plug perforated by a keyway having an axis transversely oriented relative to said plane, said cylinder plug having an exposed peripherial surface surrounding said keyway; a cam positioned between said housing and said bolt, to rotate in response to rotation by said cylinder plug and force said bolt to travel between said first position and said second position as a key conformingly corresponding to said cylinder plug manually applies a rotational force to said cylinder plug through an arc centered upon said axis; an electronic circuit containing a memory, said electronic circuit being mounted within said housing and borne by said cam to rotate with said cam through said arc, said electronic circuit operationally responding to electrical representations of data carried by the key conformingly corresponding to said lock; a movable blocking member selectively obstructing access to said circuit board via said keyway; and a release mounted upon and borne by said cam, and operationally activated by said electronic circuit to move between a deployed position preventing rotation of said cam relative to said housing, and a released position accommodating said rotation of said cam relative to said housing.