초록 ▼

A cam assembly may be constructed with lock cylinder perforated by a centrally positioned keyway, and having an exposed circumferential surface surrounding the keyway rotatably fitted within a centrally positioned keyhole of a housing, and rotated within the centrally positioned keyhole in response

A cam assembly may be constructed with lock cylinder perforated by a centrally positioned keyway, and having an exposed circumferential surface surrounding the keyway rotatably fitted within a centrally positioned keyhole of a housing, and rotated within the centrally positioned keyhole in response to rotational force applied by a key conformingly corresponding to the lock cylinder through an arc. A cam is positioned within the housing to rotate with the lock cylinder as the key conformingly corresponding to the lock manually applies a rotational force to the lock cylinder rotates through the arc, while a member attached to the cam and eccentrically positioned relative to the keyway, drives the bolt between extended and retracted positions as the lock cylinder rotates through the arc. An electronic circuit containing a memory and a microprocessor, is mounted upon and supported by the cam to rotate with the cam through the arc. The electronic circuit operationally responds to digital data carried by the key that is in electronic conformance to data stored within the memory, by electrically energizing a release mechanism that is spaced-apart from the axis of rotation of the cylinder plug, to move between a deployed position preventing rotation of the cam relative to the housing, and a released position accommodating the rotation of the cam relative to the housing.

대표청구항 ▼

[What is claimed is:] [1.]a housing bearing a hole;a bolt supported by and travelling when a plane belayed a first position protruding beyond said housing and a second position retracted within said housing, said bolt being perforated by a guide aperture and a drive aperture;a cylinder plug perforat

[What is claimed is:] [1.]a housing bearing a hole;a bolt supported by and travelling when a plane belayed a first position protruding beyond said housing and a second position retracted within said housing, said bolt being perforated by 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 circuimferential surface surrounding said keyway, and a key retainer positioned within said cylinder plug to retain a shank of a key inserted within said cylinder plug;a cam positioned along said axis between said cylinder plug and said bolt, to rotate with said cylinder plus 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;a shear pin exhibiting a shear force, said shear pin extending between said cylinder plug and said cam, to transmit said rotational force between said cylinder plug and said cam until said rotational force exceeds said shear force:a spacer extending along said axis from said cam and into said guide aperture;a guide centered along said axis extending from said spacer, conforming to and received within said hole borne by said housing;a second pin spaced radially apart from said axis, extending from said cam and into said drive aperture;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 digital data carried by the key conformingly corresponding to said lock; anda 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.