Patent ID: 6223571
Filing Date: 2001-05-01
Classification: H01H,H03K,Y10T

Abstract:
A keyswitch, comprising:a non-magnetic housing;a magnetic sensing device disposed within the housing, the sensing device operable to detect a magnetic field of a predetermined strength, and to produce a flag signal as a function of detecting the magnetic field;a lock cylinder disposed at least in part within the housing and physically isolated from the magnetic sensing device, the lock cylinder having a first end operable to receive a key having a first characteristic and having a first portion operable to rotate to a first position; anda magnetic device coupled with the first portion of the lock cylinder at a second end of the lock cylinder, the second end being opposite the first end, the magnetic device operable to rotate with the first portion of the lock cylinder to cause the magnetic sensing device to detect a magnetic field from the magnetic device.