Abstract An electronically controlled lock assembly for a chamber door adapted to afford access to the chamber only to those who carry a passkey having a predetermined profile. Mounted on the door is a keyway having a group of electric switches therein which are selectively actuated by the inserted passkey in accordance with the profile thereof. The door is provided with a signal-operated locking mechanism which is activated to release the door lock only when an output signal is applied thereto. Disposed within the chamber is a logic circuit which is connected to the group of switches in the keyway to establish an electrical test pattern depending on which of the switches is activated and hence on the profile of the passkey. The logic circuit includes a switching panel operating in conjunction with an insertable coded reference key to produce a reference pattern depending on the key code, the logic circuit comparing the reference and test patterns to produce a control signal only when the patterns are coincident. The control signal is applied to an output circuit connected to the locking assembly to produce an output signal for releasing the lock.
Inventors
👤 Gerald M Goldman
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-24 06:26
CPC Classifications
E; E05; E05B; E05B49/00; E05B49/002; E05B49/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
266 words
An electronically controlled assembly associated with a solenoid whereby only those who carry a passkey having a predetermined profile may activate the solenoid, said assembly comprising: A. an electrically conductive passkey having edge notches therein creating lateral extensions to define a predetermined profile. B. a keyway mounted at a position accessible to key holders to receive said passkey, said keyway having an array of discrete electrical contacts therein which are selectively interconnected by the corresponding lateral extensions of a passkey inserted therein in accordance with the profile thereof, C. a logic circuit connected to said array of contacts to establish an electrical test pattern whose nature depends on which contacts in said array are interconnected by the inserted passkey, said logic circuit including a nonremovable switching panel having a set of electrical switches operable in conjunction with an insertable coded reference key having a profile defined by edge notches creating lateral extensions adapted to actuate switches in said set in registration therewith to produce an electrical reference pattern in accordance with the key code, and means to compare the test and reference patterns to produce a control signal only when the patterns match each other, said coded reference key having a profile which effectively conforms to the profile of the passkey producing test pattern matching the reference pattern pattern, and D. means responsive to said control signal to produce an output signal and to apply said output signal to said solenoid to activate same whereby said solenoid may be activated only by one in possession of a passkey producing a match with the operative reference key.
Claim 2
Dependent Claim
266 words
An electronically controlled assembly associated with a solenoid whereby only those who carry a passkey having a predetermined profile may activate the solenoid, said assembly comprising: A. an electrically conductive passkey having edge notches therein creating lateral extensions to define a predetermined profile. B. a keyway mounted at a position accessible to key holders to receive said passkey, said keyway having an array of discrete electrical contacts therein which are selectively interconnected by the corresponding lateral extensions of a passkey inserted therein in accordance with the profile thereof, C. a logic circuit connected to said array of contacts to establish an electrical test pattern whose nature depends on which contacts in said array are interconnected by the inserted passkey, said logic circuit including a nonremovable switching panel having a set of electrical switches operable in conjunction with an insertable coded reference key having a profile defined by edge notches creating lateral extensions adapted to actuate switches in said set in registration therewith to produce an electrical reference pattern in accordance with the key code, and means to compare the test and reference patterns to produce a control signal only when the patterns match each other, said coded reference key having a profile which effectively conforms to the profile of the passkey producing test pattern matching the reference pattern pattern, and D. means responsive to said control signal to produce an output signal and to apply said output signal to said solenoid to activate same whereby said solenoid may be activated only by one in possession of a passkey producing a match with the operative reference key.