Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent
1979-08-13
1982-02-09
Pitts, Harold I.
Registers
Systems controlled by data bearing records
Credit or identification card systems
340543, 34082531, 235449, 235454, H04Q 900
Patent
active
043152473
ABSTRACT:
A security system employs a combination memory and processor which upon insertion of a key, is operative in a first mode to store a predetermined digital code associated with the key in a memory associated with the processor. During this first mode, any digital code manifested by any one of a plurality of keys is automatically stored in the memory by the insertion and withdrawal of the selected key. Thereafter, the processor serves to recognize only the selected key to enable activation of a controlled mechanism in a second mode again manifested by the insertion of the selected key within the access slot. The combination processor can be paralleled to enable one to control a single entranceway by means of a plurality of keys each associated with one processor or to employ different keys at one location to initiate other functions as activation of burglar alarms and so on. The system has applicability as a security system and has utility in many commercial and residential applications.
REFERENCES:
patent: 3906447 (1975-09-01), Crafton
patent: 3958231 (1976-05-01), Hoffman
patent: 4048475 (1977-09-01), Yoshida
patent: 4048618 (1977-09-01), Hendry
patent: 4095739 (1978-06-01), Fox
patent: 4218674 (1980-08-01), Brosow
Pitts Harold I.
Plevy Arthur L.
LandOfFree
Security systems employing an electronic lock and key apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Security systems employing an electronic lock and key apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security systems employing an electronic lock and key apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1262850