Locks – Operating mechanism – Using a powered device
Patent
1990-02-09
1991-05-07
Wolfe, Robert L.
Locks
Operating mechanism
Using a powered device
70277, E05B 4700
Patent
active
050126598
DESCRIPTION:
BRIEF SUMMARY
FIELD AND BACKGROUND OF THE INVENTION
The present invention relates to an electronic locking device which consists of a lock and key cards, the lock electronics of which has a data storage and which can be coupled with a mobile printer which can be connected to the lock electronics and retrieve data, the locking device having an insert shaft for the key cards in which a card reader is arranged and which is provided at its end with a socket connected to the lock electronics, for a card-shaped coupling element of the printer which can be inserted into the insert shaft and has electrical contacts.
Such a locking device is known from European Patent 132 627. By utilizing the insert shaft both for inserting the key cards and for the coupling element, a particularly clear and simple construction has been created since a separate insert opening for the connection to the mobile printer is unnecessary. Furthermore, as a result hereof, a concealed arrangement of the socket is made possible, which offers a certain protection against unauthorized manipulation. Nevertheless, in the known arrangement it cannot be excluded that unauthorized access to the data storage of the lock takes place in the manner that an unauthorized person inserts a coupling element into the insert shaft of the lock and in this way establishes an electrical connection with the receptacle. Status data can thus be interrogated or printed out by the mobile printer, indicating with what key cards and at what time a locking of the lock took place, whether the key card was merely inserted or whether the lock mechanism was also actuated, and whether there were any malfunctions of the lock. The retrievable information is customarily up-to-date, i.e. an up-to-date data base is maintained which continuously writes over older data. It is readily understood that the retrievable data should be accessible only to authorized persons.
The connection of the printer constitutes a special operating mode of the lock; in normal operation (access control operation) a query for the coding and a comparison with the lock code take place upon insertion of a valid key card into the insert shaft. If the key-card information enquired for corresponds to the values stored in the memory, then a locking pulse is produced which makes the transfer of the lock into release position possible. Such locking devices can thus be used wherever access to certain areas is to be permitted only for authorized persons.
SUMMARY OF THE INVENTION
Based on the above-described problems, a locking device of the type indicated above is disclosed with which the retrieval of data by unauthorized persons is made substantially more difficult.
This object is achieved, in accordance with the invention, in the manner that the coupling element has a keycard code and that a slide which is present in the insert shaft, can be displaced with the coupling element upon insertion thereof and can be fixed in position by tumblers which, upon a valid key-card code, are transferred into the release position and thus permit displacement of the slide into its end position in which the contacts come into engagement with the socket device. It is thus proposed in accordance with the invention that coupling with the socket device can only be effected when the coupling element has a valid key-card code. If a conventional coupling element which is known from the prior art is inserted into the insert shaft of the lock of the invention then a connection with the socket device cannot take place since displacement of the slide is impossible due to the lack of key-card coding, so that the contacts cannot reach the socket device. Thus in accordance with the invention a mechanical blocking of the coupling element is present if the latter is not provided with a valid key-card code. Furthermore, the key-card code can also be a special key-card code which as special code, in contrast to the customary key-card codes, controls the lock electronics in such a manner that it supplies the data desired. If only the "customary" key-card c
REFERENCES:
patent: 3732542 (1973-05-01), Hedin
patent: 4591852 (1984-04-01), Brod
patent: 4727369 (1988-02-01), Rode
patent: 4918957 (1990-04-01), Eisermann
patent: 4932228 (1990-06-01), Eisermann
Farber Martin A.
Schulte-Schlagbaum Aktiengesellschaft
Wolfe Robert L.
LandOfFree
Locking device with key-coded printer connection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Locking device with key-coded printer connection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Locking device with key-coded printer connection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-932008