IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0342846
(1994-11-21)
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발명자
/ 주소 |
- Gokcebay Asil T. (San Francisco CA) Keskin Yucel K. (Santa Clara CA)
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| 출원인 / 주소 |
- Security People, Inc. (San Francisco CA 02)
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| 인용정보 |
피인용 횟수 :
89 인용 특허 :
0 |
초록
▼
A mechanical lock and key, which may have a conventional cylinder with mechanical bittings, includes an electronic access control feature for preventing opening of the lock, even with the proper mechanical key, unless prescribed conditions are met. The lock cylinder, preferably in the cylinder plug,
A mechanical lock and key, which may have a conventional cylinder with mechanical bittings, includes an electronic access control feature for preventing opening of the lock, even with the proper mechanical key, unless prescribed conditions are met. The lock cylinder, preferably in the cylinder plug, is fitted with a small ID or “serial number”chip which is read when a voltage is applied. A connected device, also very small, is an addressable switch. The switch is connected to a solenoid capable of withdrawing a blocking pin, when the switch is activated and conveys voltage to the solenoid. The mechanical key has a key head with a battery, microprocessor and database. When the key is inserted into the lock, a one-wire bus connection conveys the lock ID to the microprocessor in the key, a comparison is made by the microprocessor to determine whether the lock is authorized to be opened, and if so, a code for the addressable switch, determined from the key database, is sent via the one wire bus to the switch, which causes the switch to conduct power to the solenoid, withdrawing the blocking pin and enabling opening of the lock. A record is made in the database as to each instance of opening of each lock which the key fits.
대표청구항
▼
A lock and key with a mechanical lock configuration as well as an electronic security feature comprising: a lock including a metal lock cylinder for releasing the lock, the lock cylinder comprising (a) a cylinder shell, (b) a cylinder plug rotatable within the cylinder shell and having a keyway, (c)
A lock and key with a mechanical lock configuration as well as an electronic security feature comprising: a lock including a metal lock cylinder for releasing the lock, the lock cylinder comprising (a) a cylinder shell, (b) a cylinder plug rotatable within the cylinder shell and having a keyway, (c) a series of mechanical locking elements acting between the cylinder plug and the cylinder shell, and having a specific mechanical bitting pattern, (d) a blocking pin independent of the mechanical locking elements positioned in a bore of the cylinder plug for in and out reciprocal movement in the bore and being contained essentially within the bore of the cylinder plug in a retracted condition and extending partially outwardly from the bore of the cylinder plug in a blocking condition, (e) a recess in the interior of the cylinder shell, positioned such that the blocking pin will engage in the recess in said blocking condition to prevent rotation of the cylinder plug, (f) electromagnetic release means in the cylinder plug for retracting the blocking pin to the retracted condition upon communication of electrical power to the electromagnetic release means, and means for normally holding the blocking pin in the blocking condition, when electrical power is not communicated to the electromagnetic (g) electrical conductive path means, including an external contact isolated from the metal of the lock cylinder, for communicating electric power from the exterior of the lock cylinder to the electromagnetic release means with the body of the cylinder acting as a ground, and (h) electronic means positioned in the conductive path means, for restricting communication of electric power to the electromagnetic release means and for conducting such power to the electromagnetic release means only when a prescribed data signal is received by the electronic means, mechanical key means fitted for insertion into the lock cylinder, comprising (a) a key blade with mechanical bitting matched to said mechanical bitting pattern of the lock cylinder, (b) a battery of sufficient capacity to power said electromagnetic release means to retract the blocking pin, (c) microprocessor means powered by the battery and data storage means connected to the microprocessor means, and (d) contact means for engaging with said external contact of the lock cylinder to thereby connect with the conductive path means including the electronic means in the lock cylinder in a one-wire bus connection, said electronic means including ID means storing an identification code for the lock, and addressable switch means connected to the electromagnetic release means and to the ID means, for switching on power from the mechanical key means to the electromagnetic release means only when said prescribed data signal is received, and said microprocessor means including means for reading the code of the ID means when the mechanical key means is inserted into the lock and said one-wire bus connection is made, and for looking up in the data storage means the lock ID code read from the lock to determine whether the lock is a lock authorized to be opened, and if so, for looking up a switch code associated in the data storage means with the lock ID code and sending the switch code as said prescribed data signal into the conductive path means, so that the switch code is sent to the addressable switch means and is thereby effective to cause the addressable switch means to switch power to the electromagnetic release means to retract the blocking pin permitting the cylinder plug to be rotated to open the lock.
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