Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-05-29
1999-12-07
Mullen, Thomas
Communications: electrical
Condition responsive indicating system
Specific condition
70DIG49, 70278, 235382, 340543, 34082531, 361172, 37910206, E05B 4506
Patent
active
059990953
ABSTRACT:
An access control unit for an electrified door lock also toggles the state of an associated alarm. The unit is arranged to unlock the door only temporarily, but the alarm state is not toggled except by user request. The system is arranged to prevent the anomalous situation of an unlocked door and an armed alarm. Another aspect is the use of standardized key-receiving nests in disparate types of access control devices. Some disparate devices employ identical key-receiving nests, while others use different forms of nests. Yet all mate with and respond to a single type of key.
REFERENCES:
patent: 3812403 (1974-05-01), Gartner
patent: 3828340 (1974-08-01), Bauer, Jr. et al.
patent: 4250533 (1981-02-01), Nelson
patent: 4327353 (1982-04-01), Beard et al.
patent: 4635035 (1987-01-01), Ratzabi
patent: 4677284 (1987-06-01), Genest
patent: 4755799 (1988-07-01), Romano
patent: 4851652 (1989-07-01), Imran
patent: 4864115 (1989-09-01), Imran et al.
patent: 4926160 (1990-05-01), Hwang
patent: 4967305 (1990-10-01), Murrer et al.
patent: 5245652 (1993-09-01), Larson et al.
patent: 5280518 (1994-01-01), Danler et al.
patent: 5550529 (1996-08-01), Burge
patent: 5701828 (1997-12-01), Benore et al.
patent: 5758522 (1998-06-01), York
patent: 5801625 (1998-09-01), Wang
Earl Mark J.
Larson Wayne F.
Toll Michael C.
Valenzuela Antonio P.
Mullen Thomas
SLC Technologies Inc.
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