Key fob and system for indicating the lock status of a door...

Details Key fob and system for indicating the lock status of a door... Key fob and system for indicating the lock status of a door...

2011-03-01

2011-03-01

Zimmerman, Brian A (Department: 2612)

Communications: electrical

Selective

Monitoring in addition to control

C340S005610

Reexamination Certificate

active

07898382

ABSTRACT:
The present invention provides a system that records, at a remote location, the current status of a door lock. This invention provides a key fob device, which records the current status of a door look. The key fob indicates to the user the current lock status of the given door(s) in question. The key fob is a small key chain attached device, which records the state of the door locks, or other devices or appliances, as one departs from the door. The system of the present invention comprises a sensor at the door that detects the current lock status of a door and transmits this lock to the key fob. Also incorporated into the key fob is circuitry that receives and records this received lock status. A display component in the key fob displays this current lock status when prompted by the user.

REFERENCES:
patent: 5568120 (1996-10-01), LeMense et al.
patent: 5790065 (1998-08-01), Yaroch
patent: 5796827 (1998-08-01), Coppersmith et al.
patent: 6097282 (2000-08-01), Wang
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patent: 6429773 (2002-08-01), Schuyler
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patent: 6963280 (2005-11-01), Eskildsen
patent: 7142089 (2006-11-01), Yamagishi
patent: 2005/0134477 (2005-06-01), Ghabra et al.

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