Access controlled system with acoustic mechanical verification transmitter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 1, 2004
Grant Date -
N/A
app pub date -
Dec 4, 2001
filing date -
Jun 4, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An access-controlled system includes a portable identification device and a control unit with which the encoded information on the identification device can be read. The control unit allows a user access to the system once the identity of the identification medium has been established. The portable identification device includes a signal generator device configured for generating a reproducible acoustic signal in a mechanical manner. The reproducible acoustic signal includes a clacking noise, a frequency spectrum of the clacking noise encoding information. The signal generator device includes a tongue, plate, and/or curved surface that folds upon an overcoming of an initial resistance, the folding generating the clacking noise. The tongue, plate, and/or curved surface springs back to an original position subsequent to being acted upon.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully