Radio type locking/unlocking device
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United States of America Patent
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-
Feb 26, 2008
Grant Date -
Jul 22, 2004
app pub date -
Oct 9, 2003
filing date -
Oct 9, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention provides an automatic locking/unlocking device which locks an opening/closing body when a normal response signal is received in response to a request signal sent to a predetermined zone around a vehicle body, comprising detector for detecting that the opening/closing body is closed, wherein the request signal is sent within the vehicle compartment in response to closing of the opening/closing body before the request signal is sent to the predetermined zone around the vehicle body and if the normal response signal is received in response to this request signal, transmission of the request signal to the predetermined zone around the vehicle body is prohibited, thereby suppressing consumption of power in the portable unit and ensuring a secure automatic locking.
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