Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reexamination Certificate
2008-05-20
2008-05-20
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Movement, position, or limit-of-travel
C318S445000
Reexamination Certificate
active
11486132
ABSTRACT:
A system and method for unattended control of an access barrier comprises a barrier operator having a timer capable of being updated at predetermined intervals. The barrier operator is configured to receive an auto-close signal that is periodically sent from a wall station, keyless transmitter, or remote transmitter that is compatible with the barrier operator. When the auto-close mode is invoked, the barrier operator initiates the timer when it detects that the access barrier has been opened. As such, the access barrier is closed via the barrier operator when both the timer has expired, and the auto-close signal is received by the barrier operator from one of the transmitters.
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Copy of International Search Report dated Dec. 13, 2007.
Copy of Written Opinion dated Dec. 13, 2007.
Brandt Michael
Donovan Lincoln
Renner Kenner Greive Bobak Taylor & Weber
Wayne-Dalton Corp.
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