Elevator – industrial lift truck – or stationary lift for vehicle – With monitoring – signalling – and indicating means
Reexamination Certificate
2003-10-31
2009-10-13
Benson, Walter (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
With monitoring, signalling, and indicating means
C187S283000, C187S394000
Reexamination Certificate
active
07600613
ABSTRACT:
An apparatus and method for measuring a position of a moveable platform comprising a plurality of RFID tags encoded with location information situated at known locations and a plurality of visual markers situated at precise, known locations. An RF reader attached to a moveable platform reads the RFID tags to determine the approximate location of the platform. A camera apparatus attached to the moveable platform scans the visual marker. The scanned image is processed to provide the precise position information of the platform.
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Finn Alan M.
Hootsmans Norbert A. M.
Kang Pengju
Oh Jae-Hyuk
Peng Pei-Yuan
Bachman & LaPointe P.C.
Benson Walter
Colon-Santana Eduardo
Otis Elevator Company
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