Elevator – industrial lift truck – or stationary lift for vehicle – With monitoring – signalling – and indicating means
Reexamination Certificate
2007-09-04
2007-09-04
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
With monitoring, signalling, and indicating means
C187S247000
Reexamination Certificate
active
10523119
ABSTRACT:
An elevator safety chain includes a plurality of passive radio frequency identification devices (RFIDs) (15-18, 22, 34-36and63), which are associated, respectively, with hoistway door locks, upper hoistway limits, lower hoistway limits, overspeed detection, car door lock, emergency stop switch, and inspection switch. RFlDs may be associated with car the call buttons (34) and/or hall call buttons (14, 19). The RFIDs may have a switch (43, 44) in the frequency-determining circuitry (40, 41) which defeats the RFID's ability to respond, or a switch (48) which alters the responding frequency. The RFIDs may sense safe or unsafe conditions, or call requests, by either the presence of absence, or vice versa, of adjacent magnetic reluctance (51, 62, 71).
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Bacellar Adriana
Bacellar Luiz
Haas Deborah
Netter Christian
Stucky Paul
Otis Elevator Company
Salata Jonathan
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