Elevator – industrial lift truck – or stationary lift for vehicle – With monitoring – signalling – and indicating means – Monitors operational parameter
Reexamination Certificate
2008-04-08
2008-04-08
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
With monitoring, signalling, and indicating means
Monitors operational parameter
C187S314000
Reexamination Certificate
active
07353916
ABSTRACT:
A method and system for supervising the safety of an elevator having a car driven by a drive within a hoistway wherein a travel parameter (XABS,X″Acc,X′IGB) of the car is sensed and continually compared with a similarly sensed travel parameter (X′IG) of the drive. If the comparison shows a large deviation between the two parameters, an emergency stop is initiated. Otherwise one of the travel parameters (XABS,X″AccX′IGB; X′IG) is output as a verified signal (X;X′). The verified signal is then compared with predetermined permitted values. If it lies outside the permitted range then an emergency stop is initiated.
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Inventio AG
Salata Jonathan
Stoffel Klaus P.
Wolff & Samson PC
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