Importance

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Abstract

The elevator has, when the elevator car is in its lowermost access level, no elevator shaft pit or one with absolute minimal depth but complies with regulations with respect to protective spaces against the risk of being crushed. The elevator car is movable in an elevator shaft with shaft doors to several access levels. Maintenance operations can be carried out both on the elevator car or from the interior of the elevator car. Access to the region below the elevator car is possible in that at least the lowermost shaft door is permanently locked, whilst all upper shaft doors can have emergency unlocking means. The at least lowermost shaft door is thus permanently locked, with the exception of the state in which the elevator car is in a stopped state, or is stopped, opposite it. The required permanent protective space consists of the entire interior of the elevator car.

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First Claim