Otis Elevator Company

Detlev Abraham

Oliver Stoxen

Dietmar Kruger

Hermann W Ahls

Dietrich E Herrmann

Hans-Dietrich Riedel

Hans Erich Engel

Dietmar Krueger

Reinhardt Henkel

A passenger sensor for a conveyor includes a transmitter assembly that is positioned within a channel in the conveyor balustrade. The transmitter assembly includes a plurality of transmitters that are spaced along a cable to form a transmitter chain. Each transmitter includes a module and a connector attached thereto. The transmitter assembly is disposed within the channel without the need for mounting hardware or openings within the balustrade for the passage of the cable. In a particular embodiment, a receiver assembly is disposed in a channel in the opposite balustrade in a similar manner.

Passenger sensor for an escalator or moving walk

A control system for a passenger conveyor includes a plurality of junction boxes distributed throughout the conveyor and a control unit. The control unit communicates with the plurality of junction boxes through a serial link that interconnects the junction boxes and control unit. In a particular embodiment, the control unit is located remotely from the truss of the conveyor.

Passenger conveyor control system having decentralized inputs and outputs

An operation panel for a passenger conveying device having a balustrade is provided comprising a key switch, a key pad, and a processor. The key switch may be actuated into a plurality of switch positions by an independent key and the keypad may be used to input data into the processor. The processor, which processes data from external inputs and the keypad, includes a programmable memory selectively accessible by password. A first level of the processor is accessible without actuating the key switch from a first switch position or entering a password into the keypad. A second level of the processor is accessible by actuating the key switch into a second switch position. A third level of the processor is accessible by actuating the key switch into the second switch position and inputting a password to the processor through the keypad.

Operation panel for a passenger conveying device

An electronic indicator device 24 is disposed on the outer deck profile 20 of a passenger conveying device 10. The indicator device 24 includes a display 52 capable of displaying a symbol indicative of direction of operation and stopped operation of the passenger conveying device 10. The indicator device 24 comprises a post 30 attached at a lower end thereof to the outer deck 20 and having a display housing 42 attached at angle at an upper end of post 30. The electronic display 52 is disposed in the display housing 42. A base 26 is disposed on the outer deck 20 with the post 30 passing through an opening in the base 26. A transparent enclosure 44 having upper and lower openings is disposed over the base 26, the post 30 and the display housing 42, with the display 52 disposed within the upper opening of the enclosure 44. A logic circuit 64 interfaces with the passenger conveying device 10 and the display 52 to determine the symbol indicative of the operational feature of the passenger conveying device 10 to be displayed.

Indicator for a passenger conveying device

A variable-frequency, variable-voltage (VVVF) converter is interposed in the line between an AC source and an asynchronous escalator motor. Current to the motor is sensed to determine load in conjunction with a passenger detector and load simulating electronic system and the frequency and voltage of the converter are automatically adjusted in response thereto to control escalator speed. The system includes a converter to supply the asynchronous drive motor of the escalator with variable frequency and an appropriate control circuit for manual or automatic operation of the escalator at different speeds, which is equivalent to different motor frequencies.

Growing community of inventors

Berlin, Germany

Detlev Abraham