Otis Elevator Company

Dave Jarvis

Frank M Sansevero

John M Milton-Benoit

Boris G Traktovenko

Dietmar Thaler

Vijay Jayachandran

John J Ferrisi

Yanying Chen

Harry Terry

Qingdong Richard Jiang

Goldino Alves

Ruoming Tian

Loren D Fanion

Fred R Spielman

Daniel R Greer

Robert Hammell

John J Kriss

Alexander Bellendir

Kevin Gleason

Ken Woronoff

Fred Spielman

An elevator system () includes an underslung car (). A plurality of load bearing members (-) are closer together behind the elevator car and spaced farther apart near a front of the elevator car (). A plurality of sheaves (-) are supported for vertical movement with the car and rotational movement relative to the car () such that the load bearing members (-) can be arranged in a 2:1 roping ratio and extend underneath the car (). A disclosed example includes sheaves (-) rotatable about sheave axes that are at oblique angles relative to corresponding edges of the elevator car ().

Elevator car having an angled underslung roping arrangement

An escalator step () includes a sound barrier material () covering over at least a portion of an inner surface () of a tread portion() and an inner surface () of a rise portion (). In one example, the sound barrier material () comprises a sheet of vinyl. The sound barrier material () reduces noise radiation from the step () toward a cavity () within a passenger conveyor support structure () and reduces noise emanations from the cavity () through the steps (). Several embodiments for securing the sound barrier material () in place are disclosed.

Passenger conveyor step having an acoustic barrier

Comb plate () for a passenger conveyor () with a conveyor band and a moving flange a number of teeth () arranged on it essentially parallel to one another across the width of the conveyor band, which mesh in use with grooves () provided on the upper surface of the conveyor band characterised by a deflector guard () which is arranged at the lateral edge of the comb plate () and extends a certain height above the upper surface of the comb plate ().

Comb plate for passenger conveyor with moving flange

Growing community of inventors

West Hartford, CT, United States of America

Dave Jarvis