Otis Elevator Company

Fernando Rico

Richard N Fargo

Pascal Rebillard

Michel Beeuwsaert

David Pillin

Franck J Det

Jean-Noël Cloux

Hugues Fanielle

Raphaël Picard

Davy Depee

Leandre Adifon

Alberto Vecchiotti

Pedro S Baranda

Bruce St Pierre

Jacobus Benjamin Legez

Alfonso Garrido

Armando Servia

Jean Marc Ferrary

Marc Frederic Chevilliard

Frank W Adams

Ron Laliberte

Davy Dupee

An elevator system includes guide rail mounted machine and a sheave assembly that accommodates a guide rail within a hoistway. The inventive sheave assembly includes individual sheave portions rotatable along a common axis. At least two of the sheave portions are spaced apart along the shaft and a portion of the guide rail extends toward the axis beyond a plane formed tangent to the outer diameter of the sheave portions.

Sheave assembly and suspension system for an MRL elevator

An elevator system includes guide rail mounted machine () and a sheave assembly () that accommodates a guide rail () within a hoistway. The inventive sheave assembly includes individual sheave portions () rotatable along a common axis. At least two of the sheave portions are spaced apart along a shaft () and a portion of the guide rail extends toward the axis beyond a plane formed tangent to the outside diameter of the sheave portions.

Sheave assembly for an elevator system

An elevator system () includes a guide rail bracket () attached to a single hoistway wall (). Car guide rails () and counterweight guide rails () are fixed to the bracket (). The counterweight guide rails () are positioned in between the car guide rails () so that the counterweight () can translate therebetween. The elevator car () is supported by rope () and sheave () members coupled to a traction drive ().

Single wall interface traction elevator

An elevator drive has an electric motor 12 which drives a worm 30 that drives a gear 20,28 on a shaft 22, at right angles to the worm 30. The output shaft is in the horizontal plane, and an elevator rope sheave 10 is attached to this shaft 22. The shaft 22 is mounted on two bearings 32,36, at opposite ends of a single piece case 14. The drive is assembled by first inserting the gear 20,28 through the side of the case 14, then inserting the shaft 22 through one end of the case through the gear 20,28 and into the bearing 36. Then a thrust plate 40 is tightened down on the end of the shaft 22 to hold the shaft in place on the bearing's inner race and also thrust the gear 20,28 onto the shaft 22. The worm 30 is then inserted through the top of the case 14. Both shaft support bearings 32,36 are machined on the same axis.

Worm gear elevator drive and assembly method

Growing community of inventors

Rueil Malmaison, France

Fernando Rico