US 2008/0164103 A1 · Elevator Car Having An Angled Underslung Roping Arrangement

Abstract

An elevator system (20) includes an underslung car (22). A plurality of load bearing members (32-38) are closer together behind the elevator car and spaced farther apart near a front of the elevator car (22). A plurality of sheaves (40-44) are supported for vertical movement with the car and rotational movement relative to the car (22) such that the load bearing members (32-38) can be arranged in a 2:1 roping ratio and extend underneath the car (22). A disclosed example includes sheaves (40-44) rotatable about sheave axes that are at oblique angles relative to corresponding edges of the elevator car (22).

Claims19

Dependent claims

An elevator car assembly, comprising:

an elevator car;
a plurality of sheaves that are supported for rotational movement relative to the car and for vertical movement with the car, at least a first one and a second one of the sheaves positioned near one edge of the car, at least a third one and a fourth one of the sheaves positioned near an oppositely facing edge of the car, the first sheave being laterally spaced a first distance from the second sheave and the third sheave being laterally spaced a second, greater distance from the fourth sheave.

Dependencies are inferred from the claim text.

Elevator Car Having An Angled Underslung Roping Arrangement

Life of this patent

Elevator Car Having An Angled Underslung Roping Arrangement

Life of this patent

Abstract

Claims19