Integrated elevator drive machine and brake assembly
US5669469A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1995 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Apr 3, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49989
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An elevator machine having an outer wall, a rotatable output shaft with a sheave mounted thereon and a brake assembly for braking the output shaft and sheave. The brake assembly has a base integrally formed with the outer wall adjacent the output shaft. A metal base of the brake assembly is cast or embedded within the outer wall. Alternately, the outer wall forms the base of the brake assembly, The integrally formed base has a groove for housing a magnetic coil of a disc brake assembly. The base also has a plurality of bores for housing the brake springs and a plurality of bores for bolting the disc subassembly to the base. The disk brake assembly is fabricated by casting or imbedding a metallic blank of higher magnetic permeability into the casting of the outer wall to form the base thereof. A bearing assembly counterbore is machined into the outer wall and, without unsecuring the wall segment from the machining operation, the base of the disc brake assembly is machined to form the groove for housing a magnetic coil, a plurality of bores to house the brake springs and a plurality of bolt bores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.