Hoist for elevator
US7850144B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2003 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | May 15, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/1025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An elevator hoist apparatus includes a stationary frame member, a main shaft, a stationary element disposed to said stationary frame member, a rotary frame member supported on said main shaft and extending in a radial direction in axial opposition to said stationary frame member, a rotary element disposed to said rotary frame member in opposition to said stationary member, a brake unit including a brake portion extending through an opening in said stationary frame member, and a rope sheave disposed to said rotary frame member for rotation therewith. The brake unit includes a brake portion disposed in a hollow portion of the stationary frame member of the stationary member and extending through the opening portion and disposed to the inner circumference of the stationary frame member or the rotary frame member. The magnetic path for the brake unit extends through one portion of the rotary frame member or the stationary frame member. Small-size and high performance are realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.