Elevator system with counterweight
US9914621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2013 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Nov 22, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B17/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A counterweight assembly for an elevator system includes a counterweight and a guide shoe affixed to the counterweight, the guide shoe extending continuously and unbroken along a vertical length of the counterweight. A counterweight guide system for an elevator system includes a plurality of first counterweight guide brackets secured in a hoistway at a first side of a counterweight and interactive with a first guide shoe affixed to the counterweight. A plurality of second counterweight guide brackets are secured in the hoistway at a second side of the counterweight opposite the first side and interactive with a second guide shoe affixed to the counterweight. Two or more first counterweight guide brackets are engaged with the first guide shoe during travel of the counterweight along the hoistway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.