Coated rope or belt for elevator systems
US9731938B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2011 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Oct 7, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Elevator coated ropes or belts are disclosed. The coated rope or belt may include at least one cord and a jacket retaining the at least one cord. The cord may include a plurality of filaments. The filaments are free of second-order helical structure. In a first embodiment, the filaments includes at least one inner filament and a plurality of outer filaments surrounding the at least one inner filament. The outer filaments are bunched together by forming a first-order helical structure through the length of the cord. In a second general embodiment, the filaments are free of both first- and second-order helical structures. The filaments are bunched together by a restraining loop or adhesive at one or more locations along the length of the cord. Methods of making the tension cord are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.