Compensation weights and elevator systems
US6837340B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2001 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Feb 28, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B7/068
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention provides a compensation weight for an elevator system, in the form of an extended cable. The compensation weight comprises at least one carrying organ, at least one weighted element, wherein the weighted element contains a mixture of plastic material and at least one of a pulverized metal salt and a pulverized metal chalcogenide with a density about or greater than 2.3 g/cm3, and an extended, flexible sheath. According to another aspect, the invention provides a compensation weight for an elevator system, in the form of a flat cable. It comprises one or more weighted elements, one or more lengthily extended carrying organ, a flexible sheath, and a plurality of hollow spaces encased by said sheath for the reception of the one or more weighted elements and the one or more lengthily extended carrying organ. The at least one carrying organ and at least one weighted element are designed to be separately and respectively in different hollow spaces encased by the sheath. According to still further aspects, the invention is also directed to elevator systems with corresponding compensation weights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.