Lock-off descent control systems and devices
US12186596B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2020 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Aug 10, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2121/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic descent control device includes a line configured to be attached to a load. A line system retracts slack from the line when the line is not loaded and extends the line when the line is loaded. At least one braking system provides a braking force when the line is loaded so as to control extension of the line and a descent rate of the load. The at least one braking system is operable in at least two configurations, a first configuration that the at least one braking system lowers the load at a first descent rate, and a second configuration that the at least one braking system lowers or locks the load at a second descent rate. The load being a constant and the first descent rate is greater than the second descent rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.