Safety brake assembly
US6820725B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | May 14, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/66
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A safety brake assembly is disclosed comprising a housing movable on a vertical support, the housing attached to a carpet support arm, a pulley rotatably mounted on a shaft of the housing, a link having an inner end pivotally connected to the shaft and an outer end connected to a first end of a pivot bracket on the housing, a second end of the pivot bracket connected to a wedge-shaped member adjacent the pulley, and tensioning means connected intermediate the ends of the pivot bracket. In the event of cable failure, the upward pressure previously exerted on the pulley is released, causing a downward movement of the pulley and link, the movement transferred by means of the pivot bracket to cause upward movement of the wedge-shaped member which is forced up between the pulley and the vertical support, the resultant friction arresting further downward movement of the housing and carpet support arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.