Self-locking belt roller having two retraction force limiting elements
US6592064B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jun 29, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2022/287
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A self-locking belt roller is provided and includes a belt winding shaft rotatably mountable in a housing, a profiled head, and a torsion rod which becomes operational to resist further extraction of a belt from the belt roller so as to effect thereby a first force limiting operation of the belt roller. The belt roller also includes a resistance facilitating element on the belt winding shaft or the profiled head and a deformation element for increasing the resistance force of the belt roller to further extraction of the belt either at the time before the actuation of the torsion rod to resist further belt unwinding or at the time during which the torsion rod resists further belt extraction. The deformation element is engaged by the resistance facilitating element during further rotation of the belt roller in a manner to increase the resistance of the belt roller to further extraction of the belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.