Safety belt retractor with a vehicle-sensitive and webbing-sensitive blocking mechanism
US5169085A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Aug 27, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R22/41
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To avoid an undesirable locking of the belt spool on sudden taking up of a relatively great length of webbing on the belt spool, a means is provided which from a predetermined value of the external diameter of the webbing coil on the belt spool onwards prevents activation of the vehicle and webbing-sensitive blocking mechanism. This is achieved by means of a synchronization gear which is coupled non-rotatably to the belt spool and from a predetermined value of the external diameter of the webbing coil onwards comes into engagement with a coupling gear which simultaneously comes into engagement with an external toothing of a control disk, so that any relative movement between the control disk and the belt spool is prevented, thereby disabling activation of the blocking mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.