Piston catcher for a pyrotechnic linear piston and cylinder drive
US5495790A · kind A · utility
14Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1995 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Jan 18, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20462
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a pyrotechnic linear piston and cylinder drive in a belt pretensioner, the cylinder (10) has a frustoconical free end (12) and the piston (14) is attached to the end of a cable (16). The piston (14) is tapered frustoconically at its end adjacent to the free end (12) of the cylinder (10). An annular piston member (22) is slipped over and frictionally engaged with the tapered end portion (20) of the piston (14). When the annular piston member (22) reaches the frustoconical free end (12) of the cylinder (10), the piston (14) is forced further into the annular piston member, deforming both parts and dissipating energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.