Title:
PYROTECHNIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2023/102589
Kind Code:
A1
Abstract:
The pyrotechnic actuator (1) comprises a tubular housing (2), which has a pyrotechnic igniter (21) at one end, and also comprises a piston with a flared end (4a) and a piston rod (4). The flared end (4a) of the piston can be displaced in the housing (2), by the igniter (21), from a starting position, adjacent to the igniter (21), into an end position, remote from the igniter (21). At that end of the housing (2) which is directed away from the igniter (21), a single-piece sealing element (5) is provided between the piston rod (4) and the housing (2). The piston rod (4) passes through the sealing element (5). The piston rod has a step (14) in the region of the sealing element (5), wherein the external diameter (13) of the piston rod (4) is smaller on that side of the step (14) which is directed away from the igniter (21) than the external diameter (12) on that side of the step (14) which is directed towards the igniter (21). According to the invention, the sealing element (5) has a corresponding mating step (27), and so the sealing element (5) is seated on the step (14) of the piston rod (4). Axial prestressing thus makes it possible to achieve sealing between the housing (2) and the piston rod (4). The sealing element (5) is preferably ruptured when the actuator is triggered.
More Like This:
| WO2005060454 | ASSEMBLIES INCLUDING EXTENDABLE, REACTIVE CHARGE-CONTAINING ACTUATOR DEVICES |
| WO/2012/144940 | HOOD LIFTING ARRANGEMENT AND METHOD FOR PRODUCING AN ACTUATOR |
| JP2015124829 | ACTUATOR |
Inventors:
AIGNER KURT (AT)
KLETZMAYR DANIEL (AT)
MARKER MARKUS (AT)
SCHEIBER ALEXANDER (AT)
ILINCIC SLADAN (AT)
KLETZMAYR DANIEL (AT)
MARKER MARKUS (AT)
SCHEIBER ALEXANDER (AT)
ILINCIC SLADAN (AT)
Application Number:
PCT/AT2022/060432
Publication Date:
June 15, 2023
Filing Date:
December 07, 2022
Export Citation:
Assignee:
ASTOTEC AUTOMOTIVE GMBH (AT)
International Classes:
F15B15/19; B60R21/38; B60R22/195; F15B15/14
Domestic Patent References:
| WO2011138553A1 | 2011-11-10 | |||
| WO2015072293A1 | 2015-05-21 | |||
| WO2012144939A1 | 2012-10-26 | |||
| WO2011138553A1 | 2011-11-10 |
Foreign References:
| US20150175496A1 | 2015-06-25 | |||
| GB2375329A | 2002-11-13 | |||
| DE102008039168A1 | 2010-02-25 | |||
| US20180038393A1 | 2018-02-08 | |||
| EP2546531A2 | 2013-01-16 | |||
| US20150175496A1 | 2015-06-25 | |||
| AT511500B1 | 2013-02-15 | |||
| EP2699455A1 | 2014-02-26 |
Attorney, Agent or Firm:
MÜLLNER, Martin et al. (AT)
Download PDF: