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US 4,619,284 AGranted
Pyrotechnic valve
AssigneeSociete Nationale Industrielle Aerospatiale
InventorsJean-Jacques Delarue, Claude Ego
Life of this patent
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Abstract
The pyrotechnic valve according to the invention comprises one or more pyrotechnic devices able to produce gases under a high pressure, which has the effect of suddenly deforming a membrane equipped with a rigid weight. The latter projects a punch, which shears a tight end fitting, thus freeing the fluid passage. The membrane ensures a perfect seal between the fluid circulation zone and the zone containing the gases produced by the pyrotechnic devices.
Claims7
A pyrotechnic valve comprising:
- a valve body having an inner cavity;
- a deformable disk-shaped membrane;
- a rigid weight mounted on said deformable membrane, said rigid weight and said deformable membrane together tightly subdividing said inner cavity into a first part and a second part;
- a fluid inlet and a fluid outlet communicating with said second part of said inner cavity;
- a valve member disposed in said second part of said inner cavity for interrupting passage of fluid therethrough;
- a pyrotechnic device for producing gases in said first part of said inner cavity, said weight being displaceable under the action of the gases produced by said pyrotechnic device so as to move said valve member;
- said membrane being plastically deformable under the action of the gases produced by said pyrotechnic device and said inner cavity being provided with a seat to which the entire membrane is applied once it has been deformed.
4 more elements
Dependencies are inferred from the claim text.