Safety device for a system transported on board a vehicle, in particular an aircraft
AssigneeMessier-Bugatti
InventorBernard Bouchez
Life of this patent
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AssigneeMessier-Bugatti
InventorBernard Bouchez
Estimating the term…
The invention relates to a safety device for a system transported on board a vehicle, in particular an aircraft, said system being connected to the structure of the vehicle via at least one element having a cylindrical body and a telescopic rod. According to the invention, the body and the rod of each element together define two internal fluid chambers which are normally isolated from each other, a communication passage being provided between the two chambers and normally being closed by an associated throttling valve, the throttling valve being controlled by acceleration-sensing means using a mass that is movable in the axial direction of the telescopic element and that is associated with a rated spring. The means is organized to cause the throttling valve to open as soon as the sensed acceleration exceeds a threshold which is predetermined as a function of the system to be protected, the acceleration of the system thus being kept below the threshold by the telescopic element changing in length.
A crash safety telescopic element having a cylindrical body and a telescopic rod which together define two internal fluid chambers, wherein the two chambers are isolated from each other when no critical shock is taking place, a communication passage being provided between said two chambers and being closed in absence of critical shock by an associated throttling valve, said throttling valve being controlled by acceleration-sensing means using a mass that is movable in an axial direction of said element and being associated with at least one rated spring, said acceleration sensing means cooperating with said throttling valve so as to cause the throttling valve to open and the length of said telescopic element to change accordingly as soon as the sensed acceleration exceeds a predetermined threshold.
Dependencies are inferred from the claim text.