System of protection by modeling
AssigneeSociete Nationale des Poudres et Explosifs
InventorsJean Loeb, Bernard E. Plantif
Life of this patent
Estimating the term…
Abstract
A system of protection by modeling and/or immobilization comprises at least one flexible and leakproof envelope, a plurality of resilient and deformable balls therein, and means for establishing a vacuum inside the envelope. Two elastic skins joined in leak-proof fashion by their peripheries constitute the envelope, inside which vacuum is created by a vacuum-generating unit including a gas generator. This system can be used in particular for transporting the wounded, or as a seat, the latter being constituted by one or more envelopes.
Claims13
A system of protection by modeling or immobilization or both which comprises at least one flexible and leakproof envelope, a plurality of resilient and deformable bodies within said envelope, means permitting to create a vacuum inside said envelope, said envelope consisting of two separate, elastic skins, joined together so as to insure the leakproofness of said envelope;
- said means permitting to create a vacuum comprising a gas generator, a pump placed downstream of said generator, the pump having an ejector, said generator communicating with the ejector of said pump, a suction orifice in said envelope in communication with the collector of said pump through a non-return valve, the gas generator being a pyrotechnic generator provided with a powder block, the resilient and deformable bodies being balls of diameter between 0.4 and 6 mm., the powder block having a duration of combustion in the range of 6 seconds to 1 minute.
A system of protection by modeling or immobilization or both which comprises at least one flexible and leakproof envelope, a plurality of resilient and deformable bodies within said envelope, means permitting to create a vacuum inside said envelope, said envelope consisting of two separate, elastic skins, joined together so as to insure the leakproofness of said envelope;
- said means permitting to create a vacuum comprising a gas generator, a pump placed downstream of said generator, the pump having an ejector, said generator communicating with the ejector of said pump, a suction orifice in said envelope in communication with the collector of said pump through a non-return valve, wherein each envelope is equipped with means for breaking up the imbrication of said resilient and deformable bodies when the fluid pressure which prevails outside said envelope is restored inside the envelope.
Dependencies are inferred from the claim text.