US4045830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of protection by modeling
Assignee: Societe Nationale des Poudres et Explosifs
•
Filing: 1975-03-24
•
Granted: 1977-09-06
•
Expires: 1995-03-24
Abstract
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.
Inventors
- 👤 Jean Loeb
- 👤 Bernard E. Plantif
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:44
CPC Classifications
A; A61; A61G; A61G1/00; A61G7/00; A61G7/05; A61G7/057; A61G7/05738; A61G7/05753; Y; Y10; Y10S; Y10S5/00; Y10S5/911; Y10S5/913
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
150 words
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.
Claim 2
Independent Claim
150 words
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.
Claim 3
Dependent Claim
82 words
The system according to claim 1 which comprises a plurality of elastic and leakproof envelopes joined together by tubes permitting the inflow and evacuation of the fluid contained in said envelopes, said tubes being sufficiently rigid so that they do not flatten under vacuum and of a diameter slightly greater than that of the resilient and deformable bodies, the envelopes forming a back, a seat and four sides, of which sides tow are at the back and two are at the seat.
Claim 4
Dependent Claim
52 words
The system according to claim 2 wherein said back is divided into two chambers, the lower of which supports the lower organs of a human being, and the upper chamber supporting the shoulders, the coefficient of filling of the lower chamber with resilient bodies being greater than that of the upper chamber.
Claim 5
Dependent Claim
35 words
The system according to claim 3 wherein the density of the resilient and deformable bodies contained in the lower chamber is greater than that of the resilient and deformable bodies contained in the upper chamber.
Claim 6
Independent Claim
139 words
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.
Claim 7
Independent Claim
139 words
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.
Claim 8
Dependent Claim
41 words
The system according to claim 5, wherein said means are constituted by the envelope itself, the two skins being made of the same material, the skin in contact with the body to be protected being less thick than the other skin.
Claim 9
Dependent Claim
39 words
The system according to claim 5, wherein said means consist of at least one spring and the system comprises a casing, said spring being located between the lower skin and said casing, the spring being secured to said casing.
Claim 10
Dependent Claim
40 words
The system according to claim 5, wherein said means consist of an element made of a substance of properties similar to a spring, and the system comprises a casing, said element being located between the lower skin and said casing.
Claim 11
Dependent Claim
22 words
The system according to claim 8 additionally comprising at least one spring which is located between the lower skin and said casing.
Claim 12
Dependent Claim
37 words
The system according to claim 5, wherein each said envelope is the first envelope and said means consist of a leakproof, auxiliary envelope, placed inside each said first envelope, the pressure inside the auxiliary envelope being adjustable.
Claim 13
Dependent Claim
19 words
The system according to claim 1, wherein the powder block of the gas generator presents a constant combustion surface.
Claim 14
Dependent Claim
52 words
The system according to claim 1, wherein the powder block presents, on a front surface, a coating made of an ignition composition said gas generator comprising a firing pin and a primer, and the coating being ignited by the flame of said primer situated in the lower part of said firing pin.
Claim 15
Dependent Claim
31 words
The system according to claim 1, wherein the powder block is made of a composition presenting a potential of less than 600 cal/g and a combustion pressure lower than 100 bars.
References Cited (Backward Citations)
US1237688A
Cited
US2150287A
Cited
US2779034A
Cited
US3008214A
Cited
US2901182A
Cited
US3009828A
Cited
SE324869B
Cited
US3616471A
Cited
US3608961A
Cited
US3786130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |