FR2274015A1 - Pyrotechnic gas generator - with solid refrigerant surrounding pyrotechnic charge - Google Patents

Pyrotechnic gas generator - with solid refrigerant surrounding pyrotechnic charge

Info

Publication number
FR2274015A1
FR2274015A1 FR7314239A FR7314239A FR2274015A1 FR 2274015 A1 FR2274015 A1 FR 2274015A1 FR 7314239 A FR7314239 A FR 7314239A FR 7314239 A FR7314239 A FR 7314239A FR 2274015 A1 FR2274015 A1 FR 2274015A1
Authority
FR
France
Prior art keywords
solid refrigerant
gas generator
maintained
pyrotechnic
propellant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7314239A
Other languages
French (fr)
Other versions
FR2274015B1 (en
Inventor
Bernard Plaintif
Michel Pasquier
Yves Abalain
Jean-Francois Tillac
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe Nationale des Poudres et Explosifs
Original Assignee
Societe Nationale des Poudres et Explosifs
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe Nationale des Poudres et Explosifs filed Critical Societe Nationale des Poudres et Explosifs
Priority to FR7314239A priority Critical patent/FR2274015A1/en
Publication of FR2274015A1 publication Critical patent/FR2274015A1/en
Application granted granted Critical
Publication of FR2274015B1 publication Critical patent/FR2274015B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
    • B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J7/00—Apparatus for generating gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure

Abstract

In a pyrotechnic gas generator with a solid refrigerant, of reduced weight and bulk, capable of producing a large quantity of gas under pressure at a relatively moderate temp and in a very short time by combustion of a propellant and by cooling the combustion gases fromed by a solid refrigerant capable of absorbing a large part of the heat in the gases by decompsn. or by sublimation, and in which the generator consists of (i) a central cylindrically shaped combustion chamber contg. a propellant with an igniter device, and (ii) a cooling chamber outside and surrounding the combustion chamber and contg. at least one charge of solid refrigerant, the improvement whereby (iii) the downstreamed of the combustion chamber is maintained in communication with the upstream part of the cooling chamber by peripheral injection nozzles, a homogenising space also being provided between the downstream face of the propellant charge and the inlet to the nozzles, while the outlet end of the cooling chamber is maintained in communication with the outside by peripheral discharge nozzles or slits. Provides a compact gas generator e.g. for rapid inflation of safety equipment, in which the whole of the external wall is maintained at a more or less uniform temp.
FR7314239A 1973-04-18 1973-04-18 Pyrotechnic gas generator - with solid refrigerant surrounding pyrotechnic charge Granted FR2274015A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7314239A FR2274015A1 (en) 1973-04-18 1973-04-18 Pyrotechnic gas generator - with solid refrigerant surrounding pyrotechnic charge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7314239A FR2274015A1 (en) 1973-04-18 1973-04-18 Pyrotechnic gas generator - with solid refrigerant surrounding pyrotechnic charge

Publications (2)

Publication Number Publication Date
FR2274015A1 true FR2274015A1 (en) 1976-01-02
FR2274015B1 FR2274015B1 (en) 1977-09-02

Family

ID=9118218

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7314239A Granted FR2274015A1 (en) 1973-04-18 1973-04-18 Pyrotechnic gas generator - with solid refrigerant surrounding pyrotechnic charge

Country Status (1)

Country Link
FR (1) FR2274015A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2346632A1 (en) * 1976-03-29 1977-10-28 Allied Chem FULLY PYROTECHNICAL INFLATION DEVICE
EP0403857A2 (en) * 1989-06-22 1990-12-27 Dynamit Nobel Aktiengesellschaft Gas generator for an air cushion
FR2678877A1 (en) * 1991-07-10 1993-01-15 Breed Automotive Tech PASSENGER RETENTION SYSTEM BY AIR BAG.
EP0798174A1 (en) * 1996-03-26 1997-10-01 Morton International, Inc. Internal structure for a two-walled inflator
US7516983B2 (en) 2002-02-06 2009-04-14 Nippon Kayaku Kabushiki-Kaisha Gas generator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2346632A1 (en) * 1976-03-29 1977-10-28 Allied Chem FULLY PYROTECHNICAL INFLATION DEVICE
EP0403857A2 (en) * 1989-06-22 1990-12-27 Dynamit Nobel Aktiengesellschaft Gas generator for an air cushion
EP0403857A3 (en) * 1989-06-22 1991-04-17 Dynamit Nobel Aktiengesellschaft Gas generator for an air cushion
FR2678877A1 (en) * 1991-07-10 1993-01-15 Breed Automotive Tech PASSENGER RETENTION SYSTEM BY AIR BAG.
EP0798174A1 (en) * 1996-03-26 1997-10-01 Morton International, Inc. Internal structure for a two-walled inflator
US5829785A (en) * 1996-03-26 1998-11-03 Morton International, Inc. Internal structure for a two-walled inflator
US7516983B2 (en) 2002-02-06 2009-04-14 Nippon Kayaku Kabushiki-Kaisha Gas generator

Also Published As

Publication number Publication date
FR2274015B1 (en) 1977-09-02

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Legal Events

Date Code Title Description
ST Notification of lapse