WO1992000121A1 - Personal heat shield - Google Patents
Personal heat shield Download PDFInfo
- Publication number
- WO1992000121A1 WO1992000121A1 PCT/FR1991/000521 FR9100521W WO9200121A1 WO 1992000121 A1 WO1992000121 A1 WO 1992000121A1 FR 9100521 W FR9100521 W FR 9100521W WO 9200121 A1 WO9200121 A1 WO 9200121A1
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- WO
- WIPO (PCT)
- Prior art keywords
- shield
- shield according
- walls
- wall
- frame
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B29/00—Devices, e.g. installations, for rendering harmless or for keeping off harmful chemical agents
Definitions
- the subject of the present invention is an individual heat shield intended in particular, but not exclusively, for the protection of persons fighting against forest fires.
- the present invention is therefore based on the idea that it is desirable to make available to firefighters, or any person who may be caught in a fire propagating at high speed, a shelter which can withstand a certain time, for example a few minutes , flames and a sudden rise in temperature. This protection must be able to be installed instantly and automatically to avoid understandable panic and to be able to withstand the sudden rise in temperature.
- the present invention relates to a device for achieving these objectives.
- the individual heat shield is characterized in that it comprises an inflatable structure integral with the carrier, automatically unfoldable, and with a double wall, the external wall being made of a fire-resistant material, a gaseous layer introduced between the two walls. constituting an insulating screen.
- the shield is of substantially hemispherical shape.
- This shape allows part of the incident heat radiation to be reflected in good conditions, without heat accumulation in the corners. Furthermore, it makes it possible to limit the height above the ground of the person-shield assembly. Furthermore, during the development of a fire, the ground remains, due to its thermal inertia at room temperature for a certain time and can thus constitute a reserve of cold.
- an inflatable frame is disposed between the two walls.
- a flexible tube 12 is provided which has the purpose, by matching the irregularities of the ground, of ensuring a certain seal so that the air heated by the flames does not come to burn the lungs of the person. finding it under the shield.
- the shield 1 there are provided, inside the shield 1, handles 8 allowing the shield to be applied against the ground.
- the internal air volume in the shield is sufficient to ensure breathing for a few minutes. It is however possible to provide respiratory assistance.
- the person below the shield takes a folded position, the head, preferably protected by a helmet resting on the ground. It carries a belt 6 such as that which is shown in FIG. 3. On the belt 6 is fixed a bag 7 inside which the shield is folded 1. Also on the belt is fixed a reservoir or bomb 4 of compressed gas , connected to the bag 7, in order to inflate the shield 1.
- the opening of the reservoir 4 can be brought about by pulling on a handle 2 or by any other means, provided that it is rapid, which is an essential condition for effective protection.
- the shield can thus be worn permanently during operations, in the folded state, it is compact and does not hinder the necessary changes. It can also be included in a backpack as a parachute.
- the gas bomb can also be included inside the device.
- FIG. 1 a vertical sectional view of a shield according to the invention, a person being in the protective position;
- Figure 1 shows, in vertical section a heat shield according to the invention inside which is protected a person in the fetal position. It is indeed important that this person is closest to the ground in order to avoid the effects of blowing and to benefit from the temperature of the ground.
- the shield generally designated by the reference 1 comprises an envelope 5 with an outer double wall 5a, and an interior 5b. Between the walls 5a and 5b is a layer of gas 3, and, for example air or any other gas which has served to inflate the envelope. This air is slightly overpressure to ensure a relative rigidity of the envelope. After deployment of the shield, the gas included in the envelope acts as an insulator in the heat transmission.
- valves or calibrated non-return valves are advantageously provided which empty the envelope as the volume of the gas increases due to the increase in temperature.
- the envelopes 5a and 5b are advantageously produced by sewing or welding 15 of elements of spherical sectors 13 as shown in FIG. 2.
- the walls can be held together by strips of fabric 16 to
- the compressed air or gas which is advantageously an inert gas such as nitrogen, ensures on the one hand the deployment of the shield and, on the other hand the insulation between the two envelopes, the radiation phenomenon being, over a short period predominant compared to the heat transmission.
- FIG. 4 Another solution is shown in Figure 4.
- This embodiment differs from the first mainly in that the deployment of the shield is obtained by the presence of an inflatable frame 10 which is in the form of an octopus. This frame is trapped between the walls 5a and 5b.
- This connection can, for example, be obtained by sewing or gluing, but the seam provides better fire resistance.
- one or more valves 9 are provided in the armature which prevent the armature from bursting under the effect of the expansion of the gas included.
- the walls 5a and 5b are obtained by assembling spherical sectors, the frame 10 being trapped between the walls by seams or welds.
Abstract
An inflatable, double-walled (5A, 5B) personal heat shield (1) providing temporary protection against fire.
Description
BOUCLIER THERMIQUE INDIVIDUEL INDIVIDUAL THERMAL SHIELD
La présente invention a pour objet un bouclier thermique individuel destiné en particulier, mais non exclusivement, à la protection des personnes luttant contre les incendies de forêts.The subject of the present invention is an individual heat shield intended in particular, but not exclusively, for the protection of persons fighting against forest fires.
Il arrive trop fréquemment qu'une personne appelée à lutter contre les incendies de forêt se trouve brusquement, malgré toutes les précautions qui peuvent être prises, cernée par les flammes, sans possibilité de s'échapper. L'issue d'une telle situation est, en général, fatale. Dans le cas des incendies de forêt, notamment lorsque le vent souffle à forte vitesse, le front des flammes se déplace très rapidement . Il atteint une température de l'ordre de 800°C pendant une durée de l'ordre de dix secondes pour décroître ensuite assez rapidement.Too often, a person called to fight forest fires is suddenly, despite all the precautions that can be taken, surrounded by flames, without the possibility of escaping. The outcome of such a situation is, in general, fatal. In the case of forest fires, especially when the wind is blowing at high speed, the flame front moves very quickly. It reaches a temperature of the order of 800 ° C for a period of the order of ten seconds to then decrease fairly quickly.
La présente invention repose donc sur l'idée qu'il est souhaitable de mettre à la disposition des pompiers, ou de toute personne pouvant être prise dans un incendie se propageant à grande vitesse, un abri pouvant résister un certain temps, par exemple quelques minutes, aux flammes et à une élévation brutale de température. Cette protection doit pouvoir être mise en place instantanément et automatiquement pour éviter une panique compréhensible et pouvoir résister à l'élévation brutale de température.The present invention is therefore based on the idea that it is desirable to make available to firefighters, or any person who may be caught in a fire propagating at high speed, a shelter which can withstand a certain time, for example a few minutes , flames and a sudden rise in temperature. This protection must be able to be installed instantly and automatically to avoid understandable panic and to be able to withstand the sudden rise in temperature.
La présente invention a pour objet un dispositif permettant d'atteindre ces objectifs.The present invention relates to a device for achieving these objectives.
On connaît déjà, par GB-A-2 137 250 un abri individuel constitué par une tente destinée à protéger une personne contre les risques N.B.C (nucléaire, biologique et chimique). Mais cet abri doit être installé avant que la
personne s'y introduise ce qui demande un certain temps. D'autre part, un tel abri, nécessairement étanche n'est pas conçu pour résister au feu.We already know, from GB-A-2 137 250 an individual shelter constituted by a tent intended to protect a person against NBC risks (nuclear, biological and chemical). But this shelter must be installed before the nobody gets in there which takes a while. On the other hand, such a necessarily waterproof shelter is not designed to withstand fire.
Selon la présente invention, le bouclier thermique individuel est caractérisé en ce qu'il comporte une structure gonflable solidaire du porteur, dépliable automatiquement, et à double paroi, la paroi externe étant réalisée en un matériau antifeu, une couche gazeuse introduite entre les deux parois constituant un écran isolant.According to the present invention, the individual heat shield is characterized in that it comprises an inflatable structure integral with the carrier, automatically unfoldable, and with a double wall, the external wall being made of a fire-resistant material, a gaseous layer introduced between the two walls. constituting an insulating screen.
Selon une autre caractéristique de l'invention, le bouclier est de forme sensiblement hémisphérique.According to another characteristic of the invention, the shield is of substantially hemispherical shape.
Cette forme permet de réfléchir dans de bonnes conditions une partie du rayonnement de chaleur incident, sans accumulation de chaleur dans les angles. Par ailleurs, elle permet de limiter la hauteur au-dessus du sol de l'ensemble personne-bouclier. Par ailleurs, lors du développement d'un incendie le sol reste, en raison de son inertie thermique à la température ambiante pendant un certain temps et peut ainsi constituer une réserve de froid.This shape allows part of the incident heat radiation to be reflected in good conditions, without heat accumulation in the corners. Furthermore, it makes it possible to limit the height above the ground of the person-shield assembly. Furthermore, during the development of a fire, the ground remains, due to its thermal inertia at room temperature for a certain time and can thus constitute a reserve of cold.
Selon un mode particulier de réalisation de l'invention, une ossature gonflable est disposée entre les deux parois. Ainsi, la quantité de gaz nécessaire au dépliage du bouclier est limitée, cette caractéristique permet également de résoudre le problème de l'étanchéité au gaz de l'enveloppe externe qui est soumise à une très haute température.According to a particular embodiment of the invention, an inflatable frame is disposed between the two walls. Thus, the quantity of gas required for unfolding the shield is limited, this characteristic also makes it possible to solve the problem of the gas tightness of the external envelope which is subjected to a very high temperature.
D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description qui va suivre de modes particuliers de réalisation, donnés uniquement à titre d'exemples non limitatifs, en regard des dessins qui représentent :
-4-Other characteristics and advantages of the invention will appear during the description which follows of particular embodiments, given solely by way of nonlimiting examples, with reference to the drawings which represent: -4-
conserver une épaisseur constante entre celles-ci. Mais les différents compartiments communiquent.keep a constant thickness between them. But the different compartments communicate.
A la partie inférieure des parois 5, est prévu un boudin souple 12 qui a pour but, en épousant les irrégularités du sol d'assurer une certaine étanchéité afin que l'air chauffé par les flammes ne vienne pas brûler les poumons de la personne se trouvant sous le bouclier. De préférence, on prévoit, à l'intérieur du bouclier 1, des poignées 8 permettant d'appliquer le bouclier contre le sol. Le volume d'air interne au bouclier est suffisant pour assurer la respiration pendant quelques minutes. Il est toutefois possible de prévoir une assistance respiratoire.At the lower part of the walls 5, a flexible tube 12 is provided which has the purpose, by matching the irregularities of the ground, of ensuring a certain seal so that the air heated by the flames does not come to burn the lungs of the person. finding it under the shield. Preferably, there are provided, inside the shield 1, handles 8 allowing the shield to be applied against the ground. The internal air volume in the shield is sufficient to ensure breathing for a few minutes. It is however possible to provide respiratory assistance.
La personne se trouvant au-dessous du bouclier prend une position repliée, la tête , de préférence protégée par un casque reposant sur le sol. Elle porte une ceinture 6 telle que celle qui est représentée sur la figure 3. Sur la ceinture 6 est fixé un sac 7 à l'intérieur duquel est replié le bouclier 1. Egalement sur la ceinture est fixé un réservoir ou bombe 4 de gaz comprimé , relié au sac 7, afin de gonfler le bouclier 1. L'ouverture du réservoir 4 peut être provoquée par traction sur une poignée 2 ou par tout autre moyen, à condition qu'elle soit rapide ce qui est une condition essentielle d'une protection efficace. Le bouclier peut ainsi être porté en permanence au cours des opérations, dans l'état plié, il est peu encombrant et ne gêne pas les évolutions nécessaires. Il peut également être est inclus dans un sac à dos comme un parachute. La bombe de gaz peut également être incluse à l'intérieur du dispositif.The person below the shield takes a folded position, the head, preferably protected by a helmet resting on the ground. It carries a belt 6 such as that which is shown in FIG. 3. On the belt 6 is fixed a bag 7 inside which the shield is folded 1. Also on the belt is fixed a reservoir or bomb 4 of compressed gas , connected to the bag 7, in order to inflate the shield 1. The opening of the reservoir 4 can be brought about by pulling on a handle 2 or by any other means, provided that it is rapid, which is an essential condition for effective protection. The shield can thus be worn permanently during operations, in the folded state, it is compact and does not hinder the necessary changes. It can also be included in a backpack as a parachute. The gas bomb can also be included inside the device.
Comme cela est représenté sur la figure 1, après ouverture du bouclier, celui-ci reste attaché par une extrémité 14 du sac 7 à la ceinture 6 du porteur de sorte que le mouvement vers le sol de celui-ci conduise à la position voulue du bouclier.
-3-As shown in Figure 1, after opening the shield, it remains attached by one end 14 of the bag 7 to the belt 6 of the wearer so that the movement towards the ground thereof leads to the desired position of the shield. -3-
- La figure 1, une vue en coupe verticale d'un bouclier selon l'invention, une personne étant en position de protection;- Figure 1, a vertical sectional view of a shield according to the invention, a person being in the protective position;
- la figure 2, une vue extérieure du bouclier;- Figure 2, an external view of the shield;
- la figure 3, une vue du bouclier avant utilisation;- Figure 3, a view of the shield before use;
- la figure 4, une vue explosée du bouclier muni d'une ossature gonflable.- Figure 4, an exploded view of the shield provided with an inflatable frame.
La figure 1 montre, en coupe verticale un bouclier thermique selon l'invention à l'intérieur duquel est protégé une personne en position foetale. Il importe en effet que cette personne soit le plus près du sol afin d'éviter les effets de souffle et de bénéficier de la température du sol. Comme cela apparaît sur la figure, le bouclier désigné d'une manière générale par la référence 1 comprend une enveloppe 5 à double paroi extérieure 5a, et intérieure 5b. Entre les parois 5a et 5b se trouve une couche de gaz 3, et, par exemple d'air ou de tout autre gaz qui a servi à gonfler l'enveloppe. Cet air est légèrement en surpression pour assurer une rigidité relative de l'enveloppe. Après déploiement du bouclier, le gaz inclus dans l'enveloppe joue le rôle d'isolant dans la transmission de chaleur. Bien entendu, lorsque l'incendie se propage, la température du gaz croît, notamment au voisinage de l'enveloppe extérieure 5a ce qui provoque une dilatation du gaz. Afin que le dispositif puisse supporter la surpression corrélative, on prévoit avantageusement des clapets ou soupapes calibrés antiretour qui vident l'enveloppe au fur et à mesure que le volume du gaz augmente en raison de l'augmentation de température.Figure 1 shows, in vertical section a heat shield according to the invention inside which is protected a person in the fetal position. It is indeed important that this person is closest to the ground in order to avoid the effects of blowing and to benefit from the temperature of the ground. As shown in the figure, the shield generally designated by the reference 1 comprises an envelope 5 with an outer double wall 5a, and an interior 5b. Between the walls 5a and 5b is a layer of gas 3, and, for example air or any other gas which has served to inflate the envelope. This air is slightly overpressure to ensure a relative rigidity of the envelope. After deployment of the shield, the gas included in the envelope acts as an insulator in the heat transmission. Of course, when the fire spreads, the temperature of the gas increases, especially in the vicinity of the outer casing 5a, which causes the gas to expand. In order for the device to be able to withstand the corresponding overpressure, valves or calibrated non-return valves are advantageously provided which empty the envelope as the volume of the gas increases due to the increase in temperature.
Les enveloppes 5a et 5b sont avantageusement réalisées par couture ou soudure 15 d'éléments de secteurs spheriques 13 comme cela apparaît sur la figure 2. Les parois peuvent être maintenues entre elles par des bandes de tissu 16 pour
Dans le premier mode de réalisation qui vient d'être décrit, l'air ou le gaz comprimé, qui est avantageusement un gaz inerte tel que de l'azote, assure d'une part le déploiement du bouclier et, d'autre part l'isolation entre les deux enveloppes, le phénomène de rayonnement étant, sur une courte période prépondérant par rapport à la transmission de chaleur.The envelopes 5a and 5b are advantageously produced by sewing or welding 15 of elements of spherical sectors 13 as shown in FIG. 2. The walls can be held together by strips of fabric 16 to In the first embodiment which has just been described, the compressed air or gas, which is advantageously an inert gas such as nitrogen, ensures on the one hand the deployment of the shield and, on the other hand the insulation between the two envelopes, the radiation phenomenon being, over a short period predominant compared to the heat transmission.
Une autre solution est représentée sur la figure 4. Ce mode de réalisation diffère du premier principalement en ce que le déploiement du bouclier est obtenu par la présence d'une armature gonflable 10 qui se présente sous la forme d'une pieuvre. Cette armature est emprisonnée entre les parois 5a et 5b. Cette solidarisation peut, par exemple être obtenue par couture ou collage, mais la couture assure une meilleure résistance au feu. Bien entendu, on prévoit dans l'armature une ou plusieurs soupapes 9 qui empêchent l'éclatement de l'armature sous l'effet de la dilatation du gaz inclus.Another solution is shown in Figure 4. This embodiment differs from the first mainly in that the deployment of the shield is obtained by the presence of an inflatable frame 10 which is in the form of an octopus. This frame is trapped between the walls 5a and 5b. This connection can, for example, be obtained by sewing or gluing, but the seam provides better fire resistance. Of course, one or more valves 9 are provided in the armature which prevent the armature from bursting under the effect of the expansion of the gas included.
Comme précédemment, les parois 5a et 5 b sont obtenues par assemblage de secteurs spheriques, l'armature 10 étant emprisonnée entre les parois par des coutures ou soudures.As before, the walls 5a and 5b are obtained by assembling spherical sectors, the frame 10 being trapped between the walls by seams or welds.
Afin de renforcer la sécurité du dispositif il est possible de prévoir une sortie sur la partie centrale 14, destinée à pulvériser sur le bouclier un liquide ou mousse spécifique suivant l'utilisation. La commande de cette action peut être simultanée au déploiement du bouclier.In order to reinforce the safety of the device, it is possible to provide an outlet on the central part 14, intended to spray on the shield a specific liquid or foam depending on the use. The command of this action can be simultaneous with the deployment of the shield.
Il va de soi que de nombreuses variantes peuvent être introduites, notamment par substitution de moyens techniquement équivalents sans pour autant sortir du cadre de l'invention.
It goes without saying that many variants can be introduced, in particular by substitution of technically equivalent means without departing from the scope of the invention.
Claims
REVENDICATIONS
° Bouclier thermique individuel, caractérisé en ce qu'il comporte une structure gonflable (5) solidaire du porteur, dépliable automatiquement, et à double paroi (5a,5b),la paroi externe (5a) étant réalisée en un matériau antifeu, une couche gazeuse (3) introduite entre les deux parois constituant un écran isolant.° Individual heat shield, characterized in that it comprises an inflatable structure (5) integral with the carrier, automatically unfoldable, and with double wall (5a, 5b), the external wall (5a) being made of a fire-resistant material, a layer gas (3) introduced between the two walls constituting an insulating screen.
° Bouclier selon la revendication 1, caractérisé en ce qu'il est de forme sensiblement hémisphérique.° Shield according to claim 1, characterized in that it is of substantially hemispherical shape.
° Bouclier selon l'une des revendications 1 ou 2, caractérisé en ce qu'il comprend une armature gonflable (10) emprisonnée entre les parois (5a,5b).° Shield according to one of claims 1 or 2, characterized in that it comprises an inflatable frame (10) trapped between the walls (5a, 5b).
° Bouclier selon l'une quelconque des revendications 1 à 3, caractérisé en ce que chaque paroi (5a,5b) est constituée par assemblage de secteurs spheriques, par couture ou soudure, les deux parois (5a,5b) étant espacées par des bandes de tissu ou par les branches de l'armature (10).° Shield according to any one of claims 1 to 3, characterized in that each wall (5a, 5b) is formed by assembling spherical sectors, by sewing or welding, the two walls (5a, 5b) being spaced apart by strips of fabric or by the branches of the frame (10).
° Bouclier selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de portage (6) sont munis d'un réservoir (4) de gaz sous pression relié à la chambre constituée par les parois ou° Shield according to any one of the preceding claims, characterized in that the carrying means (6) are provided with a reservoir (4) of pressurized gas connected to the chamber formed by the walls or
1'armature.The frame.
° Bouclier selon l'une quelconque des revendications précédentes, caractérisé en ce qu' une jupe (12) déformable et souple est prévue à la partie inférieure des parois (5a,5b).
° Bouclier selon l'une quelconque des revendications précédentes, caractérisé en ce que des poignées d'appui (8) sont prévues à la partie inférieure de la paroi (5b).° Shield according to any one of the preceding claims, characterized in that a deformable and flexible skirt (12) is provided at the lower part of the walls (5a, 5b). ° Shield according to any one of the preceding claims, characterized in that support handles (8) are provided at the lower part of the wall (5b).
° Bouclier selon l'une quelconque des revendications précédentes, caractérisé en ce que au moins une soupape (9) est prévue dans la paroi extérieure (5a) ou sur l'armature gonflable (10).° Shield according to any one of the preceding claims, characterized in that at least one valve (9) is provided in the outer wall (5a) or on the inflatable frame (10).
° Bouclier selon l'une quelconque des revendications précédentes, caractérisé en ce que une ouverture est prévue dans la partie centrale (14) pour pulvériser un produit de protection.
° Shield according to any one of the preceding claims, characterized in that an opening is provided in the central part (14) for spraying a protective product.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9008651A FR2663854A1 (en) | 1990-07-02 | 1990-07-02 | Portable personal security (safety) device, designed to protect an individual from the flames of a fire, and from any other danger or pollution requiring such a device |
| FR90/08651 | 1990-07-02 | ||
| FR91/02207 | 1991-02-25 | ||
| FR9102207A FR2673113A1 (en) | 1991-02-25 | 1991-02-25 | Device making it possible to improve a device intended for the protection of an individual from fire or any other contaminating (polluting) external attack requiring such a device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1992000121A1 true WO1992000121A1 (en) | 1992-01-09 |
Family
ID=26228133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1991/000521 WO1992000121A1 (en) | 1990-07-02 | 1991-07-01 | Personal heat shield |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1992000121A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5661029A (en) * | 1994-05-12 | 1997-08-26 | Biomed | Biological culture growth and observation device |
| US6889760B2 (en) * | 2002-05-03 | 2005-05-10 | Hudson Products Corporation | Heat shield |
| CN104257054A (en) * | 2014-10-05 | 2015-01-07 | 左欣艳 | Multifunctional cubic protection product |
| CN110882493A (en) * | 2019-10-15 | 2020-03-17 | 张茹 | Fire-proof explosion-proof escape umbrella |
| WO2020248823A1 (en) * | 2019-06-14 | 2020-12-17 | 广州市增城区林业和园林科学研究所 | Fire rescue capsule |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1047240A (en) * | 1900-01-01 | |||
| US2794186A (en) * | 1951-01-13 | 1957-06-04 | Butters Melissa Elizabeth | Wearable protective body-covering structure |
| DE2234534A1 (en) * | 1972-07-14 | 1974-01-24 | Curt A Gloetzl | PNEUMATICS - UMBRELLA |
| GB2137250A (en) * | 1983-03-23 | 1984-10-03 | Brien Neil Michael O | Inflatable shelter against chemical, biological, or nuclear hazards |
-
1991
- 1991-07-01 WO PCT/FR1991/000521 patent/WO1992000121A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1047240A (en) * | 1900-01-01 | |||
| US2794186A (en) * | 1951-01-13 | 1957-06-04 | Butters Melissa Elizabeth | Wearable protective body-covering structure |
| DE2234534A1 (en) * | 1972-07-14 | 1974-01-24 | Curt A Gloetzl | PNEUMATICS - UMBRELLA |
| GB2137250A (en) * | 1983-03-23 | 1984-10-03 | Brien Neil Michael O | Inflatable shelter against chemical, biological, or nuclear hazards |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5661029A (en) * | 1994-05-12 | 1997-08-26 | Biomed | Biological culture growth and observation device |
| US6889760B2 (en) * | 2002-05-03 | 2005-05-10 | Hudson Products Corporation | Heat shield |
| CN104257054A (en) * | 2014-10-05 | 2015-01-07 | 左欣艳 | Multifunctional cubic protection product |
| WO2020248823A1 (en) * | 2019-06-14 | 2020-12-17 | 广州市增城区林业和园林科学研究所 | Fire rescue capsule |
| CN110882493A (en) * | 2019-10-15 | 2020-03-17 | 张茹 | Fire-proof explosion-proof escape umbrella |
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