Classifications

• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
  • A45B19/00—Special folding or telescoping of umbrellas
  • A45B19/02—Inflatable umbrellas; Umbrellas without ribs

Definitions

• the present invention relates to a self-inflating screen.
• umbrella according to the preamble of claim 1.
• the invention also relates to a self-inflating balloon according to the features of claim 10.
• a rain or parasol which has an inflatable and screen or disc-shaped air chamber which is coupled to a compressed air cartridge.
• a valve which is actuated with a push button, the air supply of the cartridge can be controlled to the air chamber.
• the umbrella is no longer needed, the air is released from the air chamber by means of the valve and the umbrella is folded and stowed in a housing.
• the document US-A-3,889,700 proposes a compact self-inflating umbrella for single use.
• the umbrella has a housing whose lower portion serves as a handle for the use of the umbrella.
• a pressure vessel is arranged near the bottom, which is filled with a pressurized boiling liquid.
• the inflatable umbrella is stowed in the folded state.
• a closure element of the pressure vessel is broken away by mechanical action from the outside, so that the liquid exits through the opening produced thereby, thereby relaxed and introduced as a gaseous substance in the inflatable chambers of the screen.
• the umbrella is thrown away after a single use.
• a self-inflating screen comprises an inflatable shell of flexible material, wherein in the interior of the shell by a chemical reaction, a gaseous substance is generated.
• the umbrella is an umbrella.
• the umbrella is a parasol.
• the present invention is therefore based on the fundamental insight that the devices proposed in the prior art for the provision or production of a gas for inflating the screen cover are necessarily too voluminous and thus too bulky, because the medium to be used for inflation is conceptually necessary , in non- Use state must be enclosed in a pressure-tight container, whether in the form of a compressed air cartridge or a pressure-compressed boiling liquid enclosed in a container.
• the inventive idea provides the basis for storing, without the use of rigid pressure vessels, certain starting substances with the aid of which the gaseous substance is to be produced.
• the advantage is also that individual chambers can be individually filled by said starting materials with gas.
• two or more chemical substances can be arranged as starting substances of the chemical reaction in the interior of the shell spatially separated from each other and the chemical reaction can be triggered in the application by the chemical starting substances are brought into contact with each other.
• Marking which can also be configured as a predetermined breaking point, serves to indicate to the user to press in the application to the marked position and thus to open the container by applying pressure.
• the container may for example have a flexible outer skin, so that it can be made to burst by mechanical pressure on the container, and thus the chemical substance located therein exits.
• the container can in another embodiment be designed so that it is opened by pulling force.
• a plurality of separate air chambers are provided and each air chamber is filled with air by means of its own chemical reaction.
• the umbrella is filled with a chamber while the handle is being filled with a separate chamber.
• the screen is only partially equipped with air chambers, with material between the chambers, for example Embodiment are the chambers in those places where usually the screen-tensioning frame is, that is, the chambers are arranged in a star shape so that the screen is stretched between them.
• the chambers can also be individually filled with gas, then each chamber This advantage is not given in the prior art because multiple print cartridges can not be used.
• a first chemical substance contains or consists of a solid and a second chemical substance contains or consists of a liquid, and when the substances come into contact, the chemical reaction consists in that the solid material passes through the liquid is dissolved, the gaseous substance being one of the reaction products.
• the solid may contain or consist of sodium carbonate (soda) or sodium bicarbonate (soda) and the second chemical substance may contain an acid.
• the reaction product resulting from the dissolution of the stated solids in the acid is gaseous CO 2 .
• the acid citric acid conveniently as a component of lemon juice, or tartaric acid can be used.
• another solid soluble in a liquid may be chosen such that upon dissolution of the solid in the liquid, a gaseous substance such as CO 2 or O 2 becomes free.
• the solid can be given by a kind of effervescent powder and the liquid in the simplest case by water, so that also the desired result of a chemical reaction to form a gaseous substance can be achieved.
• the solid should preferably be in the form of a powder or granules, so that it has as many free surfaces as possible, on which the liquid can attack.
• loose sodium bicarbonate preferably (e.g., 4.88 g (58 mmol)) as the crystal powder and a, e.g. solution of citric acid and water, preferably 3.78 g (19.7 mmol) of citric acid and 16 ml of water, packed in a thin plastic foil bag (e.g., 6 ⁇ 6 cm format).
• a thin plastic foil bag e.g., 6 ⁇ 6 cm format.
• the plastic bag is preferably brought to burst by pressure, for example by means of a finger, and the CO 2 development proceeds rapidly without any further external influence and brings the umbrella to unfold. It can also be one
• Sodium bicarbonate is preferred because it is twice as efficient as soda. It's also safer and more eco-friendly because it's not as alkaline as soda.
• an acid is one that has a "irritant" rating.
• the overpressure ⁇ p in the chamber is preferably above 0.1 bar, preferably between 0.1 and 2 bar, preferably between 0.2 and 1 bar, particularly preferably between 0.3 and 0.5 bar. For heavier material, a higher pressure can be used.
• the gas (CO 2 ) propagating in the screen in a preferred embodiment, carries with it colored substances or dyes which may be fluorescent or phosphorescent or otherwise light up.
• a handle part in the form of a flexible loop is attached to a position of the outer wall of the shell.
• a material is used as used in vehicle airbags.
• the air chambers may have internal threads or cross connections.
• the top or bottom side or sides can be connected.
• the air chamber can be bowl-shaped. Preference is given to a water-repellent material.
• the screen can also have a double-wall construction. Portions of the screen may include carbon nanotubes. These can be embedded in the screen material.
• Kevlar fibers can be used.
• PET polyethylene terephthalate
• Mylar is particularly preferably a polyethylene terephthalate polyester film (BOPET: biaxially oriented polyethylene terephthalate).
• BOPET biaxially oriented polyethylene terephthalate
• Mylar is characterized by high tensile strength, chemical resistance, plastic stability and transparency and transparency, and is an electrical insulator. These properties are advantageous for the screen according to the invention.
• the screen is created by sewing, welding or gluing. Essential for both the selection of the material and the production, the airtightness. Seams and material must be chosen so that the pressure of the gas volume is resisted and no gas loss occurs.
• threads can connect the handle to the screen. Preference is given to a connection that makes the longest path between the outer edge of the window and the handle. Preferred is a radial distribution.
• the screen material may be colored or transparent. It can also be phosphorescent or fluorescent.
• the screen material may have signal color.
• the screen has an edge which prevents water from flowing under the screen.
• circular around the screen at the edge is an air chamber forming a bead.
• the chambers comprising the chemicals have predetermined breaking points. If the chemicals are in bags, there may be a perforation.
• the screen is bar-shaped in the folded state.
• the predetermined breaking point preferably lies in the center of the center, so that the chemical reaction is triggered by a simple breaking or pressure on the predetermined breaking point of the rod.
• the screen material is folded after gluing in Origami technique.
• the screen material is biodegradable itself.
• Show it: 1 is a perspective view (obliquely from above) of a first embodiment of a self-inflating umbrella in the inflated state;
• Fig. 2 is a perspective view (from below) of the first embodiment of Fig. 1;
• Fig. 3 is a cross-sectional view of a central chamber of the shell of the self-inflating umbrella
• Figure 4 is a plan view of the folded umbrella with the uppermost central chamber.
• FIG. 5 is a perspective view (obliquely from above) of a second embodiment of a self-inflating umbrella according to the invention.
• a first embodiment of a self-inflating umbrella according to the invention is shown in a perspective view from above.
• the self-inflating umbrella 10 consists essentially of an inflatable shell 11 of a flexible material, for example a suitable plastic material such as polypropylene or the like. Alternatively, a suitable film material may be used.
• a vacuum in the non-use state, ie before inflation prevails in the interior of the shell 11, a vacuum, so that it can be folded to a very narrow space.
• the shell 11 is made such that it assumes the form of a hood shown in FIG. 1 in the inflated state, which can be held over the head to protect against rain.
• FIG. 1 In the perspective view obliquely from below shown in Fig.
• the umbrella 10 can be produced in different sizes. In the smallest embodiment, the diameter of the hood is just large enough to cover the user's head. In somewhat larger embodiments, the hood may have a diameter such that the shoulder areas of the user are still covered.
• the shell 11 may include a central chamber 12, which may have a circular shape in plan view, for example, and the extent and limitation of which may be visible to the outside. In the central chamber 12, the gaseous substance is generated to activate and inflate the umbrella 10.
• the central chamber 12 is shown in cross section and in a plan view.
• a container 12.2 is applied to a bottom surface 12.1, in which citric acid or lemon juice is contained.
• a granulate or powder 12.3 made of soda (sodium carbonate) or sodium bicarbonate (sodium bicarbonate) is arranged.
• a mark 12.4 is attached on the convex outside of the shell 11. At this mark, the outer wall of the shell 11 can be pressed to the container 12.2, so that the container 12.2 can be compressed and brought to bursting.
• the outer skin of the shell 11 is transparent or in the region of the central chamber 12 transparent, so that the user can visually recognize the container 12.2 and after the forced bursting of the container 12.2 also observe the process of gas production can.
• the container 12.2 may consist of a small plastic-molded envelope or bag filled with lemon juice or citric acid and having a rectangular shape and welded together at one or more of the lateral boundaries. Upon compression, the sheath preferably ruptures at one or more of these seams. As shown in Figure 4, therefore, suitable provisions can be made that the container 12.2 pops only on one side and thus its contents in one direction only, namely in the direction of the granules 12.3, exits. As shown, the container 12.2 can be additionally reinforced at three lateral boundaries and connected to the bottom side 12.1. At the
• the membrane 12.5 consists of a material which is permeable to the gaseous substance produced in the chemical reaction, in the present embodiment thus gaseous CO 2 , or alternatively has a dense network of pores, through which only the gaseous substance can pass , This ensures that neither before putting the umbrella 10 into use the granules 12.3 can get into the chamber 12 and the remaining interior of the shell 11, nor that after the forced bursting of the container 12.2, the liquid can escape in a manner without the Granules 12.3 to come into contact.
• the liquid may for this purpose have a surface tension which ensures that it can not pass through the pores of the membrane 12.5.
• the granules of soda ie sodium carbonate with the chemical name Na 2 CO 3 or from sodium, ie sodium bicarbonate with the chemical name NaHCO 3 .
• the acid used to dissolve the soda granules in the present embodiment is citric acid with the chemical abbreviation C 6 H 8 O 7 .
• Citric acid is contained in lemon juice at a level of 5-7%, so in the simplest case 12.2 citrus juice is kept in the container. As a reaction product when dissolving the soda granules with citric acid falls gaseous
• Soda + citric acid water + carbon dioxide + sodium citrate
• the shell 11 in the region of the central chamber 12 may have a slightly greater thickness than the rest of the outer skin of the shell 11, so as to provide the necessary stability and strength in this area.
• the loop 13 is mounted on the outside of this bottom portion of flexible material.
• the loop 13 is preferably made of a thin space-saving layer of a suitable plastic material such as polypropylene.
• the outer edge of the shell 11 is also shown. As can be seen, in this area, an upper shell part 11.1 can be welded together with a lower shell part 11.2 along a seam 11.3 running along the circumference.
• the product is folded such that the square shown results around the central compartment 12, the shell 11 and the loop 13 being suitably positioned in an image plane behind the central compartment 12 folded square and are connected to the square.
• the actual size ratios can correspond approximately to the size ratios shown in FIGS. 3 and 4.
• the square pack can thus be easily carried in a pocket of a garment. If desired, however, the square pack may be stored in a suitably adapted case, particularly to prevent the umbrella from being inadvertently released.
• FIG. 5 a second embodiment of a self-inflating umbrella according to the invention is shown in a perspective view obliquely from above.
• the self-inflating umbrella 20 has a sheath 21 which has a number of inflatable channels 21.1 extending radially from a central chamber 22, between which non-sheath-shaped, single-layer regions 21.2 extend.
• the chamber 22 is shaped substantially the same as the chamber 12 of Figures 3 and 4 of the first embodiment.
• the illustration of FIG. 3 can also be seen as a cross-sectional view through the umbrella 20 of FIG Fig. 5 serve, wherein the cross section through the chamber 22 and two of these outgoing channels 21.1 is placed.
• channels 21.1 instead of 7 channels 21.1 as shown in Fig. 5, more channels or fewer channels, such as only 2 or 3 channels, may be used.
• the self-inflating umbrella of the present invention may be discarded.
• Environmentally friendly materials are therefore preferred.
• the invention also relates to a self-inflating balloon in which the same principle as in the above-described umbrella is used and also all other details and features described above in connection with the self-inflating umbrella may be used.
• a simple toy balloon in particular in the form of a foil balloon made of a film material can be made, inside which there is a vacuum before use.
• a container with an acid, such as citric acid, and outside the container a solid, such as a soda granules, be arranged.
• the container can, as described above, be fastened at a specific point in the interior of the casing and suitably marked on the outside. But it can also be freely movable within the shell.
• the balloon is small enough, it can be felt from the outside, where the container is located.
• the soda granules can likewise be fixed at a specific point in the interior of the casing as described above or, alternatively, be arranged to be freely movable in the interior of the casing. If the balloon is small enough, then even in this case, the granules will be almost completely covered by the liquid.
• the container may be burst, causing the balloon formed by the chemical reaction to inflate the balloon.
• the balloon may consist of two parts, in particular foils, which are each welded together at their circumferential edges and thus a closed envelope is produced, which is filled with the container and the granules and in which there is otherwise a vacuum.
• the two films are congruent to each other, ie can be placed congruent to each other.
• the films can otherwise be inflated Condition of the balloon to give a figure like an animal or the like.
• the films may also be circular, so that the inflated balloon has substantially the shape of a ball.
• the balloon can also be used as an advertising medium by printing a message on the outer surface of the envelope.

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• Walking Sticks, Umbrellas, And Fans (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=38141358

Family Applications (1)

Country Status (10)

Families Citing this family (6)

Citations (6)

Family Cites Families (21)

• 2006
  • 2006-02-28 DE DE102006009262A patent/DE102006009262B4/de not_active Expired - Fee Related
• 2007
  • 2007-02-26 WO PCT/EP2007/001626 patent/WO2007098902A1/de active Application Filing
  • 2007-02-26 RU RU2008138573/12A patent/RU2008138573A/ru not_active Application Discontinuation
  • 2007-02-26 US US12/224,570 patent/US20090301532A1/en not_active Abandoned
  • 2007-02-26 CN CNA2007800127301A patent/CN101420879A/zh active Pending
  • 2007-02-26 BR BRPI0708342-4A patent/BRPI0708342A2/pt not_active Application Discontinuation
  • 2007-02-26 JP JP2008556696A patent/JP2009528102A/ja active Pending
  • 2007-02-26 EP EP07722938A patent/EP1991081A1/de not_active Withdrawn
  • 2007-02-26 AU AU2007220721A patent/AU2007220721A1/en not_active Abandoned
  • 2007-02-26 CA CA002644436A patent/CA2644436A1/en not_active Abandoned
• 2011
  • 2011-07-29 US US13/194,785 patent/US20120103378A1/en not_active Abandoned

Patent Citations (6)

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