WO2008082113A1

WO2008082113A1 - Firecracker

Info

Publication number: WO2008082113A1
Application number: PCT/KR2007/006731
Authority: WO
Inventors: Yeong-Cheol Sin; Uyn-Soo Eo
Original assignee: Saesung International Co., Ltd.
Priority date: 2006-12-30
Filing date: 2007-12-21
Publication date: 2008-07-10
Also published as: KR100787915B1

Abstract

A firecracker includes a blast tube, a paper cap coupled to a top portion of the blast tube, and roundly-wound decorative strings stored inside the blast tube, the paper cap being detachable from the blast tube in response to a pressure applied to the strings so that the strings are discharged and scattered outwards. The fire cracker can discharge decorative paper strings using compressed gas. The fire cracker is very safe, is free from a fire, and is an article of good quality because it diffuses a fragrant smell of flower from the compressed gas.

Description

Description FIRECRACKER

Technical Field

[1] The present invention relates to a firecracker, and more particularly, a fire cracker capable of discharging decorative paper strings using compressed gas. The firecracker is very safe, is free from a fire, and is an article of good quality because it diffuses a fragrant smell of flower from the compressed gas. Background Art

[2] In general, there are various types of firecrackers. For example, a specific type of firecracker, which discharges and scatters decorative paper strings, is used to congratulate a happy event such as a birthday party or a wedding ceremony. In this type of firecracker, the decorative paper strings are stacked, and gunpowder is charged in a blast tube, which is sealed with a paper cap. When the charged gunpowder explodes, the paper cap is separated from the blast tube and concurrently the decorative strings are discharged, for instance, to a person to be congratulated.

[3] However, in the case in which the strings are discharged by explosion of the gunpowder as described above, there are some problems. For example, flames created by the explosion of the gunpowder may burn the person to be congratulated or cause a fire.

[4] Furthermore, a stinging smell of the exploded gunpowder would make people sick, and an explosion sound would be noisy enough to frighten children.

[5] In particular, an igniter should be added in order to trigger the explosion of the gunpowder. If the igniter is not sufficiently stable, there is a risk of accident. That is, the gunpowder would explode by an external impact during the distribution of the firecracker.

[6]

Disclosure of Invention

Technical Problem

[7] The present invention has been made to solve the foregoing problems with the prior art, and therefore the present invention provides a fire cracker capable of discharging decorative paper strings using compressed gas, which is very safe, is free from a fire, and is an article of good quality because it diffuses a fragrant smell of flower from the compressed gas. Technical Solution

[8] According to an aspect of the invention, the firecracker includes a blast tube; a paper cap coupled to a top portion of the blast tube; and roundly-wound decorative strings stored inside the blast tube, the paper cap being detachable from the blast tube in response to a pressure applied to the strings so that the strings are discharged and scattered outwards. A partition is formed inside the blast tube, in the central portion thereof, and the strings are placed on the partition inside the blast tube, a nozzle having a pointed tip extends through a central portion of the partition and protrudes downward from the partition, inner guides protrude from both inner circumferential portions of the blast tube under the partition, vertical channels are formed in both upper portions of a cylindrical housing 20 with a compressed gas container stored therein, and horizontal channels and downwardly inclined channels are continuously formed under the vertical channels. When the housing is coupled to a lower portion of the blast tube, the inner guides of the blast tube enter the upper vertical channels and then the horizontal channels of the housing, so that the housing is fixed to the blast tube, and as the housing is further rotated to move the guides into the downwardly inclined channels, the container is raised along with the housing, so that the pointed tip of the nozzle penetrates an opening of the container, thereby causing compressed gas to be injected to the strings.

Advantageous Effects

[9] According to the invention as set forth above, the decorative paper strings are discharged using compressed gas such as carbon dioxide, which is charged in a metal container. The firecracker of the invention does not harm or burn people or cause a fire, and thus can be used very safely. The injection of the compressed gas generates only a light and small sound, and thus does not frighten children. Accordingly, the firecracker of the invention can completely overcome the problems of the prior art and thus maximize its own competitiveness. Brief Description of the Drawings

[10] The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[11] FIG. 1 is a perspective view illustrating a firecracker according to an embodiment of the invention;

[12] FIG. 2 is an exploded perspective view of the firecracker of FIG. 1;

[13] FIG. 3 is an exploded cross-sectional view of the firecracker of FIG. 1;

[14] FIG. 4 is an assembled cross-sectional view of the firecracker of FIG. 1; and

[15] FIG. 5 is a cross-sectional view illustrating a usage of the invention.

[16]

Best Mode for Carrying Out the Invention

[17] The present invention will now be described more fully with reference to the ac- companying drawings, in which exemplary embodiments thereof are shown.

[18] Referring to FIGS. 1 to 5, a firecracker 1 includes a blast tube 10 having an opened top end, a paper cap 15 sealing the top end of the blast tube 10 and decorative strings 14, which are roundly wound and stacked inside the blast tube 10.

[19] When a pressure is applied to the strings 14, the paper cap 15 is separated from the blast tube 10, so that the strings 14 are discharged and scattered from the wound position.

[20] Of course, the above-mentioned construction of the firecracker 1 is well known in the art. However, in the invention, the most important feature is to apply the pressure to the strings 14 by injecting compressed gas thereto.

[21] That is, a partition 11 is formed in the center of the inside of the blast tube 10, and the strings 14 are placed on the partition 11 inside the blast tube 10.

[22] A nozzle 12 having a pointed tip extends through the center of the partition 11, and protrudes downward from the underside of the partition 11.

[23] Guides 13 are located under the partition 11 and protrude from both sides of the inner circumference of the blast tube 10.

[24] A compressed gas container 30 is stored inside a cylindrical housing 20, which has an opened top end. In both sides of the top portion of the cylindrical housing 20, vertical channels 21a are formed. Horizontal channels 21b and downwardly inclined channels 21c are continuously formed under the vertical channels 21a.

[25] When the housing 20 is coupled with the lower portion of the blast tube 10, the inner guides 13 of the blast tube 10 enter the upper vertical channels 21a of the housing 20. When the housing 20 is turned, the guides 13 of the blast tube 10 move into the horizontal channels 21b of the housing 20, so that the housing 20 is fixed to the blast tube 10.

[26] As the housing 20 is further rotated to move the guides 13 into the downwardly inclined channels 21c, the container 30 is raised along with the housing 20, so that the pointed tip of the nozzle 12 penetrates the opening of the container 30. As a result, the compressed gas is injected through the nozzle 12 to the strings 14, thereby discharging and scattering the strings 14 outward.

[27] According to the invention having the above construction, in the firecracker 1 distributed in the market, the guides 13 of the blast tube 10 are located in the horizontal channels 21b of the housing 20, thereby fixing the housing 20 to the blast tube 10. When the housing 20 is merely rotated with respect to the blast tube 10, the guides 13 of the blast tube 10 move to the downwardly inclined channels 21c of the housing 20 and concurrently the nozzle 12 penetrates the opening of the container 30, so that compressed gas is injected to the strings 14, thereby discharging and scattering the strings 14. Accordingly, the firecracker can be very conveniently used. Since it is not necessary to use an igniter, the firecracker is very safe and also is free from explosion in spite of an external impact applied during the distribution thereof.

[28] Furthermore, since the power to discharge the paper strings 14 is produced from the compressed gas such as carbon dioxide, the firecracker of the invention can be used very safely without harming or burning people or causing a fire. The injection of the compressed gas generates only a weak and small sound, and thus does not frighten children. Accordingly, the firecracker of the invention can completely overcome the problems of the prior art and thus maximize its own competitiveness.

[29] The compressed gas charged into the container 30 may be mixed with a scent of, for example, lavender, acacia or aroma. When the compressed gas is injected, people can smell the diffusion of the scent, and thus is not sickened by a stinging smell of exploded gunpowder unlike in the prior art.

[30] The container 30 is made of metal or synthetic resin, or is desirably made of nonferrous metal such as aluminum.

[31] While the present invention has been described with reference to the particular illustrative embodiments and the accompanying drawings, it is not to be limited thereto but will be defined by the appended claims. It is to be appreciated that those skilled in the art can substitute, change or modify the embodiments in various forms without departing from the scope and spirit of the present invention.

[32]

Claims

[ 1 ] A firecracker comprising : a blast tube (10); a paper cap (15) coupled to a top portion of the blast tube (10); and roundly-wound decorative strings (14) stored inside the blast tube (10), the paper cap (15) being detachable from the blast tube (10) in response to a pressure applied to the strings (14) so that the strings (14) are discharged and scattered outwards, wherein a partition (11) is formed inside the blast tube (10), in a central portion thereof, and the strings (14) are placed on the partition (11) inside the blast tube (10), a nozzle (12) having a pointed tip extends through a central portion of the partition (11) and protrudes downward from the partition (11), inner guides (13) protrude from both inner circumferential portions of the blast tube (10) under the partition (11), vertical passages (21a) are formed in both upper portions of a cylindrical housing (20) with a compressed gas container (30) stored therein, and horizontal channels (21b) and downwardly inclined channels (21c) are continuously formed under the vertical channels (21a), whereby, when the housing (20) is coupled to a lower portion of the blast tube (10), the inner guides (13) of the blast tube (10) enter the upper vertical channels (21a) and then the horizontal channels (21b) of the housing (20), so that the housing (20) is fixed to the blast tube (10), and as the housing (20) is further rotated to move the guides (13) into the downwardly inclined channels (21c), the container (30) is raised along with the housing (20), so that the pointed tip of the nozzle (12) penetrates an opening of the container (30), thereby causing compressed gas to be injected to the strings (14).

[2] The firecracker according to claim 1, wherein the compressed gas charged in the container (30) comprises a scent, and the compressed gas comprises carbon dioxide.

[3] The firecracker according to claim 1, wherein the container (30) is made of nonferrous metal including aluminum.