AU2021282539B2

AU2021282539B2 - Aerosol Can

Info

Publication number: AU2021282539B2
Application number: AU2021282539A
Authority: AU
Inventors: Kok Ming WONG
Original assignee: Pavilion Coating M Sdn Bhd
Current assignee: Pavilion Coating M Sdn Bhd
Priority date: 2020-12-23
Filing date: 2021-12-10
Publication date: 2023-01-12
Anticipated expiration: 2041-12-10
Also published as: AU2021282539A1; CN114655586B; CN114655586A

Abstract

AEROSOL CAN 5 The present invention relates to an aerosol can (1). The aerosol can (1) comprises a body (100), a first disk (102) and a second disk (103) that are sealed hermetically at opposing ends of the body (100) and a valve assembly (300) which is fixedly mounted onto an annular boss of the first disk (102). An inner compartment (200) having a body with one end closed and a distal end open, is removably mounted onto an annular boss of the second disk (103). A 10 cutting means (500) is fitted into an inner compartment (200). According to the present invention, the cutting means (500) comprises a camshaft (508), a cutter means (510) and a fastening means (524). The camshaft (508) comprises a turning head (504) passing through a central opening in a mounting cup (506) that is provided with a seal (518). The cutter means (510) comprises a housing (516) that is provided with a recess (517) that fully encases a cam 15 (512) and a cam follower (514) that is further provided with a sharp blade (502) with a cutting point pointing away from the camshaft (508). The housing (516) is supported within the mounting cup. The fastening means (524) secures the camshaft (508) and the cutter means (510) to the mounting cup. When the turning head (504) is rotated, the camshaft (508) follows, in so doing, drives the cam (512) to push the cam follower (514) radially outwards 20 and hence forces the sharp blade (502) against the inside surface of the inner compartment (200) to pierce the inner compartment (200). With further rotation of the turning head (504), the camshaft (508) and hence the cam follower (514) and the sharp blade (502) will follow in the rotation to cut the inner compartment (200) until complete severance. 25 Fig. 1 1/6 500 ( 1504 10 500 106 0 103 2202 506 202 505 502 507 5 10 509 200 508 --------- 310 300 100 306 308 102 304 302 Fig. 1

Description

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P/00/011 Regulation 3.2 AUSTRALIA

Patents Act 1990

COMPLETE SPECIFICATION FORASTANDARDPATENT ORIGINAL TO BE COMPLETED BY APPLICANT

Invention Title: Aerosol Can

Name of Applicant: Pavilion Coating (M) Sdn. Bhd.

Address for Service: A.P.T. Patent and Trade Mark Attorneys PO Box 833, Blackwood, SA 5051

The following statement is a full description of this invention, including the best method of performing it known to me/us:

AEROSOL CAN

FIELD OF INVENTION The present invention relates to an aerosol can and more particularly, an aerosol can that comprises a cutting means which can eliminate circumferential wall of an inner compartment.

BACKGROUND OF THE INVENTION Aerosol can is a specialised container for storing and dispensing substances under pressure. Aerosol cans have been widely used in different fields of application for many years. The popularity of aerosol can is getting higher since such self-contained container or dispenser promotes an easy and convenient way for discharging aerosol product. In the existing prior art, there are mainly two types of aerosol can which are 1K (one-component) and 2K (two component) aerosol can. The main difference between 1K (one-component) and 2K (two component) aerosol can is 2K (two-component) aerosol can comprises an inner compartment for storing a secondary component substance. The secondary component substance can be a hardener or an activator.

To release the contents of inner compartment of the aerosol can, a specialized releasing means is required to eliminate a wall of inner compartment such that a primary component substance and secondary component substance can mix with each other and produce a final mixture product. In the existing 2K (two-component) aerosol can technology, the mechanism of the releasing means is more focused on breaking a bottom wall (cylindrical-shaped body of inner compartment) of inner compartment using a rod or any other appropriate pushing means which can eliminate the bottom wall of inner compartment under the application of pushing effort from a user. However, such technique could not ensure a uniform and great contact area between the primary component substance and secondary component substance since the contact area is focused at the bottom wall area of inner compartment.

On the other hand, using a cutting blade as releasing means in existing prior art for eliminating a circumferential wall of the inner compartment and releasing the secondary component substance requires the user to apply 3-step operation. At the first step, the user is required to pull the turning rod to the bottom end surface of the inner compartment. After the action of pulling, the user can initiate the turning and twisting action before shaking the aerosol can to mix the primary component substance and the secondary component substance. There is a risk of not pulling the turning rod until the bottom end surface of the inner compartment by a user to trigger the protrusion of cutting blade and touching the circumferential wall of the inner compartment for wall elimination purpose.

To overcome the abovementioned shortcomings, an alternative of increasing the contact area between the primary component substance and secondary component substance is eliminating the wall area of the inner compartment as much as possible so that the mixing process is more uniform, efficient and continuous. On the other hand, a simple and straightforward cutting mechanism which is easily operable and is able to efficiently eliminate the circumferential wall of the inner compartment by a user is desirable. A good mixing process may produce a higher quality of final mixture product. Therefore, an aerosol can that comprises a cutting means which can efficiently eliminate circumferential wall area of an inner compartment is disclosed in present invention.

SUMMARY OF THE INVENTION The present invention relates to an aerosol can.

According to the preferred embodiment of the present invention, the aerosol can comprises a body, a first disk and a second disk that are sealed hermetically at opposing ends of the body and a valve assembly which is fixedly mounted onto an annular boss of the first disk. An inner compartment having a body with one end closed and a distal end open, is removably mounted onto an annular boss of the second disk. A cutting means is fitted into an inner compartment. According to the present invention, the cutting means comprises a camshaft, a cutter means and a fastening means. The camshaft comprises a turning head passing through a central opening in a mounting cup that is provided with a seal. The cutter means comprises a housing that is provided with a recess. The recess fully encases a cam and a cam follower and the cam follower is provided with a sharp blade. Preferably, the sharp blade comprises a cutting point that is pointing away from the camshaft. The housing is supported within the mounting cup. The fastening means secures the camshaft and the cutter means to the mounting cup. When the turning head is rotated in either clockwise or anticlockwise, the camshaft follows, in so doing, drives the cam to push the cam follower radially outwards and hence forces the sharp blade against the inside surface of the inner compartment to pierce the inner compartment. With further rotation of the turning, the camshaft and hence the cam follower and the sharp blade will follow in the rotation to cut the inner compartment until complete severance.

In the present invention, the cutting means is interference fitted into the inner compartment.

Preferably, the camshaft is a unitary element provided with a cylindrical portion extending from the turning head, followed by a driving portion and a threaded portion. The camshaft passes through the mounting cup, in turn, through the cutter means, followed by the fastening means such that the driving portion engages with the cutter means.

According to the present invention, the cam is supported on the driving portion of the camshaft.

It should be noted that the cam follower is pivoted in the housing. It will be appreciated that the housing, the cam and the cam follower together are configured such that when the cam is rotated either clockwise or anticlockwise, the cam follower will always turn in a direction to push the sharp blade radially outwards.

Preferably, the fastening means is a set of conical washers, plain washers and self-locking nut configured to provide suitable axial compression on the seal.

Preferably, the driving portion of the camshaft of the camshaft comprises a cross section that is circular, polygonal, rosette, serrated or any other pattern which is deemed suitable.

The present invention is hereinafter fully described and illustrated in the accompanying descriptions and drawings, it being understood that various changes in the details may be made without departing from the scope of the invention or sacrificing any of the advantages of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be fully understood from the detailed description given herein below and the accompanying drawings which are given by way of illustrations only, and thus are not limitative of the present invention, wherein:

Fig. 1 shows a cross-sectional view of first embodiment of an aerosol can;

Fig. 2 shows a cross-sectional view of the second embodiment of the aerosol can;

Fig. 3 shows an exploded view of a cutting means of the aerosol can;

Fig. 4 shows a partial view of the cutting means of the aerosol can;

Fig. 5 shows a cross-sectional view of an inner compartment of the aerosol can;

Fig. 6 shows a cross-sectional view of the inner compartment of the aerosol can with a protruded sharp blade.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An aerosol can will be described in accordance with the accompanying drawings Fig. 1 - Fig. 6. Hereinafter, this specification will describe the present invention according to the preferred embodiments of the present invention. However, it is to be understood that limiting the description to the preferred embodiment of the invention is merely to facilitate discussion of the present invention and it is envisioned that those skilled in the art may devise various modifications and equivalents without departing from the scope of the appended claims.

According to the preferred embodiment of the present invention as shown in Fig. 1, an aerosol can (1) comprises a body (100), a first disk (102), a second disk (103), a valve assembly (300), an inner compartment (200) and a cutting means (500). In the present invention, the body (100) is configured for housing a primary component substance. Preferably, the body (100) of the aerosol can (1) is configured in cylindrical shape. It should be noted that the shape or configuration of the body (100) of the aerosol can (1) that can safely store the primary component substance may be altered. By way of example but not a limitation, the cylindrical-shaped body (100) of the aerosol can (1) is made of steel, tin, aluminium or any material which is deemed appropriate.

According to the present invention, the first disk (102) and the second disk (103) are preferably sealed hermetically at opposing ends of the cylindrical body (100). It should be noted that any other method of sealing the first disk (102) and the second disk (103) to the body (100) is possible for the present invention. In thefirst embodiment of present invention as shown in Fig. 1, the first disk (102) is protruding outwardly from the body (100) of the aerosol can (1) whereas the second disk (103) is protruding inwardly towards the body (100) of the aerosol can (1). In the second embodiment of present invention as shown in Fig. 2, the first disk (102) and the second disk (103) are both protruding outwardly from the body (100) of the aerosol can (1). It will be appreciated that bottom covers (106) are provided for covering the cutting means (500) and the valve assembly (300) before the cutting means (500) and the valve assembly (300) are put into implementation.

In the present invention as shown in Fig. 1, the valve assembly (300) comprises an actuating means (302), a mounting cup (304), a stem (306), a spring (308) and a dip tube (310). It will be appreciated that the valve assembly (300) is efficiently regulating and releasing a final mixture product from the body (100) of the aerosol can (1). By way of example but not a limitation, the actuating means (302) is a nozzle or any actuator which can regulate the flow of final mixture product from the body (100) of the aerosol can (1). In the present invention, the actuating means (302) acts as a cover of one end of the dip tube (310). It will be appreciated that the valve assembly (300) is fixedly mounted onto an annular boss of the first disk (102). Sealing agent may be applied to stabilize the position of the valve assembly (300). Preferably, the mounting cup (304) acts as a snap-fit medium for engaging the valve assembly (300) into the body (100) of the aerosol can (1).

According to the present invention, the inner compartment (200) comprises a body with one end closed and a distal end open, is removably mounted onto an annular boss of the second disk (103). Sealing agent may be applied to stabilize the position of the inner compartment (200). The compartment section of the inner compartment (200) is extending inwardly towards the body (100) of the aerosol can (1). In the present invention, the inner compartment (200) is configured for storing a secondary component substance. Preferably, the inner compartment (200) of the aerosol can (1) is configured in cylindrical shape. It should be noted that the shape or configuration of the inner compartment (200) of the aerosol can (1) that can safely store the secondary component substance may be altered. By way of example but not a limitation, the cylindrical-shaped inner compartment (200) of the aerosol can (1) is made of aluminium or any material which is deemed suitable. It will be appreciated that the hardness of material of the inner compartment (200) of the aerosol can (1) can be easily pierced and eliminated by the cutting means (500).

According to the preferred embodiment of the present invention, the cutting means (500) is fitted into an inner compartment (200). By way of example but not a limitation, the cutting means (500) is interference fitted into the inner compartment (200). In the present invention, as illustrated in Fig. 3, the cutting means (500) comprises a camshaft (508), a cutter means (510) and a fastening means (524). The camshaft (508) comprises a turning head (504) that passes through a central opening in a mounting cup (506) that is provided with a seal (518). The turning head (504) of the camshaft (508) is protruding outside the inner compartment (200). Preferably, the mounting cup (506) comprises an annular skirt portion which can hold the cutting means (500) in communication with a round neck flange (202) of the inner compartment (200). In the present invention, the camshaft (508) is a unitary element provided with a cylindrical portion (505) that is extending from the turning head (504), followed by a driving portion (507) and a threaded portion (509). By way of example but not a limitation, the driving portion (507) of the camshaft (508) comprises a cross section that is circular, polygonal, rosette, serrated or any other pattern which is deemed suitable. Preferably, the camshaft (508) passes through the mounting cup (506), in turn, through the cutter means (510), followed by the fastening means (518) such that the driving portion (507) engages with the cutter means (510). Referring to Fig. 2, the cutting means (500) is acting as a releasing means of the secondary component substance that is stored in the inner compartment (200) of the aerosol can (1).

In the preferred embodiment of the present invention, the cutter means (510) comprises a housing (516) that is provided with a recess (517) that fully encases a cam (512) and a cam follower (514) that is further provided with a sharp blade (502). Preferably, the housing (516) is supported within the mounting cup (506). By way of example but not a limitation, the cam (512) is configured in snail-shaped. When the turning head (504) is rotated either clockwise or anticlockwise, the camshaft (508) follows, in so doing, drives the cam (512) to push the cam follower (514) radially outwards and hence forces the sharp blade (502) to pierce the inner compartment (200). The protruded sharp blade (502) is illustrated in Fig. 4. With further rotation of the turning head (504), the camshaft (508) and hence the cam follower (514) and the sharp blade (502) will follow in the rotation to cut the inner compartment (200) until complete severance. The cam (512) and the cam follower (514) are supported on the camshaft (508) for adapting angular motion of the cutter means (510) with respect to the camshaft (508). In particular, the cam (512) is supported on the driving portion (507) of the camshaft (508). According to the present invention, the sharp blade (502) is attached at the cam follower (514) of the cutter means (510) and the sharp blade (502) comprises a cutting point that is pointing away from the camshaft (508). The tip of the sharp blade (502) is sitting flushed with the external side wall of the housing (516) before the sharp blade (502) is turned out by a user through the rotation of the turning head (504) of the cutting means (500). Preferably, the cutter means (510) is positioned distal most from the projection ending point of the camshaft (508) such that the widest circumferential wall area of the inner compartment (200) can be eliminated by the sharp blade (502) that attached at the cam follower (514) of the cutter means (510) and maximize the contact area between the primary component substance in the body (100) and the secondary component substance in the inner compartment (200). Preferably, the cam follower (514) is pivoted in the housing (516). The housing (516), the cam (512) and the cam follower (514) together are configured such that when the cam (512) is rotated either clockwise or anticlockwise, the cam follower (514) will always turn in a direction to push the sharp blade (502) radially outwards. It should be noted that such configuration is to reduce the step of pulling and pushing action on the turning head (504) of the cutting means (500) before the cutting action is initiated as implemented in the existing prior art invention. It will be appreciated that an orifice (520) is formed on the cam follower (514) of the cam assembly (510) for securing the position of the cam follower (514) at the housing (516). It will also be appreciated that a pivoting means (522) is provided at the recess (517) of the housing (516) for matingly engaging with the orifice (520) of the cam follower (514) of the cutter means (510).

In the present invention, the fastening means (524) secures the camshaft (508) and the cutter means (510) to the mounting cup (506). By way of example but not a limitation, the fastening means (524) is a set of conical washers, plain washers and self-locking nut configured to provide suitable axial compression on the seal (518).

To initiate the mixing process of the primary component substance in the body (100) and the secondary component substance in the inner compartment (200), a user must first turn the turning head (504) of the cutting means (500) in clockwise direction as shown in Fig. 5 and Fig. 6. Fig. 5 illustrates the sharp blade (502) is accommodated within the recess (517) of the housing (516) before the sharp blade (502) is turned out by a user through the rotation of the turning head (504) of the cutting means (500) whereas the Fig. 6 illustrates the sharp blade (502) is protruding out from the side wall of the internal recess of the housing (516) after the sharp blade (502) is turned out by a user through the rotation of the turning head (504) of the cutting means (500). It should be noted that the turning direction may be altered according to the variations of the configurations of the cutting means (500), the body (100) of the aerosol can (1) and the inner compartment (200) of the aerosol can (1). It will be appreciated that the turning action of the cutting assembly (500) will trigger the movement of the sharp blade (502) since the sharp blade (502) is rotating integrally with the cutting means (500). The distance between the sharp blade (502) and the circumferential wall of the inner compartment (200) is sufficiently close such that the circumferential wall of the inner compartment (200) could be pierced and eliminated easily. It should also be noted that once the circumferential wall of inner compartment (200) has been eliminated, the user is required to shake the aerosol can (1) so that the primary component substance in the body (100) and the secondary component substance in the inner compartment (200) can be uniformly mixed with each other to provide a desired quality of final mixture product. Referring again to Fig. 1 and Fig. 2, a plurality of rolling balls (600) is provided for mixing the primary component substance and the secondary component substance during the shaking process.

The foregoing description is considered as illustration of the principles of the invention. Furthermore, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

Claims

CLAIMS 1. An aerosol can (1) comprising: a body (100); a first disk (102) and a second disk (103) sealed hermetically at opposing ends of the body (100); a valve assembly (300) fixedly mounted onto an annular boss of the first disk (102); characterized by an inner compartment (200), having a body with one end closed and a distal end open, is removably mounted onto an annular boss of the second disk (103); a cutting means (500) that is fitted into the inner compartment (200), the cutting means (500) comprises: a camshaft (508) having a turning head (504) passing through a central opening in a mounting cup (506) that is provided with a seal (518); a cutter means (510) having a housing (516) that is provided with a recess (517) that fully encases a cam (512) and a cam follower (514) that is further provided with a sharp blade (502) with a cutting point pointing away from the camshaft (508), the housing (516) being supported within the mounting cup (506); and a fastening means (524) securing the camshaft (508) and the cutter means (510) to the mounting cup (506); such that when the turning head (504) is rotated, the camshaft (508) follows, in so doing, drives the cam (512) to push the cam follower (514) radially outwards hence forces the sharp blade (502) against the inside surface of the inner compartment (200) to pierce the inner compartment (200); and with further rotation of the turning head (504), the camshaft (508) and hence the cam follower (514) and the sharp blade (502) will follow in the rotation to cut the inner compartment (200) until complete severance.

2. The aerosol can (1) as claimed in Claim 1, wherein the cutting means (500) is interference fitted into the inner compartment (200).

3. The aerosol can (1) as claimed in Claim 1, wherein the camshaft (508) is a unitary element provided with a cylindrical portion (505) extending from the turning head (504), followed by a driving portion (507) and a threaded portion (509), the camshaft (508) passes through the mounting cup (506) and the seal (518), in turn, through the cutter means (510), followed by the fastening means (518) such that the driving portion (507) engages with the cutter means (510).

4. The aerosol can (1) as claimed in Claim 1, wherein the cam (512) is supported on the driving portion (507) of the camshaft (508).

5. The aerosol can (1) as claimed in Claim 1, wherein the cam follower (514) is pivoted in the housing (516), and the housing (516), the cam (512) and the cam follower (514) together are configured such that when the cam (512) is rotated either clockwise or anticlockwise, the cam follower (514) will always turn in a direction to push the sharp blade (502) radially outwards.

6. The aerosol can (1) as claimed in Claim 1, wherein the fastening means (524) is a set of conical washers, plain washers and self-locking nut that configured to provide suitable axial compression on the seal (518).

7. The aerosol can (1) as in Claim 3, wherein the driving portion (507) of the camshaft (508) comprises a cross section that is circular, polygonal, rosette, serrated or any other pattern which is deemed suitable.

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