US2985342A - Valve container for pressurized materials and method of sealing the same - Google Patents
Valve container for pressurized materials and method of sealing the same Download PDFInfo
- Publication number
- US2985342A US2985342A US778845A US77884558A US2985342A US 2985342 A US2985342 A US 2985342A US 778845 A US778845 A US 778845A US 77884558 A US77884558 A US 77884558A US 2985342 A US2985342 A US 2985342A
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- Prior art keywords
- valve
- channel
- housing
- closure
- sealing
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- 238000000034 method Methods 0.000 title description 12
- 239000000463 material Substances 0.000 title description 11
- 238000007789 sealing Methods 0.000 title description 10
- 239000000945 filler Substances 0.000 description 17
- 239000000443 aerosol Substances 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 239000002184 metal Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000004479 aerosol dispenser Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/38—Details of the container body
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49808—Shaping container end to encapsulate material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49915—Overedge assembling of seated part
- Y10T29/49917—Overedge assembling of seated part by necking in cup or tube wall
- Y10T29/49918—At cup or tube end
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49925—Inward deformation of aperture or hollow body wall
- Y10T29/49934—Inward deformation of aperture or hollow body wall by axially applying force
Definitions
- VALVE CONTAINER FOR PRESSURIZED MATERIALS AND METHOD OF SEALING THE SAME Filed Dec. 8, 1958 3 Sheets-Sheet 3 F L E INVENTOR E 35H Fla/.420 F am BY I a is ATTORNEY United States Patent VALVE CONTAINER FOR PRESSURIZED MATE- RIALS AND METHOD OF SEALING THE SAME John Richard Focht, Yonkers, N.Y., assignor to Precision Valve Corporation, Yonkers, N.Y., a corporation of New York Filed Dec. 8, 1958, Ser. No. 778,845
- This invention relates to manually operable, valve equipped, pressurized containers, such as are used for example, for aerosol products, and is directed to certain salient parts of such a construction, as well as a method of applying the valve structure to the container and the sealing of such container, which is generally in the form of a metal can.
- the filler first filled the can body with the material which was to be packaged therein and was required thereafter to permanently attach the top closure to the can in such a manner as to provide between these parts a hermetic seal.
- This operation of attaching the top closure to effect sealing of the can requires rather complicated and expensive machinery and it had to be carried out with great care and skill, otherwise leakage of pressure from the pressurized container resulted thru the joint thus made.
- Leaky cans cannot satisfactorily function. They have to be discarded and constituted a loss to the filler for there is no satisfactory way to reclaim these cans or the material contained therein.
- the object of the present invention is to eliminate the necessity for the foregoing conventional procedure and to make it possible for the filler to more efficiently carry out his operations of filling and sealing the can through the use of very simple form of structure and apparatus and with practically no failures in the production of hermetic seals between those parts which he is required to assemble to produce the complete end product.
- the valve per se is mounted within a novel housing of molded plastic and constitutes the valve unit of this invention. It is so made as to be ready for attachment to a finished can by the filler, through the employment of extremely simple apparatus and in an eflicient and leakproof manner.
- the can manufacturer supplies the can, to the filler ready for the attachment of such unit. If this can is provided with a top closure, this closure is sealed by the can manufacturer to the can.
- the can may be of the one-piece variety which requires no joint other than that between the unit and the can, as will be hereinafter more fully explained. In any case the can is provided with a top opening of such size and form that it is ready to receive the valve unit after the filling has taken place.
- the filling opening has an up- Wardly flared margin which while in this flared condition 2,985,342 Patented May 23, 1961 is of such size that it may receive the valve unit but it is later adapted to be depressed to contract the diameter of the opening for the purpose of tightly gripping the unit to permanently attach it to the can and form therewith a hermetically sealed joint.
- This procedure permits the filler to fill the can, then introduce the valve unit into the top filling opening, and thereafter apply suflicient pressure to the valve unit to seal the unit to the can.
- Fig. l is a central diametric section of a valve housing embodying the present invention with a valve mounted therein and shown in elevation.
- Fig. 2 shows a can with a top closure hermetically sealed to the side wall of the can and with a flared central filling opening ready to receive the valve unit shown in Fig. 1.
- Fig. 3 shows the parts of Figs. 1 and 2 brought together, but prior to permanently attaching the valve unit to the can.
- Fig. 4 is a view similar to Fig. 3, but showing the parts in finally assembled relation.
- Fig. 5 shows a type of can wherein a cup type of closure is associated with the can body in lieu of the larger top closure shown in the preceding figures.
- Fig. 6 shows a modified form of can, i.e., a one-piece can embodying the present invention.
- Fig. 7 is a fragmental radial section showing a portion of the valve housing of the valve unit and illustrating how the slot shown in the preceding views may be formed by a relatively small bead extending circumferentially of the housing.
- Fig. 8 is a section corresponding to Fig. 7, but showing a structure wherein the plastic housing is initially devoid of a circumferential channel but adapted to be indented by the edge of the can closure to form a retaining channel, as shown in Fig. 9.
- Fig. 9 is a fragmental radial section showing the structure of Fig. 8 attached to the can.
- Fig. 10 is a central section illustrating prior practice, shown for comparative purposes to illustrate the advance and improvement of the present invention thereover.
- Fig. 10 which is illustrative of prior practice, 1 designates the body of the can and 2 the can closure. It has been conventional for the manufacturer of valves to mount a complete valve assembly 3, including its valve stem 4 and dispensing button 5, within an upstanding boss 6 stamped from the central portion of the can closure 2. The valve manufacturer, having thus assembled the valve parts and top closure 2, has shipped these in bulk to the filler. On the other hand the can manufacturer, having made the can body 1, ships these can bodies in bulk to the filler.
- valve unit 9 embodies a valve housing 10 in which a valve assembly V is mounted in complete and finished condition for manual operation.
- the valve assembly shown is of the character disclosed in Patent No. 2,631,814, granted to Robert H. Abplanalp, on March 17, 1953. It is a highly efficient form of valve assembly, but it will be understood that any other appropriate valve mechanism might be used without departing from this invention, so long as its housing 10' is adapted to be gripped by the margin of the filler opening as presently described.
- the housing 10 is preferably in the form of a plastic molding sufliciently hard so that it cannot be appreciably bent or deformed. In fact it should be quite stiff and hard and should possess such characteristics as are inherent in nylon or some other relatively hard plastic. In practice, the walls of the channel 11 must be so rigid that they cannot be deformed to release the housing from the can after the parts have been assembled.
- the housing 10 is preferably provided with a central hub-like portion 10a in the circumference of which the channel 11 is formed and which is provided with a laterally projecting flange 10b, the under side 100 of which serves as a limiting abutment.
- a protecting or stacking cap may be fitted over either the periphery of the central portion 10a or the periphery of the flange 10b, according to the type of manually operable push button or dispenser cap to be used on the valve stem, or according to the desires of the customer.
- a notch 10d may be formed in the periphery of the flange to assist it holding a stacking cap against inadvertent displacement.
- a dip tube 10s is attached to housing in the conventional way.
- the can body 12, shown in Fig. 2 may be of any shape provided that it has a top closure 13 hermetically sealed to the side wall of the can by a permanent joint 14.
- This top closure is provided with a central filling opening 15 the margin 16 of which is flared upwardly as shown in Fig; 2.
- the diameter of the opening 15, as shown in this figure, should be at least as great as the dimensio'n X which indicates the diameter of the mouth 11a of the channel 11 of the valve unit 9.
- This opening should be of such diameter that the flattening of the flared margin of the upper top opening will decrease the diameter of the opening 15 to approximately the diameter Y of the base of the channel 11.
- Figs. 1-4 inclusive show a can of one conventional type having the usual dome shaped closure as large as the diameter of the can body.
- the invention may also be employed in connection with that type of can shown in Fig. 5, wherein the can closure is in the form of a cup 13a of lesser diameter.
- the same principle and mode of operation applies irrespective of the type of closure employed.
- the present invention may also be applied to one piece cans of the drawn type.
- these cans have generally been provided with a closure in the form of a cup, such as shown in Fig. 5.
- a closure in the form of a cup such as shown in Fig. 5.
- the employing of such a cup is rendered unnecessary according to this invention if the top opening is formed as'shown in Fig. 6 with its margin 16 flared upwardly as shown in this figure, so that the inner margin of the flared portion has a diameter large enough to closely receive the valve housing of the valve unit.
- Figs. 14 inclusive the circumferential channel is shown as molded into the body of the housing.
- the same result may be obtained, as shown in Fig. 7, by molding on the housing a circumferentially projecting bead 18 to forrn between the bead and the limiting abutment 19 a channel 20 corresponding to the channel 11.
- a channel is pre-formed to receive the edge of the filling opening.
- no channel is shownbut there is a limiting abutment 21.
- the can is formed with the raised margin around the filling opening as hereinbefore described and after the valve unit has been introduced into the filler opening as stated, downward pressure upon the valve unit will cause the flare of the can to be decreased sufliciently to bite into the surface 22a of the housing and form therein a depressed scaling channel 22 asshown in Fig. 9.
- the seal thus producedwill function satisfactorily if the internal pressures in the can are not too great but the structures with the pre-formation of an actual channel in the housing as shown in the preceding figures are preferred for they are more reliable and safer at conventional pressures.
- the cans which are used for packaging are made of metal or at least have metal closures.
- the metal employed, while being malleable, must be sufiiciently strong to hold the internal pressures to which the can is subjected and, when so constituted, will permit bending of the flared top filling opening in the can from the condition of Fig. 2 to the condition of Fig. 4 without the application of excessive pressure on the valve unit.
- it When bent into the con dition of Fig. 4, it will permanently secure the valve unit to the can so that these parts cannot thereafter'be separated nor can they be sprung under ordinary usage into a condition wherein leakage will result.
- the cans and closures shown in the drawings simulate in general configuration, conventional shapes but this shaping may be changed without departing from this invention.
- the method and structure of this invention should not be confused with those prior disclosures wherein a relatively soft and flexible element of some sort, provided with a groove or the like, must be flexed, bent or distorted in order to introduce it into a rigid opening of permanently fixed dimensions, after which such element must spring back to its original shape to efiect its attachment in said openings.
- Such structures cannot be safely employed in the packaging of aerosols and other pressurized materials, where the pressures may exceed 100 pounds p.s.i.
- the valve unit of this invention is relatively rigid. It is not flexible and when attached to the can cannot be displaced therefrom for it is positively locked thereto.
- An aerosol dispenser comprising: an aerosol container having a filling opening and, in said opening an aerosol valve having a valve housing provided with a peripheral channel in which the edge of the filling opening has a compression fit extending continuously around said channel with sufiicient inward radial force to produce an autogenous hermetic seal therewith, said housing being of plastic material sufficiently hard and inflexible that it cannot be appreciably bent or deformed to remove it from or replace it in said filling opening.
Description
May 23, 1961 J. R. FOCHT 2,985,342
VALVE CONTAINER FOR PRESSURIZED MATERIALS AND METHOD OF SEALING THE SAME Filed Dec. 8, 1958 3 Sheets-Sheet 1 INVENTOR Jaw PIG-MED F6047 F53 QMBIMM ATTORNEY I May 23, 1961 J. R. FOCHT 2,985,342
VALVE CONTAINER FOR PRESSURIZED MATERIALS AND METHOD OF SEALING THE SAME Filed Dec. 8, 1958 3 Sheets-Sheet 2 0 WI u 44 {3 I a I l I l l I I I I I I I I I I I 5 l INVENTOR J Jm/ E/c/mxea F0 CHT ATTORNEY May 23, 1961 FOCHT 2,985,342
VALVE CONTAINER FOR PRESSURIZED MATERIALS AND METHOD OF SEALING THE SAME Filed Dec. 8, 1958 3 Sheets-Sheet 3 F L E INVENTOR E 35H Fla/.420 F am BY I a is ATTORNEY United States Patent VALVE CONTAINER FOR PRESSURIZED MATE- RIALS AND METHOD OF SEALING THE SAME John Richard Focht, Yonkers, N.Y., assignor to Precision Valve Corporation, Yonkers, N.Y., a corporation of New York Filed Dec. 8, 1958, Ser. No. 778,845
2 Claims. (Cl. 222394) This invention relates to manually operable, valve equipped, pressurized containers, such as are used for example, for aerosol products, and is directed to certain salient parts of such a construction, as well as a method of applying the valve structure to the container and the sealing of such container, which is generally in the form of a metal can.
Heretofore it has been the practice in the aerosol field to permanently mount the valve assembly in an opening in the top closure of the can before said closure was attached to the can body. This closure was in some cases in the form of a stamping of substantially the same diameter as the can body. In other cases the upper portion of the can body was drawn in to a lesser diameter and was provided therein with an opening which was adapted to be sealed by a top closure in the form of a cup. The can body, fabricated by one manufacturer Without a closure, was shipped to a so-called filler. The top closure with valve assembly mounted thereon was shipped to the filler by a valve manufacturer. The filler first filled the can body with the material which was to be packaged therein and was required thereafter to permanently attach the top closure to the can in such a manner as to provide between these parts a hermetic seal. This operation of attaching the top closure to effect sealing of the can requires rather complicated and expensive machinery and it had to be carried out with great care and skill, otherwise leakage of pressure from the pressurized container resulted thru the joint thus made. Leaky cans cannot satisfactorily function. They have to be discarded and constituted a loss to the filler for there is no satisfactory way to reclaim these cans or the material contained therein.
The object of the present invention is to eliminate the necessity for the foregoing conventional procedure and to make it possible for the filler to more efficiently carry out his operations of filling and sealing the can through the use of very simple form of structure and apparatus and with practically no failures in the production of hermetic seals between those parts which he is required to assemble to produce the complete end product.
These objects are accomplished in the following manner. The valve per se is mounted within a novel housing of molded plastic and constitutes the valve unit of this invention. It is so made as to be ready for attachment to a finished can by the filler, through the employment of extremely simple apparatus and in an eflicient and leakproof manner. The can manufacturer supplies the can, to the filler ready for the attachment of such unit. If this can is provided with a top closure, this closure is sealed by the can manufacturer to the can. However, the can may be of the one-piece variety which requires no joint other than that between the unit and the can, as will be hereinafter more fully explained. In any case the can is provided with a top opening of such size and form that it is ready to receive the valve unit after the filling has taken place. The filling opening has an up- Wardly flared margin which while in this flared condition 2,985,342 Patented May 23, 1961 is of such size that it may receive the valve unit but it is later adapted to be depressed to contract the diameter of the opening for the purpose of tightly gripping the unit to permanently attach it to the can and form therewith a hermetically sealed joint. This procedure permits the filler to fill the can, then introduce the valve unit into the top filling opening, and thereafter apply suflicient pressure to the valve unit to seal the unit to the can.
By the procedure stated, the work of the filler is very greatly facilitated. He may employ any simple appropriate pressure mechanism and he is absolutely assured of the hermetic seal which is of prime importance when producing pressure packed materials.
Features of the invention, other than those adverted to, will be apparent from the hereinafter detailed description and appended claims, when read in conjunction with the accompanying drawings.
The accompanying drawings illustrate one practical embodiment of the invention, but the construction therein shown is to be understood as illustrative, only, and not as defining the limits of the invention.
Fig. l is a central diametric section of a valve housing embodying the present invention with a valve mounted therein and shown in elevation.
Fig. 2 shows a can with a top closure hermetically sealed to the side wall of the can and with a flared central filling opening ready to receive the valve unit shown in Fig. 1.
Fig. 3 shows the parts of Figs. 1 and 2 brought together, but prior to permanently attaching the valve unit to the can.
Fig. 4 is a view similar to Fig. 3, but showing the parts in finally assembled relation.
Fig. 5 shows a type of can wherein a cup type of closure is associated with the can body in lieu of the larger top closure shown in the preceding figures.
Fig. 6 shows a modified form of can, i.e., a one-piece can embodying the present invention.
Fig. 7 is a fragmental radial section showing a portion of the valve housing of the valve unit and illustrating how the slot shown in the preceding views may be formed by a relatively small bead extending circumferentially of the housing.
Fig. 8 is a section corresponding to Fig. 7, but showing a structure wherein the plastic housing is initially devoid of a circumferential channel but adapted to be indented by the edge of the can closure to form a retaining channel, as shown in Fig. 9.
Fig. 9 is a fragmental radial section showing the structure of Fig. 8 attached to the can.
Fig. 10 is a central section illustrating prior practice, shown for comparative purposes to illustrate the advance and improvement of the present invention thereover.
Referring first to Fig. 10, which is illustrative of prior practice, 1 designates the body of the can and 2 the can closure. It has been conventional for the manufacturer of valves to mount a complete valve assembly 3, including its valve stem 4 and dispensing button 5, within an upstanding boss 6 stamped from the central portion of the can closure 2. The valve manufacturer, having thus assembled the valve parts and top closure 2, has shipped these in bulk to the filler. On the other hand the can manufacturer, having made the can body 1, ships these can bodies in bulk to the filler. can finds it necessary to employ special expensive machinery to wipe or spin the peripheral flange 7 of the can top closure 2 over and under the flange 8 of the can body The filler after filling the V In carrying out the present invention, the valvemanufacturer makes a valve unit 9, shown in Fig. 1. This valve unit 9 embodies a valve housing 10 in which a valve assembly V is mounted in complete and finished condition for manual operation. For the purpose of'illustration, the valve assembly shown is of the character disclosed in Patent No. 2,631,814, granted to Robert H. Abplanalp, on March 17, 1953. It is a highly efficient form of valve assembly, but it will be understood that any other appropriate valve mechanism might be used without departing from this invention, so long as its housing 10' is adapted to be gripped by the margin of the filler opening as presently described.
The housing 10 is preferably in the form of a plastic molding sufliciently hard so that it cannot be appreciably bent or deformed. In fact it should be quite stiff and hard and should possess such characteristics as are inherent in nylon or some other relatively hard plastic. In practice, the walls of the channel 11 must be so rigid that they cannot be deformed to release the housing from the can after the parts have been assembled.
In practice the housing 10 is preferably provided with a central hub-like portion 10a in the circumference of which the channel 11 is formed and which is provided with a laterally projecting flange 10b, the under side 100 of which serves as a limiting abutment. With this construction a protecting or stacking cap may be fitted over either the periphery of the central portion 10a or the periphery of the flange 10b, according to the type of manually operable push button or dispenser cap to be used on the valve stem, or according to the desires of the customer. A notch 10d may be formed in the periphery of the flange to assist it holding a stacking cap against inadvertent displacement. A dip tube 10s is attached to housing in the conventional way.
The can body 12, shown in Fig. 2, may be of any shape provided that it has a top closure 13 hermetically sealed to the side wall of the can by a permanent joint 14. This top closure is provided with a central filling opening 15 the margin 16 of which is flared upwardly as shown in Fig; 2. The diameter of the opening 15, as shown in this figure, should be at least as great as the dimensio'n X which indicates the diameter of the mouth 11a of the channel 11 of the valve unit 9. This opening however, should be of such diameter that the flattening of the flared margin of the upper top opening will decrease the diameter of the opening 15 to approximately the diameter Y of the base of the channel 11.
After the filler has filled the can which has been supplied to' him with the top closure 13 sealed to the can body 12, said filler introduces the lower portion of the valve unit 9 into the filling opening 15 of the can until the limiting abutment or shoulder 100 of the housing 1b seats on the edge of the filling opening and the mouth 11a of the channel 11 registers with the edge of said opening, as shown in Fig. 3. He thereafter applies downward pressure to the valve unit, as indicated by the arrows '17 in Figs. 2 and 4, said pressure being suflicient to bend downwardly the marginally flared portion 16. As this operation proceeds, the diameter of the edge of the filling opening is decreased and said edge is caused to enter into the channel 11 until it comes to a firm seat at the base of the channel, as shown in Fig. 4.
Experience has shown that through the application of such pressure with properly proportioned parts, a hermetic seal will be produced between the edge of the filling opening of the can closure and the base of the channel 11, for when employing even hard plastics, there is always a sufiicient yield therein to compensate for slight irregularities in such edge and cause the edge to tightly grip the plastic and form a seal of the character stated. Although experience has shown that a gasket is unnecessary to form a seal of this kind, such a gasket may be employed if desired, without departing from this invention.
Figs. 1-4 inclusive show a can of one conventional type having the usual dome shaped closure as large as the diameter of the can body. The invention may also be employed in connection with that type of can shown in Fig. 5, wherein the can closure is in the form of a cup 13a of lesser diameter. The same principle and mode of operation applies irrespective of the type of closure employed.
The present invention may also be applied to one piece cans of the drawn type. Heretofore these cans have generally been provided with a closure in the form of a cup, such as shown in Fig. 5. However, the employing of such a cup is rendered unnecessary according to this invention if the top opening is formed as'shown in Fig. 6 with its margin 16 flared upwardly as shown in this figure, so that the inner margin of the flared portion has a diameter large enough to closely receive the valve housing of the valve unit. After this type of can is filled and the housing placed to project into the can as in the preceding figures, downward pressure on the housing will decrease the flare of the margin 16 from the full line position into the dotted line position wherein it will grip the valve housing with a hermetic seal and permanently mount the valve unit on the can.
In Figs. 14 inclusive the circumferential channel is shown as molded into the body of the housing. The same result may be obtained, as shown in Fig. 7, by molding on the housing a circumferentially projecting bead 18 to forrn between the bead and the limiting abutment 19 a channel 20 corresponding to the channel 11.
In the forms of the invention thus far described, a channel is pre-formed to receive the edge of the filling opening. However, when using moldings of fairly hard plastic, such as nylon, it is possible to carry out the invention without a pre-formed channel. In Fig. 8, no channel is shownbut there is a limiting abutment 21. The can is formed with the raised margin around the filling opening as hereinbefore described and after the valve unit has been introduced into the filler opening as stated, downward pressure upon the valve unit will cause the flare of the can to be decreased sufliciently to bite into the surface 22a of the housing and form therein a depressed scaling channel 22 asshown in Fig. 9. The seal thus producedwill function satisfactorily if the internal pressures in the can are not too great but the structures with the pre-formation of an actual channel in the housing as shown in the preceding figures are preferred for they are more reliable and safer at conventional pressures.
The cans which are used for packaging are made of metal or at least have metal closures. The metal employed, while being malleable, must be sufiiciently strong to hold the internal pressures to which the can is subjected and, when so constituted, will permit bending of the flared top filling opening in the can from the condition of Fig. 2 to the condition of Fig. 4 without the application of excessive pressure on the valve unit. When bent into the con dition of Fig. 4, it will permanently secure the valve unit to the can so that these parts cannot thereafter'be separated nor can they be sprung under ordinary usage into a condition wherein leakage will result. The cans and closures shown in the drawings simulate in general configuration, conventional shapes but this shaping may be changed without departing from this invention.
By the foregoing invention one of the most troublesome aspects of pressure packaging material is overcome. The work of the filler is materially reduced and his cost of packaging is materially lessened and his discards are practically nil. Moreover, the resulting package will withstand relatively higher continuous internal gaseous pressures such are required for aerosol and inert gaseous pressure dispensers. This it will do without leakage and in a perfectly safe manner.
The method and structure of this invention'should not be confused with those prior disclosures wherein a relatively soft and flexible element of some sort, provided with a groove or the like, must be flexed, bent or distorted in order to introduce it into a rigid opening of permanently fixed dimensions, after which such element must spring back to its original shape to efiect its attachment in said openings. Such structures cannot be safely employed in the packaging of aerosols and other pressurized materials, where the pressures may exceed 100 pounds p.s.i. The valve unit of this invention is relatively rigid. It is not flexible and when attached to the can cannot be displaced therefrom for it is positively locked thereto.
The foregoing detailed description sets forth the invention in its preferred practical forms, but the invention is to be understood as fully commensurate with the appended claims.
Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent is:
1. Method of hermetically sealing an aerosol container having a permanently configurated side wall, a permanently configurated bottom wall and a top wall having therein a filling opening, all parts of which top wall are permanently configurated except the margin of the filling opening which for the time being is upwardly flared, the entire container being hermetically sealed except for the filling opening in the top wall, said method comprising the following steps, namely: inserting into the filling opening a valve unit having a housing provided with a peripheral channel and of plastic material so hard and non-flexible that it cannot be appreciably bent or deformed, positioning said valve 'unit so that said peripheral channel is in registration with the inner edge of the filling opening, and then applying downward pressure to the upwardly flared margin of the filling opening to bend it downwardly and diminish the diameter of said opening and force its edge into continuous contact with the interior of said channel with sufficient force to produce an autogenous hermetic seal therewith and thus complete the hermetic sealing of the container.
2. An aerosol dispenser comprising: an aerosol container having a filling opening and, in said opening an aerosol valve having a valve housing provided with a peripheral channel in which the edge of the filling opening has a compression fit extending continuously around said channel with sufiicient inward radial force to produce an autogenous hermetic seal therewith, said housing being of plastic material sufficiently hard and inflexible that it cannot be appreciably bent or deformed to remove it from or replace it in said filling opening.
References Cited in the file of this patent UNITED STATES PATENTS 1,249,948 Gruber Dec. 11, 1917 1,579,875 Lundberg Apr. 6, 1926 2,185,191 Gray et a1. Jan. 2, 1940 2,405,201 Franck Aug. 6, 1946 2,733,842 Abplanalp Feb. 7, 1956 2,744,666 Jacobs et al May 8, 1956 2,746,647 Etford et al. May 22, 1956 2,829,806 Tedaldi Apr. 8, 1958 2,854,176 Edwards Sept. 30, 1958 2,868,419 Casey Jan. 13, 1959 2,930,170 Holsman et a1 Mar. 29, 1960
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL245714D NL245714A (en) | 1958-12-08 | ||
NL104576D NL104576C (en) | 1958-12-08 | ||
US778845A US2985342A (en) | 1958-12-08 | 1958-12-08 | Valve container for pressurized materials and method of sealing the same |
DEP23941A DE1260391B (en) | 1958-12-08 | 1959-11-24 | Container for pressurized filling material with a closing and removal part placed on after filling |
ES0253770A ES253770A1 (en) | 1958-12-08 | 1959-11-27 | Valve container for pressurized materials and method of sealing the same |
CH8141059A CH379420A (en) | 1958-12-08 | 1959-12-03 | Method for airtight mounting of a spray head on a container for a pressurized medium |
FR812023A FR1241695A (en) | 1958-12-08 | 1959-12-03 | Method of sealing a dispenser on a container containing a pressurized fluid |
GB41426/59A GB879631A (en) | 1958-12-08 | 1959-12-07 | Method of sealing valve assemblies to containers for pressurized material, and pressurized containers with valve assemblies hermetically sealed thereto |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US778845A US2985342A (en) | 1958-12-08 | 1958-12-08 | Valve container for pressurized materials and method of sealing the same |
Publications (1)
Publication Number | Publication Date |
---|---|
US2985342A true US2985342A (en) | 1961-05-23 |
Family
ID=25114567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US778845A Expired - Lifetime US2985342A (en) | 1958-12-08 | 1958-12-08 | Valve container for pressurized materials and method of sealing the same |
Country Status (7)
Country | Link |
---|---|
US (1) | US2985342A (en) |
CH (1) | CH379420A (en) |
DE (1) | DE1260391B (en) |
ES (1) | ES253770A1 (en) |
FR (1) | FR1241695A (en) |
GB (1) | GB879631A (en) |
NL (2) | NL245714A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3270924A (en) * | 1963-09-19 | 1966-09-06 | Kitabayashi Seiichi | Mounting caps for aerosol dispenser |
US3327381A (en) * | 1964-02-15 | 1967-06-27 | Hatsuta Mfg Co Ltd | Method of forming a foam fire-extin-guisher including deep drawing the tank body |
US3337946A (en) * | 1963-03-19 | 1967-08-29 | Lamson & Sessions Co | Method of mounting fasteners |
US3368591A (en) * | 1964-11-25 | 1968-02-13 | Zerbetto Michele | Fluid or liquid gas spray assembled with transparent graduated container and device for recharging and discharging the fluid into another container |
US3371408A (en) * | 1964-07-09 | 1968-03-05 | Cie Des Raccords And Robinets | Method of manufacturing hose joint elements |
US3845888A (en) * | 1971-05-07 | 1974-11-05 | Precision Valve Corp | Snap-in valve |
US3916496A (en) * | 1972-11-24 | 1975-11-04 | Fmc Corp | Valve assembly |
US4494898A (en) * | 1981-04-23 | 1985-01-22 | Metal Box P.L.C. | Mounting plastics members in openings in sheet metal members |
US4811868A (en) * | 1986-09-12 | 1989-03-14 | Tokai Corporation | Valve for aerosol container to dispense a given amount of aerosol |
CH687698A5 (en) * | 1994-07-13 | 1997-01-31 | Alusuisse Lonza Services Ag | Behaelter for delivering a filling. |
US20060144776A1 (en) * | 2005-01-05 | 2006-07-06 | Alcavis International, Inc. | Manual dialyzer header cleaning device |
US20090014679A1 (en) * | 2007-07-13 | 2009-01-15 | Precision Valve Corporation | Plastic aerosol valve and method of assembly, mounting and retention |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4792067B1 (en) * | 1985-05-13 | 1999-02-16 | Aptargroup Inc | Mounting cup |
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US1249948A (en) * | 1914-06-25 | 1917-12-11 | Hydraulic Pressed Steel Company | Process of uniting articles to sheet-metal supports. |
US1579875A (en) * | 1924-03-24 | 1926-04-06 | Briggs Mfg Co | Snap-on nut |
US2185191A (en) * | 1937-08-28 | 1940-01-02 | Chester E Gray | Method of and apparatus for filling containers |
US2405201A (en) * | 1942-08-29 | 1946-08-06 | Imp Brass Mfg Co | Method of forming closed metal capsules |
US2733842A (en) * | 1956-02-07 | abplanalp | ||
US2744666A (en) * | 1952-05-28 | 1956-05-08 | Jacobs William | Dispenser with frictionally interfitting parts in which a closure member is rotatable about an axis |
US2746647A (en) * | 1950-07-27 | 1956-05-22 | Bridgeport Brass Co | Container with closure and dispensing valve |
US2829806A (en) * | 1953-11-04 | 1958-04-08 | Dev Res Inc | Dispensing valve for gas pressure containers |
US2854176A (en) * | 1955-10-19 | 1958-09-30 | Illinois Tool Works | Dispensing valve assembly |
US2868419A (en) * | 1956-12-04 | 1959-01-13 | Jr William D Casey | Pressurized container closure |
US2930170A (en) * | 1954-03-29 | 1960-03-29 | Aseptic Food Fillers Inc | Means and method for aseptic packaging |
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DE836149C (en) * | 1950-05-26 | 1952-04-10 | Mauser Kg | Bung lock |
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GB747794A (en) * | 1954-03-02 | 1956-04-11 | Nat Dairy Res Lab Inc | Improvements in closures for containers |
US2806638A (en) * | 1954-08-12 | 1957-09-17 | Z And W Machine Products Inc | Release valve for pressurized containers |
DE1727930U (en) * | 1954-10-29 | 1956-08-09 | Plastic Union As | ELASTIC CLOSURE MADE OF PLASTIC FOR PACKAGING, THE CONTENTS OF WHICH SHOULD BE CONSUMED IN PART. |
GB781685A (en) * | 1955-04-22 | 1957-08-21 | Continental Can Co | Improvements in or relating to pouring devices for containers |
DE1736843U (en) * | 1956-10-25 | 1956-12-27 | Teves Kg Alfred | PLUG CAP FOR REFILL CONTAINER. |
-
0
- NL NL104576D patent/NL104576C/xx active
- NL NL245714D patent/NL245714A/xx unknown
-
1958
- 1958-12-08 US US778845A patent/US2985342A/en not_active Expired - Lifetime
-
1959
- 1959-11-24 DE DEP23941A patent/DE1260391B/en active Pending
- 1959-11-27 ES ES0253770A patent/ES253770A1/en not_active Expired
- 1959-12-03 CH CH8141059A patent/CH379420A/en unknown
- 1959-12-03 FR FR812023A patent/FR1241695A/en not_active Expired
- 1959-12-07 GB GB41426/59A patent/GB879631A/en not_active Expired
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US2733842A (en) * | 1956-02-07 | abplanalp | ||
US1249948A (en) * | 1914-06-25 | 1917-12-11 | Hydraulic Pressed Steel Company | Process of uniting articles to sheet-metal supports. |
US1579875A (en) * | 1924-03-24 | 1926-04-06 | Briggs Mfg Co | Snap-on nut |
US2185191A (en) * | 1937-08-28 | 1940-01-02 | Chester E Gray | Method of and apparatus for filling containers |
US2405201A (en) * | 1942-08-29 | 1946-08-06 | Imp Brass Mfg Co | Method of forming closed metal capsules |
US2746647A (en) * | 1950-07-27 | 1956-05-22 | Bridgeport Brass Co | Container with closure and dispensing valve |
US2744666A (en) * | 1952-05-28 | 1956-05-08 | Jacobs William | Dispenser with frictionally interfitting parts in which a closure member is rotatable about an axis |
US2829806A (en) * | 1953-11-04 | 1958-04-08 | Dev Res Inc | Dispensing valve for gas pressure containers |
US2930170A (en) * | 1954-03-29 | 1960-03-29 | Aseptic Food Fillers Inc | Means and method for aseptic packaging |
US2854176A (en) * | 1955-10-19 | 1958-09-30 | Illinois Tool Works | Dispensing valve assembly |
US2868419A (en) * | 1956-12-04 | 1959-01-13 | Jr William D Casey | Pressurized container closure |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3337946A (en) * | 1963-03-19 | 1967-08-29 | Lamson & Sessions Co | Method of mounting fasteners |
US3270924A (en) * | 1963-09-19 | 1966-09-06 | Kitabayashi Seiichi | Mounting caps for aerosol dispenser |
US3327381A (en) * | 1964-02-15 | 1967-06-27 | Hatsuta Mfg Co Ltd | Method of forming a foam fire-extin-guisher including deep drawing the tank body |
US3371408A (en) * | 1964-07-09 | 1968-03-05 | Cie Des Raccords And Robinets | Method of manufacturing hose joint elements |
US3368591A (en) * | 1964-11-25 | 1968-02-13 | Zerbetto Michele | Fluid or liquid gas spray assembled with transparent graduated container and device for recharging and discharging the fluid into another container |
US3845888A (en) * | 1971-05-07 | 1974-11-05 | Precision Valve Corp | Snap-in valve |
US3916496A (en) * | 1972-11-24 | 1975-11-04 | Fmc Corp | Valve assembly |
US4494898A (en) * | 1981-04-23 | 1985-01-22 | Metal Box P.L.C. | Mounting plastics members in openings in sheet metal members |
US4811868A (en) * | 1986-09-12 | 1989-03-14 | Tokai Corporation | Valve for aerosol container to dispense a given amount of aerosol |
CH687698A5 (en) * | 1994-07-13 | 1997-01-31 | Alusuisse Lonza Services Ag | Behaelter for delivering a filling. |
US20060144776A1 (en) * | 2005-01-05 | 2006-07-06 | Alcavis International, Inc. | Manual dialyzer header cleaning device |
US7410579B2 (en) * | 2005-01-05 | 2008-08-12 | Alcavis International, Inc. | Manual dialyzer header cleaning device |
US20090014679A1 (en) * | 2007-07-13 | 2009-01-15 | Precision Valve Corporation | Plastic aerosol valve and method of assembly, mounting and retention |
Also Published As
Publication number | Publication date |
---|---|
NL104576C (en) | |
NL245714A (en) | |
FR1241695A (en) | 1960-09-16 |
DE1260391B (en) | 1968-02-01 |
CH379420A (en) | 1964-06-30 |
GB879631A (en) | 1961-10-11 |
ES253770A1 (en) | 1960-03-01 |
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