US3024949A

US3024949A - Aerosol valves

Info

Publication number: US3024949A
Application number: US790505A
Authority: US
Inventors: Philip H Sagarin
Original assignee: Valve Corp of America Inc
Current assignee: Valve Corp of America Inc
Priority date: 1959-02-02
Filing date: 1959-02-02
Publication date: 1962-03-13
Anticipated expiration: 1979-03-13

Description

March 13, 1962 P. H. SAGARIN AEROSOL VALVES Filed Feb. 2, 1959 i VX. l

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. n 2325 li-l3 /l 22 l '1:' y f f "a I' fl INVENTOR. PHILIP H. SAGARIN 3o BY ATTORNEY United States Patent Oiice i 3,024,949 Patented Mar. 13, 1962 3,024,949 AEROSOL VALVES Philip H. Sagarin, Bridgeport, Conn., assignor to Valve Corporation of America, Incorporated, Bridgeport, Connecticut Filed Feb. 2, 1959, Ser. No. 790,505 2 Claims. (Cl. 222-394) This invention relates to aerosol valves and more particularly to the assembly and mounting thereof, and is an improvement upon Patent 2,772,820 of Dec, 4, 1956 of William R. ODonnell and assigned to the same assignee as the present invention.

Primarily the present invention contemplates simplification and reduction of the number of parts involved in construction of an aerosol valve.

Likewise the invention proposes utilization of the rigidity of a preformed mounting cup for the location and retention of the valve sealing disk.

A specific object of the invention is to provide a construction wherein the valve sealing disk also functions as a sealing gasket.

Another object of the invention is to more conveniently obtain a final clinching of the valve assembly.

Other objects, advantages and novel structural features of the invention will appear to persons skilled in the art to which it appertains as the description proceeds, both by direct recitation thereof and by implication from the context.

Referring to the accompanying drawing, in which like numerals of reference are used in both views to designate the same parts; K

FIGURE 1 is an axial sectional view of a valve assembly incorporating the present invention, showing the valve in its closed condition and showing the assembly mounted in place in a container largely broken away; and

FIGURE 2 is a similar sectional view showing the valve in its open or dispensing position.

In the specific embodiment of the invention illustrated in said drawing, the reference numeral designates an aerosol container of any suitable material and shape adapted to be sealed and withstand applied or developed internal pressure by the expandable propellant incorporated with the contents to be sprayed, or by preapplied gas pressure in the container. The top opening of the container is closed by a permanently applied cap 11 inserted therein in the nature of a stopper and curled, as at 12, at its protruding periphery into interengaging retention with a curled rim 13 bordering the container opening. In making the assembly, a suitable sealing compound may be included between the curls of the cap and rim. The cap 11 is of general cup-shape with a cylindrical outer wall 14 and planar bottom wall 15, and has a re-entrant neck 16 coaxial with the outer wall but of less height axially. For convenience of description, orienting terms, such as top and bottom, are used in appropriate application to the position of parts as illustrated in the drawing, but without restricting the invention to necessarily having to be in the erect position shown. At the top of said neck 16 is a cross-wall 17 here shown as fiat and in a plane parallel to aforesaid planar bottom wall 15. Cap or cup 11 may appropriately be stamped or drawn from sheet aluminum of adequate strength to constitute mounting for the valve assembly and to withstand deformation in use,

The valve assembly includes a hollow cylindrical member which will be herein referred to as valve-tail 18 and which is of rigid character made, for instance, of brass, steel or other material. The upper end portion 19 of this valve-tail 18 is of upwardly outwardly flaring bell formation providing a circular upper terminal rim. The

bottom end of valve-tail 18 has an irl-turned ange 20 which leaves a hole 20 therethrough for admission of fluid from the container into the said valve-tail.

Said upper rim of bell 19 of the valve-tail 18 has a diameter agreeable to the internal diameter of cup neck 16 and is inserted therein with said rim proximate to the cylindrical neck wall. The valve-tail 18 is accordingly located coaxially with the cup and cup neck, and having greater length than said cup neck, depends a considerable distance below the bottom wall 15 of the cup. Within said neck 16 of the cap and compressed between the upper rim of said bell 19 of the valve-tail and the top cross-wall 17 of the cup neck 16, is valve-gasket 21 of suitable material, of which buna and neoprene are eX- amples. Permanent retention of the bell or are of the valve-tail is obtained by pinching, as at 22, the wall of neck 16 under the outer peripheral rim of the bell or flare. By virtue of the neck 1'6 being re-entrant in the cup, this pinch is very conveniently made by a suitable tool (not shown) that can be introduced in the open mouth of the cup.

Extending coaxially within and projecting upwardly from said valve-tail 18 is a hollow or tubular valve-stem 23. Within the body of the valve-tail the said valve-stem has a peripheral bulge 24 which will act as a stop to limit upward movement of the valve-stem by engagement with the under face of valve-gasket 21. Said valvestem is open only at its upper end and closed at its lower end. The valve-stem 23 has a lateral port 25 communieating from the exterior to the hollow interior of said valve-stem, said port being at a part of the valve-stem above the bulge 24 and at a location such that by sliding the valve-stem the port may be brought at one or upper position within the contines of the valve-gasket 21 and in another or lower position below the said gasket. The gasket hugs the valve-stem and constitutes a seal against passage of fluid past the same between it and the valvestem. It may also be here noted that the same gasket also effects a seal at its margin by compression of the rim of bell 19 thereagainst.

When the port 25 is within the confines of gasket 21, it is sealed thereby against passage of uid therethrough, thus utilizing the gasket for a third function, but when the port is below the gasket it provides passage from the interior of the valve-tail 18 to the interior of the valve-stem 23. The open upper end of said valve-stem communicates with a passageway 26 in an operating button 27 on the upper end of the valve-stem, said button having an outlet orifice 23 in communication with said passageway so that contents from valve-tail 18 will discharge from the said orifice. When the valve-stem is at the upper end of its stroke, which is its normal position, limited by engagement of bulge 24 with the valvegasket 21, port 2S is located within the gasket between the top and bottom planar faces thereof, which therefore seals the port and prevents ow of fluid from the valvetail to the interior of the valve-stem and therefore no discharge takes place. In order to maintain the valvestem in its upper or normal position, except when manually depressed, a spring 29 encircles the lower portion thereof and is under compression by bearing at its upper end against bulge 24 and bearing at its lower end against flange 20 of the valve-tail. A dip tube 30 has its upper end applied on the outside of the valvetail and goes to the bottom of the container as usual to supply uid to the valve-tail until the container is substantially empty.

I claim:

1. An aerosol valve construction for dispensing fluid from a container, comprising in combination a closure cap for the container, having a reentr'ant upwardly-extended neck provided with an apertured transverse top wall to accommodate a valve stern in the aperture thereo'f; a valve gasket in the form of a flat washer, seated in the neck against said top wall; a valve tail comprising a tubular, circular housing member received in and depending from said reentrant neck, said member having a ared bell and disposed in the neck and constituting a valve-gasket clamping means, said end presenting a sharp circular edge of substantially the same diameter as the outer periphery of the gasket and constituting the sole engagement of the valve tail with the Valve gasket, said clamping end being devoid of Hats of appreciable area whereby it engages the gasket with virtually a thinfline, circular contact and is partially embedded therein to elect `a tight seal therewith; detent means on the reentrant neck, engaged with the said bell end to retain the valve tail in the neck with the sharp circular edge engaged under pressure with the outer peripheral portion of the gasket; and a hollow valve stem disposed in the valve tail and projecting through the gasket and top wall, said stem being longitudinally movable and having a valve member engageable with the gasket to control the passage of uid through the valve tail.

2. A valve construction as in claim 1, wherein the bell end cures outward from the body of the valve tail to the said sharp circular edge.

References Cited in the le of this patentl UNITED STATES PATENTS 2,721,010 Meshberg Oct. 18, 1955 2,772,820 ODonrlell Dec. 4, 1956 2,777,735 Green Jan. 15, 1957 V2,822,960 Lengel Feb. 11, 1958