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Publication numberUS3241726 A
Publication typeGrant
Publication dateMar 22, 1966
Filing dateJun 8, 1964
Priority dateJun 8, 1964
Publication numberUS 3241726 A, US 3241726A, US-A-3241726, US3241726 A, US3241726A
InventorsChester Frank R
Original AssigneeChester Frank R
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Resilient valved diaphragm for comminuted material dispenser
US 3241726 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

March 22, 1966 F. R. CHESTER 3,241,726

RESILIENT VALVED DIAPHRAGM FOR COMMINUTED MATERIAL DISPENSER Filed June 8, 1964 .HI- I VIII l/l/J/ INVENTOR. FRANK R. CHESTER United States Patent 3,241,726 RESILIENT VALVED DIAPHRAGM FOR COM- MINUTED MATERIAL DISPENSER Frank R. Chester, Carlsbad, Calif. (245-26 W. Bobier Drive, Vista, Calif.) Filed June 8, 1964, Ser. No. 373,214 1 Claim. (Cl. 222-211) The present invention relates generally to valved diaphragms and more particularly to such a diaphragm for use in a collapsible container for dispensing fluent materials.

Powdered insecticide is at present dispensed from containers in which the outlet thereof is provided with a plate having a plurality of small apertures therein. Internal pressure applied to the powder in the container forces it through these apertures in the form of a dust. This necessitates the use of very small apertures and these apertures frequently become clogged with lumps or large granules which occur in the powdered insecticide, thus rendering the dispenser difficult if not impossible to use.

It is, therefore, the primary object of this invention to provide an improved insecticide dispenser which will be unaffected by the presence of small lumps or large granules in the powder.

Another very important object, ancillary to the preceding object, is to make very fine classification and screening of the powder unnecessary since the occurrence of occasional larger granules will not plug the improved valved outlet, and obviation of the requirement for fine screening is reflected in considerable reduction in cost of processing the powder.

It is a further object of this invention to provide an improved valved diaphragm for use in a dispenser for commin-uted materials.

It is a still further object of this invention to provide an improved valve diaphragm for a powder insecticide dispenser that will be self-sealing to prevent significant entry of air into said dispenser prior to use.

Finally it is an object to provide a valved diaphragm for a comminuted material dispenser of the aforementioned character which is simple and convenient to use and which will give generally eflicient and durable service.

With these and other objects definitely in view, this invention consists in the novel construction, combination and arrangement of elements and portions, as will be hereinafter fully described in the specification; particularly pointed out in the claims, and illustrated in the drawing which forms a material part of this disclosure, and in which:

FIGURE 1 is a perspective view of one form of the novel valved diaphragm assembly in position on a collapsible container;

FIGURE 2 is a top plan view of the diaphragm assembly shown in FIGURE 1;

FIGURE 3 is a cross section of the diaphragm assembly mounted on the dispensing tube;

FIGURE 4 is a view similar to FIGURE 2 showing a modification; and

FIGURE 5 is a view showing the operation of the novel diaphragm.

The dominant feature of this invention is the diaphragm and diaphragm assembly, hereinafter identified by the numerals 11, 28 and 444648, but it is necessary for a compelte understanding of the invention to describe the environment wherewith it is used. Therefore, with part-icular reference to FIGURE 1 I have illustrated the novel dispensing assembly indicated generally by the reference numeral in FIGURE 3, mounted in a conventional collapsible container 12. As is the usual practice, this container 12 is formed of thin sheet deformable material which will normally retain the shape to which it has been plastic.

originally formed but may be deformed by the application of pressure to the sides thereof for creating a pressure within the container to eject material therefrom. An aperture, not shown, is provided in the top 14 of the container and the member 10 is inserted through this aperture with the shoulder 18 of head member 16, which in cludes diaphragm assembly 11, resting on and secured to the top 14.

Head member 16 is provided with a central bore 20 having a cone shaped mouth 22 on the outer end thereof. Cone shaped mouth 22 terminates in a radial shoulder 24 from which extends an axial flange 26 which encloses my novel flexible diaphragm 28. In this form of the invention diaphragm assembly 11 includes a diaphragm 28 which rests against the shoulder 24 and is held in place by any suitable means such as the securing ring 30. The other end of head member 16 is provided with an axial flange 32 in which is secured a hollow sleeve 34 forming an extension of bore 20. A plug 36 closes the lower end of sleeve 34 which is also provided with access holes 38 and 40 for the admission of powder under pressure from the container.

Diaphragm 28 is formed as a disc-like member from thin flexible form sustaining material such as rubber or A series of slits 42 extend through the diaphragm and radiate from a common point at approximately the center of the diaphragm as clearly shown. These slits 42 form separated portions of the diaphragm which open as pressure is increased in the container and return to their normal closed position when pressure is released. This action is clearly illustrated in FIGURE 5. The number of slits may be varied and is dependent to a certain extent on the thickness of the diaphragm. With a relatively thin diaphragm a single slit will be sufficient, distortion of the diaphragm permitting emission of the dust. In the preferred form the slits are arranged generally radially either three in number as shown in FIGURE 2, or six as shown in FIGURE 4. It is obvious that these slits 42 may be non-rectilinear and not necessarily truly radial as shown.

A slightly different form of diaphragm assembly is shown in FIGURES 4 and 5. As here shown the diaphragm 44 is formed as a thin flexible member with slits 45 similar to those shown in FIGURE 1, while the peripheral edge has an integral thickened portion 46 from which depends an axial retaining flange 48 secured in any suitable way, as by the inturned lip 50, to head member 52, which is similar to head member 16. Reference numeral 54 denotes a removable closure member which may, if desired, be adhesively applied to portion 46 during shipment.

The operation of my improved valved diaphragm will be obvious from the foregoing description. The slits in the diaphragm member provide resilient flaps which will be forced outwardly, as shown by the arrows 56, upon application of pressure to the interior of container 12. Comminuted material will be carried up the sleeve 34 as indicated by arrow 58 and ejected in the form of a dust through the diaphragm 28 or 44. It will be evident that this diaphragm will yield sufficiently to permit the emission of larger granules and any lumps that may be present-in the powder while still normally controlling the dusting operation as desired.

While I have shown my improved diaphragm assembly used on a collapsible container, it is obvious that it will have utility in any form of dusting apparatus wherein air pressure is utilized to carry comminuted material through a dispensing head.

It is understood that minor variation from the form of the invention disclosed herein may be made without departure from the spirit and scope of the invention, and that the specification and drawing are to be considered as merely illustrative rather than limiting.

I claim:

A comminuted material dispenser comprising:

a collapsible container having an aperture therein; said container being formed of thin deformable material normally retaining the shape to which it has been originally formed but which may be deformed by application of pressure to the sides thereof for creating a temporarily increased air pressure within the container;

a tubular head member mounted in said aperture;

hollow tube extending from said head member into said container; and

resilient diaphragm member, including a plurality of intersecting slits, normally closing the end of said tubular head member, said slits and head member permitting air to move in both directions, out of and into said container during operation, and said diaphragm member adjacent said slits being easily deformed by air and comminuted material escaping therethrough due to said increased pressure, the slitseparated portions of the diaphragm functioning as resilient flaps to disintegrate the comminuted material and being capable of being further deformed as necessary to pass larger granules and lumps in said comminuted material, whereby costly fine screening of said comminuted material is made unnecessary.

References Cited by the Examiner UNITED STATES PATENTS LOUIS I. DEMBO, Primary Examiner.

CHARLES R. CARTER, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1505442 *Jan 30, 1922Aug 19, 1924Stephens Thomas JFluid-dispensing container
US1996156 *Feb 23, 1932Apr 2, 1935Oscar JanssenDispensing apparatus
US2143661 *Feb 23, 1938Jan 10, 1939Schrader Arthur WDispensing head for collapsible tubes
US2679954 *May 23, 1951Jun 1, 1954Barnes James FDispensing container having a slitted resilient closure disk and a sealing tab
US2804240 *Oct 11, 1954Aug 27, 1957Clifford W AndersonDispensing attachment for containers
US3105618 *Sep 21, 1960Oct 1, 1963Beckman Instruments IncMicro pipette fluid distributor
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3506162 *Feb 8, 1968Apr 14, 1970Schwartzman GilbertSpray applicator
US3917120 *Jun 6, 1974Nov 4, 1975Merck Patent GmbhSingle use container for liquid pharmaceutical compositions
US3949911 *May 6, 1974Apr 13, 1976Societe Anonyme Dite: L'orealPressurizable container by heat activation
US4186882 *Dec 8, 1977Feb 5, 1980Harry SzczepanskiAtomizing liquid dispenser
US4354624 *Jul 29, 1980Oct 19, 1982Farmhand, Inc.Slurry spreader with metering valves
US4356935 *Apr 18, 1979Nov 2, 1982Kardon Industries, Inc.Method and apparatus for storing and dispensing fluid foodstuff
US4454967 *Apr 19, 1982Jun 19, 1984Carr Michael ADrip preventer
US4667854 *Apr 19, 1985May 26, 1987Ecolab Inc.Liquid dispenser
US4718778 *Feb 5, 1986Jan 12, 1988Kabushiki Kaisha Hosokawa YokoLiquid container
US4728006 *Oct 1, 1984Mar 1, 1988The Procter & Gamble CompanyFlexible container including self-sealing dispensing valve to provide automatic shut-off and leak resistant inverted storage
US4749108 *Oct 15, 1987Jun 7, 1988The Procter & Gamble CompanyBimodal storage and dispensing package including self-sealing dispensing valve to provide automatic shut-off and leak-resistant inverted storage
US4934570 *Jul 22, 1988Jun 19, 1990Kardon Industries, Inc.Container closure with breakaway plunger and diffusing container incorporating the same
US4938393 *Nov 6, 1989Jul 3, 1990The Procter & Gamble CompanyBimodal storage and dispensing package for fluent material
US4969581 *Aug 8, 1989Nov 13, 1990The Procter & Gamble CompanyUnequivocal bottom delivery container with self-sealing valve
US5248066 *Mar 27, 1992Sep 28, 1993Ecolab Inc.Liquid dispenser with collapsible reservoir holder
US5509710 *Mar 9, 1995Apr 23, 1996Deere & CoFor transporting injured persons carried on backboards
US5890621 *Oct 21, 1996Apr 6, 1999Gerber Products CompanyCup for young children with cap valved for fluid control
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US6192797Dec 23, 1999Feb 27, 2001Sonoco Development, Inc.Ink cartridge for automated dispensing systems
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US7048154 *Mar 20, 2004May 23, 2006Phillips Edward WBreathable rupturable closure for a flexible container
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US8307491 *Apr 6, 2008Nov 13, 2012Matthew Justin MichelWhisk wiper
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Classifications
U.S. Classification222/211, 222/490, 222/212
International ClassificationB65D47/20, B65D47/04
Cooperative ClassificationB65D47/2031
European ClassificationB65D47/20E2