REVERSE SUCTION INHIBITING SQUEEZE BOTTLE DISCHARGE NOZZLE
A reverse suction inhibiting squeeze bottle discharge nozzle is secured to the filler neck of an otherwise conventional squeeze bottle. The reverse suction inhibiting squeeze bottle discharge nozzle provides a valve operative within the discharge passage of the nozzle together with an air return venting system and apparatus that cooperate with the valve to provide a vented air flow return into the bottle interior thereby restoring atmospheric pressure to the bottle interior. The venting of the air return venting system and the closure of the valve occur solely when the deformed squeeze bottle is released. As a result, the reverse suctioning of potentially contaminated material discharge back into the squeeze bottle interior is prevented.
This application claims the benefit of and priority under 35 U.S.C. 119(e) of U.S. Provisional Patent Application No. 62/474,770 entitled REVERSE SUCTION INHIBITING SQUEEZE BOTTLE DISCHARGE NOZZLE, filed Jun. 5, 2017 in the names of Steve Smith, Arman Semerjian and Christopher H. Froian, the disclosure of which is incorporated herein by reference
FIELD OF THE INVENTIONThis invention relates generally to squeeze bottles and particularly to the discharge nozzles utilized in dispensing flowable materials from the squeeze bottle interior.
BACKGROUND OF THE INVENTIONOne of the most ubiquitous types of material containers and dispensers used in commerce today is known generally in the art as the “squeeze bottle”. Such containers are utilized for storing, transporting, merchandising and utilizing a virtually endless variety of products and materials ranging from industrial products to condiments to medical products and to various lubricants. In most applications of typical squeeze bottle containers, the material is generally viscous and flowable such as pastes, gels, adhesives and viscous liquids.
While squeeze bottles have been provided in a virtually endless variety of sizes, shapes and designs, the typical squeeze bottle container is relatively simple construction and is relatively low in manufacturing costs. In general, squeeze bottles utilize a deformable container or “bottle” having a hollow interior for receiving the flowing material. Such squeeze bottles are preferably formed of a flexible and resilient plastic material or the like. In most instances the bottle includes a filler neck which facilitates filling the bottle with the flowable material. A cap is secured to the filler neck by conventional attachment and supports an elongated, usually tapered, discharge nozzle. The latter defines a material flow passage therethrough. In most squeeze bottle designs, a removable nozzle cap is secured to the outer end of the nozzle to provide an airtight closure when the squeeze bottle is not in rise.
The use of the typical squeeze bottle is also generally simple and straightforward. With the nozzle cap removed, the user tips the squeeze bottle downwardly positioning the end of the discharge nozzle in proximity to the desired area of material deposition. Tho squeeze bottle is then squeezed by the user causing the squeeze bottle to deform inwardly and thereby force a flow of the material outwardly from the squeeze bottle interior, through the passage in the discharge nozzle and beyond to the surface for deposition. Once the desired quantity of material has been discharged from the squeeze bottle and deposited upon the desired surface, the user then releases the squeeze bottle allowing the bottle to return to its original shape. In the event that an additional quantity of material is to be discharged, the user may employ repeated cycles of squeezing and releasing the squeeze bottle. The purpose of releasing the squeeze bottle is to facilitate its return to its relaxed shape and to suction air into the bottle interior as it returns to its relaxed shape.
The characteristic by which such typical squeeze bottles suction air into the bottle interior between discharges of material is the focus of the present invention. Unfortunately, this suction of air into the squeeze bottle also tends to draw a portion of the discharged flowable material from the surface deposition back into the bottle interior along with the air being drawn into the bottle interior moving from the nozzle tip, through the nozzle discharge passage, and back into the squeeze bottle interior. While in certain applications of squeeze bottles this reverse suctioning of the flowable material from the surface deposition back into the bottle contents is of little consequence. However, in many squeeze bottle applications it presents a serious problem of contamination of the squeeze bottle interior and the flowable material therein. In many applications the surface upon which the flowable material is deposited is a source of potential contamination of the flowable material. In some applications such as industrial and commercial use, this contamination may result in degrading the characteristics of the material. Examples of such industrial use are found in application of lubricants, adhesives or sealants. In other applications to which the present invention particularly relates, these squeeze bottles are employed in the demanding environment of medical technology and patient care. In medical technology applications of squeeze bottles, the typical desire of the medical practitioner is to be able to utilize a squeeze bottle to deposit a quantity of the flowable material onto a patient's skin surface, or the like, and following such use to be able to reuse the squeeze bottle upon a succession of future patients.
Unfortunately, the typical squeeze bottles presently employed by medical practitioners render this repeated use impractical and potentially hazardous to successive patients upon whom the flowable material is administered. The above-described suctioning of contaminated, or potentially contaminated, material from a patient's skin back into the remainder of the flowable material, housed in the squeeze bottle raises the likelihood of contaminating the flowable material applied to subsequent patients. Recognizing the substantial risk to patients created by repeated use of a squeeze bottle on a plurality of patients, practitioners in the medical arts have seeking to maintain best practices, tend to discard the squeeze bottle after use. This may render the squeeze bottle a “single use” container. This, of course, has been found to be extremely wasteful and cost prohibitive. While practitioners using squeeze bottles and manufacturers of squeeze bottle dispensed materials have sought to relieve this wasteful process through reducing the squeeze bottle size and in some instances providing small squeeze bottles specifically intended for single use, the community of medical practitioners has overwhelmingly rejected this proposed solution.
The failure of squeeze bottle manufacturers to overcome this problem, and meet the practical needs of medical practitioners as well as the similar needs of various industrial and commercial product types that are also subject to unnecessary waste and cost to avoid similar contamination of material through this reverse suction process, has given rise to a significant and unresolved need in the manufacture, distribution and use of squeeze bottles. As a result, there remains a continuing and unresolved need in the art for a reverse suction inhibiting squeeze bottle discharge nozzle.
SUMMARY OF THE INVENTIONAccordingly, it is a general object of the present invention to provide an improved squeeze bottle container. It is a more particular object of the present invention to provide an improved discharge nozzle for use in squeeze bottles. It is a still more particular object of the present invention to provide an improved discharge nozzle for use upon a squeeze bottle which inhibits reverse suction of the flowable material back into the squeeze bottle interior and thereby prevents contamination of the squeeze bottle contents.
In accordance with the present invention there is provided a reverse suction inhibiting squeeze bottle discharge nozzle secured to the filler neck of an otherwise conventional squeeze bottle. The reverse suction inhibiting squeeze bottle discharge nozzle of the present invention provides a valve operative within the discharge passage of the nozzle together with an air return venting system and apparatus that cooperates with the valve to provide a vented air flow return into the bottle interior thereby restoring atmospheric pressure to the bottle interior. The venting of the air return venting system and the closure of the valve occur solely when the deformed squeeze bottle is released. As a result, the reverse suctioning of potentially contaminated material discharge back into the squeeze bottle interior is prevented.
In further accordance with the present invention there is provided a reverse suction inhibiting squeeze bottle discharge nozzle for use in combination with a squeeze bottle, the squeeze bottle discharge nozzle comprising: an assembly cap, securable to a squeeze bottle in communication with flowable material therein, the assembly cap defining a discharge aperture and a vent aperture; a one way discharge valve supported within the discharge aperture operative to permit material flow outwardly from the assembly cap and to prevent material flow inwardly to the assembly cap; and a vent valve operative to permit air flow into the assembly cap through the vent aperture and to prevent airflow outwardly from the assembly cap through the vent aperture, the discharge valve and the vent valve cooperating to allow flowable material within the assembly cap to be forced outwardly through the discharge valve and to prevent a suction force within the assembly cap from drawing discharge flowable material back into the assembly cap.
From another perspective, the present invention provides a reverse suction inhibiting squeeze bottle discharge nozzle, said squeeze bottle discharge nozzle comprising: a squeeze bottle formed of a resilient material defining a closed interior volume and an open neck; a quantity of flowable material received within the interior volume; an assembly cap, secured to the squeeze bottle in communication with the closed interior volume and the flowable material therein, the assembly cap defining a discharge aperture and a vent aperture; a one way discharge valve supported within the discharge aperture operative to permit material flow outwardly from the assembly cap and to prevent material flow inwardly to the assembly cap; and a vent valve operative to permit air flow into the assembly cap and the closed interior volume through the vent aperture and to prevent airflow and flowable material flow outwardly from the assembly cap through the vent aperture, the discharge valve and the vent valve cooperating to allow flowable material within the closed interior volume and the assembly cap to be forced outwardly through the discharge valve and to prevent a suction force within the closed interior volume and the assembly cap from drawing discharged flowable material back into the assembly cap.
The features of the present invention, which are believed to be novel, are set forth with particularity in the appended claims. The invention, together with further objects and advantages thereof, may best be understood by reference to the following description taken in conjunction with the accompanying drawings, in the several figures of which like reference numerals identify like elements and in which:
By way of overview, the present invention reverse suction inhibiting squeeze bottle discharge nozzle provides a discharge nozzle assembly which is secured to the filler neck of a resilient elastic squeeze bottle formed of a suitable plastic material or the like. The discharge nozzle assembly is configured to be received upon the filler neck of the squeeze bottle by conventional threaded attachment, conventional snap fit attachment or alternatively secured to the neck portion of a squeeze bottle fabricated to receive the discharge nozzle assembly by direct attachment. The discharge nozzle assembly of the present invention utilizes a one-way valve, such as “duckbill valve”, together with an air venting system which allows the suction formed in the squeeze bottle when squeezed and released by the user to simultaneously close the one-way valve and vent return air into the squeeze bottle interior thereby returning the squeeze bottle interior normal atmospheric pressure. By this action, the reverse suction of material back into the squeeze bottle interior normally created by prior art devices is completely avoided. As a result, the squeeze bottle interior and the material contents within the squeeze bottle interior remain protected from contamination which would otherwise result in conventional squeeze bottles as the reverse suction draws potentially contaminated material into the bottle through the nozzle passage. As used herein, the term “squeeze bottle” will be understood to include various types of material containers, including flexible material bottles and “toothpaste-type” containers, typically formed of an elastic or deformable material which is usually squeezed to discharge a flowable material from within the container.
A discharge nozzle assembly generally referenced by numeral 20 includes an assembly cap 21 which is received upon and secured to filler neck 12 by conventional attachment. As is better seen in
Returning to
The operation and structure of discharge nozzle 32 together with nozzle cap 23 and valve neck 22 is better seen in the enlarged section view set forth below in
Discharge nozzle 32 includes a one-way valve 30 at one end thereof and a frustoconical flexible seal 31 at the opposite and thereof. Discharge nozzle 32 further defines a nozzle passage 33 extending through flexible seal 31 and one-way valve 30. A rib 34 extends outwardly from the body of discharge nozzle 32. The soft silicone material from which discharge nozzle 32 is fabricated allows discharge nozzle 32 to fit tightly within center discharge aperture 24 of valve neck 22. Rib 34 of discharge nozzle 32 extends beyond center aperture 24. Accordingly, the cooperation between the soft material of discharge nozzle 32 together with rib 34 and flexible seal 31 cooperate to secure discharge nozzle 32 within center discharge aperture 24.
Nozzle cap 23 defines a cylindrical receptacle 35 within which a groove 36 is formed. Nozzle cap 23 further defines a nozzle seat 26 which forms a tapered seat configured to receive and enclose valve 30 of discharge nozzle 32. Nozzle cap 23 is secured to valve neck 22 by the insertion of neck extension 27 into receptacle 35. Rib 28 of neck extension 27 is received within and engages groove 36 formed within nozzle cap 23. The cooperation of rib 28 and groove 36 secures nozzle cap 23 against planar surface 29 of valve neck 22 in a snap fit removable attachment. With nozzle cap 23 secured upon neck extension 27, valve 30 is tightly received within nozzle seat 26 providing a secure closure of one-way valve 30 during periods of non-use.
In the configuration shown in
Discharge nozzle 32 includes one-way valve 30 at one end thereof and flexible seal 31 at the opposite end thereof. Discharge nozzle 32 further defines nozzle passage 33 extending through flexible seal 31 and one-way valve 30. Rib 34 extends outwardly from the body of discharge nozzle 32.
Nozzle cap 23 defines cylindrical receptacle 35 within which groove 36 is formed. Nozzle cap 23 further defines nozzle seat 26 which forms a tapered seat configured to receive and enclose one-way valve 30 of discharge nozzle 32.
In the configuration shown in
The assembly of discharge nozzle assembly 20 is carried forward by initially moving discharge nozzle 32 into assembly cap 21 in the direction indicated by arrow 39. One-way valve 30 is aligned with aperture 24 after which one-way valve 30 is gripped and used to draw discharge nozzle 32 through aperture 24 until rib 34 passes through aperture 24 and beyond. Discharge nozzle 32 assumes the position shown above in
Thus,
Thus,
In operation, flexible body 61 is squeeze or otherwise deformed to force a quantity of the viscous material therein outwardly through assembly cap 60 and one way valve 30 of discharge nozzle 32. As described above, the one way operation of valve 30 provides a characteristic whereby material is able to flow outwardly through discharge nozzle 32 but is unable to be suctioned back through valve 30 when the pressurizing or deforming force that has been applied to flexible body 61 is removed. This one way characteristic inhibits the suctioning of material and air back through discharge nozzle 32 described above. As is also described above and with temporary reference to
More specifically, discharge nozzle assembly 70 includes an assembly cap 71 having an extending valve neck 72 which terminates in a generally planar surface 79. Surface 79 defines a center aperture 74 and further supports a neck extension 77. Neck extension 77 further supports an outwardly extending rib 78. Valve neck 72 further defines a vent apertures 75. A plurality of threads are formed within assembly cap 71 to facilitate attachment of assembly cap 71 to a conventional squeeze bottle (not shown). Discharge nozzle assembly 70 further includes a discharge nozzle 82 preferably formed of a soft flexible resilient material having a one way valve 80 formed there in. As described above one way valve 80 may comprise virtually any one way valve structure such as a conventional “duck bill” valve or the like. Discharge nozzle 82 further supports a rib 84 and a resilient seal 81. A nozzle passage 83 extends through discharge nozzle 82 and one way valve 80. Discharge nozzle assembly 70 further includes a vent valve 90 fabricated of a soft flexible resilient material and similar in structure to discharge nozzle 82. Thus then to valve 90 includes a one-way valve 92 and a flexible seal 91. Vent valve 90 further includes a rib 94 and a nozzle passage 93 formed therein.
Discharge valve 82 is assembled to assembly cap 71 by initially passing one way valve 80 through center aperture 74. Thereafter the remainder of one way valve 80 and rib 84 is drawn through center aperture 74 bringing seal 81 against the undersurface surrounding center aperture 74. In a similar fashion vent valve 90 is assembled to valve neck 72 by passing one way valve 92 through vent apertures 75 and thereafter drawing the remainder of vent valve 90 through aperture 75 passing rib 94 through vent apertures 75 and bringing seal 91 against the outer surface surrounding vent apertures 75.
More specifically, and as is described above, discharge nozzle assembly 70 includes an assembly cap 71 having an extending valve neck 72 which terminates in a generally planar surface 79. Surface 79 defines a center aperture 74 and further supports a neck extension 77. Neck extension 77 further supports an outwardly extending rib 78. Valve neck 72 further defines a vent apertures 75. A plurality of threads are formed within assembly cap 71 to facilitate attachment of assembly cap 71 to a conventional squeeze bottle (not shown). Discharge nozzle assembly 70 further includes a discharge nozzle 82 preferably formed of a soft flexible resilient material having a one way valve 80 formed there in. As described above one way valve 80 may comprise virtually any one way valve structure as a conventional “duck bill” valve or the like. Discharge nozzle 82 further supports a rib 84 and a resilient seal 81. A nozzle passage 83 extends through discharge nozzle 82 and one ways valve 80. Discharge nozzle assembly 70 further eludes a vent valve 90 fabricated of a soft flexible resilient material and similar in structure discharge nozzle 82. Thus then to valve 90 includes a one-way valve 92 and a flexible seal 91. Vent valve 90 further includes a rib 94 and a nozzle passage 93 formed therein.
In operation, in the absence of squeeze pressure applied to the squeeze bottle (not shown) to which discharge nozzle assembly 70 is secured, discharge nozzle 82 and vent valve 90 assume a normally closed configuration. When the user applies a squeeze force to the squeeze bottle, the viscous material therein is forced into assembly cap 71 and exerts an outward pressure against vent valve 90 and discharge nozzle 82. The viscous material forced into nozzle passage 83 of discharge nozzle 82 produces a force in the direction indicated by arrow 95 which opens one way valve 80 allowing material to be discharged outwardly through one way valve 80. Conversely, the force of viscous material pressure against vent valve 90 in the direction indicated by arrow 96 is opposed by the one way structure of vent valve 90 and one way valve 92 thereof is forced into closure. The closure of one ways valve 92 of vent valve 90 prevents material flow outwardly through vent valve 90. The discharge flow through discharge nozzle 82 continues as the user continues to apply a squeeze pressure to the squeeze bottle.
Once the user releases the squeeze pressure applied to the squeeze bottle, the resilient character of the squeeze bottle described above produces a section force which attempts to draw air back into the interior of the squeeze bottle. This suction force attempts to draw discharge viscous material back through discharge nozzle 82 in the direction indicated by arrow 97. The operation of one way valve 80 prevents material flow in the direction indicated by arrow 97 and discharge nozzle 82 remains closed. Conversely, the suction force created within assembly cap 71 draws air through vent valve 90 in the direction indicated by arrow 98. This direction of airflow opens one way valve 92 allowing vent air to pass through vent passage 93 of vent valve 90 thereby relieving the suction within assembly cap 71 and the squeeze bottle (not shown to which it is secured. Thus the suction force which might otherwise draw potentially contaminated material hack through the discharge nozzle and into the container interior is prevented from flowing by the one-way character of the discharge nozzle and the venting provided by vent valve 90 supported within neck 72.
What has been shown is a reverse suction inhibiting squeeze bottle discharge nozzle secured to the filler neck of an otherwise conventional squeeze bottle. The reverse suction inhibiting squeeze bottle discharge nozzle shown provides a valve operative within the discharge passage of the nozzle together with an air return venting system and apparatus that cooperates with the valve to provide a vented air flow return into the bottle interior thereby restoring atmospheric pressure to the bottle interior. The venting action provided by the air return venting system and the closure of the valve occur solely when the deformed squeeze bottle is released. As a result, the reverse suctioning of potentially contaminated material discharge back into the squeeze bottle interior is prevented.
While particular embodiments of the invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention in its broader aspects. Therefore, the aim in the appended claims is to cover all such changes and modifications as fall within the true spirit and scope of the invention.
Claims
1. A reverse suction inhibiting squeeze bottle discharge nozzle for use in combination with a squeeze bottle, said squeeze bottle discharge nozzle comprising;
- an assembly cap, securable to a squeeze bottle in communication with flowable material therein, said assembly cap defining and extending valve neck defining a sidewall, a discharge aperture and a vent aperture;
- a one way discharge valve supported within said discharge aperture operative to permit material flow outwardly from said assembly cap and to prevent material flow inwardly to said assembly cap; and
- a vent valve operative to permit air flow into said assembly cap through said vent aperture and to prevent airflow outwardly from said assembly cap through said vent aperture,
- said discharge valve and said vent valve cooperating to allow flowable material within said assembly cap to be forced outwardly through said discharge valve and to vent air into said assembly cap and to prevent a suction force within said assembly cap from drawing discharged flowable material back into said assembly cap.
2. The reverse suction inhibiting squeeze bottle discharge nozzle forth in claim 1 wherein said assembly cap defines a planar surface and wherein said discharge aperture is defined in said planar surface.
3. The reverse suction inhibiting squeeze bottle discharge nozzle set forth claim 2 wherein said one way discharge valve includes;
- an elongated discharge nozzle having a one way valve formed at a first end thereof, said one way valve extending through said discharge aperture beyond said planar surface;
- flexible seal formed at a second end of said discharge nozzle extending outwardly there from within said assembly cap beyond said discharge aperture on the underside of said planar surface.
4. The reverse suction inhibiting squeeze bottle discharge nozzle set forth in claim 3 wherein said planar surface defines a vent aperture proximate to said discharge aperture, said flexible seal covering said vent aperture and flexing between a first position sealing said vent aperture and a second position displaced from said vent aperture.
5. The reverses suction inhibiting squeeze bottle discharge nozzle set forth in claim 4 wherein said one way discharge valve including said elongated discharge nozzle, said one way valve and said flexible seal are formed of a single integral unit.
6. The reverse suction inhibiting squeeze bottle discharge nozzle set forth in claim 5 wherein said flexible seal, said discharge nozzle and said one way valve define a continuous nozzle passage therethrough and wherein the flow of flowable material through said nozzle passage is permitted to flow outwardly by said one way valve but prevented from flowing inwardly through said one way valve.
7. The reverse suction inhibiting squeeze bottle discharge nozzle set forth in claim 1 wherein said assembly cap defines a planar surface and wherein said discharge aperture is defined in said planar surface and wherein said vent aperture is formed in said sidewall of said valve neck.
8. The reverse suction inhibiting squeeze bottle discharge nozzle set forth in claim 7 wherein said vent valve is received within said vent aperture and defines an extending seal, a one way valve and a vent passage therethrough, said vent valve being secured within said vent aperture such that said seal is outside said valve neck and said one way valve extends inwardly through said vent aperture into said valve neck whereby air is able to pass into said valve neck by flowable material and air are prevented from passing outwardly from said valve neck through said vent valve.
9. The reverse suction inhibiting squeeze bottle discharge nozzle set forth in claim 8 wherein said one way discharge valve includes;
- an elongated discharge nozzle having a one way valve formed at a first end thereof, said one way valve extending through said discharge aperture beyond said planar surface;
- a flexible seal formed at a second end of said discharge nozzle extending outwardly there from within said assembly cap beyond said discharge aperture on the underside of said planar surface.
10. The reverse suction inhibiting squeeze bottle discharge nozzle set forth in claim 1 wherein said assembly cap includes a plurality of attachment threads for securing said assembly cap to a cooperating threaded attachment on a squeeze bottle.
11. The reverse suction inhibiting squeeze bottle discharge nozzle set forth in claim 1 wherein said assembly cap includes a molded attachment for securing said assembly cap to a cooperating molded attachment on a molded squeeze bottle.
12. A reverse suction inhibiting squeeze bottle discharge nozzle, said squeeze bottle discharge nozzle comprising:
- a squeeze bottle formed of a resilient material defining a closed interior volume and an open neck;
- a quantity of flowable material received within said interior volume;
- an assembly cap, secured to said squeeze bottle in communication with said closed interior volume and said flowable material therein, said assembly cap defining a discharge aperture and a vent aperture;
- a one way discharge valve supported within said discharge aperture operative to permit material flow outwardly from said assembly cap and to prevent material flow inwardly to said assembly cap; and
- a vent valve operative to permit air flow into said assembly cap and said closed interior volume through said vent aperture and to prevent airflow and flowable material flow outwardly from said assembly cap through said vent aperture,
- said discharge valve and said vent valve cooperating to allow flowable material within said closed interior volume and said assembly cap to be forced outwardly through said discharge valve and to prevent a suction force within said closed interior volume and said assembly cap from drawing discharged flowable material back into said assembly cap.
13. A reverse suction inhibiting squeeze bottle discharge nozzle, said squeeze bottle discharge nozzle comprising:
- a squeeze bottle formed of a resilient material defining a closed interior volume, a bottom having a vent aperture formed therein and an open neck;
- a quantity of flowable material received within said interior volume;
- an assembly cap, secured to said squeeze bottle open neck in communication with said closed interior volume and said flowable material therein, said assembly cap defining a discharge aperture;
- a one way discharge valve supported within said discharge aperture operative to permit material flow outwardly from said assembly cap and to prevent material flow inwardly to said assembly cap; and
- a vent valve supported within said vent aperture operative to permit air flow into said assembly cap and said closed interior volume through said vent valve and to prevent airflow and flowable material flow outwardly from said assembly cap through said vent valve,
- said discharge valve and said vent valve cooperating to allow flowable material within said closed interior volume and said assembly cap to be forced outwardly through said discharge valve and to prevent a suction force within said closed interior volume and said assembly cap from drawing discharged flowable material back into said assembly cap.
14. The reverse suction inhibiting squeeze bottle discharge nozzle set forth in claim 13 wherein said squeeze bottle bottom defines a concave surface surrounding said vent aperture allowing said squeeze bottle to rest upright when said vent valve is within said vent aperture.
Type: Application
Filed: Jul 24, 2017
Publication Date: Sep 27, 2018
Inventors: Steve Smith (Trabuco Canyon, CA), Arman Semerjian (Temecula, CA), Christopher H. Froian (Whittier, CA)
Application Number: 15/658,216