CA1113050A - Unitary valve and spring assembly - Google Patents
Unitary valve and spring assemblyInfo
- Publication number
- CA1113050A CA1113050A CA000316058A CA316058A CA1113050A CA 1113050 A CA1113050 A CA 1113050A CA 000316058 A CA000316058 A CA 000316058A CA 316058 A CA316058 A CA 316058A CA 1113050 A CA1113050 A CA 1113050A
- Authority
- CA
- Canada
- Prior art keywords
- assembly
- spring member
- chamber
- fluid
- conduit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 20
- 238000000465 moulding Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000000063 preceeding effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
- B05B11/0064—Lift valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
- B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
- B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3468—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with means for controlling the flow of liquid entering or leaving the swirl chamber
- B05B1/3473—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with means for controlling the flow of liquid entering or leaving the swirl chamber in response to liquid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Fuel-Injection Apparatus (AREA)
- Springs (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE: A spring-loaded double-ended check valve assembly is provided for use in the outlet chamber of a dis-penser for spraying liquids. The entire assembly, including both ends and the spring, is made in one-piece and is easily moldable from plastic material thus effecting ease of manufacture and assembly into the sprayer, reduced labor and material costs and affording the reliability of a unitary member.
Description
3~'5~
BACI~GROUND F ~HE INVENTION
Sprayers for liquids, particularly, those of the hand-operated trigger type, ordinarily include a check valve -in a chamber located just inside the sprayer outlet which serves to block off the inlet passage to the chamber from the interior of the sprayer until the liquid becomes pressurized and to block the passage of liquid from the chamber except to allow it to pass through certain swirl or other passages to the outlet. For instance, the patent 3,685,739 to Vanier shows a shuttle valve which is free to move in a sprayer outlet chamber wherein upon operation of the sprayer a partial vacuum downstream of the chamber causes it to block the entrance of air through the outlet orifice into the pumping means of the sprayer by closing the liquid supply passage after which the shuttle moves in the opposite direction as the pressure of the fluid in the supply passage builds up and blocks the outlet except for the swirl passages.
Another patent 3,061,202 to Tyler shows a check valve which achieves the same general purpose as that of Vanier but is spring-loaded so that it remains on its seat to close the liquid supply passage at all times except when the sprayer is operated to create a sufficient pressure in the supply
BACI~GROUND F ~HE INVENTION
Sprayers for liquids, particularly, those of the hand-operated trigger type, ordinarily include a check valve -in a chamber located just inside the sprayer outlet which serves to block off the inlet passage to the chamber from the interior of the sprayer until the liquid becomes pressurized and to block the passage of liquid from the chamber except to allow it to pass through certain swirl or other passages to the outlet. For instance, the patent 3,685,739 to Vanier shows a shuttle valve which is free to move in a sprayer outlet chamber wherein upon operation of the sprayer a partial vacuum downstream of the chamber causes it to block the entrance of air through the outlet orifice into the pumping means of the sprayer by closing the liquid supply passage after which the shuttle moves in the opposite direction as the pressure of the fluid in the supply passage builds up and blocks the outlet except for the swirl passages.
Another patent 3,061,202 to Tyler shows a check valve which achieves the same general purpose as that of Vanier but is spring-loaded so that it remains on its seat to close the liquid supply passage at all times except when the sprayer is operated to create a sufficient pressure in the supply
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3~5~
passage to overcome the spring and thus force the valve to open. Flow of the fluid to be spra~ed then occurs, in each instance, to a swirl chamber from which it is sprayed through an outlet orifice~ The inlet passage 35 of Tyler is closed by a conical poppet 29 in his showing but flat poppets have been used for this purpose as well. The present invention is an improvement in this art and is distinct from it in that the swirl chamber closure plate, the spring and the poppet are all made of one-piece as a unitary, molded construction thus eliminating the need for three separate parts as shown by Tyler and yet still achieving the same desirable flow and shut-off characteristics. Elimination of the plurality of parts means less assembly time and thus less cost of manufacture, improved simplicity, one-piece reliability and the elimination of compatibility of material problems and problems associated with metal parts such as corrosion for instance.
Another patent 3,620,421 to MacGuire-Cooper shows a valve requiring lateral movement of the valve to tilt it on its seat to open the outlet to the flow of a product ~rom its container below the valve. A resilient annular portion is provided which acts to restore the valve to its closed position and this annular portion is molded integrally with the valve portion. In the present invention, on the other hand, the valve is linear in its action and includes an integrally molded sinuous spring which compresses only upon the application of proper operating pressure supplied by the pump action of the sprayer, and, the sinuous spring îs carefully designed and molded to operate only when the pressure is sufficient to produce a spray.
5~ ~
OBJECTS OF THE IN~ENTION
It is, therefore, an object of the present invention to pro-vide a check valve for the exit chamber of a fluid sprayer which includes a sinuous spring and the valve poppet all in one molded piece.
It is also an object of the present invention to provide a check valve as in the foregoing paragraph which includes not only the sinuous spring and valve poppet but also a spin element all in one unitary molded piece.
It is also an object of the present invention to provide a check valve as described in the preceeding paragraphs but including a spring in the shape of a letter S.
It is also an object of the present invention to provide a molded one-piece valve, spring and spin element assembly having the reliability of a unitary assembly, ease of manufacture and therefore less costly, resistant to coxrosion and having no metal parts.
It is also an object of the present invention to provide a mount for the spin element which prevents possible mold sinks at the center of the spin element.
Thus, in accordance with the present teachings, an assembly is provided which is formed as a unitary molding and includes a sinuous spring member at a flat faced valve member connected to one end of the spring member and deployed transversely with res-pect to the spring member with a spin element being connected --to the other end of the spring member. The spin element comprises a flat plate deployed transversely wi~h respect to the spring member and connected thereto by a arcuate bridge~mQmber.
Other objects and advantages of the present invention will become apparent from the detailed description and claims which follow.
passage to overcome the spring and thus force the valve to open. Flow of the fluid to be spra~ed then occurs, in each instance, to a swirl chamber from which it is sprayed through an outlet orifice~ The inlet passage 35 of Tyler is closed by a conical poppet 29 in his showing but flat poppets have been used for this purpose as well. The present invention is an improvement in this art and is distinct from it in that the swirl chamber closure plate, the spring and the poppet are all made of one-piece as a unitary, molded construction thus eliminating the need for three separate parts as shown by Tyler and yet still achieving the same desirable flow and shut-off characteristics. Elimination of the plurality of parts means less assembly time and thus less cost of manufacture, improved simplicity, one-piece reliability and the elimination of compatibility of material problems and problems associated with metal parts such as corrosion for instance.
Another patent 3,620,421 to MacGuire-Cooper shows a valve requiring lateral movement of the valve to tilt it on its seat to open the outlet to the flow of a product ~rom its container below the valve. A resilient annular portion is provided which acts to restore the valve to its closed position and this annular portion is molded integrally with the valve portion. In the present invention, on the other hand, the valve is linear in its action and includes an integrally molded sinuous spring which compresses only upon the application of proper operating pressure supplied by the pump action of the sprayer, and, the sinuous spring îs carefully designed and molded to operate only when the pressure is sufficient to produce a spray.
5~ ~
OBJECTS OF THE IN~ENTION
It is, therefore, an object of the present invention to pro-vide a check valve for the exit chamber of a fluid sprayer which includes a sinuous spring and the valve poppet all in one molded piece.
It is also an object of the present invention to provide a check valve as in the foregoing paragraph which includes not only the sinuous spring and valve poppet but also a spin element all in one unitary molded piece.
It is also an object of the present invention to provide a check valve as described in the preceeding paragraphs but including a spring in the shape of a letter S.
It is also an object of the present invention to provide a molded one-piece valve, spring and spin element assembly having the reliability of a unitary assembly, ease of manufacture and therefore less costly, resistant to coxrosion and having no metal parts.
It is also an object of the present invention to provide a mount for the spin element which prevents possible mold sinks at the center of the spin element.
Thus, in accordance with the present teachings, an assembly is provided which is formed as a unitary molding and includes a sinuous spring member at a flat faced valve member connected to one end of the spring member and deployed transversely with res-pect to the spring member with a spin element being connected --to the other end of the spring member. The spin element comprises a flat plate deployed transversely wi~h respect to the spring member and connected thereto by a arcuate bridge~mQmber.
Other objects and advantages of the present invention will become apparent from the detailed description and claims which follow.
-4-DESCRIPTION OF THE DRAWINCS
_ Figure 1 is a partial cross-section in front elevation of that portion o the sprayer which includes the in-vention. The unitary assembly including the spring and a portion of the sprayer itself is ~hown solid and not in cross-section for purposes of clarity.
The sprayer is in the normal or at rest condition.
Figure 2 is a view similar to that of Figure 1 except that the sprayer is in the pressurized or spraying condition and swirl passages are shown in its nose piece.
-4a-Figure 3 is a view of the outlet wall side face of spin element 17c takenin the direction indicated by the arrows 3-3 in Figure 1 and showing the swirl passages in its face.
Figure 4 is a view of the inner side of the outlet wall taken in the dixection indicated by the arrows 4-4 in Figure 2 and showing its swlrl passages.
DETAILED DESCRIPTION OF THE-INVENTION
With reference to Figure 1 of the drawings, a trigger operated pump type sprayer is shown having a body 10 w~th ~vlindrical nose cavity or bore 11 into which a closely fitted nose piece 12 is inserted by a force fit to effect a fluid -tight seal therebetween. An outlet or orifice 13 is provided in the front or outer wall of nose piece 12 and the interior of nose piece 12 is hollow as shown to provide a chamber 14.
To the right of chamber 14 in Figure 1, is a passage 15 in body 10 which opens into chamber 14 and defines an annular shoulder 16 in the manner shown. Inside chamber 14, and inserted before nose piece 12 is forced in place, is a unitary molding including a spring, a valve poppet and a swirl chamber cover or spin element all in a one-piece integral molded assembly 17 which, when it is molded, is purposely made longer than chamber 14 so that the spring 17a will be slightly compressed~
between the end walls of chamber 14 when nose piece 12 is put in place in body 10.
The unitary molding 17 includes, as previously men-tioned, a spring 17a, a transversely deployed poppet disc or valve piece 17b and a transversely deployed outlet blocking spin element or disc 17c all attached together with the spring 17a between the other two portions and connected to each of them by molded posts 17d and 17e. Disc 17c is preferably attached to post 17d by an arch or arcuate bridge 17f which ~3l3~
is open at its center and spans disc 17c connecting with it near the disc's periphery and with pQSt 17d at the peak of its archO With this construction, the face of disc 17c opposite the outlet is kept flat without any possible mold "sink" at its center to cause distortion sufficient to prevent it from seating properly on the outlet wall of chamber 14.
Again with reference to Figure-l, the inner outlet wall of chamber 14 is plain and flat but disc 17c has one or more channel-like passages 18, 19 formed in its face which lead from its outer extremities inwardly toward outlet 13 and communicate with it but are directed tangentially thereto.
These are shown more clearly in Figure 3. Disc 17c rests firmly against the face of the outlet wall which acts as a wall ko define passages 18, 19 by closing their otherwise open channels to make a four-sided passage or c~nduit. Disc 17c, however, is of smaller diameter than that of the outlet wall so that the outer or end portions of passages 18 re-main uncovered and open to chamber 14 but three or more small discs centering integrall~ molded bosses 17g can be used on disc 17c spaced equally about its periphery to keep it away from the wall and thus to preclude any possible partial blocking of the fluid by the resting of the disc 17c against the inner side wall of nose piece 12 due to non-centering. The overall diameter of the disc 17c and the bosses 17g is less than the internal diameter of nose piece 12 to allow clearance for free movement of disc 17c longitudinally of nose piece 12.
At the opposite end of chamber 14 is a flat, round disc or po~et 17b which in the normal and unpressurized condition of the sprayer is urged against annular shoulder 16 by the biasing effect of the slight compression of spring 17a to block off passage 15 to prevent the flow of liquid past that location.
\ - 6 -~ ~3~5{1 In another version of the nose piece 12, swirl passages 20, 21 are provided in the nose piece 12 itself rather than in the spin element or disc 17c as shown in the view of the inner face of the outlet wall in Figure 4. These passages are again directed tangentially to outlet 13.
OPERATION OF THE INVENTION
With reference to Figure 1, the sprayer is operated in the usual manner by manipulation of the trigger 22 back and forth to pump liquid up from a container (not shown~
into passage 15 where it exerts pressure on valve poppet 17b.
When this pressure becomes sufficient to further compress spring 17a, poppet 17b is forced to the left in Figure 2 leaving annular shoulder 16 and thus permitting pressurized fluid to pass from passage 15 into chamber 14 which it fills.
When the chamber 14 is completely filled, the fluid enters swirl passages 20, 21 and enters outlet orifice 13 with a rotary spin or swirl motion induced by the force couple caused by the tangential approach of the fluid through passages 20, 21 to the outlet. The fluid then is forcefully ejected from outlet 13 in a spray due to the pressure upon it and the swirl effect.
When the fluid which was originally pumped into the sprayer from its container becomes exhausted, the trigger is allowed to return to its normal at rest position whereupon a slight vacuum occurs in passage 15 and normal atmospheric pres-sure inside chamber 14 returns poppet 17b to its seat on shoulder 16. The cycle can be repeated again and again to cause-the sprayer to spray as desired until the contents of the container is exhausted.
With the configuration shown in Figures 1 and 3, the operation is identical with the fluid entering the passages 18, 19 in disc or spin element 17c instead of in the nose piece , 3~S~
12 itself.
It is to be noted that the disc 17b remains seated on the inside of the outlet wall at all times in both configurations and does not move.
~ he configuration of the spring 17a is preferably that of an S as shown in the drawing but other sinuous spring shapes can be used if desired such as a simple loop, split S, double S, helix or other sinuous shape providing that it fits within the chamber 14 without binding or interference with its walls, particularly when compressed. The spring rate or force required to compress the spring can be varied during the molding of the assembly by altering the molding dies to provide various dimensions for the spring and also by the use of various materials with different elastic properties or tensile strengths. It can, for instance, be made weaker by! making the spring narrower or thinner or stronger by increasing its width and thickness.
It is preferred that the assembly be molded of a plastic material such as polypropylene or polyethylene but other plastics can be used provided that they have the qualities required to provide compatibility with the fluids being sprayed, dimensional stability sufficient to prevent undue chanyes in the spring characteristics, to prevent binding in chamber 14 or to prevent changes in flatness, the resiliency needed to provide the spring effect, and, good moldability.
While there have been shown and described and pointed out the fundamental novel features of the invention as applied to a preferred embodiment, it will be understood that ~arious omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art, without departing from the spirit of the invention. It is the intention, ' .
: . :
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therefore to be limited only as indicated by the ~cope of the following claims.
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. .
_ Figure 1 is a partial cross-section in front elevation of that portion o the sprayer which includes the in-vention. The unitary assembly including the spring and a portion of the sprayer itself is ~hown solid and not in cross-section for purposes of clarity.
The sprayer is in the normal or at rest condition.
Figure 2 is a view similar to that of Figure 1 except that the sprayer is in the pressurized or spraying condition and swirl passages are shown in its nose piece.
-4a-Figure 3 is a view of the outlet wall side face of spin element 17c takenin the direction indicated by the arrows 3-3 in Figure 1 and showing the swirl passages in its face.
Figure 4 is a view of the inner side of the outlet wall taken in the dixection indicated by the arrows 4-4 in Figure 2 and showing its swlrl passages.
DETAILED DESCRIPTION OF THE-INVENTION
With reference to Figure 1 of the drawings, a trigger operated pump type sprayer is shown having a body 10 w~th ~vlindrical nose cavity or bore 11 into which a closely fitted nose piece 12 is inserted by a force fit to effect a fluid -tight seal therebetween. An outlet or orifice 13 is provided in the front or outer wall of nose piece 12 and the interior of nose piece 12 is hollow as shown to provide a chamber 14.
To the right of chamber 14 in Figure 1, is a passage 15 in body 10 which opens into chamber 14 and defines an annular shoulder 16 in the manner shown. Inside chamber 14, and inserted before nose piece 12 is forced in place, is a unitary molding including a spring, a valve poppet and a swirl chamber cover or spin element all in a one-piece integral molded assembly 17 which, when it is molded, is purposely made longer than chamber 14 so that the spring 17a will be slightly compressed~
between the end walls of chamber 14 when nose piece 12 is put in place in body 10.
The unitary molding 17 includes, as previously men-tioned, a spring 17a, a transversely deployed poppet disc or valve piece 17b and a transversely deployed outlet blocking spin element or disc 17c all attached together with the spring 17a between the other two portions and connected to each of them by molded posts 17d and 17e. Disc 17c is preferably attached to post 17d by an arch or arcuate bridge 17f which ~3l3~
is open at its center and spans disc 17c connecting with it near the disc's periphery and with pQSt 17d at the peak of its archO With this construction, the face of disc 17c opposite the outlet is kept flat without any possible mold "sink" at its center to cause distortion sufficient to prevent it from seating properly on the outlet wall of chamber 14.
Again with reference to Figure-l, the inner outlet wall of chamber 14 is plain and flat but disc 17c has one or more channel-like passages 18, 19 formed in its face which lead from its outer extremities inwardly toward outlet 13 and communicate with it but are directed tangentially thereto.
These are shown more clearly in Figure 3. Disc 17c rests firmly against the face of the outlet wall which acts as a wall ko define passages 18, 19 by closing their otherwise open channels to make a four-sided passage or c~nduit. Disc 17c, however, is of smaller diameter than that of the outlet wall so that the outer or end portions of passages 18 re-main uncovered and open to chamber 14 but three or more small discs centering integrall~ molded bosses 17g can be used on disc 17c spaced equally about its periphery to keep it away from the wall and thus to preclude any possible partial blocking of the fluid by the resting of the disc 17c against the inner side wall of nose piece 12 due to non-centering. The overall diameter of the disc 17c and the bosses 17g is less than the internal diameter of nose piece 12 to allow clearance for free movement of disc 17c longitudinally of nose piece 12.
At the opposite end of chamber 14 is a flat, round disc or po~et 17b which in the normal and unpressurized condition of the sprayer is urged against annular shoulder 16 by the biasing effect of the slight compression of spring 17a to block off passage 15 to prevent the flow of liquid past that location.
\ - 6 -~ ~3~5{1 In another version of the nose piece 12, swirl passages 20, 21 are provided in the nose piece 12 itself rather than in the spin element or disc 17c as shown in the view of the inner face of the outlet wall in Figure 4. These passages are again directed tangentially to outlet 13.
OPERATION OF THE INVENTION
With reference to Figure 1, the sprayer is operated in the usual manner by manipulation of the trigger 22 back and forth to pump liquid up from a container (not shown~
into passage 15 where it exerts pressure on valve poppet 17b.
When this pressure becomes sufficient to further compress spring 17a, poppet 17b is forced to the left in Figure 2 leaving annular shoulder 16 and thus permitting pressurized fluid to pass from passage 15 into chamber 14 which it fills.
When the chamber 14 is completely filled, the fluid enters swirl passages 20, 21 and enters outlet orifice 13 with a rotary spin or swirl motion induced by the force couple caused by the tangential approach of the fluid through passages 20, 21 to the outlet. The fluid then is forcefully ejected from outlet 13 in a spray due to the pressure upon it and the swirl effect.
When the fluid which was originally pumped into the sprayer from its container becomes exhausted, the trigger is allowed to return to its normal at rest position whereupon a slight vacuum occurs in passage 15 and normal atmospheric pres-sure inside chamber 14 returns poppet 17b to its seat on shoulder 16. The cycle can be repeated again and again to cause-the sprayer to spray as desired until the contents of the container is exhausted.
With the configuration shown in Figures 1 and 3, the operation is identical with the fluid entering the passages 18, 19 in disc or spin element 17c instead of in the nose piece , 3~S~
12 itself.
It is to be noted that the disc 17b remains seated on the inside of the outlet wall at all times in both configurations and does not move.
~ he configuration of the spring 17a is preferably that of an S as shown in the drawing but other sinuous spring shapes can be used if desired such as a simple loop, split S, double S, helix or other sinuous shape providing that it fits within the chamber 14 without binding or interference with its walls, particularly when compressed. The spring rate or force required to compress the spring can be varied during the molding of the assembly by altering the molding dies to provide various dimensions for the spring and also by the use of various materials with different elastic properties or tensile strengths. It can, for instance, be made weaker by! making the spring narrower or thinner or stronger by increasing its width and thickness.
It is preferred that the assembly be molded of a plastic material such as polypropylene or polyethylene but other plastics can be used provided that they have the qualities required to provide compatibility with the fluids being sprayed, dimensional stability sufficient to prevent undue chanyes in the spring characteristics, to prevent binding in chamber 14 or to prevent changes in flatness, the resiliency needed to provide the spring effect, and, good moldability.
While there have been shown and described and pointed out the fundamental novel features of the invention as applied to a preferred embodiment, it will be understood that ~arious omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art, without departing from the spirit of the invention. It is the intention, ' .
: . :
39~
therefore to be limited only as indicated by the ~cope of the following claims.
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Claims (9)
1. An assembly formed as a unitary molding including a sinuous spring member and a flat faced valve member connected to one end of said spring member and deployed transversely with respect to said spring member with a spin element connected to the other end of said spring member, said spin element comprising a flat plate deployed transversely with respect to said spring member and connected thereto by an arcuate bridge member.
2. An assembly as specified in claim 1 wherein said sinuous spring member is an S-shaped member.
3. An assembly formed as a unitary molding for controlling fluid flow from a conduit to an orifice for ejection therefrom as spray comprising an outlet valve associated with said conduit, elongated biasing sinuous spring member for said valve, and spray producing means associated with said orifice, said outlet valve including a flat face valve member with said spring member being connected at one end thereof to said valve member, said spray producing means including a flat plate, said flat plate being connected to the spring member by an arcuate bridge member and said spring member being connected at the other end thereof to said flat plate.
4. For use in a fluid dispenser having a conduit terminating in a walled exit chamber formed at the end of said conduit through which fluid flows for ejection in a spray from an orifice located in a wall of said chamber when pumped therethrough from a supply of fluid, an assembly for controlling the flow of fluid in said conduit and ejecting said fluid from said orifice in a spray, said assembly comprising a unitary molding including, as integral portions thereof, poppet valve means in said chamber for shutting off fluid flowing thereinto at said conduit end, a spin element oppositely disposed from said poppet valve means in said chamber, and a sinuous spring member in said chamber compressed between valve means and said spin element for urging said valve means toward said conduit end and said spin element toward said orifice located in said wall of said chamber, said spin element being joined to said sinuous spring member in spaced apart relation by a molded arch, said arch supportably extending to said element peripherally from said sinuous member.
5. The assembly as in Claim 4 in which said poppet valve means is integrally connected to said member by a molded post.
6. The assembly as in Claim 4 in which said spring element is integrally connected to said member by a molded post.
7. The assembly as in Claim 4 in which said poppet valve means is generally disc shaped and has a flat surface extending transversely with respect to said member, said surface under urging of said poppet valve means by said member closing said conduit end and shutting off flow of fluid thereat.
8. The assembly as in Claim 4 wherein said arch is joined to said sinuous member by means of a molded post.
9. The assembly as in Claim 4 wherein said sinuous spring member is joined to said arch at substantially the highest point thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85122777A | 1977-11-14 | 1977-11-14 | |
| US851,227 | 1977-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1113050A true CA1113050A (en) | 1981-11-24 |
Family
ID=25310281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000316058A Expired CA1113050A (en) | 1977-11-14 | 1978-11-09 | Unitary valve and spring assembly |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPS5490610A (en) |
| AU (1) | AU528434B2 (en) |
| BE (1) | BE872020A (en) |
| BR (1) | BR7807433A (en) |
| CA (1) | CA1113050A (en) |
| CH (1) | CH628720A5 (en) |
| DE (1) | DE2849034A1 (en) |
| DK (1) | DK503778A (en) |
| ES (1) | ES475060A1 (en) |
| FR (1) | FR2408782B1 (en) |
| GB (1) | GB2007807B (en) |
| IL (1) | IL55917A (en) |
| IT (1) | IT1107752B (en) |
| MX (1) | MX147588A (en) |
| NL (1) | NL7811271A (en) |
| NO (1) | NO783812L (en) |
| NZ (1) | NZ188671A (en) |
| SE (1) | SE7811620L (en) |
| ZA (1) | ZA785777B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2495022A1 (en) * | 1980-12-01 | 1982-06-04 | Bailly Comte Ets | Spray gun with moulded head - is integral with hand lever which displaces piston to lift sprung piston valve off seat and permit spray through piston cap |
| DE19604518B4 (en) * | 1995-02-18 | 2004-04-22 | Klaus Schreiner | Injection packer for hole closures in masonry |
| FR2751704B1 (en) * | 1996-07-29 | 1998-10-23 | Basso Jean Jacques Louis Andre | INSERT WITH ANTI-RETURN FUNCTION AND APPLICATION TO AN ANKLE FOR THE INJECTION OF A FLUID PRODUCT INTO A STRUCTURE TO BE TREATED OR FILLED |
| GB9919423D0 (en) * | 1999-08-18 | 1999-10-20 | Lucas France | Valve |
| CN101791598A (en) * | 2010-03-30 | 2010-08-04 | 余姚市中豪电器有限公司 | Shower nozzle structure |
| FR3004128B1 (en) | 2013-04-08 | 2017-01-13 | Aptar France Sas | IMPROVED SPRAY HEAD. |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3130877A (en) * | 1960-10-07 | 1964-04-28 | Formold Plastics Inc | Dispenser and valves for same |
| FR95049E (en) * | 1967-07-20 | 1970-03-27 | Chavanoz Moulinage Retorderie | New process for manufacturing a fancy yarn and device therefor. |
| US3685739A (en) * | 1970-08-07 | 1972-08-22 | Afa Corp | Liquid dispensing apparatus |
| US3827609A (en) * | 1973-06-18 | 1974-08-06 | A Arnaldo | Valve for liquid sprayer |
| US3841602A (en) * | 1973-11-29 | 1974-10-15 | W Mildern | Valve |
| AU507516B2 (en) * | 1975-10-29 | 1980-02-21 | The Afa Corporation | Diaphragm pump dispenser |
| US4082223A (en) * | 1975-12-06 | 1978-04-04 | Yoshino Kogyosho Co., Ltd. | Trigger type spraying device |
| US4153203A (en) * | 1977-03-02 | 1979-05-08 | Tetsuya Tada | Trigger type sprayer |
-
1978
- 1978-10-13 ZA ZA00785777A patent/ZA785777B/en unknown
- 1978-10-16 NZ NZ188671A patent/NZ188671A/en unknown
- 1978-10-25 AU AU41043/78A patent/AU528434B2/en not_active Expired
- 1978-11-09 CA CA000316058A patent/CA1113050A/en not_active Expired
- 1978-11-09 JP JP13836978A patent/JPS5490610A/en active Pending
- 1978-11-10 SE SE7811620A patent/SE7811620L/en unknown
- 1978-11-10 IL IL55917A patent/IL55917A/en unknown
- 1978-11-11 DE DE19782849034 patent/DE2849034A1/en not_active Ceased
- 1978-11-13 NO NO783812A patent/NO783812L/en unknown
- 1978-11-13 CH CH1165778A patent/CH628720A5/en not_active IP Right Cessation
- 1978-11-13 DK DK503778A patent/DK503778A/en not_active Application Discontinuation
- 1978-11-13 IT IT51880/78A patent/IT1107752B/en active
- 1978-11-13 BR BR7807433A patent/BR7807433A/en unknown
- 1978-11-13 MX MX175585A patent/MX147588A/en unknown
- 1978-11-13 FR FR7832011A patent/FR2408782B1/en not_active Expired
- 1978-11-14 GB GB7844486A patent/GB2007807B/en not_active Expired
- 1978-11-14 NL NL7811271A patent/NL7811271A/en not_active Application Discontinuation
- 1978-11-14 ES ES475060A patent/ES475060A1/en not_active Expired
- 1978-11-14 BE BE191740A patent/BE872020A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2007807B (en) | 1982-05-26 |
| IT1107752B (en) | 1985-11-25 |
| NZ188671A (en) | 1982-12-21 |
| NO783812L (en) | 1979-05-15 |
| AU4104378A (en) | 1980-05-01 |
| GB2007807A (en) | 1979-05-23 |
| SE7811620L (en) | 1979-05-15 |
| DE2849034A1 (en) | 1979-09-27 |
| MX147588A (en) | 1982-12-15 |
| FR2408782B1 (en) | 1985-07-12 |
| BR7807433A (en) | 1979-07-24 |
| IL55917A0 (en) | 1979-01-31 |
| DK503778A (en) | 1979-05-15 |
| JPS5490610A (en) | 1979-07-18 |
| ES475060A1 (en) | 1979-12-01 |
| FR2408782A1 (en) | 1979-06-08 |
| AU528434B2 (en) | 1983-04-28 |
| ZA785777B (en) | 1979-09-26 |
| CH628720A5 (en) | 1982-03-15 |
| NL7811271A (en) | 1979-05-16 |
| IL55917A (en) | 1980-10-26 |
| IT7851880A0 (en) | 1978-11-13 |
| BE872020A (en) | 1979-03-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |