Method and Apparatus for Dispensing Tubing
There is disclosed a container for receiving coiled tubing and an aperture for controlled dispensing of the tubing. The tubing and the aperture are configured to engage one another and resist unintentional retraction and dispensing of the tubing into and from the container.
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The invention relates to dispensing tubing and, more particularly, to a method and apparatus for controlled dispensing of tubing from a reusable dispenser.
BACKGROUNDTubing is available in numerous materials and sizes. Non-rigid tubing is generally made of a plastic material, such as vinyl or polyethylene. Tubing size is determined based on the inner diameter, which defines the cross section of the cavity within the tubing, and the outer diameter. The difference between the inner and outer diameter defines the tubing thickness.
Tubing generally has a smooth, annular inner surface configured to minimize pressure loss as a fluid passes therethrough. Further, the smooth outer surface provides a tight seal between the tubing and a connecting member, such as a valve.
Tubing is generally sold in predetermined lengths, such as 50 or 100 feet. In order to conveniently deliver longer lengths, the tubing is generally packaged as a coil or wound around a spool. Coiled tubing includes a central opening with the tubing oriented around the central opening in a helical arrangement. The tubing is coiled around the central opening until the entire length of tubing is positioned around the central opening. Coiled tubing is packaged to maintain the coiled configuration of the tubing, such as with shrink wrap extending around the outer perimeter of the coiled tubing or with straps or bands extending around a section of the tubing. The resultant product is not easy to handle, as the securing packaging is prone being punctured or ripped, which compromises the ability of the securing packaging to maintain the coiled configuration of the tubing. Further, the securing packaging can be damaged by other elements, such as tools, sticks, and other sharp objects. It is also difficult to dispense because once the shrink wrap or bands are first removed the coil is unbound and free to unwind.
Tubing also can be wrapped about a central spool member. The spool includes a generally cylindrical body around which the tubing is wrapped and enlarged end stops to prevent the tubing from coming off the ends of the cylindrical body. The free end of the tubing extends out from the wrapped tubing and away from the spool. To maintain the wrapped configuration, the free end of the tubing can be further secured to the spool. If the free end is not secured after use, the tubing can come unwrapped from the spool.
Further, because the free end extends from the outer edge of the wrapped tubing, in order to remove the tubing from the spool the relative positions thereof must be manipulated. In other words, to remove the tubing from the spool, the spool must be rotated relative to the free end of the tubing. Alternatively, the free end of the tubing can be shifted around the spool in a direction opposite the wrapping direction. As a result, tubing can be difficult to remove from a spool, particularly where the work space is limited.
In addition, the packaging for the coiled tubing and the spool wrapped tubing is generally not reusable due to the costs and effort associated with reusing the packaging. As a result, the packaging used is configured to be cost effective and not for repeated field use. In particular, packaging usually includes shrink wrap, which is prone to punctures and tearing, and cardboard, which has little to no functionality after being exposed to water. As a result, the existing packaging for transporting and dispensing tubing are not well suited for field use, particularly when all the tubing in a given package is not utilized in a single use or in the presence of water, tools or other sharp objects.
In
The tubing dispenser 2 is operable to provide a reusable container 4 for loading and reloading a coil of tubing 32 therein. The container 4 further provides a sturdy, resilient receptacle which can withstand being exposed to water and/or other elements commonly found during field installation of irrigation tubing. The lid 6 is preferably configured to provide a water tight seal with the container 4, and the container protects the tubing from damage, such as being pinched or crushed.
The container 4 preferably includes a circular bottom portion 20 extending between a cylindrical upstanding sidewall 22. However, other configurations, such as a four-sided, five-sided, six-sided, or eight-sided sidewall construction can be employed, and the bottom portion can be shaped with a corresponding number of edges.
As shown in
The sidewall 22 is further configured to have a height 24 from the bottom portion 20, which is greater than the height 36 of the coiled tubing 32 to be received within the container 4. Preferably, the sidewall 22 extends a distance 38 above the coiled tubing 32, such as about 2 inches to about 4 inches. The distance 38 is sufficient to permit the tubing 8 to be effectively withdrawn from the container 4 through the dispensing aperture 10, as will be discussed further below.
Optionally, as shown in
The upper edge 12 of the container 4 is configured to be engaged by or with the lid 6, thereby securing the lid 6 on the upper edge 12 of the container 4. Further, the engagement between the upper edge 12 and the lid 6 preferably provides a waterproof interface as will be discussed in greater detail below.
The lid 6, as shown in
The engaging portion 50 of the lid 6 is configured to engage the upper edge 12 of the sidewall 22 and provide a seal therebetween. The engaging portion 50 and upper edge 12 of the sidewall 22 can be configured to include any known engagement mechanism 54, such as opposing annular ribs or annular rib a groove 56 configured to firmly and releasable secure the upper edge 12 of the sidewall 22 therein as shown in
The aperture 10 of the tubing dispenser 2 is configured to receive the tubing 8 therein and permit controlled dispensation of the tubing 8 from the container 4. The aperture 10 can be located at any suitable location in the tubing dispenser 2, such as, but not limited to, the bottom portion 20 of the container 4, the upstanding sidewalls 22 of the container, or the lid 6. Preferably, the aperture 10 is located so that the tubing 8 can freely pass therethrough and extends at an angle alpha obliquely to the longitudinal axis 58 of the sidewall 22 of the container 4. Preferably, alpha ranges from at least 0 degrees to about 60 degrees, preferably 15 degrees to 45 degrees.
In one embodiment, as shown in
The aperture 10 is defined by an aperture edge 62. In a preferred embodiment, the aperture 10 has a diameter 64 of about 0.0625 inches larger than the outer diameter 66 of the tubing 8.
In an alternative configuration, as shown in
In an alternative configuration, as shown in
Other configurations of the neck portion 68 are contemplated, including multiple neck portions 68 and other neck portion edge configurations. Further, as shown in
In a further embodiment, as shown in
Preferably, the tubing dispenser 2 includes the aperture 10 pre-formed therein. However, the aperture 10 can be made by any known methods, such as by cutting or drilling at the point of first use.
The tubing dispenser 2 can further include an aperture plug or cap configured to cover, or substantially cover the aperture 10. The aperture plug or cap can be located on either the outside of the tubing dispenser 2 or on the inside of the tubing dispenser 2, preferably along the outside of the tubing dispenser 2. The aperture plug or cap can be removable or replaceable with respect to the tubing dispenser 2. Examples of removable aperture plugs or caps include, but are not limited to, a member configured to extend across the aperture 10 and affixed to the tubing dispenser 2 by an adhesive, a portion of the tubing dispenser 2 having a perforated edge which may be forcibly removed, or a rubber plug fitted into the aperture. Exemplary removable aperture plugs or caps include a snapped or threaded connection to allow the cover to be releasably attached to the tubing dispenser 2.
As shown in
Alternatively, the container 4 is configured to receive spooled tubing 88 therein, as shown in
The tubing 8 comprises a plastic suitable for irrigation tubing. Preferably, the tubing 8 is polyethylene. As shown in
The tubing 8 further comprises an inner surface 100 and an outer surface 18. Generally, the inner surface 100 is substantially smooth, so as to minimize the pressure drop of any fluid passing through the tubing 8. The outer surface 18 can be smooth 102, or can include a textured surface 104. The textured surface 104 of the tubing 8 can include ridges, bumps, or teeth. As shown in
The steps of loading and reloading coiled tubing 32 into the container 4 are illustrated in
To utilize the tubing 8 for controlled dispensing, the tubing 8 is shifted, if necessary, such that the tubing 8 extends through a head portion 70 of the aperture 10. The tubing 8 is grasped adjacent the free end 86 and pulled away from the container 4, such that the at least a portion of the tubing 8 is withdrawn from the container 4. Once the tubing 8 is withdrawn to the desired length, the tubing 8 can then be readjusted within the aperture 10, if necessary, so that the tubing 8 is received in a neck portion 68 of the aperture 10 to provide a quick lock of the tube end 86. Tubing 8 can then be cut to the appropriate length, thereby creating a new free end 86 of the tubing 8 extending out from and above the lid 6 of the container 4.
Retraction or migration of the tubing 8 into the container 4 is resisted or prevented by a frictional engagement 108 between the tubing 8 and the aperture edge 62. When the aperture 10 includes a neck portion 68, such as shown in
Further, the angle alpha (α) at which the tubing 8 is canted and extends through the aperture 10 is selected to maximize contact between the aperture edge 62 and the outer surface 18 of the tubing 8. As shown in
While the invention has been particularly described with specific reference to particular method and product embodiments, it will be appreciated that various alterations, modifications, and adaptations may be based on the present disclosure, and are intended to be within the scope of the invention as defined by the following claims.
Claims
1. A method comprising:
- (a) providing a dispenser;
- (b) opening the dispenser;
- (c) placing tubing in the dispenser;
- (d) feeding a first end of the tubing through an aperture in the dispenser; and
- (e) closing the dispenser,
- (f) dispensing the tube from the dispenser in a controlled manner due to resistance being provided by an engagement between the tube and an edge of the aperture.
2. The method of claim 1 further including the steps:
- (g) dispensing the tubing through the aperture to a desired length;
- (h) providing the aperture with a configuration to cant the tubing into engagement with the aperture edge at two distinct positions; and
- (i) cutting the tubing to the desired length.
3. The method of claim 2 wherein the step of placing tubing in the dispenser includes placing tubing with a textured exterior in the dispenser.
4. The method of claim 1 wherein the step of placing tubing in the dispenser includes placing polyethylene tubing in the dispenser.
5. The method of claim 1 wherein providing the dispenser includes providing a dispenser with at least one upstanding sidewall about an axis, and comprising further the step of extending the tubing through the aperture obliquely to the axis for dispensing.
6. The method of claim 1 wherein placing the tubing in the dispenser includes placing spooled tubing in the dispenser.
7. The method of claim 1 wherein placing the tubing in the dispenser includes placing coiled tubing in the dispenser.
8. The method of claim 7 including locating the free end of the tubing in a central opening of the coiled tubing.
9. The method of claim 1 wherein opening the dispenser includes removing a lid from a container and closing the dispenser includes securing the lid on the container.
10. The method of claim 1 including providing the aperture in the tubing dispenser.
11. The method of claim 10 wherein providing the aperture includes removing an aperture cover from over the aperture.
12. The method of claim 10 wherein providing the aperture includes forming the aperture in the tubing dispenser.
13. A tubing dispenser comprising:
- a sealed container;
- a dispensing aperture defined by an aperture edge of the sealed container;
- tubing configured to be received within the container;
- an outer diameter of the tubing configured to be received in and extend through the aperture; and
- a friction engagement between the tubing and the edge configured to control movement of the tubing through the dispensing aperture.
14. The tubing dispenser of claim 13 wherein the sealed container includes a container having an upper edge; and
- a lid configured to be removably secured to the upper edge of the container.
15. The tubing dispenser of claim 13 wherein the friction engagement includes a textured outer surface on the tubing.
16. The tubing dispenser of claim 15 wherein the textured outer surface has a surface roughness of about 0.0015 inches.
17. The tubing dispenser of claim 15 wherein the textured outer surface is configured to provide a diffuse reflection of light.
18. The tubing dispenser of claim 15 wherein the textured outer surface provides a gripping surface for connecting the tubing to a connection member.
19. The tubing dispenser of claim 15 wherein the aperture is configured to grip the tubing and provide the friction engagement therebetween.
20. The tubing dispenser of claim 13 wherein the aperture includes a first portion configured to permit the tubing to travel therethrough and a second portion extending from the first portion configured to receive the tubing therein and restrict movement therethrough.
21. The tubing dispenser of claim 13 wherein the tubing is 0.25 inches outer diameter.
22. The tubing dispenser of claim 13 wherein the aperture is configured to have an aperture diameter that is about 0.0625 inches larger than an outer diameter of the tubing.
23. The tubing dispenser of claim 13 wherein the tubing is pre-coiled.
24. The tubing dispenser of claim 23 wherein the pre-coiled tubing includes an outer wrap configured to resist uncoiling of the pre-coiled tubing.
25. The tubing dispenser of claim 23 wherein the pre-coiled tubing is configured to self unwind and the sealed container including an inner sidewall surface configured to be engaged by and restrict the unwinding of the pre-coiled tubing.
26. The tubing dispenser of claim 13 wherein the tubing is spooled.
27. The tubing dispenser of claim 26 wherein the sealed container includes spaced grooves configured to receive and allow rotation of the flanges of the spooled tubing therein.
28. The tubing dispenser of claim 13 wherein an inner surface portion of the sealed container includes a friction reducing coating.
29. The tubing dispenser of claim 13 wherein the upper edge of the container and the outer portion of the cover define a water tight interface therebetween.
30. The tubing dispenser of claim 13 wherein the container is water resistant.
31. The tubing dispenser of claim 13 wherein the tubing comprises polyethylene.
32. The tubing dispenser of claim 13 wherein the tubing consists essentially of polyethylene.
Type: Application
Filed: Jun 15, 2009
Publication Date: Dec 16, 2010
Applicant: RAIN BIRD CORPORATION (Azusa, CA)
Inventors: Samir Shah (Chino Hills, CA), Stanley N. Wagar (Southside, AL)
Application Number: 12/484,945
International Classification: B65H 49/08 (20060101); B65H 49/20 (20060101);