Bottle cap for a bird feeder

[0001] The present invention relates generally to bird feeders. More particularly, the present invention relates to a bottle cap and a bottle for use as a hummingbird feeder.

[0002] Millions of people around the world enjoy watching and feeding wild birds. These people love to feed the wild birds in their backyards or on their balconies so that they can enjoy watching the birds. While there are many types of wild birds that people like to watch and feed, the hummingbird is a favorite for many people. Hummingbirds are attracted to sweet nectar produced by flowers. As a substitute for the sweet nectar, people use water sweetened by sugar in hummingbird feeders to attract and feed the hummingbirds.

[0003] A typical hummingbird feeder is comprised of a fluid reservoir for holding the sugar water which is conveyed to a plurality of simulated flowers. The hummingbirds insert their long thin beak into holes in the simulated flowers to drink the sugar water. While the sugar water is an effective substitute for natural flower nectar, the use of sweetened water has several drawbacks.

[0004] In warm climates, the sweetened water has a tendency to ferment which can quickly lead to the production of bacteria, mold and mildew. The bacteria, mold and mildew will discolor the sweetened water and may begin to grow inside the fluid reservoir. As a result, the hummingbird feeder can quickly turn into an unsightly mess. In addition, the bacteria, mold and mildew can also be harmful and fatal to the hummingbirds. As a result, hummingbird feeders must be cleaned on a regular basis, for example, every three or four days. The constant hassle of cleaning the hummingbird feeder has caused many people to stop using their hummingbird feeders.

[0005] Thus, there is a need for a new hummingbird feeder which overcomes the problems cited above.

[0006] It is therefore a feature and advantage of the present invention to provide a hummingbird feeder which requires minimal or no cleaning at all.

[0007] According to one aspect of the invention, a bottle cap is provided with at least one feeding port, wherein the bottle cap can be screwed onto a plastic bottle thereby turning most plastic bottles into a hummingbird feeder.

[0008] According to another aspect of the invention, a disposable plastic bottle with a cap with at least one feeding port is disclosed which is pre-filled with a nectar to create a hummingbird feeder.

[0009] In accordance with one embodiment of the present invention, a bottle cap for fitting on a mouth of a bottle is disclosed. The bottle cap comprises: a first chamber with a opening for receiving the mouth of the bottle, wherein threads are provided on an inner wall of the first chamber so that the cap can be screwed onto the mouth of the bottle; a second chamber with a closed bottom; a sealing ring located between the first and second chambers so as to provide a seal between the bottle cap and the mouth of the bottle when the bottle cap is screwed onto the mouth of the bottle, wherein liquid is free to move between the first and second chambers; and at least one feeding port in a side wall of the second chamber.

[0010] In accordance with one embodiment of the present invention, a bird feeder is disclosed. The bird feeder comprises: a fluid reservoir and a mouth; a cap which is attached to the mouth of the fluid reservoir, the cap comprising: a first chamber with a opening for receiving the mouth, wherein threads are provided on a wall of the first chamber so that the cap can be screwed onto the mouth; a second chamber with a closed bottom; a sealing ring located between the first and second chambers so as to provide a seal between the cap and the mouth when the cap is screwed onto the mouth, wherein liquid is free to move between the first and second chambers; and at least one feeding port in the wall of the second chamber.

[0011] There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described below and which will form the subject matter of the claims appended hereto.

[0012] In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein, as well as the abstract, are for the purpose of description and should not be regarded as limiting.

[0013] As such, those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.

[0026] According to one embodiment of the invention, a bottle cap is provided with at least one feeding port, wherein the bottle cap can be screwed onto a plastic bottle thereby turning most plastic bottles into a hummingbird feeder. In this embodiment, when the feeder needs to be cleaned, the bottle is simply thrown away and a new bottle is used. Thus, only the bottle cap needs to be cleaned if not thrown away as well. According to another embodiment of the invention, a disposable plastic bottle with a cap with at least one feeding port is disclosed which is pre-filled with a nectar, such as water mixed with a pure white sugar solution to create a hummingbird feeder. In this embodiment, the entire feeder is disposable and is thrown away when the nectar is gone or the feeder needs to be cleaned. Thus, the hassle of cleaning the feeder is completely eliminated.

[0027] FIG. 1 illustrates a side view of a bottle cap 10 according to one embodiment of the invention. The bottle cap 10 comprises an opening 11 and a side wall 13 with threads 14 so as to allow the bottle cap 10 to be screwed onto the mouth of a bottle (not illustrated). The bottle cap 10 has a bottom 12 and a side wall 13. The bottle cap 10 is divided into two fluid chambers 15, 16 by a seal 20. As illustrated in FIG. 2, the seal 20 extends inward from the side wall 13 and continues around the inside of the cap 10. The seal 20 seals the bottle cap 10 to the mouth of the bottle when the bottle cap 10 is screwed onto and tightened to the bottle. The seal 20 helps to create a partial vacuum in the hummingbird feeder which will be explained in more detail below. It will be understood by those skilled in the art that fluid is allowed to travel between the two fluid chambers 15, 16 when the bottle cap 10 is attached to the bottle. In this embodiment, the first and second fluid chambers 15, 16 have substantially the same shape but the invention is not limited thereto. For example, the first and second chamber 15, 16 may have very different shapes as will be described in more detail below with reference to FIGS. 6-7.

[0028] Returning to FIG. 1, the bottle cap 10 has at least one feeding port 2 1. It will be understood by those skilled in the art that the bottle cap 10 may have any number of feeding ports 21 and the invention is not limited to any specific number. In this embodiment of the invention, each feeding port 21 is comprised of a hollow stem 17, a simulated attractor 18, wherein the simulated attractor 18 has at least one opening 19. As illustrated in FIG. 3, the simulated attractor 18 can have the shape and appearance of a flower but the invention is not limited thereto. The stem 17 is connected to an opening 22 in the side wall 13 of the second chamber 16 so that fluid in the second chamber 16 can pass into the hollow stem 17. The hollow stem 17 has a sufficient width so as to allow a hummingbird to stick his beak through the opening 19 into the hollow stem 17 to drink the nectar. In addition, the hollow stem 17 has a sufficient length, for example, ¼ to ½ of an inch, so as to prevent the nectar from simply flowing out of the opening 19. In other word, the nectar will flow part of the way into the stem 17 and then will stop due to surface tension between the nectar and the walls of the stem 17 and the partial vacuum created in the hummingbird feeder by the seal 20. It will be understood by those skilled in the art that the hollow stem 17 can have various lengths depending in part by the diameter of the hollow stem 17 and the invention is not limited thereto. In addition, the inner diameter of the hollow stem may be tapered near the opening 22 and get larger as the stem 17 gets closer to the opening 19.

[0029] According to one embodiment of the invention, the hollow stem 17 projects outward from the bottle cap 10 and is substantially parallel to the bottom 12 of the bottle cap 10 as is illustrated in FIG. 1. According to another embodiment of the invention illustrated in FIG. 4, the hollow stems 17 can be angled upward from a position parallel to the bottom 12 of the bottle cap 10 so as to help prevent the nectar from leaking out of the openings 19. It will be understood by those skilled in the art that the hollow stems 17 can be angled upward relative to the bottom 12 at any angle and the invention is not limited thereto.

[0030] According to another embodiment of the invention, a perch 80 maybe connected to the outside of the bottom of the bottle cap 10 as illustrated in FIGS. 10-11. The perch 80 has a hub 82 which extends down from the bottom of the bottle cap 10. A first end of the hub 82 may be connected to the bottom of the bottle cap in a variety of manners, for example, two sided adhesive 83, glue, snap into a groove in the bottom of the bottle cap 10, etc., and the invention is not limited thereto. The second end of the hub 82 is attached to a plurality of spokes 84 which radiate out from the hub 82. The plurality of spokes 84 support an outer ring 85. In use, birds can stand on the outer ring 85 and access the nectar through the openings 19 in the simulated attractors 18.

[0031] The bottle cap 10 and all of its components are preferably made of plastic. The bottle cap 10 and all of its components may be a single piece of plastic, formed through, for example, an injection and/or blow molding process, or be formed of multiple pieces which are connected together and the invention is not limited thereto.

[0032] In use as part of a hummingbird feeder 30, the bottle cap 10 is attached to a bottle 31 which is filled with a nectar 35 as illustrated in FIG. 5. The threads 14 of the bottle cap 10 mate with the threads 32 of the bottle 31 and the bottle cap 10 is screwed down and tightened against the seal 20. According to one embodiment of the invention, the bottle cap 10 is reusable and can be attached to any bottle 31 with a standard sized mouth. For example, many commonly used plastic bottles for soda, water, juice, etc., have standard sized mouths and can be used with the bottle cap 10 to form the hummingbird feeder 30. In this embodiment, the user pours the nectar 35 into the bottle 31 and screws on the bottle cap 10 and hangs the feeder from a hanging device 33. When the nectar is gone, goes bad or the feeder needs to be cleaned, the user can simply remove the cap and throw away the bottle 31. After cleaning the bottle cap 10, the user can fill a different (clean) bottle with the nectar and then attach the bottle cap 10. This invention substantially reduces the amount of time spent cleaning the feeder 30.

[0033] As mentioned above, the bottle cap 10 may comprise first and second fluid chambers 15, 16 which have different shapes. For example, as illustrated in FIGS. 6-7, the second fluid chamber 16 may have a saucer shape and the invention is not limited thereto. In this embodiment, the saucer shaped fluid chamber 16 has a section 42 with a slight curvature on the top of the fluid chamber 16. The fluid chamber 16 has at least one feeding port 44 located on the section 42. Each feeding port 44 comprises a simulated attractor 46 and an opening 48 and may also comprise a hollow stem.

[0034] According to another embodiment of the invention, the feeder 30 with the bottle 31 and the bottle cap 10 can be sold to the user pre-filled with nectar. In this embodiment where the feeder 30 is completely disposable, the feeding ports 21 are sealed by a sealant film or plug 40 to prevent the feeder 30 from leaking prior to use. In use, the feeder 30 may have a hook or loop 33 to which a rope, string or a chain can be attached to allow the feeder 30 to be hung. Alternatively, the feeder 30 may be hung using some other hanging device. In this embodiment, when the feeder 30 needs to be cleaned, the entire feeder 30 is thrown away and a new feeder 30 is then used. Thus, the hassle of cleaning the feeder 30 is completely eliminated.

[0035] According to another embodiment of the invention, a pre-filled feeder 50 is disclosed and can have a variety of shapes. As illustrated in FIGS. 8-9, the feeder 50 can have, for example, a saucer shape design. The feeder 50 has a saucer shaped reservoir 52. The saucer shaped reservoir 52 has a section 53 with a slight curvature. The fluid reservoir 52 has at least one feeding port 54 located on the section 53. Each feeding port 54 may have a simulated attractor 55 and an opening 56 and may also comprise a hollow stem. The openings 56 are covered by a sealant film or plug 58 to prevent the feeder 50 from leaking prior to use.

[0036] The feeder 50 also has a hanging rod 60 with a hole 62 for hanging the feeder 50. The hanging rod 60 can be made of plastic or metal and the invention is not limited thereto. The hanging rod 60 may screw or snap or in some other way be connected to the reservoir 52.

[0037] The many features and advantages of the invention are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the invention which fall within the true spirits and scope of the invention. Further, since numerous modifications and variations will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.