Liquid bird feeder

• US 7,891,319 B2
• Filed: 10/08/2009
• Issued: 02/22/2011
• Est. Priority Date: 05/16/2005
• Status: Active Grant

• Current Assignee: Woodstream Corporation
• Original Assignee: Woodstream Corporation
• Inventors: Stone, John, Harting, David, McLachlan, Oliver
• Primary Examiner(s): Collins; Timothy D
• Assistant Examiner(s): O'Hara; Brian M
• Application Number:
  US12/588,262
• Publication Number:
  US 20100132618A1
• Time in Patent Office: 502 Days
• Field of Search: 119/52.2, 119/57.8, 119/57.9, 119/51.01, 119/72, 119/74, 119/77
• US Class Current: 119/72
• CPC Class Codes: A01K 39/012 filling automatically , e.g. by gravity from a reserve
• CPC Class Codes: A01K 39/02 Drinking appliances A01K39/04 takes precedence
• CPC Class Codes: A01K 39/0206 Drinkers especially adapted for feeding hummingbirds

Abstract

A liquid bird feed is provided with a liquid container having a sealable top opening and a bottom opening, a liquid tray adapted to immerse the bottom opening in liquid, and a valve mechanism adapted to close the bottom opening to enable the liquid container to be filled through the sealable top opening.

Claims

1. A top-fill liquid bird feeder for providing liquid nectar to hummingbirds, comprising:

a liquid container configured to contain a volume of liquid nectar and having a sealable top opening and a bottom portion with a flow opening;

a seal element adapted to close said top opening and with an airtight seal;

a liquid tray configured to connect with said container bottom portion to allow liquid nectar from said container to flow into said tray through said flow opening so that a vacuum is created in an upper end of said liquid container to retain liquid in said container when the top opening is sealed by the seal element, said liquid tray having a cover and including at least one feeding port through which hummingbirds can access the liquid nectar in said tray; and

a valve mechanism including a control member movable in a substantially horizontal plane to selectively open and close said flow opening through which liquid in said container flows into said liquid tray, closure of said flow opening by said valve mechanism enabling said liquid container to be filled by removing said seal element and adding liquid nectar through said top opening while, at the same time, blocking leakage of any remaining nectar still in said liquid container through said flow opening when the vacuum in the upper end is lost upon removal of said seal element.

2. The top-fill liquid bird feeder of claim 1, wherein said tray includes an attaching element configured to connect said tray to said liquid container.

3. The top-fill liquid bird feeder of claim 2, wherein said attaching element includes at least one liquid port that is aligned and misaligned with at least one liquid port in said movable member to respectively open and close said flow opening upon horizontal movement of said movable member.

4. The top-fill liquid bird feeder of claim 1, wherein said movable member includes at least one liquid port that is aligned and misaligned with said flow opening in said liquid container to respectively open and close said flow opening upon horizontal movement of said movable member.

5. The top-fill liquid bird feeder of claim 2, wherein said attaching element includes a collar adapted to receive the bottom portion of said liquid container.

6. The top-fill liquid bird feeder of claim 5, wherein said collar is axially closed at a lower end thereof by said liquid tray.

7. The top-fill liquid bird feeder of claim 5, wherein said bottom portion of said liquid container includes a vertically oriented extension that is received within said collar.

8. The top-fill liquid bird feeder of claim 1, wherein said liquid tray includes a tray cover adapted to substantially close said liquid tray, said feeding port passing through said cover with a narrow elongated passageway that is sized to allow access by long-beaked hummingbirds while preventing access by bees, liquid in said liquid tray being accessible to hummingbirds only through said feeding port when said feeder is in use.

9. The top-fill liquid bird feeder of claim 1, wherein said movable member is rotatable around a vertical axis.

10. The top-fill liquid bird feeder of claim 9, wherein said movable member includes a sidewall having at least one port adapted to selectively align and misalign with said flow opening for respectively allowing and preventing flow of liquid from said container into said liquid tray when said movable member is rotated around said vertical axis.

11. The top-fill liquid bird feeder of claim 10, wherein said movable member is adapted to be at least partially immersed in liquid within said liquid tray and includes an actuator which extends above a normal liquid level in said liquid tray.

12. The top-fill liquid bird feeder of claim 11, wherein said liquid tray includes a tray cover through which said feeding port passes, said tray cover having a slot adapted to allow said actuator to be operable from outside of said tray cover to rotate said movable member.

13. A top-fill liquid hummingbird feeder, comprising:

a liquid container for receiving hummingbird nectar through a sealable top opening and dispensing said nectar through a bottom opening;

a container cover adapted to engage said liquid container to close said top opening and create an airtight seal therewith;

a covered liquid tray defining an enclosure accessible by at least one feeding port and adapted to immerse said bottom opening in said nectar and thereby allow a vacuum created in said liquid container to retain liquid in said container when the top opening is sealed by the cover,

an attaching element for securing said container to said covered liquid tray; and

a valve mechanism movable in a substantially horizontal plane to open and close said bottom opening by manipulating an element outside of said enclosure, closure of said bottom opening enabling said liquid container to be filled with nectar through said sealable top opening when said cover is removed while retaining any remaining nectar still in said liquid container.

14. The hummingbird feeder of claim 13, wherein said valve mechanism includes an opening therein adapted to be selectively aligned and misaligned with said bottom opening to respectively open and close said bottom opening upon movement of said member.

15. The hummingbird feeder of claim 13, wherein said valve mechanism includes a rotatable member having a port therein adapted to be selectively aligned and misaligned with said bottom opening to respectively open and close said bottom opening upon rotation of said member around a vertical axis, at least a part of said rotatable member being contained within said liquid tray and covered by said liquid tray cover.

16. The hummingbird feeder of claim 15, wherein said rotatable element includes an outwardly extending elongated actuating member to facilitate rotation of said rotatable member by a user, said actuating member also rotating around said vertical axis.

17. A method of filling a top-fill hummingbird feeder having a liquid container configured to contain a volume of liquid nectar, said liquid container including a top opening closable with a seal element to create an airtight seal and a bottom portion with a flow opening, a liquid tray adapted to immerse the flow opening in liquid to allow a vacuum created in an upper end of said liquid container to retain liquid in said container when the top opening is closed by the seal element, said tray including an attachment element configured to connect said tray to said liquid container, said liquid tray having a cover and including at least one feeding port through which hummingbirds can access the liquid nectar in said tray, and a valve mechanism including a movable control member to selectively open and close said flow opening, said method comprising the steps of:

placing and retaining the bird feeder in a substantially vertical orientation;

moving said control member to a first position to close said flow opening, closure of said flow opening by said valve mechanism enabling said liquid container to be filled while blocking leakage of any remaining nectar still in said liquid container through said flow opening when the vacuum in the upper end is lost upon removal of said seal element;

removing said seal element, causing loss of the vacuum in the upper end of the container;

adding a desired amount of liquid nectar to said container through said top opening while said valve mechanism'"'"'s closure of said flow opening prevents nectar from leaking out of the liquid container;

sealing said top opening with said seal element; and

moving said control member to a second position to open said flow opening which allows nectar to flow from said container into said liquid tray until said flow opening is immersed in said nectar at which time a vacuum is created in said liquid container upper end which prevents additional nectar from flowing into said liquid tray.

18. The method as set forth in claim 17, wherein the steps of moving said control member to a first position and to a second position include moving said control member in a substantially horizontal plane.

19. The method as set forth in claim 18, wherein the steps of moving said control member to a first position and to a second position include rotating said control member around a substantially vertical axis.

20. The method as set forth in claim 17, wherein said control member includes an actuator that is operable from outside said liquid tray, said steps of moving said control member to a first position and to a second position including manually grasping the actuator by a user to rotate said control member in a substantially horizontal plane.