POWERED TREE CONSTRUCTION

• US 20190081442A1
• Filed: 11/09/2018
• Published: 03/14/2019
• Est. Priority Date: 10/28/2011
• Status: Active Grant

• Current Assignee: Polygroup Macau Limited (MDF Commerce, Inc.)
• Original Assignee: Polygroup Macau Limited (MDF Commerce, Inc.)
• Inventors: Leung, Chi Yin Alan, Tong, Ricky, Kwok, Chi Kin Samuel, He, Chang-Jun
• Granted Patent: US 10,404,019 B2
• Time in Patent Office: Days
• CPC Class Codes: A47G 33/06 Artificial Christmas trees
• CPC Class Codes: H01R 13/10 Sockets for co-operation with pins or blades
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/38 having concentrically or coaxially arranged contacts
• CPC Class Codes: H01R 31/00 Coupling parts supported only by co-operation with counterpart
• CPC Class Codes: H01R 33/06 with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other

Abstract

A power transfer system to facilitate the transfer of electrical power between tree trunk sections of an artificial tree is disclosed. The power transfer system can advantageously enable neighboring tree trunk sections to be electrically connected without the need to rotationally align the tree trunk sections. Power distribution subsystems can be disposed within the trunk sections. The power distribution subsystems can comprise a male end, a female end, or both. The male ends can have prongs and the female ends can have voids. The prongs can be inserted into the voids to electrically connect the power distribution subsystems of neighboring tree trunk sections. In some embodiments, the prongs and voids are designed so that the prongs of one power distribution subsystem can engage the voids of another power distribution subsystem without the need to rotationally align the tree trunk sections.

Claims

1. A lighted artificial tree, comprising:

a first tree portion, including;

a first trunk portion,

a first power distribution subsection, and

a first electrical connector, the first power distribution subsection and first electrical connector housed at least in part within the first trunk portion, the first electrical connector including;

a first body portion; and

a first electrical contact set, the first electrical contact set in electrical connection with the first power distribution subsection,

the first body portion including a plurality of ridges;

a second tree portion, including;

a second trunk portion;

a second power distribution subsection; and

a second electrical connector, the second power distribution subsection and second electrical connector housed at least in part within the second trunk portion, the second electrical connector including;

a second body portion; and

a second electrical contact set, the second electrical contact set in electrical connection with the second power distribution subsection,

the second body portion including a plurality of grooves,

wherein the first tree portion is configured to couple to the second tree portion such that the first electrical contact set and the second electrical contact set form an electrical connection and the plurality of grooves of the second body portion receive the plurality of ridges of the first body portion, thereby electrically connecting the first power distribution subsection to the second power distribution subsection and mechanically coupling the first tree portion to the second tree portion.

2. The lighted artificial tree of claim 1, wherein the first electrical contact set and/or the second electrical contact set are coaxial.

3. The lighted artificial tree of claim 1, wherein a first end of the first body portion and a first end of the second body portion are substantially circular.

4. The lighted artificial tree of claim 3, wherein the ridges are distributed circumferentially about the first end of the first body portion and the grooves are distributed circumferentially about the first end of the second body portion, and wherein the ridges are equidistantly spaced about the first end of the first body portion and the grooves are equidistantly spaced about the first end of the second body portion.

5. The lighted artificial tree of claim 1, wherein the second electrical connector is a female electrical connector, and the second electrical contact set comprises first and second coaxial electrical contacts, the second electrical connector further comprising an axially extending cylindrical wall disposed around the first and second coaxial electrical contacts.

6. The lighted artificial tree of claim 5, wherein the axially extending cylindrical wall is an outer wall, the second electrical connector further comprising an inner wall disposed concentrically within the outer wall, the first coaxial electrical contact being disposed within the inner wall and the second coaxial electrical contact being disposed between the outer wall and the inner wall.

7. The lighted artificial tree of claim 1, wherein the ridges have rounded or pointed distal ends, and the grooves are configured as recesses to receive the rounded or pointed distal ends.

8. The lighted artificial tree of claim 1, wherein each ridge of the plurality of ridges is positioned apart from any adjacent ridge.

9. The lighted artificial tree of claim 1, wherein the plurality of ridges is a first plurality of ridges and the plurality of grooves is a first plurality of grooves, and wherein the second body includes a second plurality of ridges where each ridge of the second plurality of ridges is disposed adjacent to a groove of the first plurality of grooves, and the first body includes a second plurality of grooves where each groove of the second plurality of grooves is disposed adjacent to a ridge of the first plurality of ridges, and wherein the first tree portion is further configured such that the second plurality of grooves of the first body portion receive the second plurality of ridges of the second body portion.

10. The lighted artificial tree of claim 1, wherein the plurality of ridges are electrically isolated from the first electrical contact set.

11. A lighted artificial tree, comprising:

a first tree portion, including;

a first trunk portion;

a first power distribution subsection; and

a first electrical connector, the first power distribution subsection and first electrical connector housed at least in part within the first trunk portion, the first electrical connector including;

a first electrical contact set, the first electrical contact set in electrical connection with the first power distribution subsection; and

a first plurality of teeth, the first plurality of teeth electrically isolated from the first electrical contact set; and

a second tree portion, including;

a second trunk portion;

a second power distribution subsection; and

a second electrical connector, the second power distribution subsection and second electrical connector housed at least in part within the second trunk portion, the second electrical connector including;

a second electrical contact set, the second electrical contact set in electrical connection with the second power distribution subsection; and

a second plurality of teeth,

wherein the first tree portion is configured to couple to the second tree portion such that the first electrical contact set and the second electrical contact set form an electrical connection and the second plurality of teeth receive the first plurality of teeth, thereby electrically connecting the first power distribution subsection to the second power distribution subsection and mechanically coupling the first tree portion to the second tree portion such that rotation of the first tree portion about an axis of the lighted artificial tree with respect to the second tree portion and rotation of the second tree portion about the axis of the lighted artificial tree with respect to the first tree portion are substantially prohibited.

12. The lighted artificial tree of claim 11, wherein the first electrical contact set is coaxial and the second electrical contact set is coaxial.

13. The lighted artificial tree of claim 11, wherein the second electrical connector is a female electrical connector, and the second electrical contact set comprises first and second coaxial electrical contacts, the second electrical connector further comprising an axially extending cylindrical wall disposed around the first and second coaxial electrical contacts.

14. The lighted artificial tree of claim 13, wherein the axially extending cylindrical wall is an outer wall, the second electrical connector further comprising an inner axially extending cylindrical wall disposed within the outer wall, the first coaxial electrical contact being disposed within the inner wall and the second coaxial electrical contact being disposed between the outer wall and the inner wall.

15. The lighted artificial tree of claim 11, wherein the first electrical contact set comprises first and second contacts, and the second electrical contact set comprises third and fourth contacts, and wherein the first and second contacts and/or the third and fourth contacts are coaxial.

16. The lighted artificial tree of claim 11, wherein a first end of the first electrical connector and a first end of the second electrical connector are substantially circular, and wherein the first plurality of teeth are distributed circumferentially about the first end of the first electrical connector and the second plurality of teeth are distributed circumferentially about the first end of the second electrical connector.

17. The lighted artificial tree of claim 11, wherein the first plurality of teeth and the second plurality of teeth comprise a non-conducting material.

18. The lighted artificial tree of claim 11, wherein the first plurality of teeth and the second plurality of teeth have tips that are rounded or pointed.

19. The lighted artificial tree of claim 11, wherein each tooth of the first plurality of teeth is separated from any adjacent tooth of the first plurality of teeth by a void configured to receive a corresponding tooth from the second plurality of teeth, and each tooth of the second plurality of teeth is separated from any adjacent tooth of the second plurality of teeth by a void configured to receive a corresponding tooth from the first plurality of teeth.

20. An artificial tree, comprising:

a first trunk section comprising a first electrical connector, the first electrical connector comprising;

a central electrical contact located along a central axis of the first trunk section; and

a first alignment mechanism comprising;

a first plurality of distinct, axially extending projections, each axially extending projection of the first plurality of distinct, axially extending projections comprising first and second angled surfaces, wherein the proximal ends of the first and second angled surfaces are set apart by a first predetermined distance and the distal ends of the first and second angled surfaces are connected to form a point; and

a first plurality of recesses, wherein each recess of the first plurality of recesses comprises an area separating adjacent projections of the first plurality of distinct, axially extending projections by a second predetermined distance;

a second trunk section comprising a second electrical connector, the second electrical connector comprising;

a central void located along a central axis of the second electrical connector and having an electrical contact disposed therein, the central void configured to engage the first electrical connector such that the central electrical contact of the first electrical connector engages the electrical contact disposed within the central void of the second electrical connector; and

a second alignment mechanism comprising;

a second plurality of distinct, axially extending projections, each axially extending projection of the second plurality of distinct, axially extending projections comprising first and second angled surfaces, wherein the proximal ends of the first and second angled surfaces are set apart by the first predetermined distance and the distal ends of the first and second angled surfaces are connected to form a point; and

a second plurality of recesses, wherein each recess of the second plurality of recesses comprises an area separating adjacent projections of the second plurality of distinct, axially extending projections by the second predetermined distance,

wherein the engagement of the first electrical connector and the second electrical connector results in an electrical connection capable of conducting electricity between the first trunk section and the second trunk section, and

wherein engagement of the first electrical connector and the second electrical connector constrains rotation of the first trunk section with respect to the second trunk section.

21. The artificial tree of claim 20, wherein the central electrical contact comprises a first contact and a second contact, the first contact and the second contact being coaxial.

22. The artificial tree of claim 20, wherein the central void is substantially cylindrical and is configured to receive the central electrical contact.

23. The lighted artificial tree of claim 20, wherein the first trunk section further comprises a first plurality of branches and a first light string disposed about at least one of the first plurality of branches, the first light string comprising a plurality of lamp systems, and wherein the second trunk section further comprises a second plurality of branches and a second light string disposed about at least one of the second plurality of branches, the second light string comprising a plurality of lamp systems.

24. The lighted artificial tree of claim 23, wherein the first trunk section further comprises a first power distribution subsection, the first power distribution subsection comprising one or more electrical wires and connecting the central electrical contact of the first electrical connector to the first light string.

25. The artificial tree of claim 23, wherein each of the first plurality of lamp systems comprises a bypass mechanism configured such that, if one lamp of the first plurality of lamp systems malfunctions, each remaining lamp of the first plurality of lamp systems will continue to function.

26. The artificial tree of claim 20, wherein the second electrical connector further comprises an axially extending cylindrical wall disposed around the central void.

27. A method of electrically and mechanically coupling a first tree portion of a lighted artificial tree to a second tree portion, the method comprising:

positioning a first tree portion, the first tree portion having (i) a first generally hollow trunk portion having a first trunk wall and (ii) a first electrical connector having a first alignment mechanism with a sloped engagement portion, upright along a vertical axis;

aligning a second tree portion, the second tree portion having (i) a second generally hollow trunk portion having a second trunk wall and (ii) a second electrical connector having a second alignment mechanism with a sloped engagement portion, with the first tree portion and along the vertical axis;

causing the second tree portion to move axially such that the first tree portion receives an end of the second tree portion and the first trunk wall is engaged with the second trunk wall;

causing the second alignment mechanism'"'"'s sloped engagement portion to initially contact the first alignment mechanism'"'"'s sloped engagement portion at a first rotational alignment; and

allowing the second electrical connector to rotate relative the first electrical connector, thereby rotating the second tree portion into a second rotational alignment and a final engagement position such that the first tree portion and second tree portion are mechanically coupled and electrically connected.

28. The method of claim 27, wherein the first alignment mechanism comprises a first plurality of distinct, axially extending teeth, each axially extending tooth of the first plurality of distinct, axially extending teeth comprising first and second sloped engagement portions, wherein the proximal ends of the first and second sloped engagement portions are set apart by a first predetermined distance and the distal ends of the first and second sloped engagement portions are connected to form a point, and

wherein the second alignment mechanism comprises a second plurality of distinct, axially extending teeth, each axially extending tooth of the second plurality of distinct, axially extending teeth comprising first and second sloped engagement portions, wherein the proximal ends of the first and second sloped engagement portions are set apart by the first predetermined distance and the distal ends of the first and second sloped engagement portions are connected to form a point.

29. The method of claim 27, wherein the final engagement position is one of a plurality of potential engagement positions.

30. The method of claim 27, wherein the first electrical connector comprises a first and a second coaxial electrical contact.