Patents Assigned to Evergreen Tree Limited
  • Patent number: 11300255
    Abstract: A system of lighting for an artificial tree or other decoration that allows easy replacement of small sub-strings of luminaries. Each sub-string contains N luminaries, where N is an integer around 10, where the N luminaries are wired in series. Extender cables can be supplied that contain parallel splits so that the different sub-strings are operated in parallel. The extender cable can attach to a master power source that supplies the constant voltage needed to power each sub-string. The exact voltage is determined by the number N and by the voltage requirement for each of the luminaries. Each sub-string has a plug that mates with a receptacle on either an extender cable, or on the master power device. Single point failures only cause one sub-string to go dark. The physical arrangement with plugs and receptacles allows easy replacement of an individual sub-string that is dark because of a failed luminary.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: April 12, 2022
    Assignee: Evergreen Tree Limited
    Inventor: Cheng-che Tsai
  • Patent number: 10845011
    Abstract: A system of lighting for an artificial tree or other decoration that allows easy replacement of small sub-strings of luminaries. Each sub-string contains N luminaries, where N is an integer around 10, where the N luminaries are wired in series. Extender cables can be supplied that contain parallel splits so that the different sub-strings are operated in parallel. The extender cable can attach to a master power source that supplies the constant voltage needed to power each sub-string. The exact voltage is determined by the number N and by the voltage requirement for each of the luminaries. Each sub-string has a plug that mates with a receptacle on either an extender cable, or on the master power device. Single point failures only cause one sub-string to go dark. The physical arrangement with plugs and receptacles allows easy replacement of an individual sub-string that is dark because of a failed luminary.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: November 24, 2020
    Assignee: Evergreen Tree Limited
    Inventor: Cheng-che Tsai
  • Patent number: 9184539
    Abstract: A radially uniform spring-biased intra-pole plug connector and transformer outside the trunk configuration for an electric artificial tree is described. The radially uniform plug comprises a springed-tip and a prong, and allows the tree trunk segments to be connected at any point along their 360 degree circumference. The plug connector resembles the structure of a car cigarette lighter. A mold is used to sandwich the plug within the trunk. A plug portion of the plug connector is housed in one trunk segment, and a receptacle portion is housed in a different trunk segment, such that when the trunk segments are assembled, the plug is connected, illuminating the tree. The plug allows the electrical wiring to be hidden and housed within the trunk, providing safety, convenience to the user and giving the tree a cleaner appearance. The transformer outside the trunk configuration makes the trunk safer, more lightweight and less bulky.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: November 10, 2015
    Assignee: Evergreen Tree Limited
    Inventor: Cheng-Che Tsai
  • Patent number: 8956183
    Abstract: A radially uniform spring-biased intra-pole plug connector and transformer outside the trunk configuration for an electric artificial tree is described. The radially uniform plug comprises a springed-tip and a prong, and allows the tree trunk segments to be connected at any point along their 360 degree circumference. The plug connector resembles the structure of a car cigarette lighter. A mold is used to sandwich the plug within the trunk. A plug portion of the plug connector is housed in one trunk segment, and a receptacle portion is housed in a different trunk segment, such that when the trunk segments are assembled, the plug is connected, illuminating the tree. The plug allows the electrical wiring to be hidden and housed within the trunk, providing safety, convenience to the user and giving the tree a cleaner appearance. The transformer outside the trunk configuration makes the trunk safer, more lightweight and less bulky.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: February 17, 2015
    Assignee: Evergreen Tree Limited
    Inventor: Cheng-che Tsai
  • Publication number: 20140349517
    Abstract: A radially uniform spring-biased intra-pole plug connector and transformer outside the trunk configuration for an electric artificial tree is described. The radially uniform plug comprises a springed-tip and a prong, and allows the tree trunk segments to be connected at any point along their 360 degree circumference. The plug connector resembles the structure of a car cigarette lighter. A mold is used to sandwich the plug within the trunk. A plug portion of the plug connector is housed in one trunk segment, and a receptacle portion is housed in a different trunk segment, such that when the trunk segments are assembled, the plug is connected, illuminating the tree. The plug allows the electrical wiring to be hidden and housed within the trunk, providing safety, convenience to the user and giving the tree a cleaner appearance. The transformer outside the trunk configuration makes the trunk safer, more lightweight and less bulky.
    Type: Application
    Filed: May 24, 2013
    Publication date: November 27, 2014
    Applicant: Evergreen Tree Limited
    Inventor: Cheng-che Tsai
  • Publication number: 20140179159
    Abstract: A radially uniform spring-biased intra-pole plug connector and transformer outside the trunk configuration for an electric artificial tree is described. The radially uniform plug comprises a springed-tip and a prong, and allows the tree trunk segments to be connected at any point along their 360 degree circumference. The plug connector resembles the structure of a car cigarette lighter. A mold is used to sandwich the plug within the trunk. A plug portion of the plug connector is housed in one trunk segment, and a receptacle portion is housed in a different trunk segment, such that when the trunk segments are assembled, the plug is connected, illuminating the tree. The plug allows the electrical wiring to be hidden and housed within the trunk, providing safety, convenience to the user and giving the tree a cleaner appearance. The transformer outside the trunk configuration makes the trunk safer, more lightweight and less bulky.
    Type: Application
    Filed: December 26, 2012
    Publication date: June 26, 2014
    Applicant: EVERGREEN TREE LIMITED
    Inventor: Cheng-che Tsai
  • Patent number: 8753152
    Abstract: A radially uniform spring-biased intra-pole plug connector and transformer outside the trunk configuration for an electric artificial tree is described. The radially uniform plug comprises a springed-tip and a prong, and allows the tree trunk segments to be connected at any point along their 360 degree circumference. The plug connector resembles the structure of a car cigarette lighter. A mold is used to sandwich the plug within the trunk. A plug portion of the plug connector is housed in one trunk segment, and a receptacle portion is housed in a different trunk segment, such that when the trunk segments are assembled, the plug is connected, illuminating the tree. The plug allows the electrical wiring to be hidden and housed within the trunk, providing safety, convenience to the user and giving the tree a cleaner appearance. The transformer outside the trunk configuration makes the trunk safer, more lightweight and less bulky.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: June 17, 2014
    Assignee: Evergreen Tree Limited
    Inventor: Cheng-che Tsai