US2984813A - Lamp socket electrical connection - Google Patents

Lamp socket electrical connection Download PDF

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Publication number
US2984813A
US2984813A US42895A US4289560A US2984813A US 2984813 A US2984813 A US 2984813A US 42895 A US42895 A US 42895A US 4289560 A US4289560 A US 4289560A US 2984813 A US2984813 A US 2984813A
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United States
Prior art keywords
body
electrical connection
end
bores
wires
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Expired - Lifetime
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US42895A
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Bossi Fulvio
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FRANKEL ASSOCIATES Inc
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FRANKEL ASSOCIATES Inc
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Priority to US42895A priority Critical patent/US2984813A/en
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Publication of US2984813A publication Critical patent/US2984813A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05Two-pole devices
    • H01R33/06Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/09Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for baseless lamp bulb
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00Lighting devices or systems using a string or strip of light sources
    • F21S4/10Lighting devices or systems using a string or strip of light sources with light sources attached to loose electric cables, e.g. Christmas tree lights

Description

May 16, 1961 F. BOSS! LAMP SOCKET ELECTRICAL CONNECTION Filed July 14, 1960 FIG. 4-.

' JNVENTOR. 4 3 BY -rron ers Patented May 16, 1961 LAMP SOCKET ELECTRICAL CONNECTION Fulvio Bossi, Cinisello, Italy, assign'or to Frankel Associates, Inc., New York, N.Y., a corporation of New This invention relates generally to electrical devices and is especially concerned with a unique electrical connection.

It is one object of the present invention to provide an electrical connection which is extremely simple in construction, so as to be highly economical in manufacture.

The instant invention further provides an electrical connection which is entirely safe in use, and may be quickly and easily disconnected, disassembled and reassembled, if desired, without special skill or tools, and which is adapted to be produced in very small or miniature sizes for use in a wide variety of applications.

It is a further object of the present invention to provide an electrical connection having the advantageous characteristics mentioned in the preceding paragraphs, which is of the plug-and-socket type and adapted for use with illuminating lamps, say of the small incandescent 1 e.

While the electrical connection of the present invention has been primarily developed for use in illuminated decorations, as for Christmas trees and the like, and will be shown and illustrated hereinafter with particular reference thereto, it is understood that the concept and structure of the device is capable of many varied applications, all of which are intended to be comprehended herein.

Other objects of the present invention will become apparent upon reading the following specification and referring to the accompanying drawings, which form a material part of this disclosure.

The invention accordingly consists in the features of construction, combinations of elements, and arrangements of parts, which will be exemplified in the construction hereinafter described, and of which the scope will be indicated by the appended claims.

In the drawings:

Figure 1 is a longitudinal exploded view showing the elements of an electrical connection constructed in accordance with the teachings of the present invention, certain elements being shown in section and lead wires being omitted for clarity of understanding;

Figure 2 is a sectional elevational view similar to Figure 1, with certain of the elements assembled, prior to the final assembly step;

Figure 3 is a sectional view similar to Figure 2, showing the fully assembled electrical connection of the pres ent invention; and

Figure 4 is a lower-end View of either Figure 2 or 3.

Referring now more particularly to the drawings, and specifically to Figures 13, a socket is there generally designated 10, and includes an elongate body 11 having on one end thereof an axially extending annular wall or sleeve 12.

The body 11 may be of an axially tapering external configuration, as by its external surface 13, and terminates at a smaller-end surface 14 extending generally normal to the axis of the body 11. The body 11 terminates at its other end in a longitudinally outwardly facing wall 15 which is formed with a generally concave or dished recess 16; and the wall or sleeve 12 extends circumferentially about the recess 16, projecting from the end 15 of the body 11. The body 11 is further formed with a pair of generally parallel bores 17, extending longitudinally of the body inward through the end wall 14 and opening into the recess 16 for communication through the body end 15.

The socket 10, including the body 11 and sleeve 12, is preferably integrally fabricated, as by injection molding or other suitable method. If desired, a peripherally extending, outstanding flange 18 may be integrally provided on the sleeve 12 extending about its end remote from the body 11.

A pair of rod-like elements or tines 20 are fabricated of any suitable electrically conductive material, and are sized for frictional engagement in the bores 17. The lower and upper ends 21 and 22 of each tine 20 are preferably tapered to a point.

An additional body or plug, generally designated 24, may also be integrally fabricated of suitably resilient, insulating material, such as polyethylene or the like. The body 24 may be of a generally cylindrical external configuration, having opposite end walls 25 and 26 disposed generally normal to the axis of the body. The body 24, adjacent to its end 26 may be provided with a peripherally extending enlargement or shoulder 27; and the body is sized for removable engagement in the socket 10. Specifically, the body 24 is removably engageable within the sleeve 12 of the socket 10.

A generally semispherical or dish-shaped recess 28 is formed in the end wall 26 of the body 24, preferably coaxial therewith. Extending inward through the end wall 25 of the body 24 are a pair of generally parallel, longitudinal bores or passageways 29 which open into the recess 28 for communication outward beyond the body end wall 26. The bores or passageways 29 may be of the same internal configuration or diameter as that of the bores or passageways 17; and, the lateral spacing between the bores 29 may be the same as that between the bores 17. Hence, upon engagement of the body 24 within the sleeve 12, the bores 29 may be caused to align, respectively, with the bores 17.

An electrically actuated device is generally designated 34!, and for purposes of illustration shown as an incandescent lamp including a glass envelope 3 1 and a pair of wires 32 extending from the envelope.

In the condition of Figure 2v it will be observed that the envelope 31 of the lamp 30 has one end seated in the recess 28 of the body 24 and its wires 32 extending from the recess into respective bores 29. Further, each conducting wire 32 extends entirely through its respective receiving bore 219 beyond the body end wall 25, where the wires are each reversely bent, as at 33 to extend along the exterior surface of the body 24 toward and terminating short of the shoulder 27. This construction, as by the sharp reverse bends 33, serves to effectively maintain the lamp 30 with its envelope 31 seated in the recess 28.

Also shown in the condition of Figure 2 are the tines 20 respectively received in the bores 17 of the body 11. In particular, each tine 20 has its end region 21 engaged in a respective bore 17, and the end regions 22 of the tines extend out of the bores beyond the end wall 15. However, the end portions 22 of the tines 20 are preferably located within the sleeve 12 of the socket 10.

A pair of electrical conductors or wires 35 extend respectively into the bores 17, through the body end wall 14, and are each wedged or frictionally secured in position between a tine 20 and the internal surface of the receiving bore 17. Thus, firm electrical and mechanical connection is obtained between each wire 35 and its respective adjacent tine 20. An additional electrical conductor is shown at 36, representative of a series circuit. Of course, the electrical-connection structure of the instant invention may be applied with equal advantage in any type of circuit.

In the fully assembled condition of Figure 3, the plug or body 24 has been inserted into the open upper end of the sleeve 12, with the bores 29 of the plug 24 in respective alignment with the bores 17 of the socket 10. Thus, the ends 22 of the tines 2t) engage, respectively, in the bores 29 of the plug 24. By this assembly a firm frictional engagement is obtained between each tine 20 and the respective adjacent wire '32, to insure completion of an electrical circuit upon insertion of the plug 24 into the socket 10.

If it is desired to disassemble the connection of Figure 3, as for replacement of the lamp 30, or otherwise, it is only necessary to withdraw the lamp and plug 24, whereupon the lamp may be separated from the plug by mere bending of the wires 32. The socket 10 may also be disconnected from the wires 35, if desired, by merely removing the tines 20, or applying sufficient force to the Wires 35 to overcome the frictional engagement therewith of the tines. However, normal and even conditions of abuse are ineffective to cause inadvertent disassembly.

From the foregoing, it is seen that the present invention provides an electrical connection which fully accomplishes its intended objects and is Well-adapted to meet practical conditions of manufacture, assembly and use.

Although the present invention has been described in some detail by way of illustration and example for purposes of clarity of understanding, it is understood that certain changes and modifications may be made within the spirit of the invention and scope of the appended claims.

What is claimed is:

1. An electrical connection comprising a first body having a pair of generally parallel bores extending inward through one end of said first body and opening 4 through the other end thereof, a first pair of conductive wires respectively received in said bores extending inward through said one end of said first body, a pair of conductive tines each having one end frictionally engaged in a respective bore of said first body and extending therefrom, said tines each frictionally securing in position a respective one of said first pair of wires, a second body having a pair of generally parallel through bores and arranged with one end of said second body adjacent to said other end of said first body with the bores of said second body respectively frictionally receiving the other ends of said tines, and a second pair of wires located within the bores of said second body, respectively, and frictionally secured therein by said tines, whereby said tines each effect electrical connection between the wires of said first and second pairs of wires.

2. An electrical connection according to claim 1, in combination with a sleeve on said first body extending closely about said second body, said sleeve combining with said first body to define a socket receiving said second body.

3. An electrical connection according to claim 2, said additional pair of wires extending outward from the bores of said second body beyond said one end thereof and being reversely bent to lie along the exterior of said second body within said sleeve.

4. An electrical connection according to claim 3, in combination with an incandescent lamp on said other end of said second body connected to said second pair of wires and secured thereby to said second body.

5. An electrical connection according to claim 4, said second body being formed in the other end thereof with a recess receiving said incandescent lamp.

6. An electrical connection according to claim 4, said first and second bodies being fabricated of resilient material.

Shewmaker June 26, 1956 Kirk Feb. 19, 1957

US42895A 1960-07-14 1960-07-14 Lamp socket electrical connection Expired - Lifetime US2984813A (en)

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Application Number Priority Date Filing Date Title
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US42895A US2984813A (en) 1960-07-14 1960-07-14 Lamp socket electrical connection

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US2984813A true US2984813A (en) 1961-05-16

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Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106435A (en) * 1960-09-19 1963-10-08 Amphenol Borg Electronics Corp Electrical connectors
US3182185A (en) * 1963-02-21 1965-05-04 Joseph M Ahroni Plug-in type christmas tree light
US3233207A (en) * 1964-02-21 1966-02-01 Joseph M Ahroni Decorative light
US3327283A (en) * 1965-03-09 1967-06-20 Sylvania Electric Prod Photoflash lamp
US3371306A (en) * 1965-06-18 1968-02-27 Moranduzzo Dario Lamp socket and bulb assembly
US3377610A (en) * 1966-09-30 1968-04-09 Busch Plug for electrical cord
US3396363A (en) * 1967-01-16 1968-08-06 Nihon Yushutsu Denkyu Kyodo Ku Holding means for miniature bulbs
US3425027A (en) * 1967-07-03 1969-01-28 Ibm Plug-in panel lamp
US3522579A (en) * 1968-11-26 1970-08-04 Ryosuke Matsuya Socket for decorating light bulb and device for connecting the bulb to cords in the socket
DE1464149B1 (en) * 1963-11-29 1971-05-13 Amp Inc Amended to bracket a baseless lamp
US3591793A (en) * 1968-12-23 1971-07-06 Jack D Mckim Panel light assembly
US3611269A (en) * 1970-03-19 1971-10-05 Amp Inc Electrical circuit assembly
US3619598A (en) * 1969-02-27 1971-11-09 Mr Christmas Inc Decorative light ornaments
US3668603A (en) * 1970-09-02 1972-06-06 Itt Twist lock socket with connector
US3805215A (en) * 1973-02-20 1974-04-16 G Davis Plug-in type christmas tree light
DE2841114A1 (en) * 1978-09-21 1980-03-27 Weiner Norbert Thermal fuse for electrical equipment
US4491380A (en) * 1981-03-03 1985-01-01 Wu Jeng Shyong Receiving means adapted for a push-in type lamp socket
US4795373A (en) * 1987-05-15 1989-01-03 Cooper Industries, Inc. Lamp with plastic base
US4999751A (en) * 1989-09-05 1991-03-12 Chen Ming Hsiung Innovative structure of christmas light assembly
US5139343A (en) * 1992-01-14 1992-08-18 Lin Wen Hsiung Lamp holder with switch means
US5443399A (en) * 1994-02-01 1995-08-22 Jing; Wang S. Electric light bulb socket positioner for lamp assemblies
US5464354A (en) * 1994-02-01 1995-11-07 Akman; Alp T. Parallel and series plugs and wiring segments for ballon display
US5722860A (en) * 1996-12-09 1998-03-03 Pan; Wun Fang Watertight socket structure for use in a light bulb series
US5791940A (en) * 1996-10-18 1998-08-11 Chen; Chen-Yuan Bulb socket and socket holder assembly
US5921819A (en) * 1995-09-19 1999-07-13 Samsung Electronics Co., Ltd. Backlight including a replaceable light tube for a liquid crystal display
US7253556B1 (en) 2006-12-08 2007-08-07 Tech Patent Licensing, Llc Light string socket with mechanical shunt
US20080108251A1 (en) * 2006-10-25 2008-05-08 Qi Chen Light string
US7453194B1 (en) 2008-06-05 2008-11-18 Gibboney James W Mechanical shunt for use in the sockets of a string of lights
US7554266B1 (en) 2007-09-11 2009-06-30 Willis Electric Co., Ltd. Mechanical shunt for use in a socket in a string of lights
US20090317996A1 (en) * 2006-10-25 2009-12-24 Zheng Dianging Light string with improved shunt system
US20100003891A1 (en) * 2007-12-06 2010-01-07 Willis Electric Co., Ltd. Three dimensional displays having deformable constructions
US20100039019A1 (en) * 2008-08-18 2010-02-18 Zheng Dianqing Light string with improved shunt system
US20100289415A1 (en) * 2009-05-18 2010-11-18 Johnny Chen Energy efficient decorative lighting
US20110085327A1 (en) * 2009-10-14 2011-04-14 Johnny Chen Decorative light display with LEDs
US9044056B2 (en) 2012-05-08 2015-06-02 Willis Electric Co., Ltd. Modular tree with electrical connector
US9055777B2 (en) 2010-09-23 2015-06-16 Willis Electric Co., Ltd. Modular artificial lighted tree with decorative light string
US9157587B2 (en) 2011-11-14 2015-10-13 Willis Electric Co., Ltd. Conformal power adapter for lighted artificial tree
US9220361B1 (en) 2013-12-03 2015-12-29 Willis Electric Co., Ltd. Dual-voltage lighted artificial tree
US9222656B2 (en) 2011-11-14 2015-12-29 Willis Electric Co., Ltd. Conformal power adapter for lighted artificial tree
US9439528B2 (en) 2013-03-13 2016-09-13 Willis Electric Co., Ltd. Modular tree with locking trunk and locking electrical connectors
US9441800B1 (en) 2011-12-09 2016-09-13 Willis Electric Co., Ltd. Modular lighted artificial tree
US9572446B2 (en) 2012-05-08 2017-02-21 Willis Electric Co., Ltd. Modular tree with locking trunk and locking electrical connectors
US9648919B2 (en) 2012-05-08 2017-05-16 Willis Electric Co., Ltd. Modular tree with rotation-lock electrical connectors
US9671074B2 (en) 2013-03-13 2017-06-06 Willis Electric Co., Ltd. Modular tree with trunk connectors
US9883566B1 (en) 2014-05-01 2018-01-30 Willis Electric Co., Ltd. Control of modular lighted artificial trees
US9883706B2 (en) 2011-05-20 2018-02-06 Willis Electric Co., Ltd. Multi-positional, locking artificial tree trunk
US9894949B1 (en) 2013-11-27 2018-02-20 Willis Electric Co., Ltd. Lighted artificial tree with improved electrical connections
US10206530B2 (en) 2012-05-08 2019-02-19 Willis Electric Co., Ltd. Modular tree with locking trunk

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752580A (en) * 1953-04-27 1956-06-26 Charles A Shewmaker Printed circuit board and terminal connections
US2782391A (en) * 1952-10-02 1957-02-19 Gen Motors Corp Waterproof line connector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782391A (en) * 1952-10-02 1957-02-19 Gen Motors Corp Waterproof line connector
US2752580A (en) * 1953-04-27 1956-06-26 Charles A Shewmaker Printed circuit board and terminal connections

Cited By (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106435A (en) * 1960-09-19 1963-10-08 Amphenol Borg Electronics Corp Electrical connectors
US3182185A (en) * 1963-02-21 1965-05-04 Joseph M Ahroni Plug-in type christmas tree light
DE1464149B1 (en) * 1963-11-29 1971-05-13 Amp Inc Amended to bracket a baseless lamp
US3233207A (en) * 1964-02-21 1966-02-01 Joseph M Ahroni Decorative light
US3327283A (en) * 1965-03-09 1967-06-20 Sylvania Electric Prod Photoflash lamp
US3371306A (en) * 1965-06-18 1968-02-27 Moranduzzo Dario Lamp socket and bulb assembly
US3377610A (en) * 1966-09-30 1968-04-09 Busch Plug for electrical cord
US3396363A (en) * 1967-01-16 1968-08-06 Nihon Yushutsu Denkyu Kyodo Ku Holding means for miniature bulbs
US3425027A (en) * 1967-07-03 1969-01-28 Ibm Plug-in panel lamp
US3522579A (en) * 1968-11-26 1970-08-04 Ryosuke Matsuya Socket for decorating light bulb and device for connecting the bulb to cords in the socket
US3591793A (en) * 1968-12-23 1971-07-06 Jack D Mckim Panel light assembly
US3619598A (en) * 1969-02-27 1971-11-09 Mr Christmas Inc Decorative light ornaments
US3611269A (en) * 1970-03-19 1971-10-05 Amp Inc Electrical circuit assembly
US3668603A (en) * 1970-09-02 1972-06-06 Itt Twist lock socket with connector
US3805215A (en) * 1973-02-20 1974-04-16 G Davis Plug-in type christmas tree light
DE2841114A1 (en) * 1978-09-21 1980-03-27 Weiner Norbert Thermal fuse for electrical equipment
US4491380A (en) * 1981-03-03 1985-01-01 Wu Jeng Shyong Receiving means adapted for a push-in type lamp socket
US4795373A (en) * 1987-05-15 1989-01-03 Cooper Industries, Inc. Lamp with plastic base
US4999751A (en) * 1989-09-05 1991-03-12 Chen Ming Hsiung Innovative structure of christmas light assembly
US5139343A (en) * 1992-01-14 1992-08-18 Lin Wen Hsiung Lamp holder with switch means
US5443399A (en) * 1994-02-01 1995-08-22 Jing; Wang S. Electric light bulb socket positioner for lamp assemblies
US5464354A (en) * 1994-02-01 1995-11-07 Akman; Alp T. Parallel and series plugs and wiring segments for ballon display
US5921819A (en) * 1995-09-19 1999-07-13 Samsung Electronics Co., Ltd. Backlight including a replaceable light tube for a liquid crystal display
US5791940A (en) * 1996-10-18 1998-08-11 Chen; Chen-Yuan Bulb socket and socket holder assembly
US5722860A (en) * 1996-12-09 1998-03-03 Pan; Wun Fang Watertight socket structure for use in a light bulb series
US20080108251A1 (en) * 2006-10-25 2008-05-08 Qi Chen Light string
US7967619B2 (en) 2006-10-25 2011-06-28 Zheng Dianqing Light string with improved shunt system
US7591658B2 (en) 2006-10-25 2009-09-22 Ncp Corporation Light string with improved shunt system
US20090317996A1 (en) * 2006-10-25 2009-12-24 Zheng Dianging Light string with improved shunt system
US7253556B1 (en) 2006-12-08 2007-08-07 Tech Patent Licensing, Llc Light string socket with mechanical shunt
US7554266B1 (en) 2007-09-11 2009-06-30 Willis Electric Co., Ltd. Mechanical shunt for use in a socket in a string of lights
US7943211B2 (en) 2007-12-06 2011-05-17 Willis Electric Co., Ltd. Three dimensional displays having deformable constructions
US20100003891A1 (en) * 2007-12-06 2010-01-07 Willis Electric Co., Ltd. Three dimensional displays having deformable constructions
US20110195204A1 (en) * 2007-12-06 2011-08-11 Johnny Chen Three dimensional displays having deformable constructions
US7453194B1 (en) 2008-06-05 2008-11-18 Gibboney James W Mechanical shunt for use in the sockets of a string of lights
US7965025B2 (en) 2008-08-18 2011-06-21 Zheng Dianqing Light string with improved shunt system
US20100039019A1 (en) * 2008-08-18 2010-02-18 Zheng Dianqing Light string with improved shunt system
US20100289415A1 (en) * 2009-05-18 2010-11-18 Johnny Chen Energy efficient decorative lighting
US20110085327A1 (en) * 2009-10-14 2011-04-14 Johnny Chen Decorative light display with LEDs
US10070675B2 (en) 2010-09-23 2018-09-11 Willis Electric Co., Ltd. Modular lighted tree with internal electrical connection system
US9055777B2 (en) 2010-09-23 2015-06-16 Willis Electric Co., Ltd. Modular artificial lighted tree with decorative light string
US9887501B2 (en) 2010-09-23 2018-02-06 Willis Electric Co., Ltd. Modular artificial lighted tree with decorative light string
US9861147B1 (en) 2010-09-23 2018-01-09 Willis Electric Co., Ltd. Modular lighted tree
US9484687B1 (en) 2010-09-23 2016-11-01 Willis Electric Co., Ltd. Modular lighted tree
US9883706B2 (en) 2011-05-20 2018-02-06 Willis Electric Co., Ltd. Multi-positional, locking artificial tree trunk
US9222656B2 (en) 2011-11-14 2015-12-29 Willis Electric Co., Ltd. Conformal power adapter for lighted artificial tree
US9677749B2 (en) 2011-11-14 2017-06-13 Willis Electric Co., Ltd. Conformal power adapter for lighted artificial tree
US9664362B2 (en) 2011-11-14 2017-05-30 Willis Electric Co., Ltd. Lighted artificial tree with multi-terminal electrical connectors for power distribution and control
US9157587B2 (en) 2011-11-14 2015-10-13 Willis Electric Co., Ltd. Conformal power adapter for lighted artificial tree
US9441800B1 (en) 2011-12-09 2016-09-13 Willis Electric Co., Ltd. Modular lighted artificial tree
US9441823B1 (en) 2011-12-09 2016-09-13 Willis Electric Co., Ltd. Modular lighted artificial tree
US9526286B2 (en) 2012-05-08 2016-12-27 Willis Electric Co., Ltd. Modular tree with electrical connector
US10206530B2 (en) 2012-05-08 2019-02-19 Willis Electric Co., Ltd. Modular tree with locking trunk
US10010208B2 (en) 2012-05-08 2018-07-03 Willis Electric Co., Ltd. Modular tree with electrical connector
US9648919B2 (en) 2012-05-08 2017-05-16 Willis Electric Co., Ltd. Modular tree with rotation-lock electrical connectors
US9572446B2 (en) 2012-05-08 2017-02-21 Willis Electric Co., Ltd. Modular tree with locking trunk and locking electrical connectors
US9044056B2 (en) 2012-05-08 2015-06-02 Willis Electric Co., Ltd. Modular tree with electrical connector
US9439528B2 (en) 2013-03-13 2016-09-13 Willis Electric Co., Ltd. Modular tree with locking trunk and locking electrical connectors
US10098491B2 (en) 2013-03-13 2018-10-16 Willis Electric Co., Ltd. Modular tree with locking trunk and locking electrical connectors
US9671074B2 (en) 2013-03-13 2017-06-06 Willis Electric Co., Ltd. Modular tree with trunk connectors
US9894949B1 (en) 2013-11-27 2018-02-20 Willis Electric Co., Ltd. Lighted artificial tree with improved electrical connections
US9220361B1 (en) 2013-12-03 2015-12-29 Willis Electric Co., Ltd. Dual-voltage lighted artificial tree
US9677748B1 (en) 2013-12-03 2017-06-13 Willis Electric Co., Ltd. Dual-voltage lighted artificial tree
US9883566B1 (en) 2014-05-01 2018-01-30 Willis Electric Co., Ltd. Control of modular lighted artificial trees

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