US3902781A - Assembly unit for the construction of composite lamp holders - Google Patents

Assembly unit for the construction of composite lamp holders Download PDF

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Publication number
US3902781A
US3902781A US354085A US35408573A US3902781A US 3902781 A US3902781 A US 3902781A US 354085 A US354085 A US 354085A US 35408573 A US35408573 A US 35408573A US 3902781 A US3902781 A US 3902781A
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US
United States
Prior art keywords
plug
socket
assembly unit
type
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US354085A
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English (en)
Inventor
Hans Nagel Kommern
Werner Stoff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nagel KG
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Nagel KG
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Filing date
Publication date
Priority claimed from DE19737304563 external-priority patent/DE7304563U/de
Application filed by Nagel KG filed Critical Nagel KG
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
    • F21V21/12—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards capable of being elongated or shortened by the insertion or removal of intermediate pieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00

Definitions

  • the present invention relates to an assembly unit for [52] US. 339/158; 339/92 R the construction of composite a holders each unit [51] Int.
  • HOlR 13/50; HOlR' 13/54 comprising push in type connecting plugs and at least [58] held of 240/10 R; 339/25 154462 two matching sockets, so that several units can be fit- 339/ 167-171 75 92 R ted together in selected desired association by plugging some or all the plugs of each of a number of units [56] References C'ted into one or more of the sockets of other units com- UNITED STATES PATENTS prised in said number to construct lamp holder combinations of divers kinds.
  • PATENTEUSEP 2 I 3.902.781
  • PATENTEDSEP 2191s SHEET 5 [IF 8 PATENTED SEP 1975 SHEET 6 [IF 8 FIGJOQ PATENTED EP 2191s sum 7 o a FIG.”
  • the present invention relates to an assembly unit for the construction of composite lamp holders, each unit comprising push-in type connecting plugs and at least two matching sockets, so that several units can be fitted together in desired association by plugging some or all the plugs of each of a number of units into one or more of the sockets of other units comprised in said number to construct lamp holder combinations of divers kinds.
  • Assembly units containing at least three plug-andsocket type connectors for building up candelabra are already known. However, these are merely composite candlesticks for wax of stearine candles or tapers.
  • the object of the present invention if the provision of assembly units for the assembly of lamp holders or electroliers which use electric lamps as light sources and which do not, as in Christmas tree fairy lamp decorations and so forth, require the provision of external electrical wiring for electrically connecting together the assembly units in any desired combination for the construction of a diversity of kinds of lamp holder.
  • this object is achieved by providing the sockets and plugs of each unit with electrical contact-making elements which are screened and insulated by insulating members and, in a first embodiment of the invention, by adapting these electrical contact-making elements so that assembly units can be plugged together or electrical imitation candles or like decorative fittings can be plugged into the units.
  • the electrical contact-making elements are of the two-pole socket type, a contact-making pin being located in the common axis of the socket and plug of each connector element, said pin being electrically connected to a contact-making sleeve which is coaxial therewith at the other end of the connector element and the pin and the sleeve being concentrically surrounded by similarly interfitting contact-making sleeves facing opposite directions at opposite ends of the connector element, whereas insulating skirts which project beyond the ends of the contact-making elements are fixed at one end of the connector element and spring biassed so to project at the other end.
  • the diameters of the annular end faces of the spring biassed insulating skirts are so chosen that they abut the annular end faces of the fixed insulating skirts when such a plug socket of two units are fitted together.
  • the invention thus provides a coaxial plug-andsocket connection in which the poles cannot be accidentally wrongly connected and the contact elements themselves are enclosed all-around by insulating elements. By fitting together a plurality of plugs and sockets complete electrical connections through the connectors will be established at the same time.
  • the assembly units may be built to comprise say three sets of electrical contact-making elements disposed at equidistant intervals of around a central screw or bayonet type lamp socket and the entire arrangement including the wiring may be so enclosed in insulating material that a self-contained electrical component results which incorporates all the currentcarrying elements.
  • This electrical component may then be embedded in a divided two-part zinc pressure casting to form the body of the assembly unit, the two parts being joined by the application of pressure.
  • each assembly unit is located back-to-back, pointing upwards and downwards, and laterally offset from a central plug and that each plug is provided with a releasable fastening means for coupling the same to one of the sockets or to the plug of another like assembly unit.
  • any desired lamp holder construction can be assembled, i.e., begining from a table top, from a vertical wall or from a ceiling and proceeding upwards and sideways, or conversely downwards and sideways, or as may be desired.
  • the assembly unit may be trumpet-bell shaped, the sockets being arranged to pass through the body of the trumpet-bell in back-to-back paired disposition with their axes parallel to, and symmetrically offset from, the vertical centre axis of the unit in which the plug forms a central tubular stem.
  • the fastening means may comprise an anchoring pin which is releasably insertable into the plug, projects from the bottom end of the plug, and carries a fixing member, such as a nut, a head or the like forming a nut, adapted to bear against an abutting face on a socket.
  • Lamp holders can thus be constructed by building in the upward or downward directions in two or three dimensional configurations sideways as well as backwards and forwards.
  • FIG. 1 is a side elevation of an assembly unit according to the invention comprising two plug and socket elements fitted with electrical imitation candles,
  • FIG. 2 is a side elevation of a different assembly unit, comprising three plug and socket elements and a central lamp socket.
  • FIG. 3 is a top plan view of the unit according to FIG.
  • FIG. 4 is a section of part of an assembly unit, taken on the line IV IV in FIG. 3.
  • FIG. 5 and 6 are two different side elevations of an an assembly unit
  • FIG. 7 is an imitation candle which can be fitted into an assembly unit according to the invention
  • FIG. 8 illustrates the construction of an electrolier or lamp holder assembly form a number of modified assembly units
  • FIG. 9 is a top view of the electrolier according to FIG. 8,
  • FIG. 10, 10a 10b are an exploded view in a section taken on the line X -X in FIG. 11 of an assembly unit as used in the preceding construction
  • FIG. 11 is a horizontal section seen from above, taken on the line XI X1 in FIG. 10,
  • FIG. 12 is a fragmentary exploded view in a section taken on the line XII XII of the unit in FIG. 11,
  • FIG. 13 is a diagrammatic representation of the electrical contact-making elements in such a unit indicated in the form ofa side elevational chain line contour
  • FIG. 14 is an elevational section of an extension piece for assembly units according to the invention.
  • An assembly unit 1 preferably in the form of a zinc pressure casting, comprises, as illustrated in FIGS. 1, 2 and 3, connectors 2 for interfitting the units, such as plugs 4 and sockets 3 which are firmly interconnected by webs 5.
  • the assembly unit shown in FIG. 1 comprises only two connectors 2, each consisting of a socket 3 and coaxial therewith, a plug 4 whereas the assembly unit shown in FIGS. 2 and 3 comprises three connectors 2 so that a number of such units can be assembled to create combinations and constructions of lighting fittings and lamp holders of divers kinds.
  • assembly units according to the invention might also comprise more than three connectors in suitable configurations, particularly in conjunction with additional decorative elements such as fancy flower pots, trays and similar items.
  • assembly units comprising three connectors have proved to be most versatile since they will individually serve as lamp holders and can also be assembled into many aesthetically pleasing combinations.
  • the sockets 3 and the coaxial plugs 4 in each assembly unit 1 contain electric contact-making elements 6, 7 which are illustrated in greater detail in FIG. 4. These electric contact-making elements 6 and 7 preferably form twopole pin and socket contacts so arranged that their protectively screened contact elements can be used either for connecting two assembly units 1 together or for plugging in electrical imitation candles 8 and the like.
  • the sleeve-shaped socket 3 and the plug 4 of each connector 2 comprise a contact pin 9 at one end of the connector which is associated at the other end with a coaxially disposed contact sleeve 9a.
  • the contact pin 9 and the contact sleeve 9a are both concentrically surrounded by two similarly interfitting, likewise interconnected outer contact sleeves 10, 10a at opposite ends of the connector 2.
  • the contact pin 9 and the contact sleeves 9a, 10 and 10a are attached to an insulating body 11 which has upwardly and downwardly extending insulating skirts 11a, llb, 11c and 11d which insulate the contact-making elements from each other and prevent accidental outside contact with them.
  • the contact pin 9 and the contact sleeve 10 surrounding the same are also embraced by two concentric insulating skirts 12a, 12b which are displaceable against the resistance of coil springs 13a, 13b from a lower position they are shown in FIG. 4 to occupy on the right of the contact pin 9 into an upper position shown on the left hand side of the pin.
  • the annular end faces 12a and 12b of the two movable insulating skirts 12a and 12b match the annular end faces 11c, l ld of the two fixed insulating skirts 11c and 11d at the other end of the connector.
  • the movable insulating skirts 12a, 12b yield upwards against the resistance of their coil springs 13a, 13b, thus permitting the contact pin 9 and the contact sleeve 9a on the one hand and the contact sleeves l0 and 10 a of the two-pole contact-making devices on the other hand to establish an electrical connection.
  • the outer of the two movable insulating skirts 12a and 12b may preferably be divided into complementary segments by the provision of two or more longitudinal slits. Furthermore, the two upper fixed insulating skirts 11c and 11d and the two lower movable insulating skirts 12a and 12b axially project beyond the ends of the contact pin 9 and of the contact sleeves 9a, 10, 10a at each end of the connector 2. Moreover, an insulating button 14 is attached to the tip of contact pin 9 to prevent the insulating skirts 12a and 12b from being moved unless interfitting assembly units 1 are actually being plugged together. All the contact-making ele-.
  • each base element may also be fitted with a fuse.
  • the two contact-making sleeves 10, a are tubular members with an enlarged bottom end so contrived that the enlarged end is a push fit on the other end of a similar sleeve for the creation of electrical contact between two units 1 that are plugged together as already described.
  • One side of the sleeve has a lug 10b which is bent outwards and which can be, wired to similar contact sleeves in the same assembly unit 1.
  • the tubular sleeve is also provided with lateral recesses 10c for the accommodation of the insulating member 11.
  • FIG. 7 shows an electrical imitation candle 8 com-. prising a shaft 80 containing a contact pin 8b and a contact sleeve 80 surrounding the pin at its bottom end and having a diameter which fits into the contactmaking element 7 of an assembly unit 1 and thus establishes an electrical connection to an incandescent lamp 3d at the upper end of the shaft portion 8a.
  • FIGS. 8 and 9 of the drawing illustrate that assembly units 1 of modified construction to the first herein described unit can also be fitted together in many different ways for achieving composite lighting effects.
  • the lighting assembly in FIGS. 8 and 9 is composed of six identical units 1 in which the plug ends of the two bottom units have been fitted together in mirror symmetry so that the bottom unit 1 which stands upside down serves as a base for supporting the upright unit 1 which is attached thereto.
  • the two units are firmly connected together by a fastening device which will be later described.
  • two further units 1 have been added in a manner forming a series of steps.
  • On the far right another unit 1 is fitted from underneath to the preceding uppermost unit 1 after the insertion of a tubular extension piece 24, so that this last unit again hangs upside down.
  • An incandescent lamp 25 is screwed into the centre of each of the five upper assembly units 1.
  • each unit is roughly that a trumpet-bell 26 which springs from a central plug 4 and contains in symmetrical parallel disposition on each side of its centre axis (FIG. 10) a pair of identical sockets 3 fitted back-to-back in the trumpevbell.
  • the plug 4 has the form of a hollow sten located in the centre axis 27 of the body of the trumpet-bell 26.
  • each unit 1 comprises a web-like supporting frame 28 which is preferably of metal construction produced by pressure casting or diecasting, and which comprises at least two pairs of sockets 3 integrally cast with the spider-like supporting arms 29 and a ring 30 connecting the arms.
  • the supporting structure 28 is provided with a thin outer fairing 31 preferably also of metal, sheet aluminium or the like, or also of plastics, comprising a bottom portion 31a enveloping the plug 4 and covering the underside of the supporting structure 28 and an upper portion 31b forming the top of the calyx 26,' the two portions abutting in a notional horizontal centre plane 32 between the pairs of back-to-back sockets 3 and the calyx (FIG.8 and FIG.l0).
  • a thin outer fairing 31 preferably also of metal, sheet aluminium or the like, or also of plastics, comprising a bottom portion 31a enveloping the plug 4 and covering the underside of the supporting structure 28 and an upper portion 31b forming the top of the calyx 26,' the two portions abutting in a notional horizontal centre plane 32 between the pairs of back-to-back sockets 3 and the calyx (FIG.8 and FIG.l0).
  • the plug portion 4 contains a cylindrical insulating member 33 carrying two contact pins 34 which can be plugged into corresponding sheaths 35 indicated in dotted lines above and below an insulating member 36 inserted into each socket 3.
  • each insulating member 36 contains at least four such sheaths 35 (FIGS. 11 and 12) for the reception of the two contact pins 34 in such manner that each unit 1 can be plugged into another unit 1 'in at least two angularly different positions which in the illustrated example differ by about the centre axis 37.
  • the contact pins 34 are protected inside the tubular end of the plug 4.
  • each socket 3 contains an annular slit 3a embracing the contact sleeves 35 for the reception to a defined depth of the tubular bottom end of the plug 4.
  • each socket 3 contains at least one locating boss 3!; projecting upwards and one downwards and the tubular end of the plug 4 is formed with at least two corresponding locating recesses 4a in quadrature.
  • the fastening means comprises a threaded pin 38 which is detachably inserted from above into a centre bore 37 in the insulating member 33 inside the plug 4.
  • This pin 38 projects from the unit 1 beyond the bottom end of the plug 4 and its free end carries a locking member 39 which can be tightened against an abutting surface such as the end face of a socket 3.
  • the locking member may simply be a nut which is externally shaped to comply with the general contour of the assembly unit.
  • each assembly unit In the middle of the calyx 26 of each assembly unit 1, as will also be understood from FIG. 13, there is a plug-in type socket 41 for an incandescent lamp 25, this socket being electrically connected to the contact pins 34 below and to the sockets 35 on each side by suitable wires 40.
  • the extension member 24 for extending the plug 4 of any unit 1 has the same external and internal diameters as the plug 4, so that two insulating members as provided in the plug, can be fitted together in its interior.
  • the length of the extension member 24 is equal to the perpendicular distance A (FIG.10) between the bottom free end of the plug 4 and the horizontal median plane 32 dividing the pairs of back-to-back sockets in the calyx portion 26 of each unit 1.
  • the extension piece is further provided at its upper end with two locating projections 33b and at its bottom end with two corresponding locating recesses 33a so that, as shown in FIG. 8, such an extension piece is insertable from above or from below into a socket 3 in an assembly unit 1 instead of the plug 4 of another unit 1.
  • extension piece 24 has a central bore 37 through the insulating members 33 and a threaded fastening pin 38 of suitable length can be inserted into this bore from an assembly unit 1 until the projecting end of the pin is engageable by a locking nut 39.
  • the extension piece 24 with the next unit 1 can thus be affixed to the pair of sockets 3 of a preceding unit 1, in the manner shown in FIGS.
  • An assembly unit for the construction of composite lamp holders said unit having a generally trumpetshaped body having an axis, each unit comprising at least one central plug-type electrical contact element forming a tubular stem in the axis of said body; at least two pairs of opposite socket-type elements, the sockettype elements of each pair being arranged back to back passing through said trumpet-shaped body, and said at least two pairs are disposed parallel with and symmetrically laterally offset from the axis of said body, at least one of said socket-type elements of each pair being adapted to receive a plug-type element of another like unit; and releasable fastening means for coupling said plug-type element to one of the socket-type elements of another like unit, said fastening means comprising an anchoring pin which is releasably inserted into the plug-type contact element, projecting from the bottom end of the latter, and carrying a fixing member adapted to bear against an abutting face on a socket-type element.
  • each assembly unit contains at least two contact pins parallel to the anchoring pin, and wherein each socket-type contact element contains at least four tubular sheaths for the reception of said contact pins in such a manner that each assembly unit is connectable to another like assembly unit in a selected one of at least two relatively perpendicular positions.
  • each socket-type contact element is provided with at least two locating bosses facing in opposite directions for cooperation with at least two corresponding recesses provided at angular intervals in the tubular end of the plug-type contact element.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
US354085A 1972-04-27 1973-04-24 Assembly unit for the construction of composite lamp holders Expired - Lifetime US3902781A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE7216153 1972-04-27
DE19737304563 DE7304563U (de) 1973-02-07 1973-02-07 Bausatzelement zum Aufbau von elektrischen Beleuchtungskörpern

Publications (1)

Publication Number Publication Date
US3902781A true US3902781A (en) 1975-09-02

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Application Number Title Priority Date Filing Date
US354085A Expired - Lifetime US3902781A (en) 1972-04-27 1973-04-24 Assembly unit for the construction of composite lamp holders

Country Status (7)

Country Link
US (1) US3902781A (enrdf_load_stackoverflow)
JP (1) JPS4955181A (enrdf_load_stackoverflow)
AT (1) AT330894B (enrdf_load_stackoverflow)
BE (1) BE798787A (enrdf_load_stackoverflow)
FR (1) FR2182192B3 (enrdf_load_stackoverflow)
GB (1) GB1410092A (enrdf_load_stackoverflow)
IT (1) IT980275B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9839315B2 (en) 2015-03-27 2017-12-12 Polygroup Macau Limited (Bvi) Multi-wire quick assemble tree
US9843147B2 (en) 2011-10-28 2017-12-12 Polygroup Macau Limited (Bvi) Powered tree construction
US10440795B2 (en) 2016-03-04 2019-10-08 Polygroup Macau Limited (Bvi) Variable multi-color LED light string and controller for an artificial tree
US10765245B2 (en) 2009-07-14 2020-09-08 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US10973355B2 (en) 2009-07-14 2021-04-13 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US10993572B2 (en) 2009-07-14 2021-05-04 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US776326A (en) * 1903-02-26 1904-11-29 Hubbell Inc Harvey Multiple attachment-plug.
US881284A (en) * 1907-04-23 1908-03-10 William R Atkinson Wall-bracket for electric lights.
US1257973A (en) * 1915-05-24 1918-03-05 August Bouchery Lighting-fixture.
US1583313A (en) * 1921-09-30 1926-05-04 E W Hammond Attachment plug
US1635889A (en) * 1925-05-19 1927-07-12 Reynolds Spring Co Combined lamp socket and current tap
US2218545A (en) * 1933-12-27 1940-10-22 Pierce John B Foundation Electricity conductor unit
US3721814A (en) * 1971-08-09 1973-03-20 G Ries Light unit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US776326A (en) * 1903-02-26 1904-11-29 Hubbell Inc Harvey Multiple attachment-plug.
US881284A (en) * 1907-04-23 1908-03-10 William R Atkinson Wall-bracket for electric lights.
US1257973A (en) * 1915-05-24 1918-03-05 August Bouchery Lighting-fixture.
US1583313A (en) * 1921-09-30 1926-05-04 E W Hammond Attachment plug
US1635889A (en) * 1925-05-19 1927-07-12 Reynolds Spring Co Combined lamp socket and current tap
US2218545A (en) * 1933-12-27 1940-10-22 Pierce John B Foundation Electricity conductor unit
US3721814A (en) * 1971-08-09 1973-03-20 G Ries Light unit

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11013356B2 (en) 2009-07-14 2021-05-25 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US11712126B2 (en) 2009-07-14 2023-08-01 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US12226037B2 (en) 2009-07-14 2025-02-18 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US10973355B2 (en) 2009-07-14 2021-04-13 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US11096512B2 (en) 2009-07-14 2021-08-24 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US11096511B2 (en) 2009-07-14 2021-08-24 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US11083319B2 (en) 2009-07-14 2021-08-10 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US10765245B2 (en) 2009-07-14 2020-09-08 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US10765244B2 (en) 2009-07-14 2020-09-08 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US10993571B2 (en) 2009-07-14 2021-05-04 Belgravia Wood Limited Architecture for routing multi-channel commands via a tree column
US10993572B2 (en) 2009-07-14 2021-05-04 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US10893768B2 (en) 2009-07-14 2021-01-19 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US10939777B2 (en) 2009-07-14 2021-03-09 Belgravia Wood Limited Power pole for artificial tree apparatus with axial electrical connectors
US11967790B2 (en) 2011-10-28 2024-04-23 Polygroup Macau Limited (Bvi) Powered tree construction with rotation limiting
US10777949B2 (en) 2011-10-28 2020-09-15 Polygroup Macau Limited (Bvi) Powered tree construction
US10522954B1 (en) 2011-10-28 2019-12-31 Polygroup Macau Limited (Bvi) Powered tree construction
US10985513B2 (en) 2011-10-28 2021-04-20 Polygroup Macau Limited (Bvi) Powered tree construction with rotation limiting
US9843147B2 (en) 2011-10-28 2017-12-12 Polygroup Macau Limited (Bvi) Powered tree construction
US10404019B2 (en) 2011-10-28 2019-09-03 Polygroup Macau Limited (Bvi) Powered tree construction
US11799251B2 (en) 2011-10-28 2023-10-24 Polygroup Macau Limited (Bvi) Powered tree construction with rotation limiting
US9912109B2 (en) 2011-10-28 2018-03-06 Polygroup Macau Limited (Bvi) Powered tree construction
US9839315B2 (en) 2015-03-27 2017-12-12 Polygroup Macau Limited (Bvi) Multi-wire quick assemble tree
US10842306B2 (en) 2015-03-27 2020-11-24 Polygroup Macau Limited (Bvi) Multi-wire quick assemble tree
US11019692B2 (en) 2016-03-04 2021-05-25 Polygroup Macau Limited (Bvi) Variable multi-color LED light string and controller for an artificial tree
US10440795B2 (en) 2016-03-04 2019-10-08 Polygroup Macau Limited (Bvi) Variable multi-color LED light string and controller for an artificial tree
US10728978B2 (en) 2016-03-04 2020-07-28 Polygroup Macau Limited (Bvi) Variable multi-color LED light string and controller for an artificial tree

Also Published As

Publication number Publication date
JPS4955181A (enrdf_load_stackoverflow) 1974-05-29
AT330894B (de) 1976-07-26
FR2182192B3 (enrdf_load_stackoverflow) 1976-04-16
GB1410092A (en) 1975-10-15
BE798787A (fr) 1973-08-16
IT980275B (it) 1974-09-30
FR2182192A1 (enrdf_load_stackoverflow) 1973-12-07
ATA276773A (de) 1975-10-15

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