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Electrical solderless connector

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Publication number
US2716226A
US2716226A US23306451A US2716226A US 2716226 A US2716226 A US 2716226A US 23306451 A US23306451 A US 23306451A US 2716226 A US2716226 A US 2716226A
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Prior art keywords
connector
conductor
end
connection
screw
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Jonas Walter Monroe
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Reiner Electronics Co Inc
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R11/00Connectors providing two or more spaced connecting locations for conductive members which are thereby interconnected; End pieces for wires or cables, supported by the wire or cable and for facilitating electrical connection to some other wire, terminal, or conductive member
    • H01R11/11End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/18End pieces terminating in a probe
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact and means for effecting or maintaining such contact
    • H01R4/28Clamped connections, spring connections
    • H01R4/30Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/308Conductive members located parallel to axis of screw
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact and means for effecting or maintaining such contact
    • H01R4/56Electrically-conductive connections between two or more conductive members in direct contact and means for effecting or maintaining such contact one conductor screwing into another

Description

United States Patent O ELECTRICAL SOLDERLESS CONNECTOR Walter Monroe Jonas, North Bergen, N. J., assigner to Reiner Electronics Co., Inc., a corporation of New York Application June 22, 1951, Serial No. 233,664

1 Claim. (Cl. 339-268) My invention relates to connectors and more specifically to electrical connectors having a readily removable securing means for attaching a conductor therein.

The usual practice in electrically connecting an insulated conductor to a tubular sleeve is to solder the bared end of the conductor to the connector. While such a connection may have good electrical characteristics, the soldering is generally disadvantageous. Quick connection and disconnection without special tools is of great importance especially when required in a military operation in the field, when the use of a soldering iron, a source of heat, and a supply of solder is not available to the repairman.

Accordingly, a principal object of my invention is to provide an electrical connector to which a conductor can be easily assembled to make a satisfactory connection with ordinary tools, such as a screw driver or wrench.

A soldered connection does not provide a strong mechanical connection nor one with high pull-out values. Moreover, a soldered connection can only be tested by a longitudinal pull which may weaken the connection and cause a latent defect.

Connectors having various forms of positive securing means have been heretofore designed, but all have disadvantages which make them unacceptable.

For example, there is the type of connector in which a small length of the bared end of a conductor is engaged by the end of a securing screw. ln this type the electrical as well as mechanical characteristics are inferior for only a small area of contact is possible causing the conductor to be weakened and easily parted.

Another important purpose of my invention therefore, is to provide a maximum area of pressure contact of the conductor with the connector to increase the mechanical pull-out value and simultaneously increase the area of contact for the electrical connection.

While a sinple wedge type connector provides a large area of electrical contact it is not desirable as the connection is not readily reusable. Separation requires substantial destruction of the wedge type connector, especially where the connectors are small in size. Furthermore the wedges work loose in the connector when vibrated, and tension on the wire causes the connector parts to separate. Connectors of this type, as well as connectors that use transverse clamping members are excessive in width vfor use as leads for meters, test devices, and in confined installations.

Therefore another object of my invention is to provide a securing means that is longitudinally aligned with its housing to reduce the overall thickness of the connector.

Other objects of my invention are to provide a connector having maximum pull-out values; to provide an area of electrical and mechanical contact that is longer than the length of the securing means; to provide a connector with an undersized screw securing means that will not cut the strands of the conductor; and to provide a connector having a minimum of parts that can be manu- 2,716,226 Patented Aug. 23, 1955 factured inexpensively and by mass production methods, I accomplish these and other objects and obtain my new results as will be apparent from the device described in the following specification, particularly pointed out in the claims, and illustrated in the accompanying drawing, in which:

Fig. l is a longitudinal view of my assembled connector used in a test prong attached to an insulated conductor;

Fig. 2 is a longitudinal view of the connection with the handle partially in section, unthreaded from the connector and pushed back over the conductor;

Fig. 3 is an enlarged partial longitudinal sectional View of the connector with some of the parts exploded to show their relationship;

Fig. 4 is a similar view with the parts joined to form the connection;

Fig. 5 is a transverse sectional view taken along line 5-5 in Fig. 4;

Fig. 6 is a modified construction in which the connector is used in a splice type connection; and

Fig. 7 is a transverse sectional View of Fig, 6, after the connection has been made.

In the drawing reference character 10 designates generally a test prong, which illustrates one use for my connector, shown attached to an insulated conductor 12 over which is slidably positioned a tubular handle 14 internally threaded at 16 to engage the test prong 10.

The test prong is constructed of any suitable conducting material, preferably brass, and has at one end a pointed portion 18 and at the opposite end a socket or recessed portion 20. The prong is externally threaded at 22 to receive the threaded end 16 of the handle, and intermediate the two ends a peripheral shoulder 24 is formed to provide a stop for the handle when attached, as shown in Fig. 1.

As shown in Figs. 3 and 4, the bore of the recessed portion may be threaded as at 26 to receive a screw 28 of smaller diameter than the threaded bore, but with the same number of threads per inch as the bore to enable the screw to be threaded in the bore with the bared end 30 of the conductor 12 positioned in between.

To avoid any error in judgment it is advisable to insert the conductor end into the bore until it engages the end wall 31. The screw 2S is then inserted into the space 32 between the conductor and the bore, into the same end of the tubular portion as the bared end 30 of the conductor is inserted, and the screw turned until the corresponding threads engage each other. The end 34 of the recessed portion 20 may be beveled to facilitate the entry of the screw and conversely, the end of the screw may be tapered to accomplish the same result. The greatest wear on the conductor is at the end 34 on which the conductor pivots when moved, and so it is desirable to have this end rounded as well as bevelled.

The threading operation may be continued by engaging the slot 36 in the head 38 with a screw driver or other suitable instrument. This screwing action causes the bared end of the conductor to be compressed in the zig-zag clearance 40 between the threads of the screw and those of the bore respectively, and to assume a corrugated shape conforming to the shape of the clearance. The increased area of contact between the conductor and the threads 26 of the bore through this corrugated shape insures excellent electrical conductivity and a high strength mechanical connection with maximum pull-out value.

If the proper clearance 4U is provided, the bared end 30 of the conductor is bent into a corrugated shape without any cutting action by the threads. The bared end 30 is in eect snubbed in position at each thread it engages in the bore. If the usual multiple strand conductor is used, the twisting action of the screw when being threaded inwardly causes the strands to be spread out fan-like, asA shown in Fig. 5, increasing the electrical and mechanical eciency of the connection.

As a matter of convenience for packaging and shipment, and to prevent loss of. the. connector parts, depending upon the size ofv the conductor toy be` accommodated, the. diameter of the undersized screwv may be madeV suiciently large to -be retained in the tubular portion when slightly canted. so that itl will not, generally fall out. As the screw is preferably longer than meboreV ofthe. tubular portion, theV screw can be completely inserted and tightened in place byl Contact with some of the threads.

A predetermined amount of exposedwire, designated as 41 in Fig. 4, is allowed to remain between the-end: of. the insulation and the head 381 ofthe screw 28. This construction permits theaxial alignment ofY the; connected insulated wire, the screw, and test. prongs as shownin- Fig; 2, within the. attached handle as a completed assembly, as shown in Fig. 1. The head 38 of the screw is less inv diameter than. the bore. of the handle 14 toffacilitate the entry of the finished connection into thehandle.

In Fig. 6 I` have illustrated the usev of my invention in an in-line splice type of connector in which the recessed.

portion maybe a sleeve: 4Z open at, each end to receive oppositely positioned bared ends 44.y and 46: of the respective insulated conductors 5t)l and 48 to4 be joined. The bore ofthe sleeve 42 is threadedto receive an undersized screw 52 in the manner'previously'describedinconnectionwith Figs. l to 5. When the screwS'Z isthreaded to the sleeve, the enclosed strands of; the bared ends of the wires. areV attened and intermingled as shown. in Fig. 7 to provide. an excellent' electrical and mechanical connection. Tov assist in making the connection the baredends'. 441.y and 46 of the conductorsmay be. extended entirely through the sleeve and laterally' around the openv ends of the. sleeve to besnubbed thereagainst; when the screw 52 isr applied. Thereafter, the. loose wire ends-v may be cut o and the connection taped or otherwise` provided with aninsulation cover.

Where the conductors to be spliced' extend' from the. same directiom. the recessed portion may heconstructed inthe ommof a socket, similar to the construction-illus.- trated in Figs. 3 and 4, and both baredends ofthef conductorsnserted in the mouth ofthe socket.

Byiprovidingan undersized screw for' longitudinal engagement within any internally threaded recessed. portion! as a; means tov securetherein a bared end ofA the conductor, I can obtain an electrical engagement with the,` recessed portion, substantially along the length of the bared end,

and'v simultaneously obtain a superior mechanical cong nection. The conductor isclamped between the threaded parts of; the connector giving an improved c onnectiom I am able to reduce the. width of the-connector which is,k

eliminating the need for a soldering iron andisolder, and.

4 increasing the universal use of my connector. The connection is readily reusable eliminating the need for spare parts. The connector can be inexpensively machined resulting in a reduced cost o manufacture.

My novel connector can be used in an in-line splice connector in which case the recessed portion is open at both ends, or it may be used to secure a plurality of conductorsi'n asocket type of connector.

IA have thus described my invention, out I desire it understood'A that it is not confined to the particularY forms or uses shown and described, the same being merely illustrative, and that the invention may be carried out in other ways without departingfrom the spirit of my invention, and, therefore, I claim broadly the right to employ all equivalent instrumentalities coming within the scope of the appended claim, and by means of which, objects of my invention are attained and new results accomplished, as it is obvious. that the particular embodiments herein shown and described are only some ofi the many that can be employedr to attain these objects and accomplish these results.

I claim:

An electrical connection easily connected and disconnected without damage to. the wire comprising a wire, a body member having a threaded recessed portion with uniform diameter larger than the diameter of the wire,

and' a threaded securing member positioned in said re-A cessed portion and having a uniform diameter smaller than the threaded recessed portion of the bodyv member, and engaging one side of said threaded recessed portion, said wire having a. cross-sectional area less than the` difference between the cross-sectional area.k of the threaded.

recessed portion and the cross-sectional area of the threaded securing member and being compressedbetween the body member and the threaded securing member and containing two sets ofV threads, one which engages and matches the threads of the recessed portion of the body.

References Cited in the tile of. this patent UNITED STATES PATENTS 1,298,879 Brown Apr. l, 1919l 1,596,673 McLaughlin Aug. 17, l-926 1,709,393 Fitch Apr. 16, 1929il,813,16-'/ Kaisling- July 7, 193-1 1,836,480 Loughridge Dec. l5, 1931" 1,982,212 Hagist. Nov. 27, 1934 2,175,871 Bourne Oct. 1-0, 1939- 2,456,601 Weisberg Dec, I4, 1948` FOREIGN PATENTS 807,750 France Oct. 26, 1936y

US2716226A 1951-06-22 1951-06-22 Electrical solderless connector Expired - Lifetime US2716226A (en)

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071751A (en) * 1959-03-14 1963-01-01 Hirschmann Radiotechnik Connector element for ignition systems
DE3013050A1 (en) * 1980-04-03 1981-10-08 Texpa Arbter Maschbau Gmbh An apparatus for aligning a warped bahnfoermigen ware, in particular a textile web
US20020144788A1 (en) * 2001-04-06 2002-10-10 Shortt Frederick John Automatic applicator for non-adhesive labels
WO2002038059A3 (en) * 2000-10-24 2003-02-20 Spineology Group Llc Tension band clip
US20040073270A1 (en) * 2000-07-13 2004-04-15 Firlik Andrew D. Methods and apparatus for effectuating a lasting change in a neural-function of a patient
US20060253168A1 (en) * 2004-11-12 2006-11-09 Northstar Neuroscience, Inc. Systems and methods for selecting stimulation sites and applying treatment, including treatment of symptoms of Parkinson's disease, other movement disorders, and/or drug side effects
US7299096B2 (en) 2001-03-08 2007-11-20 Northstar Neuroscience, Inc. System and method for treating Parkinson's Disease and other movement disorders
US7302298B2 (en) * 2002-11-27 2007-11-27 Northstar Neuroscience, Inc Methods and systems employing intracranial electrodes for neurostimulation and/or electroencephalography
US7305268B2 (en) 2000-07-13 2007-12-04 Northstar Neurscience, Inc. Systems and methods for automatically optimizing stimulus parameters and electrode configurations for neuro-stimulators
US7353064B2 (en) 2002-12-10 2008-04-01 Northstar Neuroscience, Inc. Systems and methods for enhancing or optimizing neural stimulation therapy for treating symptoms of movement disorders and/or other neurologic dysfunction
US7483747B2 (en) 2004-07-15 2009-01-27 Northstar Neuroscience, Inc. Systems and methods for enhancing or affecting neural stimulation efficiency and/or efficacy
US7565199B2 (en) 2002-12-09 2009-07-21 Advanced Neuromodulation Systems, Inc. Methods for treating and/or collecting information regarding neurological disorders, including language disorders
US7577481B2 (en) 2000-07-13 2009-08-18 Advanced Neuromodulation Systems, Inc. Methods and apparatus for effectuating a lasting change in a neural-function of a patient
US20100049251A1 (en) * 2008-03-28 2010-02-25 Kuslich Stephen D Method and device for interspinous process fusion
US7684866B2 (en) 2003-08-01 2010-03-23 Advanced Neuromodulation Systems, Inc. Apparatus and methods for applying neural stimulation to a patient
US7756584B2 (en) 2000-07-13 2010-07-13 Advanced Neuromodulation Systems, Inc. Methods and apparatus for effectuating a lasting change in a neural-function of a patient
US7831305B2 (en) 2001-10-15 2010-11-09 Advanced Neuromodulation Systems, Inc. Neural stimulation system and method responsive to collateral neural activity
US8126568B2 (en) 2002-03-28 2012-02-28 Advanced Neuromodulation Systems, Inc. Electrode geometries for efficient neural stimulation
US20120212951A1 (en) * 2011-02-21 2012-08-23 Lextar Electronics Corporation Lamp tube structure and assembly thereof
US8433414B2 (en) 2000-07-13 2013-04-30 Advanced Neuromodulation Systems, Inc. Systems and methods for reducing the likelihood of inducing collateral neural activity during neural stimulation threshold test procedures
US20130137288A1 (en) * 2010-12-01 2013-05-30 Ndi Medical, Llc Systems and methods of coupling electrical conductors
US8718777B2 (en) 2002-11-27 2014-05-06 Advanced Neuromodulation Systems, Inc. Methods and systems for intracranial neurostimulation and/or sensing
US8929991B2 (en) 2005-10-19 2015-01-06 Advanced Neuromodulation Systems, Inc. Methods for establishing parameters for neural stimulation, including via performance of working memory tasks, and associated kits
US9339647B2 (en) 2008-08-01 2016-05-17 Ndi Medical, Llc Systems and methods for providing percutaneous electrical stimulation

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1298879A (en) * 1917-12-13 1919-04-01 Philips Brinton Company Electric connection.
US1596673A (en) * 1924-11-24 1926-08-17 Barkelew Electric Mfg Company Detachable phone tip
US1709393A (en) * 1926-05-06 1929-04-16 Raytheon Mfg Co Radio vacuum-tube construction
US1813167A (en) * 1923-08-16 1931-07-07 Kellogg Switchroard And Supply Plug
US1836480A (en) * 1924-10-14 1931-12-15 Matthew H Loughridge Outlet for electrical conductors
US1982212A (en) * 1933-09-23 1934-11-27 Emil T Hagist Solderless terminal connecting device for electrical conductors
FR807750A (en) * 1935-07-03 1937-01-20 Usinage De Materiel Electr Soc Terminal for electrical connections
US2175871A (en) * 1936-06-30 1939-10-10 English Electric Co Ltd Electrode holder
US2456601A (en) * 1945-12-13 1948-12-14 Allied Electric Products Inc Solderless contact terminal

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1298879A (en) * 1917-12-13 1919-04-01 Philips Brinton Company Electric connection.
US1813167A (en) * 1923-08-16 1931-07-07 Kellogg Switchroard And Supply Plug
US1836480A (en) * 1924-10-14 1931-12-15 Matthew H Loughridge Outlet for electrical conductors
US1596673A (en) * 1924-11-24 1926-08-17 Barkelew Electric Mfg Company Detachable phone tip
US1709393A (en) * 1926-05-06 1929-04-16 Raytheon Mfg Co Radio vacuum-tube construction
US1982212A (en) * 1933-09-23 1934-11-27 Emil T Hagist Solderless terminal connecting device for electrical conductors
FR807750A (en) * 1935-07-03 1937-01-20 Usinage De Materiel Electr Soc Terminal for electrical connections
US2175871A (en) * 1936-06-30 1939-10-10 English Electric Co Ltd Electrode holder
US2456601A (en) * 1945-12-13 1948-12-14 Allied Electric Products Inc Solderless contact terminal

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071751A (en) * 1959-03-14 1963-01-01 Hirschmann Radiotechnik Connector element for ignition systems
DE3013050A1 (en) * 1980-04-03 1981-10-08 Texpa Arbter Maschbau Gmbh An apparatus for aligning a warped bahnfoermigen ware, in particular a textile web
US8065012B2 (en) 2000-07-13 2011-11-22 Advanced Neuromodulation Systems, Inc. Methods and apparatus for effectuating a lasting change in a neural-function of a patient
US8412335B2 (en) 2000-07-13 2013-04-02 Advanced Neuromodulation Systems, Inc. Systems and methods for automatically optimizing stimulus parameters and electrode configurations for neuro-stimulators
US20040073270A1 (en) * 2000-07-13 2004-04-15 Firlik Andrew D. Methods and apparatus for effectuating a lasting change in a neural-function of a patient
US7305268B2 (en) 2000-07-13 2007-12-04 Northstar Neurscience, Inc. Systems and methods for automatically optimizing stimulus parameters and electrode configurations for neuro-stimulators
US7756584B2 (en) 2000-07-13 2010-07-13 Advanced Neuromodulation Systems, Inc. Methods and apparatus for effectuating a lasting change in a neural-function of a patient
US8195300B2 (en) 2000-07-13 2012-06-05 Advanced Neuromodulation Systems, Inc. Systems and methods for automatically optimizing stimulus parameters and electrode configurations for neuro-stimulators
US8433414B2 (en) 2000-07-13 2013-04-30 Advanced Neuromodulation Systems, Inc. Systems and methods for reducing the likelihood of inducing collateral neural activity during neural stimulation threshold test procedures
US7236831B2 (en) 2000-07-13 2007-06-26 Northstar Neuroscience, Inc. Methods and apparatus for effectuating a lasting change in a neural-function of a patient
US7577481B2 (en) 2000-07-13 2009-08-18 Advanced Neuromodulation Systems, Inc. Methods and apparatus for effectuating a lasting change in a neural-function of a patient
US8073546B2 (en) 2000-07-13 2011-12-06 Advanced Neuromodulation Systems, Inc. Methods and apparatus for effectuating a lasting change in a neural-function of a patient
US6656185B2 (en) 2000-10-24 2003-12-02 Spineology Inc. Tension band clip
WO2002038059A3 (en) * 2000-10-24 2003-02-20 Spineology Group Llc Tension band clip
US7299096B2 (en) 2001-03-08 2007-11-20 Northstar Neuroscience, Inc. System and method for treating Parkinson's Disease and other movement disorders
US20020144788A1 (en) * 2001-04-06 2002-10-10 Shortt Frederick John Automatic applicator for non-adhesive labels
US7831305B2 (en) 2001-10-15 2010-11-09 Advanced Neuromodulation Systems, Inc. Neural stimulation system and method responsive to collateral neural activity
US8126568B2 (en) 2002-03-28 2012-02-28 Advanced Neuromodulation Systems, Inc. Electrode geometries for efficient neural stimulation
US7302298B2 (en) * 2002-11-27 2007-11-27 Northstar Neuroscience, Inc Methods and systems employing intracranial electrodes for neurostimulation and/or electroencephalography
US8718777B2 (en) 2002-11-27 2014-05-06 Advanced Neuromodulation Systems, Inc. Methods and systems for intracranial neurostimulation and/or sensing
US7565199B2 (en) 2002-12-09 2009-07-21 Advanced Neuromodulation Systems, Inc. Methods for treating and/or collecting information regarding neurological disorders, including language disorders
US7353064B2 (en) 2002-12-10 2008-04-01 Northstar Neuroscience, Inc. Systems and methods for enhancing or optimizing neural stimulation therapy for treating symptoms of movement disorders and/or other neurologic dysfunction
US7684866B2 (en) 2003-08-01 2010-03-23 Advanced Neuromodulation Systems, Inc. Apparatus and methods for applying neural stimulation to a patient
US7983762B2 (en) 2004-07-15 2011-07-19 Advanced Neuromodulation Systems, Inc. Systems and methods for enhancing or affecting neural stimulation efficiency and/or efficacy
US7483747B2 (en) 2004-07-15 2009-01-27 Northstar Neuroscience, Inc. Systems and methods for enhancing or affecting neural stimulation efficiency and/or efficacy
US8606361B2 (en) 2004-07-15 2013-12-10 Advanced Neuromodulation Systems, Inc. Systems and methods for enhancing or affecting neural stimulation efficiency and/or efficacy
US7908009B2 (en) 2004-11-12 2011-03-15 Advanced Neuromodulation Systems, Inc. Systems and methods for selecting stimulation sites and applying treatment, including treatment of symptoms of Parkinson's disease, other movement disorders, and/or drug side effects
US7742820B2 (en) 2004-11-12 2010-06-22 Advanced Neuromodulation Systems, Inc. Systems and methods for selecting stimulation sites and applying treatment, including treatment of symptoms of parkinson's disease, other movement disorders, and/or drug side effects
US20060253168A1 (en) * 2004-11-12 2006-11-09 Northstar Neuroscience, Inc. Systems and methods for selecting stimulation sites and applying treatment, including treatment of symptoms of Parkinson's disease, other movement disorders, and/or drug side effects
US7565200B2 (en) 2004-11-12 2009-07-21 Advanced Neuromodulation Systems, Inc. Systems and methods for selecting stimulation sites and applying treatment, including treatment of symptoms of Parkinson's disease, other movement disorders, and/or drug side effects
US20060253171A1 (en) * 2004-11-12 2006-11-09 Northstar Neuroscience, Inc. Systems and methods for selecting stimulation sites and applying treatment, including treatment of symptoms of parkinson's disease, other movement disorders, and/or drug side effects
US7437196B2 (en) 2004-11-12 2008-10-14 Northstar Neuroscience, Inc. Systems and methods for selecting stimulation sites and applying treatment, including treatment of symptoms of Parkinson's disease, other movement disorders, and/or drug side effects
US20060253169A1 (en) * 2004-11-12 2006-11-09 Northstar Neuroscience, Inc. Systems and methods for selecting stimulation sites and applying treatment, including treatment of symptoms of Parkinson's disease, other movement disorders, and/or drug side effects
US7917225B2 (en) 2004-11-12 2011-03-29 Advanced Neuromodulation Systems, Inc. Systems and methods for selecting stimulation sites and applying treatment, including treatment of symptoms of parkinson's disease, other movement disorders, and/or drug side effects
US8929991B2 (en) 2005-10-19 2015-01-06 Advanced Neuromodulation Systems, Inc. Methods for establishing parameters for neural stimulation, including via performance of working memory tasks, and associated kits
US20100049251A1 (en) * 2008-03-28 2010-02-25 Kuslich Stephen D Method and device for interspinous process fusion
US9339647B2 (en) 2008-08-01 2016-05-17 Ndi Medical, Llc Systems and methods for providing percutaneous electrical stimulation
US8616913B2 (en) * 2010-12-01 2013-12-31 Ndi Medical, Llc Systems and methods of coupling electrical conductors
US20130137288A1 (en) * 2010-12-01 2013-05-30 Ndi Medical, Llc Systems and methods of coupling electrical conductors
US8827486B2 (en) * 2011-02-21 2014-09-09 Lextar Electronics Corporation Lamp tube structure and assembly thereof
US20120212951A1 (en) * 2011-02-21 2012-08-23 Lextar Electronics Corporation Lamp tube structure and assembly thereof

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