EP1445837A1 - Power plug - Google Patents
Power plug Download PDFInfo
- Publication number
- EP1445837A1 EP1445837A1 EP03250695A EP03250695A EP1445837A1 EP 1445837 A1 EP1445837 A1 EP 1445837A1 EP 03250695 A EP03250695 A EP 03250695A EP 03250695 A EP03250695 A EP 03250695A EP 1445837 A1 EP1445837 A1 EP 1445837A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screws
- power plug
- ground
- terminal
- copper plate
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
- H01R4/44—Clamping areas on both sides of screw
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
- H01R13/512—Bases; Cases composed of different pieces assembled by screw or screws
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding with earth pin, blade or socket
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
- H01R24/22—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable with additional earth or shield contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
- H01R24/30—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable with additional earth or shield contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2103/00—Two poles
Definitions
- the second conductive member 131 is a copper plate, two ends of which copper plate 131 respectively extend to second screw holes 150 for allowing the two second screws 15 to penetrate therethrough. This makes the second screws 15 comes into contact with the copper plate 131 when being screwed into the second screw holes 150.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
- Taps Or Cocks (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
- The present invention relates to power plugs, and more particularly, to a power plug for preventing quality deterioration of power supplied through the power plug.
- Recently, in the realm of audio equipment, much attention and concern are directed toward influence of power supply on audio quality, or timbre deterioration caused by instability of current passing through the audio equipment.
- In response to the above problems, a power plug having stronger mechanical strength and stability is applied to the audio equipment, wherein joints or terminals of the power plug are preferably made for reducing electrical resistance of current flow; this desirably improves timbre, resolution and other critical properties of the audio equipment.
- However, in order to enhance mechanical strength and stability, the foregoing power plug is internally provided with a plurality of metallic screws. When current from a power supply flows inside the power plug, a magnetic field produced by the current flow induces variation in internal electron energy levels of metal atoms of the metallic screws that are located nearby the current flow, whereby part of electrons in the metal atoms are ionized, and generates an electron flow inside the metallic screws. This electron flow accordingly produces a magnetic field, which interferes with stability of the current flow from the power supply, thereby leading to timbre deterioration of the audio equipment in operation of the power plug, so that satisfactory audio quality still cannot be achieved.
- A primary objective of the present invention is to provide a power plug, in which a ground mechanism can prevent the occurrence of electron ionization in the power plug, allowing stability of current flowing through the power plug to be effectively assured.
- In accordance with the foregoing and other objectives, the present invention proposes a power plug, comprising: a terminal base having at least one conductive terminal and a ground terminal; an electric wire having core wires connected to the conductive terminal and the ground terminal, respectively; a cover integrally connected to the terminal base by a plurality of first screws; and a ground mechanism having a conductive member for connecting the first screws to the ground terminal, allowing the first screws to be grounded. The conductive member of the ground mechanism is a copper plate, wherein a central portion of the copper plate is connected to the ground terminal, and two ends thereof can respectively extend to come into contact with the first screws.
- Further, the conductive terminal and ground terminal of the terminal base can be in the form of a male or female power plug.
- In another embodiment, the power plug of the invention further comprises a wire fixing mechanism installed in the cover, which wire fixing mechanism includes a press board positioned at where the electric wire passes thereby, and a clamping member underneath the press board; and two second screws respectively penetrating through the cover and screwed at two ends of the press board. The ground mechanism includes a first conductive member for connecting the first screws to the ground terminal, allowing the first screws to be grounded; a second conductive member for interconnecting the two second screws; and a third conductive member for connecting the first screws to the second conductive member, so as to ground the second screws via the second conductive member and the first screws. A central portion of the first conductive member is connected to the ground terminal, and two ends thereof can respectively extend to come into contact with the first screws. The second conductive member is a copper plate, and capable of extending to come into contact with the second screws, respectively. And, the second conductive member has a central portion thereof being exposed to one screw hole for allowing one of the first screws to be screwed therein; the third conductive member is a metallic spring installed in this screw hole, and is pressed when the first screw is screwed into the screw hole, in a manner that one end of the metallic spring abuts against the first screw, and the other end of the metallic spring adjoins the central portion of the second conductive member.
- In a further embodiment, the power plug of the invention comprises: a terminal base having at least one conductive terminal and a ground terminal; an electric wire having core wires connected to the conductive terminal and the ground terminal, respectively; two covers integrally connected to the terminal base by a plurality of screws, and capable of being coupled to each other for enclosing the conductive terminal and the ground terminal therein; and a ground mechanism having a conductive member for connecting the screws to the ground terminal, allowing the screws to be grounded. The conductive member of the ground mechanism is a copper plate provided on an inner wall of one of the covers, wherein one end of the copper plate extends toward the ground terminal, and can be pressed to abut against the ground terminal when the two covers are coupled to each other, whereas the other end of the copper plate extends to screw holes, allowing the screws to be respectively screwed into the screw holes and come into contact with the copper plate.
- In a further embodiment, the power plug of the invention comprises: a terminal base having at least one conductive terminal; an electric wire having core wires connected to the conductive terminal and a ground terminal, respectively; a cover integrally connected to the terminal base by a plurality of screws; a ground wire having one end thereof being connected to the ground terminal, and the other end thereof extending to outside of the power plug and connected to an external ground device; and a ground mechanism for connecting the screws to the ground terminal of the ground wire, allowing the screws to be grounded.
- The present invention can be readily understood by the following detailed description of the preferred embodiment, with reference made to the accompanying drawings, wherein:
- FIG. 1 is a perspective schematic diagram of a power plug of a first preferred embodiment of the invention;
- FIG. 2 is a perspective dissection diagram showing a terminal base with a ground mechanism in a power plug of a first preferred embodiment of the invention;
- FIG. 3 is a cross-sectional view of a terminal base with a ground mechanism in a power plug of a first preferred embodiment of the invention;
- FIG. 4 is a cross-sectional view of an upper part of a cover in a power plug of a first preferred embodiment of the invention;
- FIG. 5 is a perspective dissection diagram showing another example of a terminal base with a ground mechanism in a power plug of a first preferred embodiment of the invention;
- FIG. 6 is a top view of a power plug of a second preferred embodiment of the invention;
- FIG. 7 is a side view of a power plug of a second preferred embodiment of the invention;
- FIG. 8 is a front view of a power plug of a second preferred embodiment of the invention;
- FIG. 9 is a back view of a power plug of a second preferred embodiment of the invention;
- FIG. 10 is a perspective structural diagram showing an unassembled power plug of a second preferred embodiment of the invention;
- FIG. 11 is a top view of a power plug of a third preferred embodiment of the invention; and
- FIG. 12 is a cross-sectional view of a power plug of a third preferred embodiment of the invention.
-
- Illustrated in FIG. 1 is a perspective schematic diagram of a power plug of a first embodiment of the present invention. As shown in the drawing, the power plug 1 comprises a
terminal base 10 having twoconductive terminals 100 and aground terminal 101; anelectric wire 11 having core wires connected to theconductive terminals 100 and theground terminal 101, respectively; acover 12 integrally connected to theterminal base 10 by a plurality offirst screws 102; and aground mechanism 13 for connecting thefirst screws 102 to theground terminal 101, allowing thefirst screws 102 to be grounded. - FIG. 2 illustrates a perspective dissection diagram of a terminal base with a ground mechanism in the power plug of the first embodiment of the invention; FIG. 3 illustrates a cross-sectional view of a terminal base with a ground mechanism in the power plug of the first embodiment of the invention. Referring to FIGs. 1, 2 and 3, the
ground mechanism 13 includes a firstconductive member 130 such as a copper plate for connecting thefirst screws 102 to theground terminal 101. One end of thecopper plate 130 is associated with theground terminal 101, and the other end thereof extends toscrew holes 1020 for allowing thefirst screws 102 to penetrate therethrough. This makes thefirst screws 102 come into contact with thecopper plate 130 when being screwed into thescrew holes 1020. - Furthermore, two of the
first screws 102 are provided in the power plug 1. The firstconductive member 130 is an approximately M-shaped copper plate, wherein a central portion of thecopper plate 130 is connected to theground terminal 101, and two ends thereof respectively extend to twoscrew holes 1020 where thefirst screws 102 can penetrate therethrough, so as to allow thefirst screws 102 to respectively screwed into thescrew holes 1020 and come into contact with thecopper plate 130. - Moreover, the
conductive terminals 100 and theground terminal 101 of theterminal base 10 are in the form of a female power plug. - FIG. 4 illustrates a cross-sectional view of an upper part of a cover in the power plug of the first embodiment of the invention. Referring to FIGs. 2, 3 and 4, the power plug 1 further comprises: a
wire fixing mechanism 14 installed in thecover 12, and twosecond screws 15. Thewire fixing mechanism 14 includes apress board 140 positioned at where theelectric wire 11 passes thereby, and aclamping member 141 underneath thepress board 140. The twosecond screws 15 penetrate through thecover 12 and are screwed at two ends of thepress board 140, respectively. By screwing tight thesecond screws 15, thepress board 140 can be moved toward an inner wall of thecover 12, allowing theelectric wire 11 to be fixed and abut against the inner wall of thecover 12, and to be firmly clamped by theclamping member 141. - Besides the above first
conductive member 130 for allowing thefirst screws 102 to be grounded, theground mechanism 13 further includes a secondconductive member 131 for interconnecting the twosecond screws 15; and a thirdconductive member 132 for connecting thefirst screws 102 to the secondconductive member 131, allowing thesecond screws 15 to be grounded via the secondconductive member 131 and thefirst screws 102. - The second
conductive member 131 is a copper plate, two ends of whichcopper plate 131 respectively extend tosecond screw holes 150 for allowing the twosecond screws 15 to penetrate therethrough. This makes thesecond screws 15 comes into contact with thecopper plate 131 when being screwed into thesecond screw holes 150. - A central portion of the second
conductive member 131 is exposed to one of thefirst screw holes 1020 used for screwing thefirst screws 102 therein. The thirdconductive member 132 is a metallic spring installed in thefirst screw hole 1020. When one of thefirst screws 102 is screwed into thefirst screw hole 1020, themetallic spring 132 is pressed, making one end thereof abut against thefirst screw 102, and the other end of themetallic spring 132 adjoin the central portion of the secondconductive member 131. - FIG. 5 is a perspective dissection diagram showing another example of a terminal base with a ground mechanism in the power plug of the first embodiment of the invention. As shown in the drawing, besides the above-mentioned female power plug, the
conductive terminals 100 and theground terminal 101 of theterminal base 10 can also be in the form of a male power plug. - FIGs. 6, 7, 8 and 9 are respectively a top view, a side view, a front view and a back view of a power plug of a second embodiment of the invention; FIG. 10 is a perspective structural diagram showing an unassembled power plug of the second embodiment of the invention. Referring to FIGs. 6 to 10, the
power plug 2 of this embodiment comprises: aterminal base 20 having twoconductive terminals 200 and aground terminal 201; anelectric wire 21 having core wires connected to theconductive terminals 200 and theground terminal 201, respectively; two covers 22 integrally connected to theterminal base 20, which twocovers 22 are capable of being coupled to each other by means ofscrews 24, so as to enclose theconductive terminals 200 and theground terminal 201 therein; and aground mechanism 23 for connecting thescrews 24 to theground terminal 201, so as to ground thescrews 24. - Furthermore, the
ground mechanism 23 includes aconductive member 230 for interconnecting thefirst screws 24 and theground terminal 201. Thisconductive member 230 is a copper plate attached to an inner wall of one of thecovers 22, wherein one end of thecopper plate 230 extends toward theground terminal 201, and is pressed to abut against theground terminal 201 when the twocovers 32 are engaged with each other, and the other end of thecopper plate 230 extends toscrew holes 240 for allowing thescrews 24 to penetrate therethrough, whereby thescrews 24 are made to come into contact with thecopper plate 230 when being screwed into thescrew holes 240. - In particular, two of the
screws 24 are adopted in this embodiment, and alternatively, theconductive member 230 can be an approximately T-shaped copper plate provided on the inner wall of one of thecovers 22. The vertical end of the T-shaped copper plate 230 extends toward theground terminal 201, and is pressed to abut against theground terminal 201 when the twocovers 32 are engaged with each other; the other two ends of thecopper plate 230 extend to thescrew holes 240, allowing the twoscrews 24 to come into contact with thecopper plate 230 when being respectively screwed into thescrew holes 240. - Illustrated in FIGs. 11 and 12 are respectively a top view and a cross-sectional view of a power plug of a third embodiment of the invention. Referring to FIGs. 11 and 12, the
power plug 3 comprises: aterminal base 30 having aconductive terminal 300; anelectric wire 31 having core wires connected to theconductive terminal 300 and aground terminal 330, respectively; acover 32 integrally connected to theterminal base 30 by means ofscrews 320; aground wire 33 having one end thereof connected to theground terminal 330 inside theterminal base 30 and thecover 32; and aground mechanism 34 for connecting thescrews 320 to theground terminal 330 of theground wire 33, so as to ground thescrews 320. - The power plug of the invention is characterized in the provision of a ground mechanism, which can solve a problem of electron ionization occurring in a conventional power plug as previously described, and further allow timbre quality of audio equipment to be effectively improved, whereby sounds generated from the audio equipment are clarified, especially for low bands to be more stable and sound. Moreover, in the use of the power plug of the invention, metal-induced interference with power or current passing through inside of the power plug and electric wires can be eliminated, allowing high quality of the clear original sounds to reappear.
- In conclusion, the invention evidently provides positive and affirmative improvements in elevating and raising sound quality generated by the audio equipment.
- The invention has been described using exemplary preferred embodiments. However, it is to be understood that the scope of the invention is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements. The scope of the claims, therefore, should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
Claims (14)
- A power plug, comprising:a terminal base having at least one conductive terminal and a ground terminal;an electric wire having core wires connected to the conductive terminal and the ground terminal, respectively;a cover integrally connected to the terminal base by a plurality of first screws; anda ground mechanism for connecting the first screws to the ground terminal, allowing the first screws to be grounded.
- The power plug of claim 1, wherein the ground mechanism includes a conductive member for connecting the first screws to the ground mechanism.
- The power plug of claim 2, wherein the conductive member is a copper plate, which copper plate has one end thereof being connected to the ground terminal, and the other end thereof extending to screw holes, allowing the first screws to be respectively screwed into the screw holes and come into contact with the copper plate.
- The power plug of claim 2, wherein two of the first screws are provided in the power plug, and the conductive member is a M-shaped copper plate, which copper plate has a central portion thereof being connected to the ground terminal, and two ends thereof respectively extending to two screw holes, allowing the two first screws to be respectively screwed into the screw holes and come into contact with the copper plate.
- The power plug of claim 1, further comprising:a wire fixing mechanism installed in the cover, which wire fixing mechanism includes a press board positioned at where the electric wire passes thereby, and a clamping member underneath the press board; andtwo second screws respectively penetrating through the cover and screwed at two ends of the press board;
- The power plug of claim 5, wherein the ground mechanism includes a first conductive member for connecting the first screws to the ground terminal, allowing the first screws to be grounded; a second conductive member for interconnecting the two second screws; and a third conductive member for connecting the first screws to the second conductive member, so as to ground the second screws via the second conductive member and the first screws.
- The power plug of claim 6, wherein two of the first screws are provided in the power plug, and the first conductive member is a M-shaped copper plate, which copper plate has a central portion thereof being connected to the ground terminal, and two ends thereof respectively extending to two first screw holes, allowing the two first screws to be respectively screwed into the first screw holes and come into contact with the copper plate.
- The power plug of claim 7, wherein the second conductive member is a copper plate, which copper plate has two ends thereof respectively extending to two second screw holes, allowing the two second screws to be respectively screwed into the second screw holes and come into contact with the copper plate.
- The power plug of the claim 8, wherein the second conductive member has a central portion thereof being exposed to one of the first screw holes, and the third conductive member is a metallic spring installed in this first screw hole, and is pressed when one of the first screws is screwed into the first screw hole, in a manner that one end of the metallic spring abuts against the first screw, and the other end of the metallic spring adjoins the central portion of the second conductive member.
- A power plug, comprising:a terminal base having at least one conductive terminal and a ground terminal;an electric wire having core wires connected to the conductive terminal and the ground terminal, respectively;two covers integrally connected to the terminal base by a plurality of screws, and capable of being coupled to each other for enclosing the conductive terminal and the ground terminal therein; anda ground mechanism for connecting the screws to the ground terminal, allowing the screws to be grounded.
- The power plug of claim 10, wherein the ground mechanism includes a conductive member for connecting the screws to the ground mechanism.
- , The power plug of claim 11, wherein the conductive member is a copper plate provided on an inner wall of one of the covers, which copper plate has one end thereof extending toward the ground terminal, and pressed to abut against the ground terminal when the two covers are coupled to each other, whereas the other end of the copper plate extends to screw holes, allowing the screws to be respectively screwed into the screw holes and come into contact with the copper plate.
- The power plug of claim 11, wherein two of the screws are adopted in the power plug, and the conductive member is a T-shaped copper plate provided on an inner wall of one of the cover, which copper plate has a vertical end thereof extending toward the ground terminal, and pressed to abut against the ground terminal when the two covers are coupled to each other, whereas the other two ends of the copper plate respectively extend to two screw holes, allowing the two screws to be respectively screwed into the screw holes and come into contact with the copper plate.
- A power plug, comprising:a terminal base having at least one conductive terminal;an electric wire having core wires connected to the conductive terminal and a ground terminal, respectively;a cover integrally connected to the terminal base by a plurality of screws;a ground wire having one end thereof being connected to the ground terminal, and the other end thereof extending to outside of the power plug and connected to an external ground device; anda ground mechanism for connecting the screws to the ground terminal of the ground wire, allowing the screws to be grounded.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03250695A EP1445837B1 (en) | 2003-02-04 | 2003-02-04 | Power plug |
AT03250695T ATE382968T1 (en) | 2003-02-04 | 2003-02-04 | PLUG |
DE60318382T DE60318382D1 (en) | 2003-02-04 | 2003-02-04 | plug |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03250695A EP1445837B1 (en) | 2003-02-04 | 2003-02-04 | Power plug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1445837A1 true EP1445837A1 (en) | 2004-08-11 |
EP1445837B1 EP1445837B1 (en) | 2008-01-02 |
Family
ID=32605410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03250695A Expired - Lifetime EP1445837B1 (en) | 2003-02-04 | 2003-02-04 | Power plug |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1445837B1 (en) |
AT (1) | ATE382968T1 (en) |
DE (1) | DE60318382D1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4174874A (en) * | 1978-03-15 | 1979-11-20 | Hop Lee | Electric plug |
US4402565A (en) * | 1980-11-17 | 1983-09-06 | Leviton Manufacturing Company, Inc. | Positive retention electrical connector |
US4634211A (en) * | 1982-09-30 | 1987-01-06 | Leviton Manufacturing Company, Inc. | Wiring device system with single screw subassembly |
GB2282494A (en) * | 1993-09-22 | 1995-04-05 | Nifco Inc | Plug for electric wire |
US6287131B1 (en) * | 2000-07-17 | 2001-09-11 | C. C. Deng | Plug with a receiving member for grounding prong |
-
2003
- 2003-02-04 EP EP03250695A patent/EP1445837B1/en not_active Expired - Lifetime
- 2003-02-04 DE DE60318382T patent/DE60318382D1/en not_active Expired - Lifetime
- 2003-02-04 AT AT03250695T patent/ATE382968T1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4174874A (en) * | 1978-03-15 | 1979-11-20 | Hop Lee | Electric plug |
US4402565A (en) * | 1980-11-17 | 1983-09-06 | Leviton Manufacturing Company, Inc. | Positive retention electrical connector |
US4634211A (en) * | 1982-09-30 | 1987-01-06 | Leviton Manufacturing Company, Inc. | Wiring device system with single screw subassembly |
GB2282494A (en) * | 1993-09-22 | 1995-04-05 | Nifco Inc | Plug for electric wire |
US6287131B1 (en) * | 2000-07-17 | 2001-09-11 | C. C. Deng | Plug with a receiving member for grounding prong |
Also Published As
Publication number | Publication date |
---|---|
EP1445837B1 (en) | 2008-01-02 |
ATE382968T1 (en) | 2008-01-15 |
DE60318382D1 (en) | 2008-02-14 |
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