CA2111721A1 - Plug-in connector with anti-discharge element - Google Patents
Plug-in connector with anti-discharge elementInfo
- Publication number
- CA2111721A1 CA2111721A1 CA 2111721 CA2111721A CA2111721A1 CA 2111721 A1 CA2111721 A1 CA 2111721A1 CA 2111721 CA2111721 CA 2111721 CA 2111721 A CA2111721 A CA 2111721A CA 2111721 A1 CA2111721 A1 CA 2111721A1
- Authority
- CA
- Canada
- Prior art keywords
- connector
- plug
- contact elements
- discharge element
- electrically
- 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.)
- Abandoned
Links
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
- 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
- H01R13/6485—Electrostatic discharge protection
-
- 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
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6666—Structural association with built-in electrical component with built-in electronic circuit with built-in overvoltage protection
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Elimination Of Static Electricity (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Abstract of the Disclosure A plug-in connector adapted to eliminate the risk of undesirable static discharge includes a basic body constructed of electrically-insulating material and a plurality of contact elements arranged in rows therein. The contact elements are capable of receiving corresponding contact elements of a mating connector.
The plug-in connector includes an anti-discharge element arranged upstream of the contact elements in the direction of the mating connector, with the anti-discharge element connected to a ground as a protection potential. The anti-discharge element may comprise a metal strip arranged between the rows of contact elements or a metallic coating over the front surface of the body of theplug-in connector.
The plug-in connector includes an anti-discharge element arranged upstream of the contact elements in the direction of the mating connector, with the anti-discharge element connected to a ground as a protection potential. The anti-discharge element may comprise a metal strip arranged between the rows of contact elements or a metallic coating over the front surface of the body of theplug-in connector.
Description
- ' ' ' ' !` . ~;) ~
PLUG-IN CONNECTOR WITH ANTI-DI~CHARGE ELEM[ENT
' ' '"', Field of the Invention The invention relates to the field of connectors for computer devices? and in particlllar to a plug-in connector capable of preventing damage from accidental electrostatic discharges in such devices.
Back~round of the lnvention Plug-in connectors are well-known in the art, being used to facilitate coupling of computer devices to one another. A typical plug-in connector, such as a "SUB-D" plug-in connector, generally includes a number of contact elements (e.g., contact tubes) whose contact ends may be directed against a mating connector having compatible contact elements (e.g., contact plugs). Such 15 a plug-in connector generally includes an electrically-insulating body in which the contact elements are positioned. A common application for a plug-in connector of this type is as an interface for a stored-program controller, facilita~ing the coupling of a programming device to the controller.
In most common applications, the plug-in connector is freely accessible to promote ease of connectivity, often being installed in the back of a computerdevice to which a peripheral device may be connected and thus exposed to the - . :
, .. : ,' ' , ., ' ~
, . .
,, , i environrnent. This accessibility, however, creates the possibility that a personmay touch the plug-in connector either purposely or inadvertently. If this person is statically charged, an electrostatic discharge, or "spark-over," may occur. In many instances such a discharge is harmless, being dissipated by a screen 5 laterally surrounding the plug-in connector; however, in some cases a spark may flash-over onto one of the contact elements of the plug-in connector with potentially damaging results. For example, a spark striking a contact element of a plug-in connector installed in a stored-program controller may actually disturb a program run. Such an electrostatic discharge is especially undesirable10 in stored-program controllers used for safety-related applications where perfect functioning of the controller is typically an operational requirement.
One known approach for avoiding electrostatic discharge in plug-in connectors is to provide a removable cover for the plug-in connector to prevent inadvertent contact during operation. This approach is inadequate bec~use the cover must necessarily be removed in order to connect a device to the plug-in connector. The plug-in connector is thus left unprotected at the very time when the likelihood of touching the connector is greatest.
:
Another known approach is to provide protective circuits for the contact elements of the plug-in connector. While effective in protecting the contact elements from electrostatic discharge, such circuits are undesirable due to their complexity. Each contact element must be individually screened from static discharges. Moreover, the protective circuits undesirably re~uire additional space on the device in which the plug-in connector is installed.
Accordingly, there is a need for a reliable means for shielding a plug-in connector from undesirable electrostatic discharge that is simple, cost-effective and space-efficient.
, ' ,, Summar~ of the Invention The present invention provides a plug-in connector that eliminates the danger of undesirable electrostatic discharge more effectively than known shielding approaches and without the complexity of known protective circuit 5 approaches. The plug-in connector is advantageously simple in design, and therefore cost-effective to produce. Furthermore, it is fully-compatible with existing connectors with which a plug-in connector according to the present invention would mate.
In one embodiment of the present invention, a plug-in connector includes a metal strip arranged between two rows of external openings for the contact tubes into which corresponding contact plugs of a mating connector are inserted.This metal strip comprises an electrically-conductive anti-discharge element, and is connected to ground through, ~or example, the frame of the plug-in connector.15 The metal strip may be a distinct part that is secured to a lateral screen of the plug-in connector, or may be integrally formed as part of the lateral screen.
In another embodiment, the anti-discharge element comprises a metallic coating over the front surface of the plug-in connector. As with the metal strip20 in the first embodiment, the metallic coating is connected to ground.
The plug-in coMector of the present invention is adapted to eliminate the risk of undesirable electrostatic discharge in computer devices. The plug-in connector is especially well-suited to installation in stored-program controllers, 25 particularly those used ~or safety-related applications, but may be advantageously used in many types of telecommunications engineering applications.
A plug-in connector constructed in accordance with the present invention and installed in a device such as a stored-program controller satisfies the 30 stringent safety requirements of International Electrotechnical Comrnission (IEC) regulation 801-2. In addition, the present invention is fully compatible, both mechanically and electrically, with previously-used standard plug-in ~, ,, . ; , ~ , . ., ,, - , ,, ~ , . - " . .
.,. - : ~ , ., ; :, . . .
. ,'~ ,.,~ ' . . ' - , . ' . ' ' . ' . j , , ";
flJ~ 3 ~
-connectors. Furthermore, the simple design of the plug-in connector promotes cost-effective production. Since protective circuits for contact tubes are not necessary, a device in which the plug-in connector is installed will have additional space available for other features. Finally, the present invention's 5 solution to the problem of undesirable static discharge is robust and resistant to interference.
Brief Description o~the Drawin~s Fig. 1 shows the central unit of a stored-program controller equipped with 10 a plug-in connector.
Fig. 2 is a top plan view of a plug-in connector including a longitudinal anti-discharge element in accordance with an embodiment of the present invention. -Fig. 3 is a cross-sectional view of a plug-in connector including a 15 longitudinal anti-discharge element in accordance with an embodiment of the present invention.
Fig. 4 is a top plan view of a plug^in connector in accordance with an embodiment of the present invention including a metallic coating.
20 Detailed De~tion Fig. 1 shows an embodiment of the present invention in which a modularly constructed stored-program controller includes a housing 1 that holds a backup battery 2, power supply terminals 3, a plug-in memory submodule 4, and a RUN/STOP switch S including a status display. The housing 1 also holds 25 a plug-in connector 6, which is connected to an electronic circuit (not shown) arranged in the interior of the housing 1. The plug-in connector 6 serves as an interface for connecting a programming device (not shown) to the stored-program controller.
Referring now to Fig. 2, an embodiment of a plug-in connector 6 comprising a 15-pole SUB-D connector jack constructed in accordance with German Industrial Standard (DIN) 41652 is shown in top plan view. The plug-in , ,~,, ~' ' , - ' .
,........... .
_ S _ , connector 6 includes a lateral screen 7 connected to grownd through the frame of the plug-in connector 6. ~ front s~lrface 8 of an electrically-insulating basic body 9 includes a longitudinal groove 12 (shown in Fig. 3) extending between two rows 10, 11 of cutouts 15. A metal strip 13 is embedded in the longitudinal S groove 12 and serves as an anti-discharge element. The metal strip 13 ;s preferably joined to the screen 7. This joinirlg rnay be accomplished, for example, by soldering a distinct metal strip 13 to the screen 7 or by forming the metal strip 13 as an integral part of the screen 7.
Fig. 3 shows a cross-sectional view of the plug-in connector 6 shown in Fig. 2, with the cutting plane perpendicular to the plane of the top plan view.
The contact tubes 14 of the plug-in connector 6 are directed with their contact ends 14' towards a mating connector (not shown). The mating connector will include contact plugs corresponding to the contact tubes 14. The contact tubes 15 14 are secured in an electrically-insulating basic body 9 such that the frontsurface 8 is arranged between the contact tubes 14 and the contact plugs of the mating connector. The basic body 9, including the front surface 8, has cutouts 15 upstream o~ the contact tubes 14 to accept the plugs of the rnating connector, thereby facilitating connection to the plug-in connector 6.
Referring now to Fig. 4, another embodiment of a plug-in connector 6 includes a front surface X provided with a metallic coa~ing 16. The metallic coating 16 serves the same discharge-inhibiting function as the metal strip 13 of the embodiment shown in ~ig. 2. The metallic coating 16 is joined to the screen 25 7, and thus is connected to ground through the frame of the plug-in connector6. The metallic coating 16 includes a recess 17 for each cutout lS to prevent short circuits between the metallic coating 16 and the contact plugs of a matingconnector. The diameter D of each recess 17 is greater than the diameter d of the corresponding cutou~ 15.
While the present invention is described with reference to specific embodiments, it will be apparent to those skilled in the art that many modifica-. ... ... ~ . .. .. ...
, ~ . . .
, ., , , , ", .
:
.
., .... ..... ~............ , .
7 1~J- 6 -tions and variations are possible. Accordingly, the present invention embraces all alternatives, modifications and variations that fall within the spirit and scope of the appended claims, as well as all equivalents thereof.
.. . ~
PLUG-IN CONNECTOR WITH ANTI-DI~CHARGE ELEM[ENT
' ' '"', Field of the Invention The invention relates to the field of connectors for computer devices? and in particlllar to a plug-in connector capable of preventing damage from accidental electrostatic discharges in such devices.
Back~round of the lnvention Plug-in connectors are well-known in the art, being used to facilitate coupling of computer devices to one another. A typical plug-in connector, such as a "SUB-D" plug-in connector, generally includes a number of contact elements (e.g., contact tubes) whose contact ends may be directed against a mating connector having compatible contact elements (e.g., contact plugs). Such 15 a plug-in connector generally includes an electrically-insulating body in which the contact elements are positioned. A common application for a plug-in connector of this type is as an interface for a stored-program controller, facilita~ing the coupling of a programming device to the controller.
In most common applications, the plug-in connector is freely accessible to promote ease of connectivity, often being installed in the back of a computerdevice to which a peripheral device may be connected and thus exposed to the - . :
, .. : ,' ' , ., ' ~
, . .
,, , i environrnent. This accessibility, however, creates the possibility that a personmay touch the plug-in connector either purposely or inadvertently. If this person is statically charged, an electrostatic discharge, or "spark-over," may occur. In many instances such a discharge is harmless, being dissipated by a screen 5 laterally surrounding the plug-in connector; however, in some cases a spark may flash-over onto one of the contact elements of the plug-in connector with potentially damaging results. For example, a spark striking a contact element of a plug-in connector installed in a stored-program controller may actually disturb a program run. Such an electrostatic discharge is especially undesirable10 in stored-program controllers used for safety-related applications where perfect functioning of the controller is typically an operational requirement.
One known approach for avoiding electrostatic discharge in plug-in connectors is to provide a removable cover for the plug-in connector to prevent inadvertent contact during operation. This approach is inadequate bec~use the cover must necessarily be removed in order to connect a device to the plug-in connector. The plug-in connector is thus left unprotected at the very time when the likelihood of touching the connector is greatest.
:
Another known approach is to provide protective circuits for the contact elements of the plug-in connector. While effective in protecting the contact elements from electrostatic discharge, such circuits are undesirable due to their complexity. Each contact element must be individually screened from static discharges. Moreover, the protective circuits undesirably re~uire additional space on the device in which the plug-in connector is installed.
Accordingly, there is a need for a reliable means for shielding a plug-in connector from undesirable electrostatic discharge that is simple, cost-effective and space-efficient.
, ' ,, Summar~ of the Invention The present invention provides a plug-in connector that eliminates the danger of undesirable electrostatic discharge more effectively than known shielding approaches and without the complexity of known protective circuit 5 approaches. The plug-in connector is advantageously simple in design, and therefore cost-effective to produce. Furthermore, it is fully-compatible with existing connectors with which a plug-in connector according to the present invention would mate.
In one embodiment of the present invention, a plug-in connector includes a metal strip arranged between two rows of external openings for the contact tubes into which corresponding contact plugs of a mating connector are inserted.This metal strip comprises an electrically-conductive anti-discharge element, and is connected to ground through, ~or example, the frame of the plug-in connector.15 The metal strip may be a distinct part that is secured to a lateral screen of the plug-in connector, or may be integrally formed as part of the lateral screen.
In another embodiment, the anti-discharge element comprises a metallic coating over the front surface of the plug-in connector. As with the metal strip20 in the first embodiment, the metallic coating is connected to ground.
The plug-in coMector of the present invention is adapted to eliminate the risk of undesirable electrostatic discharge in computer devices. The plug-in connector is especially well-suited to installation in stored-program controllers, 25 particularly those used ~or safety-related applications, but may be advantageously used in many types of telecommunications engineering applications.
A plug-in connector constructed in accordance with the present invention and installed in a device such as a stored-program controller satisfies the 30 stringent safety requirements of International Electrotechnical Comrnission (IEC) regulation 801-2. In addition, the present invention is fully compatible, both mechanically and electrically, with previously-used standard plug-in ~, ,, . ; , ~ , . ., ,, - , ,, ~ , . - " . .
.,. - : ~ , ., ; :, . . .
. ,'~ ,.,~ ' . . ' - , . ' . ' ' . ' . j , , ";
flJ~ 3 ~
-connectors. Furthermore, the simple design of the plug-in connector promotes cost-effective production. Since protective circuits for contact tubes are not necessary, a device in which the plug-in connector is installed will have additional space available for other features. Finally, the present invention's 5 solution to the problem of undesirable static discharge is robust and resistant to interference.
Brief Description o~the Drawin~s Fig. 1 shows the central unit of a stored-program controller equipped with 10 a plug-in connector.
Fig. 2 is a top plan view of a plug-in connector including a longitudinal anti-discharge element in accordance with an embodiment of the present invention. -Fig. 3 is a cross-sectional view of a plug-in connector including a 15 longitudinal anti-discharge element in accordance with an embodiment of the present invention.
Fig. 4 is a top plan view of a plug^in connector in accordance with an embodiment of the present invention including a metallic coating.
20 Detailed De~tion Fig. 1 shows an embodiment of the present invention in which a modularly constructed stored-program controller includes a housing 1 that holds a backup battery 2, power supply terminals 3, a plug-in memory submodule 4, and a RUN/STOP switch S including a status display. The housing 1 also holds 25 a plug-in connector 6, which is connected to an electronic circuit (not shown) arranged in the interior of the housing 1. The plug-in connector 6 serves as an interface for connecting a programming device (not shown) to the stored-program controller.
Referring now to Fig. 2, an embodiment of a plug-in connector 6 comprising a 15-pole SUB-D connector jack constructed in accordance with German Industrial Standard (DIN) 41652 is shown in top plan view. The plug-in , ,~,, ~' ' , - ' .
,........... .
_ S _ , connector 6 includes a lateral screen 7 connected to grownd through the frame of the plug-in connector 6. ~ front s~lrface 8 of an electrically-insulating basic body 9 includes a longitudinal groove 12 (shown in Fig. 3) extending between two rows 10, 11 of cutouts 15. A metal strip 13 is embedded in the longitudinal S groove 12 and serves as an anti-discharge element. The metal strip 13 ;s preferably joined to the screen 7. This joinirlg rnay be accomplished, for example, by soldering a distinct metal strip 13 to the screen 7 or by forming the metal strip 13 as an integral part of the screen 7.
Fig. 3 shows a cross-sectional view of the plug-in connector 6 shown in Fig. 2, with the cutting plane perpendicular to the plane of the top plan view.
The contact tubes 14 of the plug-in connector 6 are directed with their contact ends 14' towards a mating connector (not shown). The mating connector will include contact plugs corresponding to the contact tubes 14. The contact tubes 15 14 are secured in an electrically-insulating basic body 9 such that the frontsurface 8 is arranged between the contact tubes 14 and the contact plugs of the mating connector. The basic body 9, including the front surface 8, has cutouts 15 upstream o~ the contact tubes 14 to accept the plugs of the rnating connector, thereby facilitating connection to the plug-in connector 6.
Referring now to Fig. 4, another embodiment of a plug-in connector 6 includes a front surface X provided with a metallic coa~ing 16. The metallic coating 16 serves the same discharge-inhibiting function as the metal strip 13 of the embodiment shown in ~ig. 2. The metallic coating 16 is joined to the screen 25 7, and thus is connected to ground through the frame of the plug-in connector6. The metallic coating 16 includes a recess 17 for each cutout lS to prevent short circuits between the metallic coating 16 and the contact plugs of a matingconnector. The diameter D of each recess 17 is greater than the diameter d of the corresponding cutou~ 15.
While the present invention is described with reference to specific embodiments, it will be apparent to those skilled in the art that many modifica-. ... ... ~ . .. .. ...
, ~ . . .
, ., , , , ", .
:
.
., .... ..... ~............ , .
7 1~J- 6 -tions and variations are possible. Accordingly, the present invention embraces all alternatives, modifications and variations that fall within the spirit and scope of the appended claims, as well as all equivalents thereof.
.. . ~
Claims (20)
1. A plug-in connector comprising:
(a) a body constructed of electrically-insulating material;
(b) a plurality of contact elements arranged in the body, the contact elements capable of receiving corresponding contact elements of a mating connector; and (c) an anti-discharge element arranged upstream of the contact elements in the direction of the mating connector, the anti-discharge element being connected to a protection potential.
(a) a body constructed of electrically-insulating material;
(b) a plurality of contact elements arranged in the body, the contact elements capable of receiving corresponding contact elements of a mating connector; and (c) an anti-discharge element arranged upstream of the contact elements in the direction of the mating connector, the anti-discharge element being connected to a protection potential.
2. The plug-in connector of claim 1 wherein the anti-discharge element is arranged in a front surface of the body proximate the mating connector.
3. The plug-in connector of claim 2 wherein said contact elements are arranged in at least two rows, the anti-discharge element further comprising an electrically-conductive strip extending between said at least two rows.
4. The plug-in connector of claim 3 wherein said electrically-conductive strip is embedded in the body of the plug-in connector.
5. The plug-in connector of claim 4 wherein the plug-in connector comprises a SUB-D connector.
6. The plug-in connector of claim 1 wherein said contact elements are arranged in at least two rows, the anti-discharge element further comprising a metal strip extending between the at least two rows of contact elements.
7. The plug-in connector of claim 6 wherein said metal strip is embedded in the body of the plug-in connector.
8. The plug-in connector of claim 2 wherein the anti-discharge element further comprises an electrically-conductive coating applied to the surface of the body proximate tile mating plug-in connector.
9. The plug-in connector of claim 8 wherein the body of the plug-in connector has a plurality of cutout areas corresponding to each of the pluralityof contact elements, said electrically-conductive coating further comprising recesses upstream of said cutouts in the body of the plug-in connector.
10. A SUB-D plug-in connector for a stored-program controller comprising:
(a) a body including a lateral screen and a front surface, the body being constructed of an electrically-insulating material;
(b) a plurality of contact elements arranged in the body in at least two rows and capable of receiving corresponding contact elements of a mating connector;
and (c) an anti-discharge element arranged upstream of the contact elements in the direction of the mating connector, the anti-discharge element being connected to a protection potential.
(a) a body including a lateral screen and a front surface, the body being constructed of an electrically-insulating material;
(b) a plurality of contact elements arranged in the body in at least two rows and capable of receiving corresponding contact elements of a mating connector;
and (c) an anti-discharge element arranged upstream of the contact elements in the direction of the mating connector, the anti-discharge element being connected to a protection potential.
11. The plug-in connector of claim 10 wherein the anti-discharge element further comprises an electrically-conductive strip extending between the at least two rows of contact elements.
12. The plug-in connector of claim 11 wherein the anti-discharge element further comprises an electrically-conductive strip embedded in the body of the plug-in connector.
13. The plug-in connector of claim 10 wherein the anti-discharge element further comprises an electrically-conductive coating applied to the front surface of the body.
14. The plug-in connector of claim 13 wherein the body of the plug-in connector has a plurality of cutout areas corresponding to each of the pluralityof contact elements, said electrically-conductive coating further comprising recesses upstream of said cutouts in the body of the plug-in connector.
15. The plug-connector of claim 14 wherein said recesses have a diameter greater than the diameter of the cutouts.
16. A stored-program controller adapted to be coupled to another device by a mating connector, the stored-program controller comprising a plug-in connector including a plurality of contact elements and an anti-discharge element arranged upstream of the plurality of contact elements in a direction ofthe mating connector.
17. The stored-program controller of claim 16 wherein said contact elements are arranged in a plurality of rows, the anti-discharge element comprising an electrically-conductive strip arranged between the plurality of rows of contact elements.
18. The plug-in connector of claim 17 wherein the anti-discharge element further comprises a metal strip embedded in a body of the plug-in connector.
19. The stored-program controller of claim 16 wherein the anti-discharge element comprises an electrically-conductive coating over a surface of the plug in connector proximate the mating connector.
20. The plug-in connector of claim 19 wherein the body of the plug-in connector has a plurality of cutout areas corresponding to each of the pluralityof contact elements, said electrically-conductive coating further comprising recesses upstream of said cutouts in the body of the plug-in connector.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9217460U DE9217460U1 (en) | 1992-12-21 | 1992-12-21 | |
| DEG9217460.4 | 1992-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2111721A1 true CA2111721A1 (en) | 1994-06-22 |
Family
ID=6887397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2111721 Abandoned CA2111721A1 (en) | 1992-12-21 | 1993-12-17 | Plug-in connector with anti-discharge element |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0603652A1 (en) |
| JP (1) | JPH06243935A (en) |
| CA (1) | CA2111721A1 (en) |
| DE (1) | DE9217460U1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0154825B1 (en) * | 1994-12-15 | 1998-11-16 | 김광호 | D-sub connector |
| US5618196A (en) * | 1995-08-18 | 1997-04-08 | Lucent Technologies, Inc. | Socket connector having improved protection against electrostatic discharges |
| DE19938070A1 (en) * | 1999-08-12 | 2001-03-15 | Siemens Ag | Switching / display device for control technology |
| DE10052628C2 (en) * | 2000-10-24 | 2002-09-12 | Abb Patent Gmbh | Electrostatic charge dissipation system |
| US6919505B2 (en) * | 2003-12-04 | 2005-07-19 | Eaton Corporation | Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations |
| DE102007044338A1 (en) | 2007-09-17 | 2009-04-02 | Rohde & Schwarz Gmbh & Co. Kg | Connector with modified insulator channel for shielding electromagnetic radiation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2945470A1 (en) * | 1979-11-10 | 1981-05-21 | Pulsotronic Merten Gmbh & Co Kg, 5270 Gummersbach | Programmable sequence control system - has microprocessor-based unit controlled by ROM or RAM with full input-output interface facility |
| JPS6077377A (en) * | 1983-10-04 | 1985-05-01 | ソニー株式会社 | Connector socket |
| US4824377A (en) * | 1988-02-03 | 1989-04-25 | Americal Telephone And Telegraph Company | Unmated pin connector having improved electrostatic discharge protection |
| DE9110657U1 (en) * | 1991-08-28 | 1991-10-10 | Siemens Ag, 8000 Muenchen, De |
-
1992
- 1992-12-21 DE DE9217460U patent/DE9217460U1/de not_active Expired - Lifetime
-
1993
- 1993-12-08 EP EP93119793A patent/EP0603652A1/en not_active Withdrawn
- 1993-12-15 JP JP34375793A patent/JPH06243935A/en not_active Withdrawn
- 1993-12-17 CA CA 2111721 patent/CA2111721A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06243935A (en) | 1994-09-02 |
| DE9217460U1 (en) | 1993-02-18 |
| EP0603652A1 (en) | 1994-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |