CA2160923A1 - A metal-encapsulated switch bay with a door lock that takes locking status into account - Google Patents
A metal-encapsulated switch bay with a door lock that takes locking status into accountInfo
- Publication number
- CA2160923A1 CA2160923A1 CA002160923A CA2160923A CA2160923A1 CA 2160923 A1 CA2160923 A1 CA 2160923A1 CA 002160923 A CA002160923 A CA 002160923A CA 2160923 A CA2160923 A CA 2160923A CA 2160923 A1 CA2160923 A1 CA 2160923A1
- Authority
- CA
- Canada
- Prior art keywords
- lock
- switch
- door
- driver
- bay
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/38—Hinged covers or doors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Lock And Its Accessories (AREA)
- Patch Boards (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Mechanisms For Operating Contacts (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Securing Of Glass Panes Or The Like (AREA)
- Casings For Electric Apparatus (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Trip Switchboards (AREA)
Abstract
A switch bay (1) incorporates a door arrangement (3) with a door lock (7) that comprises a lock element (25) with a lock shaft (32). A first driver (35) is installed on the lock shaft (32) with a second driver (42) that can move axially on the lock shaft (32). The first driver (35) actuates a door bolt (27), whereas the second driver (42) works in conjunction with a control slide (30), depending on its axial position, that is dependent on a cover for an access opening (24) of a drive system (83). A probe (31) actuates a control fork (40) for the second driver (42) as a function of the presence of a switch gear (12) in the switch chamber (10).
Description
FILE, ~ T~E~S A~r.~:Nur'~- 2 1 6 0 9 2 3 ~ TRaNSLATlON
A Metal-Encapsulated Switch Bay with a Door Lock that takes Locking Status into Account The present invention relates to a metal-encapsulated switch bay with a switch chamber and with switch gear that is arranged within this so as to be movable by means of a drive system, and with a door arrangement that closes off the switch chamber, within the door panel of which there is a door lock that takes the locking status into account and which incorporates a door bolt as well as at least one access opening for servicing the drive system.
A switch bay of this kind is described in a German company brochure published by Siemens:
Leistungsschalter-Einschubanlagen bis 24 kV, Type 8BJ20 [Type 8BJ20 Slide-in Power Switch Systems for up to 25kV], Catalogue Number HA 25.11, 1992, pp. 27 - 27.
It is the task of the present invention to incorporate the access opening for the drive system of the switch system into the locking status so as to render separate manipulation unnecessary.
This task has been solved according to the present invention in that the lock incorporates a lock element with a lock shaft and two drivers that are mounted on the lock shaft; the first of these drivers works in conjunction with the door bolt, whereas the second driver is arranged on the lock shaft so as to be axially movable and can be moved into or out of engagement with a control slide that indicates the position of a cover on the one access opening (of which there is at least one) for the drive system of the switch gear, the axial displacement of the second driver being controllable by a probe element that indicates the presence of the switch gear in the switch chamber. Since the angular position of the driver relative to the lock shaft can be selected as desired, the door bolt and the control slide can be arranged in the plane of the door panel in any direction to the lock shaft.
When this is done, this characteristic will depend on the type of lock element that is used, because these are available with standard lock shafts that can be operated in any way, e.g., for conventional switch-system keys (double beard keys with hollow journals), triangular keys, square keys, or conventional tool profiles.
According to one embodiment of the present invention, the control slide can incorporate a window-like aperture with a first section for the second driver and with a second section that overlaps the lock element. When this is done, the lock element serves as a guide for the control slide.
The axial movement of the second driver on the lock shaft chan be achieved in that the second driver is attached to a lock sleeve that can move axially on the lock shaft and is coupled rigidly to said shaft, and in that the lock sleeve incorporates a peripheral groove to engage with a control fork. The peripheral groove results in independence from the position of the probe that is provided for movement.
As a result of a second, practical, embodiment of the present invention, it can be ensured that the probe need be acted upon only against gravity in order to move the second driver. This can be achieved in that the control fork is tensioned by a return string into a position that is non-effective relative to the control slide and can be moved into an effective position by the probe, against the force of the return spring.
The functions and components that have being described above can just as well be combined to form a structural group that is ready for installation, in the same way as conventional door locks. To this end, the door lock can incorporate a lock casing in which the lock element is secured and in which the door bolt, the control slide, and the probe are guided so 2160q23 as to the movable, and in which the control fork is supported in such a way that it can pivot.
The lock system that has been described can be used in conjunction with any type of door arrangement. However, lift-type doors with multiple locking (see DE-A-33 02 696) are particularly well suited for switch bays of this type because these satisfy the most stringent demands for personal safety on account of their resistance to pressure.
In the case of such door arrangements it is recommended that the door bolt activates an inhibitor that prevents the lifting movement of a lifting mechanism that is part of the door system.
The present invention will be described in greater detail below on the basis of the embodiment that is shown in the drawings appended hereto.
Figure 1 is a simplified diagramatic view of a medium-voltage switch bay with a door lock, as viewed from the front.
Figure 2 shows the medium-voltage switch bay as in Figure 1, with the cover removed, in a side view.
Figures 3 and 4 show a lock casing with a door bolt, control slide, and probe as viewed from the front and from the side.
Figure 5 is a perspective view of the door lock, in which a lock casing and other parts have been cut away in order to reveal the essential elements.
The medium-voltage switch bay 1 that is shown in Figure 1 and Figure 2 has a housing 2 that is of sheet steel and incorporates a door system 3 that comprises a door 5 that can pivot on hinges 4 and which can be raised, as well as a lifting mechanism that is only indicated in the drawing. A
door lock 7 is secured to the inside of the door 5, and this 21 60~23 will be described in greater detail on the basis of Figure 3, Figure 4, and Figure 5. First, the construction of the medium-voltage switch bay will be described briefly. As can be seen in greater detail in Figure 2, the housing 2 comprises a switch chamber 10 in which switch gear, in the example shown a vacuum power switch 12, is arranged so as to be movable on the rails 11. In the operating position that is shown, this is connected by way of an upper breaker contact 13 to bus bars 14. The output side of the power switch 12 is connected by way of lower breaker contacts 15 to the cables 17 by way of a voltage converter 16. A ground breaker 18 that is installed beneath the voltage converter 16 makes it possible to ground the cable 17.
Above the switch chamber 10, the medium-voltage switch bay 1 has a low-voltage casing 20, within the low-voltage chamber 21 of which there are the devices, and operating and display systems that are required for control and monitoring. A door 22 that closes off the low voltage chamber 21 is located above the door 5.
A drive system 23 that can be locked in the front part, between the side beams of the housing 2, is provided to move the power switch 12 (as indicated by the double arrow 29); two axis openings 24 are arranged in the door 5 (Figure 5) in order to permit operation of this in the manner known per se.
One of these access openings 24 is used to insert a hand crank, whereas the second is provided for a locking key.
The lock 7 (Figure 3 and Figure 4) has a lock element 25 that, in the example shown, is configured for operation by a conventional switch system key (double beard with hollow shaft). However, it is possible to use a lock element for keys of any suitable type without affecting the function of the lock 7, which will be described below. A door bolt 27 is supported within the lock casing 26 of the lock 7 in such a way that it can be moved to the left. The door bolt 27 operates an iinhibitor 28 (Figure 1), that either locks or releases the lifting mechanism 6, depending on the manner in which the lock 7 is operated. In addition, within the lock casing 26 there is a control slide 30 that emerges underneath and which signals the position of a cover (not shown herein) for the access openings 24 (Figure 1) and which is secured if the power switch 12 (Figure 2) is in the operating position.
A probe 31 that also emerges at the underside of the lock casing determines the status as to whether or not there is switch gear within the switch chamber 10 (Figure 2). The manner in which the door bolt 27, the control slide 30, and the probe 31 move is indicated by the dashed lines in Figure 5.
The construction and the manner in which the door lock 7 operates will now be described on the basis of Figure 5. This figure shows the door lock as viewed from the back, so that it is not the opening for the key, but rather a lock shaft 32 that is to be operated by this that can be seen. The lock shaft 32 is supported in a lock body 33 of the lock element 25 that extends through an opening in the lock casing 26 and is secured to this by means of a nut 34. The lock shaft 32 has at its end a first driver 35 that fits into a recess 36 in the door bolt 27, so that the door bolt 27 can be moved in the direction indicated by the double arrow 37 (see Figure 3) by the rotation of the lock shaft 32.
The lock shaft 32 incorporates a key 38 to connect it rigidly to a switch sleeve 40 that can move axially and is provided with a peripheral groove 41. There is a second driver 42 on the switch sleeve 40, and when this is in an appropriate axial position it works in conjunction with the control slide 30 in order to move this in the direction indicated by the double arrow 39 (see Figure 3 and Figure 4). A control fork 43 is provided to operate the switch sleeve 40 and this has blades 44 and 45 that fit in the peripheral grooved 41. The control fork 43 can pivot about the pivot pin 46 (double arrow 47), the associated bearing openings for which cannot be seen 21 60~23 because parts of the lock casing 26 have been cut away in Figure 5. The position of the control fork is affected by the probe 31 that is also supported so as to be movable within the lock casing 26 as indicated by the double arrow 39 and which incorporates a slide 48 inside the lock casing 26.
When the probe 31 and thus the slide 48 are in the position that is shown in Figure 5, the control fork 43 is pivoted against the force of the return string 50 into its active position, in which the second driver 42 is in a window-like aperture 51 in the control slide 30. In order to achieve the desired movement of the control slide 30, the window-like recess 41 incorporates a first section 52 and a second section 53. If the second driver 42 is in the first section 52, as is shown in Figure 5, then there is a coupling between the control slide 30 and the lock shaft 32 such that this cannot rotate, or can rotate only by a limited amount when the control slide is blocked. The second section 53 is a release that depends on the diameter of the lock body 33 and the travel of the control slide 30 in order to transfer the position of the previously mentioned closing flap in front of the access openings 24 (31) to the control slide 30 there is an interrogation tab 49 on this.
If there is no power switch 12 (Figure 2) the probe 31 and with it the slide 48 are pushed downwards by the action of a return spring 54. This means that the control fork 43 is pivoted about the pivot pin 46 into the position that is indicated by the dashed lines, by the action of the associated return string 50 and the switch sleeve 50 is moved with the second driver 42 into its non-effective position relative to the control slide 30.
As is also indicated by the dashed lines in Figure 5, starting from the effective position of the switch sleeve 40, the control fork can be rotated further in a clock-wise direction until the second driver is also in a non-effective position.
21 60~23 This pivoting of the control fork 43 can be effected by means of a tool that can be introduced through an opening provided in the lock casing 26 for this purpose. This type of emergency operation can be used if the movable power switch 12 is blocked by failure of its drive system, so that the door 5 has to be opened.
A Metal-Encapsulated Switch Bay with a Door Lock that takes Locking Status into Account The present invention relates to a metal-encapsulated switch bay with a switch chamber and with switch gear that is arranged within this so as to be movable by means of a drive system, and with a door arrangement that closes off the switch chamber, within the door panel of which there is a door lock that takes the locking status into account and which incorporates a door bolt as well as at least one access opening for servicing the drive system.
A switch bay of this kind is described in a German company brochure published by Siemens:
Leistungsschalter-Einschubanlagen bis 24 kV, Type 8BJ20 [Type 8BJ20 Slide-in Power Switch Systems for up to 25kV], Catalogue Number HA 25.11, 1992, pp. 27 - 27.
It is the task of the present invention to incorporate the access opening for the drive system of the switch system into the locking status so as to render separate manipulation unnecessary.
This task has been solved according to the present invention in that the lock incorporates a lock element with a lock shaft and two drivers that are mounted on the lock shaft; the first of these drivers works in conjunction with the door bolt, whereas the second driver is arranged on the lock shaft so as to be axially movable and can be moved into or out of engagement with a control slide that indicates the position of a cover on the one access opening (of which there is at least one) for the drive system of the switch gear, the axial displacement of the second driver being controllable by a probe element that indicates the presence of the switch gear in the switch chamber. Since the angular position of the driver relative to the lock shaft can be selected as desired, the door bolt and the control slide can be arranged in the plane of the door panel in any direction to the lock shaft.
When this is done, this characteristic will depend on the type of lock element that is used, because these are available with standard lock shafts that can be operated in any way, e.g., for conventional switch-system keys (double beard keys with hollow journals), triangular keys, square keys, or conventional tool profiles.
According to one embodiment of the present invention, the control slide can incorporate a window-like aperture with a first section for the second driver and with a second section that overlaps the lock element. When this is done, the lock element serves as a guide for the control slide.
The axial movement of the second driver on the lock shaft chan be achieved in that the second driver is attached to a lock sleeve that can move axially on the lock shaft and is coupled rigidly to said shaft, and in that the lock sleeve incorporates a peripheral groove to engage with a control fork. The peripheral groove results in independence from the position of the probe that is provided for movement.
As a result of a second, practical, embodiment of the present invention, it can be ensured that the probe need be acted upon only against gravity in order to move the second driver. This can be achieved in that the control fork is tensioned by a return string into a position that is non-effective relative to the control slide and can be moved into an effective position by the probe, against the force of the return spring.
The functions and components that have being described above can just as well be combined to form a structural group that is ready for installation, in the same way as conventional door locks. To this end, the door lock can incorporate a lock casing in which the lock element is secured and in which the door bolt, the control slide, and the probe are guided so 2160q23 as to the movable, and in which the control fork is supported in such a way that it can pivot.
The lock system that has been described can be used in conjunction with any type of door arrangement. However, lift-type doors with multiple locking (see DE-A-33 02 696) are particularly well suited for switch bays of this type because these satisfy the most stringent demands for personal safety on account of their resistance to pressure.
In the case of such door arrangements it is recommended that the door bolt activates an inhibitor that prevents the lifting movement of a lifting mechanism that is part of the door system.
The present invention will be described in greater detail below on the basis of the embodiment that is shown in the drawings appended hereto.
Figure 1 is a simplified diagramatic view of a medium-voltage switch bay with a door lock, as viewed from the front.
Figure 2 shows the medium-voltage switch bay as in Figure 1, with the cover removed, in a side view.
Figures 3 and 4 show a lock casing with a door bolt, control slide, and probe as viewed from the front and from the side.
Figure 5 is a perspective view of the door lock, in which a lock casing and other parts have been cut away in order to reveal the essential elements.
The medium-voltage switch bay 1 that is shown in Figure 1 and Figure 2 has a housing 2 that is of sheet steel and incorporates a door system 3 that comprises a door 5 that can pivot on hinges 4 and which can be raised, as well as a lifting mechanism that is only indicated in the drawing. A
door lock 7 is secured to the inside of the door 5, and this 21 60~23 will be described in greater detail on the basis of Figure 3, Figure 4, and Figure 5. First, the construction of the medium-voltage switch bay will be described briefly. As can be seen in greater detail in Figure 2, the housing 2 comprises a switch chamber 10 in which switch gear, in the example shown a vacuum power switch 12, is arranged so as to be movable on the rails 11. In the operating position that is shown, this is connected by way of an upper breaker contact 13 to bus bars 14. The output side of the power switch 12 is connected by way of lower breaker contacts 15 to the cables 17 by way of a voltage converter 16. A ground breaker 18 that is installed beneath the voltage converter 16 makes it possible to ground the cable 17.
Above the switch chamber 10, the medium-voltage switch bay 1 has a low-voltage casing 20, within the low-voltage chamber 21 of which there are the devices, and operating and display systems that are required for control and monitoring. A door 22 that closes off the low voltage chamber 21 is located above the door 5.
A drive system 23 that can be locked in the front part, between the side beams of the housing 2, is provided to move the power switch 12 (as indicated by the double arrow 29); two axis openings 24 are arranged in the door 5 (Figure 5) in order to permit operation of this in the manner known per se.
One of these access openings 24 is used to insert a hand crank, whereas the second is provided for a locking key.
The lock 7 (Figure 3 and Figure 4) has a lock element 25 that, in the example shown, is configured for operation by a conventional switch system key (double beard with hollow shaft). However, it is possible to use a lock element for keys of any suitable type without affecting the function of the lock 7, which will be described below. A door bolt 27 is supported within the lock casing 26 of the lock 7 in such a way that it can be moved to the left. The door bolt 27 operates an iinhibitor 28 (Figure 1), that either locks or releases the lifting mechanism 6, depending on the manner in which the lock 7 is operated. In addition, within the lock casing 26 there is a control slide 30 that emerges underneath and which signals the position of a cover (not shown herein) for the access openings 24 (Figure 1) and which is secured if the power switch 12 (Figure 2) is in the operating position.
A probe 31 that also emerges at the underside of the lock casing determines the status as to whether or not there is switch gear within the switch chamber 10 (Figure 2). The manner in which the door bolt 27, the control slide 30, and the probe 31 move is indicated by the dashed lines in Figure 5.
The construction and the manner in which the door lock 7 operates will now be described on the basis of Figure 5. This figure shows the door lock as viewed from the back, so that it is not the opening for the key, but rather a lock shaft 32 that is to be operated by this that can be seen. The lock shaft 32 is supported in a lock body 33 of the lock element 25 that extends through an opening in the lock casing 26 and is secured to this by means of a nut 34. The lock shaft 32 has at its end a first driver 35 that fits into a recess 36 in the door bolt 27, so that the door bolt 27 can be moved in the direction indicated by the double arrow 37 (see Figure 3) by the rotation of the lock shaft 32.
The lock shaft 32 incorporates a key 38 to connect it rigidly to a switch sleeve 40 that can move axially and is provided with a peripheral groove 41. There is a second driver 42 on the switch sleeve 40, and when this is in an appropriate axial position it works in conjunction with the control slide 30 in order to move this in the direction indicated by the double arrow 39 (see Figure 3 and Figure 4). A control fork 43 is provided to operate the switch sleeve 40 and this has blades 44 and 45 that fit in the peripheral grooved 41. The control fork 43 can pivot about the pivot pin 46 (double arrow 47), the associated bearing openings for which cannot be seen 21 60~23 because parts of the lock casing 26 have been cut away in Figure 5. The position of the control fork is affected by the probe 31 that is also supported so as to be movable within the lock casing 26 as indicated by the double arrow 39 and which incorporates a slide 48 inside the lock casing 26.
When the probe 31 and thus the slide 48 are in the position that is shown in Figure 5, the control fork 43 is pivoted against the force of the return string 50 into its active position, in which the second driver 42 is in a window-like aperture 51 in the control slide 30. In order to achieve the desired movement of the control slide 30, the window-like recess 41 incorporates a first section 52 and a second section 53. If the second driver 42 is in the first section 52, as is shown in Figure 5, then there is a coupling between the control slide 30 and the lock shaft 32 such that this cannot rotate, or can rotate only by a limited amount when the control slide is blocked. The second section 53 is a release that depends on the diameter of the lock body 33 and the travel of the control slide 30 in order to transfer the position of the previously mentioned closing flap in front of the access openings 24 (31) to the control slide 30 there is an interrogation tab 49 on this.
If there is no power switch 12 (Figure 2) the probe 31 and with it the slide 48 are pushed downwards by the action of a return spring 54. This means that the control fork 43 is pivoted about the pivot pin 46 into the position that is indicated by the dashed lines, by the action of the associated return string 50 and the switch sleeve 50 is moved with the second driver 42 into its non-effective position relative to the control slide 30.
As is also indicated by the dashed lines in Figure 5, starting from the effective position of the switch sleeve 40, the control fork can be rotated further in a clock-wise direction until the second driver is also in a non-effective position.
21 60~23 This pivoting of the control fork 43 can be effected by means of a tool that can be introduced through an opening provided in the lock casing 26 for this purpose. This type of emergency operation can be used if the movable power switch 12 is blocked by failure of its drive system, so that the door 5 has to be opened.
Claims (6)
1. A metal encapsulated switch bay (1) with a switch chamber (10) and with switch gear (12) that is arranged within this so as to be movable by means of a drive system (23), and with a door arrangement (3) that closes off the switch chamber, within the door panel (5) of which there is a door lock (7) that takes the locking status into account and which incorporates a door bolt (27) as well as at least one access opening (24) for servicing the drive system (23), characterized in that the lock (7) incorporates a lock element (25) with a lock shaft (32) and two drivers (35, 42) that are mounted on the lock shaft(32), the first of these drivers (35) working in conjunction with the door bolt (27), whereas the second driver is arranged on the lock shaft (32) so as to be axially movable and can be moved into or out of engagement with a control slide (30) that signals the position of a cover on at least one access opening (24) for the drive system (23) of the switch gear (12), the axial displacement of the second driver (42) being controllable by a probe that indicates the presence of the switch gear (12) in the switch chamber (10).
2. A metal encapsulated switch bay as defined in Claim 1, characterized in that the control slide (30) has a window-like recess (51) with a first section (52) for the second driver (42) and with a second section that overlaps the lock element.
3. A metal encapsulated switch bay as defined in Claim 1 or Claim 2, characterized in that the second driver (42) is mounted on a switch sleeve (40) that can move axially on the lock shaft (32) and which is locked onto this; and in that the switch sleeve (40) incorporates a peripheral groove (41) for the engagement of a control fork (43).
4. A metal encapsulated switch bay as defined in one of the preceding claims, characterized in that the control fork (43) is kept in a non-effective position relative to the control slide (30) by a return spring (50) and can be moved into an effective position by the probe (31) against the force of the return spring (50).
5. A metal encapsulated switch bay as defined in one of the preceding claims, characterized in that the door lock (7) has a lock casing (26) in which the lock element (25) is secured and within which the door bolt (27), the control slide (30), and the probe (31) are supported so as to be movable (37, 39) and the control fork (34) is supported so as to be pivotable (46).
6. A metal encapsulated switch bay as defined in one of the preceding claims, characterized in that the door bolt (27) activates an inhibitor (28) that prevents the lifting movement of a lifting mechanism (6) that is part of the door arrangement.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4313659.1 | 1993-04-20 | ||
| DE4313659A DE4313659A1 (en) | 1993-04-20 | 1993-04-20 | Metal-enclosed control panel with a lock that takes locking conditions into account |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2160923A1 true CA2160923A1 (en) | 1994-10-27 |
Family
ID=6486424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002160923A Abandoned CA2160923A1 (en) | 1993-04-20 | 1994-04-19 | A metal-encapsulated switch bay with a door lock that takes locking status into account |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0695471B1 (en) |
| CN (1) | CN1041261C (en) |
| AT (1) | ATE155934T1 (en) |
| BR (1) | BR9406475A (en) |
| CA (1) | CA2160923A1 (en) |
| DE (2) | DE4313659A1 (en) |
| EG (1) | EG20480A (en) |
| RU (1) | RU2110658C1 (en) |
| TR (1) | TR27685A (en) |
| WO (1) | WO1994024741A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015205282A1 (en) * | 2015-03-24 | 2016-09-29 | Siemens Aktiengesellschaft | Locking device for a switch room and switch room with such a locking device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2851549A (en) * | 1957-02-18 | 1958-09-09 | Brown Boveri Canada Ltd | Metalclad switchgear with interlock |
| US3783209A (en) * | 1972-10-31 | 1974-01-01 | Westinghouse Electric Corp | Mechanism for holding and levering large draw out type circuit breakers |
-
1993
- 1993-04-20 DE DE4313659A patent/DE4313659A1/en not_active Withdrawn
-
1994
- 1994-04-19 EP EP94913500A patent/EP0695471B1/en not_active Expired - Lifetime
- 1994-04-19 CN CN94191839A patent/CN1041261C/en not_active Expired - Fee Related
- 1994-04-19 CA CA002160923A patent/CA2160923A1/en not_active Abandoned
- 1994-04-19 AT AT94913500T patent/ATE155934T1/en not_active IP Right Cessation
- 1994-04-19 TR TR00359/94A patent/TR27685A/en unknown
- 1994-04-19 DE DE59403469T patent/DE59403469D1/en not_active Expired - Fee Related
- 1994-04-19 EG EG22294A patent/EG20480A/en active
- 1994-04-19 WO PCT/DE1994/000514 patent/WO1994024741A1/en active IP Right Grant
- 1994-04-19 BR BR9406475A patent/BR9406475A/en not_active Application Discontinuation
- 1994-04-19 RU RU95119826A patent/RU2110658C1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| TR27685A (en) | 1995-06-16 |
| DE4313659A1 (en) | 1994-10-27 |
| CN1121379A (en) | 1996-04-24 |
| ATE155934T1 (en) | 1997-08-15 |
| RU2110658C1 (en) | 1998-05-10 |
| DE59403469D1 (en) | 1997-08-28 |
| CN1041261C (en) | 1998-12-16 |
| EG20480A (en) | 1999-05-31 |
| EP0695471A1 (en) | 1996-02-07 |
| WO1994024741A1 (en) | 1994-10-27 |
| BR9406475A (en) | 1996-01-23 |
| EP0695471B1 (en) | 1997-07-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |