CN220233043U - Emergency starting alternating current contactor - Google Patents
Emergency starting alternating current contactor Download PDFInfo
- Publication number
- CN220233043U CN220233043U CN202321383847.3U CN202321383847U CN220233043U CN 220233043 U CN220233043 U CN 220233043U CN 202321383847 U CN202321383847 U CN 202321383847U CN 220233043 U CN220233043 U CN 220233043U
- Authority
- CN
- China
- Prior art keywords
- energy storage
- driving shaft
- contactor
- emergency starting
- driving
- 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.)
- Active
Links
- 238000004146 energy storage Methods 0.000 claims abstract description 72
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to an emergency starting alternating-current contactor, which comprises a bottom plate, two alternating-current contactors and two emergency starting devices, wherein the emergency starting devices comprise a shell and two energy storage operating mechanisms, an interlocking transmission mechanism for controlling the two energy storage operating mechanisms to synchronously execute opening and closing actions is arranged between the two emergency starting devices, clamping grooves matched with the two alternating-current contactors are respectively arranged on the shells of the two emergency starting devices, clamping convex blocks matched with the clamping grooves are respectively arranged on the two alternating-current contactors, the clamping convex blocks are clamped in the clamping grooves, the two emergency starting devices are matched with the clamping grooves of the two alternating-current contactors in a clamping mode, a supporting plate is arranged between the shells of the two emergency starting devices and the bottom plate, and a fixing plate is arranged between the shells of the two emergency starting devices. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly, small volume and capability of effectively realizing the quick separation and the quick combination of the two contactors.
Description
Technical Field
The utility model relates to the technical field of piezoelectric devices, in particular to an emergency starting alternating current contactor.
Background
The contactor is an electric appliance which uses a coil to flow current to generate a magnetic field in industrial electricity so as to close a contact to control a load. The contactor is widely applied to a control circuit of a fire pump, and under the normal condition of the control circuit, after a coil of the contactor is electrified, current flowing through the coil generates a magnetic field to enable an armature to attract an iron core and drive a main contact of the contactor to be closed, and a main loop is connected. When the coil of the contactor is powered off, the current flowing through the coil disappears, the electromagnetic attraction force of the armature also disappears, and the armature is released under the action of the release spring, so that the main contact of the contactor is separated, and the main circuit is disconnected. The power for the contactor action is due to the magnetic field generated by the passage of current through the ferrous coil. Therefore, under the condition that the controller fails or the control circuit fails, the conventional contactor loses a power source for action, so that the main contact cannot act. At this time, if a fire occurs, the fire pump cannot be started, and the fire control system fails. Therefore, an emergency starting ac contactor for controlling a contactor is appeared in the market, and is mainly used for mechanically starting the fire pump in emergency by personnel with management authority when a fire pump cabinet controller or a contactor secondary circuit for controlling the fire pump fails, or other occasions requiring mechanical emergency starting of the fire pump in emergency. The existing emergency starting alternating-current contactor comprises two alternating-current contactors and two energy storage operating mechanisms arranged on the two alternating-current contactors, the assembly of the two alternating-current contactors and the two energy storage operating mechanisms is complicated, the assembly efficiency is low, and the two energy storage operating mechanisms cannot realize rapid switching-on and switching-off of the two alternating-current contactors at the same time, so that the breaking capacity of the two alternating-current contactors is weak.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides the emergency starting alternating current contactor which has the advantages of simple structure, stable and reliable performance, convenience in assembly and small volume and can effectively realize the quick opening and closing of two contactors.
In order to achieve the above purpose, the utility model adopts an emergency starting alternating current contactor, which comprises a bottom plate, two alternating current contactors arranged on the bottom plate, and two emergency starting devices respectively arranged on the two alternating current contactors, wherein the emergency starting devices comprise a shell and two energy storage operating mechanisms which are arranged in the shell and are used for driving the two alternating current contactors to open and close, an interlocking transmission mechanism for controlling the two energy storage operating mechanisms to synchronously execute opening and closing actions is arranged between the two emergency starting devices, clamping grooves matched with the two alternating current contactors are respectively arranged on the shell of the two emergency starting devices, clamping convex blocks matched with the clamping grooves are respectively arranged on the two alternating current contactors, the clamping convex blocks are clamped in the clamping grooves, the two emergency starting devices are matched with the clamping grooves in a clamping mode, a supporting plate is arranged between the shell of the two emergency starting devices and the bottom plate, and a fixing plate is arranged between the shell of the two emergency starting devices.
The beneficial effects of the structure are as follows: the two alternating-current contactors and the two emergency starting devices are assembled in a clamping and matching mode, the assembly efficiency is higher, and the two emergency starting devices are connected with the bottom plate through the supporting plate, so that the assembly of the alternating-current contactors is facilitated. The interlocking transmission mechanism can play a role in interlocking and transmission, so that the two energy storage operation mechanisms can execute closing or opening actions simultaneously, and the synchronism is better. And the energy storage operating mechanism adopts an energy storage type operating structure design, so that the purpose of quick opening and closing of the emergency starting alternating current contactor can be realized. Therefore, the emergency starting alternating current contactor has the advantages of simple structure, stable and reliable performance, convenience in assembly, small size and capability of effectively realizing quick separation and quick combination of the two contactors.
The energy storage operating mechanism comprises a machine frame, a rotating shaft, a first driving arm, a driving shaft, a second driving arm, an energy storage spring assembly, a push plate, a push block and a connecting rod, wherein the rotating shaft is arranged on the machine frame, the first driving arm is in linkage fit with the rotating shaft, the driving shaft is in linkage fit with the first driving arm, the second driving arm is arranged on the rotating shaft in linkage fit with the driving shaft in a rotating mode, the energy storage spring assembly is arranged between the driving shaft and the machine frame, the push plate is arranged on the machine frame in a sliding mode and in linkage fit with the driving shaft, the push block is arranged in the shell in a sliding mode, the connecting rod is arranged between the push plate and the push block, and the push block acts along with the connecting rod and can drive alternating current contact to execute opening or closing actions. The energy storage operating mechanism adopts an energy storage type operating structure design, the energy storage spring group can play an energy storage role, the action of the push plate can be accelerated, the rotating shaft drives the first driving arm to act in the working process, the first driving arm drives the second driving arm to act through the driving shaft, the driving shaft compresses the energy storage spring component, the energy storage of the energy storage spring is realized, when the second driving arm and the driving shaft pass through dead points (midpoints), the energy storage spring releases energy, the driving shaft drives the push plate to rapidly slide, the push plate drives the push block to rapidly slide through the connecting rod, and the push blocks of the two groups of emergency starting mechanisms respectively push the closing buttons of the two alternating current contactors, so that the rapid opening or closing of the two alternating current contactors is realized, and the breaking capacity of a product can be effectively improved.
The interlocking transmission mechanism comprises two groups of gear sets respectively arranged on the two energy storage operation mechanisms and a transmission plate arranged between the two gear sets, wherein the gear sets comprise gears arranged on a rotating shaft in a linkage manner and racks meshed with the gears, and two ends of the transmission plate are respectively connected to the racks of the two groups of gear sets. The interlocking transmission mechanism adopts a gear rack structural design, and can play an interlocking role, so that two energy storage operation mechanisms can be ensured to simultaneously execute closing or opening actions, and the synchronism is better.
Particularly, the rotating shaft on be provided with the indicator, the indicator on one end set gradually and be exposed outside the casing indicate sleeve, operating handle sleeve, the casing on be provided with indication sleeve matched with brake release indicator, brake closure indicator. The indicating sleeve on the indicating piece can carry out opening indication and closing indication on the working state of the energy storage operating mechanism, so that an operator can intuitively know the working state of the emergency starting alternating current contactor, and the safety is higher. Particularly, a micro switch matched with a rack is arranged in the shell, a wiring terminal electrically connected with the micro switch is arranged on the shell, a groove for triggering the micro switch is arranged on the rack, the rack acts along with the gear teeth and can trigger the micro switch, and the micro switch can be switched on or off. The micro-switch can monitor the working positions of the two emergency starting operation mechanisms, and the micro-switch can send the monitored signals to the background, so that the working state of the energy storage type emergency starting device is remotely monitored.
The energy storage spring assembly comprises a spring support rotatably arranged on a positioning shaft of the machine frame and an energy storage spring sleeved on the spring support, two ends of the energy storage spring respectively abut against limiting blocks of the driving shaft and the spring support, a guide chute matched with the driving shaft is arranged on the spring support, and the driving shaft moves along with the first driving arm and can reciprocate in the guide chute. The drive shaft is arranged in the guide chute of the spring support in a sliding manner, so that the drive shaft can reliably compress the energy storage spring, and the energy storage spring can reliably store energy and release energy. When the driving device works, the first driving arm drives the driving shaft to compress the energy storage spring, the energy storage spring compresses and stores energy, when the first driving arm and the driving shaft pass through dead points (midpoints), the energy storage spring releases energy, the energy released by the energy storage spring can drive the driving shaft to quickly act, the driving shaft can drive the push plate and the push block to quickly act, and the push block pushes the button of the alternating current contactor, so that quick separation and quick combination of the alternating current contactor are realized.
Particularly, a guide sliding hole is formed in the first driving arm, corresponding to the driving shaft, and the driving shaft is arranged in the guide sliding hole in a penetrating mode. The driving shaft is arranged in the guide sliding hole of the first driving arm in a penetrating way, so that the first driving arm can reliably drive the driving shaft to act, and the working reliability of the emergency starting alternating current contactor is improved.
Particularly, arc-shaped guide holes are respectively arranged at two ends of the machine frame, which correspond to the driving shafts, the two ends of the driving shafts are arranged in the arc-shaped guide holes in a penetrating way, and the driving shafts are matched with the machine frame in a sliding connection way. The two ends of the driving shaft are respectively arranged in the arc-shaped guide holes of the machine frame in a sliding way, so that the driving shaft can reliably act, and the working reliability of the emergency starting alternating current contactor can be improved.
Drawings
Fig. 1 is a perspective view of an embodiment of the present utility model.
Fig. 2 is an exploded view of an emergency starting apparatus according to an embodiment of the present utility model.
Fig. 3 is a perspective view of an energy storage operating mechanism according to an embodiment of the present utility model.
Fig. 4 is a perspective view of an embodiment of a power spring assembly according to the present utility model.
Detailed Description
As shown in fig. 1 to 4, the embodiment of the utility model is an emergency starting ac contactor, which comprises a bottom plate 10, two ac contactors 11 arranged on the bottom plate 10, and two emergency starting devices 20 respectively arranged on the two ac contactors 11, wherein the emergency starting devices 20 comprise a shell 21 and an energy storage operating mechanism 22 arranged in the shell 21 and used for driving the two ac contactors 11 to open and close, an interlocking transmission mechanism 40 used for controlling the two energy storage operating mechanisms 22 to synchronously execute the opening and closing actions is arranged between the two emergency starting devices 20, the shell 21 of the two emergency starting devices 20 is respectively provided with a clamping groove 211 matched with the two ac contactors 11, the two ac contactors 11 are respectively provided with a clamping convex block 111 matched with the clamping grooves 211, the clamping convex blocks 111 are clamped in the clamping grooves 211, the two emergency starting devices 20 are matched with the clamping of the two ac contactors 10, an interlocking transmission mechanism 40 used for controlling the two energy storage operating mechanisms 22 to synchronously execute opening and closing actions is arranged between the shell 21 of the two emergency starting devices 20 and the bottom plate 10, and a fixing plate 13 is arranged between the two emergency starting devices 20 and the shell 21. The energy storage operating mechanism 22 comprises a machine frame 23, a rotating shaft 24 arranged on the machine frame 23 in a rotating mode, a first driving arm 25 in linkage fit with the rotating shaft 24, a driving shaft 26 in linkage fit with the first driving arm 25, a second driving arm 27 in linkage fit with the driving shaft 26 in a rotating mode, an energy storage spring assembly 28 arranged between the driving shaft 26 and the machine frame 23, a push plate 29 arranged on the machine frame 23 in a sliding mode and in linkage fit with the driving shaft 26, a push block 30 arranged in the shell 21 in a sliding mode, and a connecting rod 31 arranged between the push plate 29 and the push block 30, wherein the push block 30 moves along with the connecting rod 31 and can drive alternating current contact to execute opening or closing actions. The energy storage operating mechanism adopts an energy storage type operating structure design, the energy storage spring group can play an energy storage role, the action of the push plate can be accelerated, the rotating shaft drives the first driving arm to act in the working process, the first driving arm drives the second driving arm to act through the driving shaft, the driving shaft compresses the energy storage spring component, the energy storage of the energy storage spring is realized, when the second driving arm and the driving shaft pass through dead points (midpoints), the energy storage spring releases energy, the driving shaft drives the push plate to rapidly slide, the push plate drives the push block to rapidly slide through the connecting rod, and the push blocks of the two groups of emergency starting mechanisms respectively push the closing buttons of the two alternating current contactors, so that the rapid opening or closing of the two alternating current contactors is realized, and the breaking capacity of a product can be effectively improved. The interlocking transmission mechanism 40 comprises two groups of gear sets 41 respectively arranged on the two energy storage operation mechanisms 22 and a transmission plate 42 arranged between the two gear sets 41, the gear sets 41 comprise gears 411 arranged on the rotating shaft 24 in a linkage manner and racks 412 meshed with the gears 411, and two ends of the transmission plate 42 are respectively connected to the racks 412 of the two groups of gears 41. The interlocking transmission mechanism adopts a gear rack structural design, and can play an interlocking role, so that two energy storage operation mechanisms can be ensured to simultaneously execute closing or opening actions, and the synchronism is better. The rotary shaft 24 is provided with an indicator 50, one end of the indicator 50 is sequentially provided with an indicator sleeve 51 and an operating handle sleeve 52 which are exposed out of the shell 21, and the shell 21 is provided with a brake opening indicator and a brake closing indicator which are matched with the indicator sleeve 52. The indicating sleeve on the indicating piece can carry out opening indication and closing indication on the working state of the energy storage operating mechanism, so that an operator can intuitively know the working state of the emergency starting alternating current contactor, and the safety is higher. The shell 21 is internally provided with a micro switch 43 matched with a rack 412, the shell 21 is provided with a connecting terminal 44 electrically connected with the micro switch 43, the rack 412 is provided with a groove 4121 for triggering the micro switch 43, the rack 412 acts along with the gear teeth 411 and can trigger the micro switch 43, and the micro switch 43 can be switched on or off. The micro-switch can monitor the working positions of the two emergency starting operation mechanisms, and the micro-switch can send the monitored signals to the background, so that the working state of the energy storage type emergency starting device is remotely monitored.
As shown in fig. 2 to 4, the energy storage spring assembly 28 includes a spring support 281 rotatably disposed on the positioning shaft 231 of the mechanism frame 23, and an energy storage spring 282 sleeved on the spring support 281, two ends of the energy storage spring 282 respectively abut against a driving shaft 231 and a limiting block 2811 of the spring support 281, a guiding chute 2812 matched with the driving shaft 26 is disposed on the spring support 281, and the driving shaft 26 moves along with the first driving arm 25 and can reciprocate in the guiding chute 2812. The drive shaft is arranged in the guide chute of the spring support in a sliding manner, so that the drive shaft can reliably compress the energy storage spring, and the energy storage spring can reliably store energy and release energy. When the driving device works, the first driving arm drives the driving shaft to compress the energy storage spring, the energy storage spring compresses and stores energy, when the first driving arm and the driving shaft pass through dead points (midpoints), the energy storage spring releases energy, the energy released by the energy storage spring can drive the driving shaft to quickly act, the driving shaft can drive the push plate and the push block to quickly act, and the push block pushes the button of the alternating current contactor, so that quick separation and quick combination of the alternating current contactor are realized. The first driving arm 25 is provided with a guiding sliding hole 251 corresponding to the driving shaft 26, and the driving shaft 26 is inserted into the guiding sliding hole 251. The driving shaft is arranged in the guide sliding hole of the first driving arm in a penetrating way, so that the first driving arm can reliably drive the driving shaft to act, and the working reliability of the emergency starting alternating current contactor is improved. The two ends of the mechanism frame 23 corresponding to the driving shaft 26 are respectively provided with an arc-shaped guide hole 232, and the two ends of the driving shaft 26 are arranged in the arc-shaped guide holes 232 in a penetrating manner and form sliding connection fit between the driving shaft 26 and the mechanism frame 23. The two ends of the driving shaft are respectively arranged in the arc-shaped guide holes of the machine frame in a sliding way, so that the driving shaft can reliably act, and the working reliability of the emergency starting alternating current contactor can be improved.
The two alternating-current contactors and the two emergency starting devices are assembled in a clamping and matching mode, the assembly efficiency is higher, and the two emergency starting devices are connected with the bottom plate through the supporting plate, so that the assembly of the alternating-current contactors is facilitated. The interlocking transmission mechanism can play a role in interlocking and transmission, so that the two energy storage operation mechanisms can execute closing or opening actions simultaneously, and the synchronism is better. And the energy storage operating mechanism adopts an energy storage type operating structure design, so that the purpose of quick opening and closing of the emergency starting alternating current contactor can be realized. Therefore, the emergency starting alternating current contactor has the advantages of simple structure, stable and reliable performance, convenience in assembly, small size and capability of effectively realizing quick separation and quick combination of the two contactors.
Claims (7)
1. An emergency starting alternating current contactor is characterized in that: including the bottom plate, set up two ac contactor on the bottom plate, set up two emergent starting drive on two ac contactor respectively, emergent starting drive include the casing, set up in the casing and be used for driving two energy storage operating device of two ac contactor divide-shut brake, two emergent starting drive between be provided with the interlocking drive mechanism that is used for controlling two energy storage operating device and synchronous execution divide-shut brake action, two emergent starting drive's casings on be provided with respectively with two ac contactor matched with joint groove, two ac contactor on be provided with respectively with joint groove matched with joint lug, the joint lug block in the joint inslot, and constitute two emergent starting drive and two ac contactor's joint cooperation, two emergent starting drive's casings and bottom plate between be provided with the backup pad, two emergent starting drive's casings between be provided with the fixed plate, the pivot on be provided with the indicator, the indicator on one end in proper order be provided with the indicator sleeve outside the casing, the operating sleeve on the casing, the indicator on be provided with the indicator of the indicator sleeve matched with the indicator of dividing brake.
2. The emergency start ac contactor according to claim 1, wherein: the energy storage operating mechanism comprises a machine framework, a rotating shaft arranged on the machine framework, a first driving arm in linkage fit with the rotating shaft, a driving shaft in linkage fit with the first driving arm, a second driving arm in linkage fit with the driving shaft, an energy storage spring assembly arranged between the driving shaft and the machine framework, a push plate arranged on the machine framework in sliding mode and in linkage fit with the driving shaft, a push block arranged in the shell in sliding mode, and a connecting rod arranged between the push plate and the push block, wherein the push block moves along with the connecting rod and can drive alternating current contact to execute opening or closing actions.
3. The emergency start ac contactor according to claim 2, wherein: the interlocking transmission mechanism comprises two groups of gear sets respectively arranged on the two energy storage operation mechanisms and a transmission plate arranged between the two gear sets, wherein the gear sets comprise gears arranged on a rotating shaft in a linkage manner and racks meshed with the gears, and two ends of the transmission plate are respectively connected to the racks of the two groups of gear sets.
4. Emergency start ac contactor according to claim 1 or 2, characterized in that: the shell in be provided with rack matched with micro-gap switch, be provided with the binding post who is connected with micro-gap switch electricity on the shell, the rack on be provided with the recess that is used for triggering micro-gap switch, the rack act and can trigger micro-gap switch along with the teeth of a cogwheel, and can realize micro-gap switch's switch-on or switch-off.
5. The emergency start ac contactor according to claim 2, wherein: the energy storage spring assembly comprises a spring support arranged on a positioning shaft of the machine frame in a rotating mode and an energy storage spring sleeved on the spring support, two ends of the energy storage spring are respectively abutted against a driving shaft and a limiting block of the spring support, a guide chute matched with the driving shaft is arranged on the spring support, and the driving shaft moves along with the first driving arm and can reciprocate in the guide chute.
6. The emergency start ac contactor according to claim 2, wherein: the first driving arm is provided with a guide sliding hole corresponding to the driving shaft, and the driving shaft is arranged in the guide sliding hole in a penetrating mode.
7. The emergency start ac contactor according to claim 2, wherein: the machine frame is provided with arc-shaped guide holes at two ends corresponding to the driving shaft respectively, and the two ends of the driving shaft are arranged in the arc-shaped guide holes in a penetrating manner and form sliding connection fit between the driving shaft and the machine frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321383847.3U CN220233043U (en) | 2023-06-01 | 2023-06-01 | Emergency starting alternating current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321383847.3U CN220233043U (en) | 2023-06-01 | 2023-06-01 | Emergency starting alternating current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220233043U true CN220233043U (en) | 2023-12-22 |
Family
ID=89174732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321383847.3U Active CN220233043U (en) | 2023-06-01 | 2023-06-01 | Emergency starting alternating current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220233043U (en) |
-
2023
- 2023-06-01 CN CN202321383847.3U patent/CN220233043U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220233043U (en) | Emergency starting alternating current contactor | |
| CN118156097A (en) | Miniature intelligent circuit breaker | |
| CN219370820U (en) | Electric operating structure of isolating switch and isolating switch | |
| CN219696351U (en) | Energy-storage type emergency starting device | |
| CN116741582A (en) | Energy-storage type emergency starting device | |
| CN219144071U (en) | Mechanical emergency starting device | |
| CN218498000U (en) | Emergency starting AC contactor | |
| CN207966901U (en) | A kind of electrical leakage tripping device of leakage circuit breakers | |
| CN108878185B (en) | Two-stage automatic change-over switch electric appliance | |
| CN221651409U (en) | Contactor capable of being started in emergency | |
| CN221747112U (en) | Starting device for manually operating starting contactor | |
| CN221747111U (en) | Alternating current contactor with manual operation starting function | |
| CN101840819B (en) | Frame-type circuit breaker with mechanical short-circuit self-locking function | |
| CN113327824A (en) | Residual current operated circuit breaker operating device and residual current operated circuit breaker | |
| CN113593944B (en) | Dual-power supply change-over switch | |
| CN115547758A (en) | Mechanical emergency starting device | |
| CN218299716U (en) | Transmission mechanism of mechanical emergency starting device | |
| CN218585903U (en) | Moving contact mechanism and direct-acting circuit breaker | |
| CN215266119U (en) | Circuit breaker | |
| CN218333670U (en) | Mechanical switch device of circuit breaker | |
| CN219144090U (en) | Magnetic action state display device of circuit breaker | |
| CN218299733U (en) | Operating mechanism of dual-power automatic transfer switch | |
| CN213093070U (en) | Action mechanism and switching device | |
| CN215266102U (en) | Contactor type fire-fighting machinery emergency pump starting device | |
| CN111739745B (en) | Switching device and switching device self-locking device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |