CN111508183B - Fire detector detects protection device - Google Patents
Fire detector detects protection device Download PDFInfo
- Publication number
- CN111508183B CN111508183B CN202010378438.9A CN202010378438A CN111508183B CN 111508183 B CN111508183 B CN 111508183B CN 202010378438 A CN202010378438 A CN 202010378438A CN 111508183 B CN111508183 B CN 111508183B
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- Prior art keywords
- fixedly connected
- wall
- fire
- detector
- shaft
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
Abstract
The invention discloses a fire detector detection protection device, which comprises a frame, wherein a working chamber is arranged in the frame, a top plate is fixedly connected to the frame, a wedge-shaped opening is arranged on the top plate, detection protection components for protecting and detecting the detector are arranged on the working chamber and the top plate, the detection protection components comprise threaded shafts rotatably connected with the inner wall of the top side of the frame, when the device works, the detector can be detected on the top plate moved by the detection protection components and protected by the detector when a fire occurs, the detector can be detected by a detection dust absorption component and air in the working chamber can be cleaned when the fire occurs, the fire can be extinguished by a fire extinguishing component when the fire occurs, a spray head can swing back and forth by a swing component to increase the fire extinguishing range, and the working efficiency is improved, the utilization rate of resources is increased.
Description
Technical Field
The invention relates to the related technical field of detectors, in particular to a fire detector detection protection device.
Background
The fire detector is a device for detecting the scene and finding out the fire in the fire-fighting automatic fire alarm system. Fire detectors are the "sense organs" of the system and function to monitor the environment for the presence or absence of a fire. Once there is fire, the characteristic physical quantity of fire, such as temperature, smoke, gas and radiation intensity, etc. are converted into electric signals, and act immediately to send alarm signals to the fire alarm controller. The fire detector is a fire detection device commonly used in buildings, elevators and vehicles, and in order to ensure the accuracy of fire detection, the detector needs to be maintained and overhauled regularly. After the existing fire detector is used for a long time, dust and smoke particles entering the detector can affect the detection effect, the detector cannot be effectively protected when a fire disaster happens, and the fire can not be extinguished in time, so that resources are wasted.
Disclosure of Invention
Aiming at the technical defects, the invention provides a fire detector detection protection device which can overcome the defects.
The invention relates to a fire detector detection protection device, which comprises a frame, wherein a working cavity is arranged in the frame, a top plate is fixedly connected to the frame, a wedge-shaped opening is formed in the top plate, a detection protection assembly for protecting a detector and detecting is arranged on the working cavity and the top plate, the detection protection assembly comprises a threaded shaft rotatably connected with the inner wall of the top side of the frame, the lower end of the threaded shaft is arranged on a moving motor fixedly connected with the inner wall of the bottom side of the working cavity, the threaded shaft is in threaded connection with a wedge-shaped plate, a magnetic base is fixedly connected to the wedge-shaped plate, the detector is fixedly arranged on the base, the threaded shaft is vertically and slidably connected with a protection shell, a secondary trapezoid-shaped block is fixedly connected to the rear side of the protection shell, a hydraulic cylinder is fixedly arranged on the inner wall of the, the utility model discloses a fire extinguishing device, including telescopic link, working chamber, fixed shaft, fixed gear, connecting rod, detection dust absorption assembly, telescopic link left end fixedly connected with electro-magnet, telescopic link rear side fixedly connected with main trapezoidal piece, the left side wall of frame is provided with the through-hole, be provided with the spout in the frame left wall body, sliding connection has the baffle that can plug up the through-hole about the spout, the fixed shaft that extends around the working chamber front side inner wall rotates to be connected with, fixed shaft fixedly connected with the fixed gear that the baffle meshing is connected, wedge lower extreme fixedly connected with the connecting rod that the fixed gear meshing is connected, the mobile motor right side is provided with the detection dust absorption assembly that detects and clear up the dust to the.
Preferably, the dust collection assembly comprises a dust collection box fixedly connected with the bottom inner wall of the working cavity, a fixed box is fixedly connected with the right inner wall of the working cavity, filter plates are fixedly connected with the upper inner wall and the lower inner wall of the fixed box, heating blocks are fixedly connected with the front inner wall and the rear inner wall of the fixed box, a rotating shaft is rotatably connected with the right inner wall of the fixed box, a fan blade is fixedly connected with the left end of the rotating shaft, a ventilation opening is formed in the left end of the fixed box, and the fixed box is communicated with the dust collection box to form a dust outlet.
Preferably, the fire extinguishing assembly comprises a fixing plate fixedly connected with the inner wall of the bottom side of the working cavity, the inner wall of the bottom side of the working cavity is fixedly connected with a gas storage box, the inner wall of the front side of the working cavity is fixedly connected with a ventilation box, the lower end of the ventilation box is provided with a gas inlet pipe communicated with the gas storage box and provided with a one-way valve, a push plate is connected in the ventilation box in a vertical sliding mode, the upper end of the push plate is fixedly connected with a push rod, the upper end of the push plate is fixedly connected with a reset spring fixedly connected with the ventilation box, the lower end of the top plate is rotatably connected with a connecting shaft rotatably connected with the gas storage box, the connecting shaft is fixedly connected with a mounting block, the left end of the mounting block is fixedly connected with.
Preferably, the swing assembly comprises a driving motor fixedly connected with the inner wall of the left side of the fixed plate, the lower end of the top plate is connected with a moving block moving left and right in a sliding way, the tail end of the driving motor is provided with a spline shaft extending left and right, the spline shaft is fixedly connected with a cam with the lower end connected with the push rod in a sliding way, the spline shaft is in spline fit with a spline sleeve rotationally connected with the moving block, the left end of the spline sleeve is fixedly connected with a turntable, the left end of the turntable is fixedly connected with a swinging block through a pin shaft, the lower end of the top plate can be connected with an annular disc in a front-back or left-right sliding way, the annular disc is rotationally connected with the swinging block, the annular disc front and back both sides fixedly connected with rack plate, join axle fixedly connected with the linking gear that rack plate meshing is connected, movable block right-hand member fixedly connected with is from the wedge.
Preferably, integral key shaft fixedly connected with main belt pulley, the frame bottom is provided with the transmission chamber, the side inner wall rotates about the transmission chamber and is connected with the transition axle, transition axle fixedly connected with the belt of main belt pulley rotates the slave band pulley of being connected, transition axle right-hand member fixedly connected with input band pulley, axis of rotation fixedly connected with the output band pulley that the input band pulley passes through the belt rotation and is connected.
The beneficial effects are that: the device during operation can make on the roof that the detector removed and protect the detector taking place the conflagration messenger through surveying the protection subassembly, can detect the detector and clean the intracavity air of working when the conflagration through detecting the dust absorption subassembly, can put out a fire through the subassembly that puts out a fire when making the conflagration take place, can make the shower nozzle swing back and forth increase the scope of putting out a fire through the swing subassembly, has improved work efficiency, has increased the utilization ratio of resource.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of a fire detector protection device according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1 according to an embodiment of the present invention;
FIG. 4 is a schematic view of C-C in FIG. 1 according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of D-D in FIG. 3 according to an embodiment of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The invention will now be described in detail with reference to fig. 1-5, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a fire detector detection protection device, which comprises a frame 11, wherein a working cavity 70 is arranged in the frame 11, a top plate 14 is fixedly connected to the frame 11, a wedge-shaped opening 21 is arranged on the top plate 14, detection protection components for protecting a detector and detecting are arranged on the working cavity 70 and the top plate 14, the detection protection components comprise a threaded shaft 16 rotatably connected with the inner wall of the top side of the frame 11, the lower end of the threaded shaft 16 is arranged on a moving motor 34 fixedly connected with the inner wall of the bottom side of the working cavity 70, the threaded shaft 16 is in threaded connection with a wedge-shaped plate 50, a magnetic base 51 is fixedly connected to the wedge-shaped plate 50, a detector 52 is fixedly installed on the base 51, a protective shell 15 is vertically and slidably connected to the threaded shaft 16, and a secondary trapezoidal block 68 is fixedly connected to the rear side of the protective shell 15, a hydraulic cylinder 20 is fixedly installed on the inner wall of the right side of the frame 11, an expansion link 19 is arranged at the tail end of the hydraulic cylinder 20, an electromagnet 18 is fixedly connected to the left end of the expansion link 19, a main trapezoidal block 17 is fixedly connected to the rear side of the expansion link 19, a through hole 64 is formed in the left side wall of the frame 11, a sliding chute 66 is arranged in the left wall of the frame 11, a baffle 65 capable of blocking the through hole 64 is connected to the sliding chute 66 in a vertical sliding manner, a fixing shaft 53 extending forwards and backwards is rotatably connected to the inner wall of the front side of the working cavity 70, a fixing gear 54 meshed with the baffle 65 is fixedly connected to the fixing shaft 53, a connecting rod 49 meshed with the fixing gear 54 is fixedly connected to the lower end of the wedged plate 50, a detection dust collection assembly for detecting detectors and cleaning dust is arranged on the right, a swing assembly for swinging the spray head is arranged below the top plate 14.
Advantageously, the dust collection and detection assembly comprises a dust collection box 35 fixedly connected with the inner wall of the bottom side of the working chamber 70, a fixed box 27 is fixedly connected with the inner wall of the right side of the working chamber 70, filter plates 26 are fixedly connected with the inner walls of the upper side and the lower side of the fixed box 27, a heating block 22 is fixedly connected with the inner walls of the front side and the rear side of the fixed box 27, a rotating shaft 23 is rotatably connected with the inner wall of the right side of the fixed box 27, a fan blade 25 is fixedly connected with the left end of the rotating shaft 23, a ventilation opening 36 is arranged at the left end of the fixed box 27, a dust outlet pipe 37 is arranged in the fixed box 27 and the dust collection box 35 in a communicating mode, so that the detector 52 is detected through the forward rotation of the fan blade 25 and the heating block.
Advantageously, the fire extinguishing assembly comprises a fixing plate 39 fixedly connected with the inner wall of the bottom side of the working chamber 70, the inner wall of the bottom side of the working chamber 70 is fixedly connected with an air storage tank 12, the inner wall of the front side of the working chamber 70 is fixedly connected with an air exchange tank 44, the lower end of the air exchange tank 44 is provided with an air inlet pipe 48 which is communicated with the air storage tank 12 and is provided with a one-way valve, a push plate 71 is slidably connected with the air exchange tank 44 up and down, the upper end of the push plate 71 is fixedly connected with a push rod 45, the upper end of the push plate 45 is fixedly connected with a return spring 46 fixedly connected with the air exchange tank 44, the lower end of the top plate 14 is rotatably connected with a connecting shaft 60 which is rotatably connected with the air storage tank 12, the connecting shaft is fixedly connected with a mounting block 62, the left end of, so that the carbon dioxide in the gas tank 12 passes through the nozzle 63 to extinguish a fire by the vertical movement of the push plate 71.
Advantageously, the swing assembly comprises a driving motor 41 fixedly connected with the inner wall of the left side of the fixed plate 39, the lower end of the top plate 14 is connected with a moving block 56 which moves left and right in a left-right sliding manner, the end of the driving motor 41 is provided with a spline shaft 42 which extends left and right, the spline shaft 42 is fixedly connected with a cam 99 of which the lower end is connected with the push rod 45 in a sliding manner, the spline shaft 42 is in spline fit with a spline sleeve 55 which is connected with the moving block 56 in a rotating manner, the left end of the spline sleeve 55 is fixedly connected with a rotary disc 57, the left end of the rotary disc 57 is fixedly connected with a swing block 59 through a pin shaft, the lower end of the top plate 14 is connected with an annular disc 58 in a front-back or left-right sliding manner, the annular disc 58 is connected with the swing block 59 in a rotating manner, rack, the right end of the moving block 56 is fixedly connected with a slave wedge block 69, so that the annular disc 58 is driven to move back and forth through the rotation of the rotary disc 57, and the spray head 63 is driven to swing left and right through the rack plate 67, so that the fire extinguishing range is enlarged.
Advantageously, the spline shaft 42 is fixedly connected with a main belt pulley 43, the bottom of the frame 11 is provided with a transmission cavity 32, the inner walls of the left and right sides of the transmission cavity 32 are rotatably connected with a transition shaft 33, the transition shaft 33 is fixedly connected with a secondary belt pulley 31 rotatably connected with the belt of the main belt pulley 43, the right end of the transition shaft 33 is fixedly connected with an input belt pulley 38, and the rotating shaft 23 is fixedly connected with an output belt pulley 24 rotatably connected with the input belt pulley 38 through the belt.
In the initial state, the driving motor 41 and the moving motor 34 are not started, the return spring 46 is in the stretching state, the lower end of the protective shell 15 is in contact with the top plate 14, the wedge plate 50 is positioned at the left side of the fixed box, and the baffle 65 is in the closing state.
When the detector works, the detector 52 is placed on the base 51, the driving motor 41 is started to rotate in the positive direction, the driven belt wheel 31 is driven to rotate by the main belt wheel 43, the output belt wheel 24 is driven to rotate by the input belt wheel 38, the blown hot air is driven to detect the detector by the fan blades 25 rotating in the positive direction and the heating block 22, after the detector can work normally, the moving motor 34 is started, the wedge-shaped plate 50 is driven to move upwards by the threaded shaft 16, the wedge-shaped plate 50 is enabled to coincide with the wedge-shaped opening 21, meanwhile, the fixed gear 54 is driven to rotate by the connecting rod 49, the baffle 65 is driven to move downwards, the through hole 64 is enabled to be opened, meanwhile, the driven auxiliary wedge-shaped block 69 is driven to move leftwards by the wedge-shaped plate 50, the rack plate 67 is driven to be meshed with the engaging gear 61 by the moving block 56, the hydraulic cylinder 20 is started, the, so that the protective shell 15 moves upwards, and at the same time, the electromagnet 18 drives the detector 52 to move leftwards to the upper left side of the top plate 14 for detection; when a fire breaks out, the hydraulic cylinder 20 drives the telescopic rod 19 to be shortened, so that the electromagnet 18 drives the detector 52 to move rightwards and the protective shell 15 falls down to protect the detector, the driving motor 41 is started to rotate reversely, so that the push plate 71 moves upwards and downwards through the cam 99 and the return spring 46, so that carbon dioxide of the gas storage box 12 is extinguished through the spray head 63, meanwhile, the swing block 59 is driven by the rotary disc 57 to swing in the annular disc 58, so that the rack plate 67 is driven to move forwards and backwards, so that the spray head 63 swings forwards and backwards through the engaging gear 61 to enlarge the extinguishing range, meanwhile, the fan blades 25 are driven to rotate reversely, so that air in the working cavity 70 is cleaned, and dust falls into the.
The beneficial effects are that: the device during operation can make on the roof that the detector removed and protect the detector taking place the conflagration messenger through surveying the protection subassembly, can detect the detector and clean the intracavity air of working when the conflagration through detecting the dust absorption subassembly, can put out a fire through the subassembly that puts out a fire when making the conflagration take place, can make the shower nozzle swing back and forth increase the scope of putting out a fire through the swing subassembly, has improved work efficiency, has increased the utilization ratio of resource.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (5)
1. The utility model provides a fire detector detects protection device, includes the frame, be provided with the working chamber in the frame, its characterized in that: the detection protection component comprises a threaded shaft which is rotatably connected with the inner wall of the top side of the rack, the lower end of the threaded shaft is arranged on a moving motor which is fixedly connected with the inner wall of the bottom side of the working cavity, the threaded shaft is in threaded connection with a wedge plate, a magnetic base is fixedly connected onto the wedge plate, the detector is fixedly mounted on the base, the threaded shaft is vertically and slidably connected with a protection shell, a secondary trapezoidal block is fixedly connected to the rear side of the protection shell, a hydraulic cylinder is fixedly mounted on the inner wall of the right side of the rack, a telescopic rod is arranged at the tail end of the hydraulic cylinder, an electromagnet is fixedly connected to the left end of the telescopic rod, and a main trapezoidal block is fixedly connected to the rear side of the telescopic rod, the left side wall of frame is provided with the through-hole, be provided with the spout in the frame left side wall body, sliding connection has can plug up about the spout the baffle of through-hole, the fixed axle that extends around the working chamber front side inner wall rotates to be connected with, fixed axle fixedly connected with the fixed gear that the baffle meshing is connected, wedge lower extreme fixedly connected with the connecting rod that the fixed gear meshing is connected, the mobile motor right side is provided with detects the detection dust absorption subassembly with the clearance dust to the detector, the mobile motor left side is provided with the subassembly of putting out a fire that puts out a fire when being used for the conflagration, the roof below is provided with and is used for making the wobbling swing subassembly.
2. A fire detector detection protection device as claimed in claim 1, wherein: the dust collection detection assembly comprises a dust collection box fixedly connected with the bottom inner wall of the working cavity, a fixed box fixedly connected with the right inner wall of the working cavity, filter plates fixedly connected with the upper inner wall and the lower inner wall of the fixed box, heating blocks fixedly connected with the front inner wall and the rear inner wall of the fixed box, a rotating shaft rotatably connected with the right inner wall of the fixed box, a fan blade fixedly connected with the left end of the rotating shaft, a ventilation opening arranged at the left end of the fixed box, and a dust outlet pipe arranged on the fixed box and the dust collection box in a communicated manner.
3. A fire detector detection protection device according to claim 2, wherein: the fire extinguishing assembly comprises a fixing plate fixedly connected with the bottom inner wall of the working cavity, a gas storage tank is fixedly connected with the bottom inner wall of the working cavity, a ventilation box is fixedly connected with the front inner wall of the working cavity, the lower end of the ventilation box is provided with a gas inlet pipe communicated with the gas storage tank and provided with a one-way valve, a push plate is slidably connected in the ventilation box up and down, a push rod is fixedly connected to the upper end of the push plate, a reset spring is fixedly connected to the upper end of the push plate, the lower end of the push plate is rotatably connected with a connecting shaft rotatably connected to the gas storage tank, a mounting block is fixedly connected to the connecting shaft, a spray nozzle is fixedly connected to the left end of the mounting block, and a gas outlet pipe fixedly mounted with the spray nozzle.
4. A fire detector detection protection device according to claim 3, wherein: swing subassembly include with fixed plate left side inner wall fixed connection's driving motor, roof lower extreme horizontal sliding connection has the movable block that removes, the integral key shaft that extends about driving motor end is provided with, integral key shaft fixedly connected with lower extreme with push rod sliding connection's cam, integral key shaft spline fit have with the movable block rotates the spline sleeve of connecting, spline sleeve left end fixedly connected with carousel, the carousel left end is through round pin axle fixedly connected with pendulum piece, roof lower extreme can be around or horizontal sliding connection have the annular disc, the annular disc with the pendulum piece rotates the connection, both sides fixedly connected with rack plate around the annular disc, join axle fixedly connected with the linking gear that rack plate meshing is connected, movable block fixed connection is from the wedge.
5. A fire detector detection protection device according to claim 4, characterized in that: spline shaft fixedly connected with main belt pulley, the frame bottom is provided with the transmission chamber, the side inner wall rotates about the transmission chamber and is connected with the transition axle, transition axle fixedly connected with the belt of main belt pulley rotates the slave band pulley of being connected, transition axle right-hand member fixedly connected with input band pulley, axis of rotation fixedly connected with the output band pulley that the input band pulley passes through the belt rotation and is connected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010378438.9A CN111508183B (en) | 2020-05-07 | 2020-05-07 | Fire detector detects protection device |
| GBGB2014816.9A GB202014816D0 (en) | 2020-05-07 | 2020-09-21 | Fire detector detection and protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010378438.9A CN111508183B (en) | 2020-05-07 | 2020-05-07 | Fire detector detects protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111508183A CN111508183A (en) | 2020-08-07 |
| CN111508183B true CN111508183B (en) | 2021-01-01 |
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ID=71878501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010378438.9A Active CN111508183B (en) | 2020-05-07 | 2020-05-07 | Fire detector detects protection device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111508183B (en) |
| GB (1) | GB202014816D0 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112134393A (en) * | 2020-10-13 | 2020-12-25 | 温州硕出电子科技有限公司 | Low-loss fireproof motor |
| CN113436405B (en) * | 2021-07-13 | 2023-03-28 | 深圳市创景科技发展有限公司 | Fire alarm and fire extinguishing device |
| CN115317835B (en) * | 2022-07-18 | 2023-05-23 | 深圳昱泽新能源有限公司 | Fire prevention and control device of lithium ion battery energy storage system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3246299B2 (en) * | 1995-11-22 | 2002-01-15 | 松下電工株式会社 | Sensor cover |
| JP6741546B2 (en) * | 2016-10-11 | 2020-08-19 | ニッタン株式会社 | Dustproof cover for sensor |
| CN206833643U (en) * | 2017-04-10 | 2018-01-02 | 广东珠江燃气集团有限公司 | A kind of special protector of structural fire protection heat detector |
| CN108686329B (en) * | 2017-04-10 | 2020-11-06 | 广东珠江燃气集团股份有限公司 | Electronic detector protection device for building fire-fighting equipment |
| CN109238183B (en) * | 2018-07-11 | 2020-06-30 | 广州能源检测研究院 | Check out test set with protect function |
| CN109331381A (en) * | 2018-09-21 | 2019-02-15 | 江苏微能电子科技有限公司 | Smog alarm extinguishing device with fixed point spray function |
-
2020
- 2020-05-07 CN CN202010378438.9A patent/CN111508183B/en active Active
- 2020-09-21 GB GBGB2014816.9A patent/GB202014816D0/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| GB202014816D0 (en) | 2020-11-04 |
| CN111508183A (en) | 2020-08-07 |
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Effective date of registration: 20201211 Address after: No.15, Dongxing Road, industrial zone, Songjiang District, Shanghai, 201600 Applicant after: ZENNER METERS (SHANGHAI) Ltd. Address before: No.61 shuanghai Road, Haikou Town, Qingtian County, Lishui City, Zhejiang Province Applicant before: Qingtian tanzheng Measuring Instrument Co.,Ltd. |
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