TWM451456U - Valve control safety device - Google Patents
Valve control safety device Download PDFInfo
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- TWM451456U TWM451456U TW101222365U TW101222365U TWM451456U TW M451456 U TWM451456 U TW M451456U TW 101222365 U TW101222365 U TW 101222365U TW 101222365 U TW101222365 U TW 101222365U TW M451456 U TWM451456 U TW M451456U
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Description
本創作涉及一種水閥的技術領域，特別是有關於一種閥控安全裝置。The present invention relates to the technical field of water valves, and in particular to a valve control safety device.
周知，一齊開放閥是用於開放式之灑水、水霧以及泡沫系統中之控制節點。當有火警狀況發生時，啟動電磁閥或感知灑水頭或可用手動方式，打開一齊開放閥所控制之區域中數個裝置集中滅火，達到更佳之滅火效果，並可配合警報逆止閥發出報警訊號以及電訊號可以更詳細了解火災區域，予以搶救或疏散。It is well known that open valves are used for open sprinklers, water mists, and control nodes in foam systems. When there is a fire alarm condition, start the solenoid valve or sense the sprinkler head or use manual mode to open several fire extinguishing effects in several areas controlled by the open valve to achieve better fire extinguishing effect, and can send alarm signal with the alarm check valve. And the electric signal can learn more about the fire area and rescue or evacuate it.
一齊開放閥包含有減壓閥及增壓閥，其中，減壓閥的配置方式如圖1所示，將減壓閥20與一消防管路40相連接，並透過設置在減壓閥20內之減壓閥塞來阻擋消防管路40的水通過，而減壓閥塞是滑設於一減壓室，減壓室與一感知管路10相連通，感知管路10再連接複數感知灑水頭50，當發生火災時，因高溫而使得感知灑水頭50啟動灑水功能，導致感知管路10內因水由感知灑水頭50端流出，而造成感知管路10內的水壓降低，連帶讓與感知管路10相連通之減壓室內的水壓跟著降低，導致減壓閥內用來阻擋消防管路40之水通過之減壓閥塞被消防管路的水壓推離原來位置，使得消防管路40的水能流向需要使用水的消防設備，例如：灑水頭60；此外，減壓閥20內設置有一減壓閥塞彈簧，當減壓室內的水壓恢復正常時，減壓閥塞會受到減壓閥塞彈簧的驅動而重新封閉減壓閥20，使得水無法 通過減壓閥20流出。惟，減壓閥20有時會因為與其相連通的感知管路10產生破損的狀況，因而導致感知管路10內的水壓產生壓降現象，進而使得減壓閥20產生誤動作，因此，如何避免讓減壓閥20會因感知管路10的破損而產生壓降現象，進而導致減壓閥20的誤動作，便成為一項有待改善的課題。The open valve includes a pressure reducing valve and a pressure increasing valve. The pressure reducing valve is arranged as shown in FIG. 1 , and the pressure reducing valve 20 is connected to a fire fighting line 40 and is disposed in the pressure reducing valve 20 . The pressure reducing valve plug blocks the passage of water of the fire protection line 40, and the pressure reducing valve plug is slidably disposed in a decompression chamber, the decompression chamber is in communication with a sensing line 10, and the sensing line 10 is connected to the plurality of sensing sprinkles. The water head 50, when a fire occurs, causes the watering head 50 to activate the watering function due to the high temperature, so that the water in the sensing pipeline 10 flows out from the end of the sensing sprinkler 50, thereby causing the water pressure in the sensing pipeline 10 to decrease. The water pressure in the decompression chamber communicating with the sensing line 10 is decreased, so that the pressure reducing valve plug for blocking the water passing through the fire protection line 40 in the pressure reducing valve is pushed away from the original position by the water pressure of the fire fighting line, so that The water of the fire-fighting pipeline 40 can flow to the fire-fighting equipment that needs to use water, for example, the sprinkler head 60; in addition, the pressure-reducing valve 20 is provided with a pressure-reducing valve plug spring, and when the water pressure in the pressure-reduction chamber returns to normal, the pressure reducing valve The plug is re-closed to the pressure reducing valve 20 by the pressure relief valve spring. Water can not get It flows out through the pressure reducing valve 20. However, the pressure reducing valve 20 sometimes causes a broken state due to the sensing line 10 communicating therewith, thereby causing a pressure drop in the water pressure in the sensing line 10, which in turn causes the pressure reducing valve 20 to malfunction. It is an object to be improved to prevent the pressure reducing valve 20 from causing a pressure drop due to the damage of the sensing line 10, thereby causing malfunction of the pressure reducing valve 20.
有鑑於此，本創作提供一種閥控安全裝置，以解決減壓閥會因感知管路的破損而產生壓降現象，進而導致減壓閥誤動作的問題，其技術手段包括：一感知管路，其兩端分別形成一入水端及一出水端，該感知管路一側分別延伸形成有鄰近該入水端的一第一歧管及鄰近該出水端的一第二歧管；一減壓閥，連接一消防管路，並透過一減壓閥塞控制該消防管路的開啟與關閉，該減壓閥塞滑設於該減壓閥內的一減壓室中，該減壓室與該第一歧管相連通；以及一增壓閥，其內部的一水流通道與該出水端相連通，並透過一增壓閥塞控制該水流通道的開啟與關閉，該增壓閥塞滑設於該增壓閥的一增壓室中，該增壓室與該第二歧管相連通，該第二歧管上設置有一開關，該開關控制該第二歧管的開啟與關閉。In view of this, the present invention provides a valve-controlled safety device to solve the problem that the pressure reducing valve may cause a pressure drop due to the damage of the sensing pipeline, thereby causing the malfunction of the pressure reducing valve, and the technical means thereof include: a sensing pipeline, A water inlet end and a water outlet end are respectively formed on the two ends, and a first manifold adjacent to the water inlet end and a second manifold adjacent to the water outlet end are respectively formed on one side of the sensing pipeline; a pressure reducing valve is connected to the first manifold; a fire-fighting pipeline, and controlling the opening and closing of the fire-fighting pipeline through a pressure-reducing valve plug, wherein the pressure-reducing valve plug is slidably disposed in a decompression chamber in the pressure reducing valve, the decompression chamber and the first difference a tube is connected; and a pressure increasing valve, wherein a water flow passage communicates with the water outlet end, and controls opening and closing of the water flow passage through a booster valve plug, wherein the pressure boosting valve plug is slidably set in the boosting In a plenum of the valve, the plenum is in communication with the second manifold, and the second manifold is provided with a switch that controls opening and closing of the second manifold.
在具體實施上：該開關是手動閥或電動閥的其中之一In specific implementation: the switch is one of a manual valve or an electric valve
該減壓閥塞透過一減壓閥塞彈簧封閉該消防管路。The pressure relief valve plug closes the fire line through a pressure relief plug spring.
該增壓閥塞透過一增壓閥塞彈簧封閉該水流通道。The boost valve plug closes the water flow passage through a boost valve plug spring.
基於上述技術手段，本創作之功效在於：在感知管路上鄰近減壓閥的位置，設置一增壓閥，透過增壓閥來控制感知管路內水的流動，防止減壓閥會因感知管路的破損而形成壓降現象，進而導致減壓閥的誤動作。Based on the above technical means, the effect of the creation is that a pressure increasing valve is arranged on the sensing pipeline adjacent to the pressure reducing valve, and the pressure regulating valve is used to control the flow of water in the pipeline, thereby preventing the pressure reducing valve from being affected by the sensing tube. The road is broken to form a pressure drop phenomenon, which in turn causes malfunction of the pressure reducing valve.
以上內容與後續的實施方式及圖式簡單說明，皆是為了能夠進一步說明本創作為解決問題所採取的技術手段及其所能產生之功效。而有關本創作可供據以實施的相關細節，也將在後續的詳細說明及圖式中加以闡述。The above content and the subsequent embodiments and the drawings are briefly described in order to further explain the technical means and the effects that can be produced by the present invention to solve the problem. The relevant details about the implementation of this creation will also be explained in the detailed description and drawings.
首先，為了詳細說明本創作一較佳實施例，請合併參閱圖2及圖3。其中，圖2揭示出本創作實施例的配置示意圖；圖3揭示出本創作實施例的構造剖示圖。上述圖式說明本創作提供一種閥控安全裝置，包括一感知管路10、一減壓閥20及一增壓閥30。其中：感知管路10是使用金屬或塑膠製成之一圓形管體，其兩端分別形成一入水端11及一出水端12，且感知管路10一側分別延伸形成有鄰近入水端11的一第一歧管13及鄰近出水端12的一第二歧管14，使得通過入水端11流入感知管路10內的水分別經由第一歧管13、第二歧管14及出水端12流出。First, in order to explain in detail a preferred embodiment of the present invention, please refer to FIG. 2 and FIG. 2 is a schematic view showing the configuration of the present embodiment; FIG. 3 is a cross-sectional view showing the configuration of the present embodiment. The above description provides a valve-controlled safety device comprising a sensing line 10, a pressure reducing valve 20 and a pressure increasing valve 30. The sensing pipeline 10 is a circular tubular body made of metal or plastic, and a water inlet end 11 and a water outlet end 12 are respectively formed at two ends thereof, and the sensing pipeline 10 side is respectively extended to form an adjacent water inlet end 11 . a first manifold 13 and a second manifold 14 adjacent to the water outlet 12 such that water flowing into the sensing conduit 10 through the water inlet end 11 passes through the first manifold 13, the second manifold 14, and the water outlet 12, respectively. Flow out.
減壓閥20是由金屬模製成型，其兩端分別形成有相互連通的一入水口21及一出水口22，而入水口21及出水口22分別與一消防管路40相連接，且入水口21及出水口22之間形成有一容室23，消防管路40內的水是經由入水口21通過容室23，然後由出水口22流出，容室23內形成有 一閥口231，水在經由入水口21流向出水口22的過程中會通過閥口231，並透過一減壓閥塞24來控制閥口231的開啟與關閉，而減壓閥塞24是滑設於減壓閥20內的一減壓室25中，減壓室25與第一歧管13相連通，感知管路10內的水是通過第一歧管13流入減壓室25中，並且減壓閥塞24是透過設置於減壓室25內之一減壓閥塞彈簧26的簧壓來封閉閥口231。The pressure reducing valve 20 is made of a metal mold, and a water inlet 21 and a water outlet 22 which are connected to each other are respectively formed at the two ends, and the water inlet 21 and the water outlet 22 are respectively connected to a fire protection line 40, and A chamber 23 is formed between the water inlet 21 and the water outlet 22. The water in the fire protection line 40 passes through the inlet chamber 23 through the water inlet 21, and then flows out through the water outlet 22, and the chamber 23 is formed therein. A valve port 231, water flowing through the water inlet 21 to the water outlet 22 through the valve port 231, and through a pressure reducing valve plug 24 to control the opening and closing of the valve port 231, and the pressure reducing valve plug 24 is slippery Provided in a decompression chamber 25 in the pressure reducing valve 20, the decompression chamber 25 communicates with the first manifold 13, and the water in the sensing line 10 flows into the decompression chamber 25 through the first manifold 13, and The pressure reducing valve plug 24 closes the valve port 231 through a spring pressure of a pressure reducing valve plug spring 26 provided in the pressure reducing chamber 25.
增壓閥30是由金屬模製成型，其兩端分別形成有相互連通的一入水口31及一出水口32，且入水口31與感知管路10的出水端12相連接，且入水口31及出水口32之間形成有一水流通道33，感知管路10內的水是經由入水口31通過水流通道33，然後由出水口32流出，且水流通道33內形成有一閥口331，水在經由入水口31流向出水口32的過程中會通過閥口331，並透過一增壓閥塞34來控制閥口331的開啟與關閉，而增壓閥塞34是透過一活塞桿38連接於一增壓室35內的活塞37上，增壓室35與第二歧管14相連通，並且在第二歧管14上設置一開關15，該開關15用以控制流入第二歧管14的水能否流向增壓室35，且增壓閥塞34是透過一增壓閥塞彈簧36的簧壓來封閉閥口331。The pressure increasing valve 30 is made of a metal mold, and two water inlets 31 and a water outlet 32 are connected to each other at both ends, and the water inlet 31 is connected to the water outlet end 12 of the sensing pipeline 10, and the water inlet is connected. A water flow passage 33 is formed between the 31 and the water outlet 32. The water in the sensing pipeline 10 passes through the water inlet passage 33 through the water inlet passage 33, and then flows out through the water outlet 32, and a valve port 331 is formed in the water flow passage 33. During the process of flowing through the water inlet 31 to the water outlet 32, the valve port 331 is passed through, and the opening and closing of the valve port 331 is controlled by a pressure increasing valve plug 34, and the pressure regulating valve plug 34 is connected to the piston rod 38 through a piston rod 38. On the piston 37 in the plenum chamber 35, the plenum chamber 35 is in communication with the second manifold 14, and a switch 15 is provided on the second manifold 14, the switch 15 for controlling the water flowing into the second manifold 14. Whether it can flow to the plenum chamber 35, and the boost valve plug 34 closes the valve port 331 by the spring pressure of a booster plug spring 36.
更進一步的說，在第二歧管14上用以控制水流能否流向增壓室35的開關15可以是手動閥或電動閥，藉此使用者能以手控或電控的方式來啟動增壓閥30。Furthermore, the switch 15 on the second manifold 14 for controlling whether the water flow can flow to the plenum 35 can be a manual valve or an electric valve, whereby the user can initiate the increase by manual or electronic control. Pressure valve 30.
透過上述構件之組成，當第二歧管14上的開關15為關閉狀態時(如圖4所示)，導致感知管路10內的水無法 透過第二歧管14流入增壓室35內，使得感知管路10內的水受到增壓閥塞34的阻擋無法通過增壓閥30，造成感知管路10內的水壓維持在穩定狀態，連帶使得透過第一歧管13與感知管路10相連通之減壓室25內的水壓維持在穩定狀態，導致消防管路40內的水受到減壓閥塞24的阻擋無法通過減壓閥20。接著，當第二歧管14上的開關15為開啟狀態時(如圖5所示)，使得感知管路10內的水透過第二歧管14流入增壓室35內，藉由流入增壓室35內的水所產生的水壓推動活塞37，連帶使得活塞桿38跟著位移，當活塞桿38位移時，增壓閥塞34會被活塞桿38推離閥口331(如圖6所示)，使得原來感知管路10內受到增壓閥塞34阻擋而無法通過增壓閥30的水得以通過，並流向設置於感知管路10上的複數感知灑水頭50。然後，當發生火災時，感知灑水頭50因高溫而啟動灑水功能，使得感知管路10內因水由感知灑水頭50端流出，而造成感知管路10內的水壓降低，連帶讓與感知管路相連通之減壓室25內的水壓跟著降低，導致減壓閥20內用來阻擋消防管路40內的水通過之減壓閥塞24被消防管路40的水壓推離原來位置(如圖7所示)，使得消防管路40內的水能流向設置於消防管路40上的複數灑水頭60，透過灑水頭60向火場灑水，來達到滅火的效果。當火災的狀況解除時，使用者將第二歧管14上的開關15關閉，使得原來受到增壓室35內之水壓推離閥口331的增壓閥塞34，因增壓室35內之水不再提供足夠的壓力，及受到增壓閥塞彈簧36的簧壓，因此增壓閥塞34重新封閉閥口331，當感知管路10內的水無法再經由增壓閥30流出時，感知管路10內的水壓就會恢復正常， 而減壓閥塞24受到減壓室25內之減壓閥塞彈簧26的簧壓推動，來重新封閉閥口231，使得消防管路40內的水無法通過減壓閥20流出，即可關閉灑水頭60。Through the composition of the above components, when the switch 15 on the second manifold 14 is in the closed state (as shown in FIG. 4), the water in the sensing pipeline 10 cannot be sensed. The second manifold 14 flows into the plenum chamber 35, so that the water in the sensing line 10 is blocked by the booster valve plug 34 and cannot pass through the pressure increasing valve 30, so that the water pressure in the sensing line 10 is maintained in a stable state. The water pressure in the decompression chamber 25 communicating with the sensing line 10 through the first manifold 13 is maintained in a stable state, so that the water in the fire protection line 40 is blocked by the pressure reducing valve plug 24 and cannot pass through the pressure reducing valve. 20. Then, when the switch 15 on the second manifold 14 is in an open state (as shown in FIG. 5), the water in the sensing pipeline 10 flows into the plenum chamber 35 through the second manifold 14 by flowing in the boosting chamber. The water pressure generated by the water in the chamber 35 pushes the piston 37, which causes the piston rod 38 to follow, and when the piston rod 38 is displaced, the pressure plug 34 is pushed away from the valve port 331 by the piston rod 38 (as shown in FIG. 6). The original sensing line 10 is blocked by the pressurized valve plug 34 and cannot pass through the water of the pressure increasing valve 30, and flows to the plurality of sensing sprinklers 50 disposed on the sensing line 10. Then, when a fire occurs, the sensing sprinkler 50 activates the watering function due to the high temperature, so that the water in the sensing pipeline 10 flows out from the end of the sensing sprinkler 50, causing the water pressure in the sensing pipeline 10 to decrease, and the sensing and sensing The water pressure in the decompression chamber 25 in which the pipeline is connected is lowered, and the pressure relief valve plug 24 in the pressure reducing valve 20 for blocking the passage of water in the fire protection pipeline 40 is pushed away from the original water pressure of the fire pipeline 40. The position (as shown in Fig. 7) allows water in the fire line 40 to flow to the plurality of sprinkler heads 60 disposed on the fire line 40, and sprinkles water through the sprinkler head 60 to achieve the effect of extinguishing the fire. When the fire condition is released, the user closes the switch 15 on the second manifold 14 so that the water pressure in the pumping chamber 35 is pushed away from the pressure port plug 34 of the valve port 331 due to the inside of the pump chamber 35. The water no longer provides sufficient pressure and is spring-loaded by the booster plug spring 36, so the boost valve plug 34 recloses the valve port 331 when the water in the sense line 10 is no longer able to flow out through the boost valve 30. , the water pressure in the sensing pipeline 10 will return to normal. The pressure reducing valve plug 24 is pushed by the spring pressure of the pressure reducing valve spring 26 in the decompression chamber 25 to reclose the valve port 231, so that the water in the fire protection line 40 cannot flow out through the pressure reducing valve 20, and can be closed. Sprinkle head 60.
根據上述技術手段，本創作的效能在於：在與減壓閥20相連街的感知管路10上設置增壓閥30，透過增壓閥30來控制感知管路10內水的流動，可避免減壓閥20會受到感知管路10因破損形成壓降而發生誤動作的情形。According to the above technical means, the performance of the present invention is that a pressure increasing valve 30 is provided on the sensing line 10 connected to the pressure reducing valve 20, and the flow of water in the sensing line 10 is controlled by the pressure increasing valve 30 to avoid the reduction. The pressure valve 20 is subjected to a malfunction by the pressure drop of the sense line 10 due to breakage.
綜上所陳，僅為本創作之較佳實施例而已，並非用以限定本創作；凡其他未脫離本創作所揭示之精神下而完成的等效修飾或置換，均應包含於後述申請專利範圍內。In summary, it is only a preferred embodiment of the present invention, and is not intended to limit the present invention; any equivalent modification or replacement that is not done in the spirit of the present disclosure should be included in the patent application described later. Within the scope.
10‧‧‧感知管路10‧‧‧Sense pipeline
11‧‧‧入水端11‧‧‧ into the water
12‧‧‧出水端12‧‧‧ water outlet
13‧‧‧第一歧管13‧‧‧First Manifold
14‧‧‧第二歧管14‧‧‧Second manifold
20‧‧‧減壓閥20‧‧‧Reducing valve
21‧‧‧入水口21‧‧‧ water inlet
22‧‧‧出水口22‧‧‧Water outlet
23‧‧‧容室23‧‧‧ Room
231‧‧‧閥口231‧‧‧ valve port
24‧‧‧減壓閥塞24‧‧‧Relief valve plug
25‧‧‧減壓室25‧‧‧Decompression room
26‧‧‧減壓閥塞彈簧26‧‧‧Relief valve plug spring
30‧‧‧增壓閥30‧‧‧Hydraulic valve
31‧‧‧入水口31‧‧‧ water inlet
32‧‧‧出水口32‧‧‧Water outlet
33‧‧‧水流通道33‧‧‧Water flow channel
331‧‧‧閥口331‧‧‧ valve port
34‧‧‧增壓閥塞34‧‧‧Pressed plug
35‧‧‧增壓室35‧‧‧ plenum
36‧‧‧增壓閥塞彈簧36‧‧‧Pressed plug spring
37‧‧‧活塞37‧‧‧Piston
38‧‧‧活塞桿38‧‧‧ piston rod
40‧‧‧消防管路40‧‧‧Fire pipeline
50‧‧‧感知灑水頭50‧‧‧Sensing sprinkler
60‧‧‧灑水頭60‧‧‧ sprinkler head
圖1是揭示出傳統減壓閥的配置示意圖；圖2是揭示出本創作實施例的配置示意圖；圖3是揭示出本創作實施例的構造剖示圖；圖4至圖7分別是圖3的動作示意圖。1 is a schematic view showing the configuration of a conventional pressure reducing valve; FIG. 2 is a schematic view showing the configuration of the present embodiment; FIG. 3 is a structural sectional view showing the present embodiment; FIG. 4 to FIG. Schematic diagram of the action.
10‧‧‧感知管路10‧‧‧Sense pipeline
11‧‧‧入水端11‧‧‧ into the water
12‧‧‧出水端12‧‧‧ water outlet
13‧‧‧第一歧管13‧‧‧First Manifold
14‧‧‧第二歧管14‧‧‧Second manifold
20‧‧‧減壓閥20‧‧‧Reducing valve
21‧‧‧入水口21‧‧‧ water inlet
22‧‧‧出水口22‧‧‧Water outlet
23‧‧‧容室23‧‧‧ Room
231‧‧‧閥口231‧‧‧ valve port
24‧‧‧減壓閥塞24‧‧‧Relief valve plug
25‧‧‧減壓室25‧‧‧Decompression room
26‧‧‧減壓閥塞彈簧26‧‧‧Relief valve plug spring
30‧‧‧增壓閥30‧‧‧Hydraulic valve
31‧‧‧入水口31‧‧‧ water inlet
32‧‧‧出水口32‧‧‧Water outlet
33‧‧‧水流通道33‧‧‧Water flow channel
331‧‧‧閥口331‧‧‧ valve port
34‧‧‧增壓閥塞34‧‧‧Pressed plug
35‧‧‧增壓室35‧‧‧ plenum
36‧‧‧增壓閥塞彈簧36‧‧‧Pressed plug spring
37‧‧‧活塞37‧‧‧Piston
38‧‧‧活塞桿38‧‧‧ piston rod
40‧‧‧消防管路40‧‧‧Fire pipeline
Claims (5)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101222365U TWM451456U (en) | 2012-11-19 | 2012-11-19 | Valve control safety device |
| CN 201220641525 CN203017634U (en) | 2012-11-19 | 2012-11-28 | Valve control safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101222365U TWM451456U (en) | 2012-11-19 | 2012-11-19 | Valve control safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM451456U true TWM451456U (en) | 2013-04-21 |
Family
ID=48641655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101222365U TWM451456U (en) | 2012-11-19 | 2012-11-19 | Valve control safety device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203017634U (en) |
| TW (1) | TWM451456U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11794047B2 (en) | 2020-07-31 | 2023-10-24 | Viking Group, Inc. | Fluid control valve assembly for fire protection systems |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI618553B (en) * | 2015-04-20 | 2018-03-21 | Protector Sprinkler Ind Co Ltd | Valve control device for fire water supply pipeline |
-
2012
- 2012-11-19 TW TW101222365U patent/TWM451456U/en not_active IP Right Cessation
- 2012-11-28 CN CN 201220641525 patent/CN203017634U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11794047B2 (en) | 2020-07-31 | 2023-10-24 | Viking Group, Inc. | Fluid control valve assembly for fire protection systems |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203017634U (en) | 2013-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK4K | Expiration of patent term of a granted utility model |