CN213151450U - Low-voltage power distribution cabinet - Google Patents
Low-voltage power distribution cabinet Download PDFInfo
- Publication number
- CN213151450U CN213151450U CN202022112373.1U CN202022112373U CN213151450U CN 213151450 U CN213151450 U CN 213151450U CN 202022112373 U CN202022112373 U CN 202022112373U CN 213151450 U CN213151450 U CN 213151450U
- Authority
- CN
- China
- Prior art keywords
- ventilation
- distribution cabinet
- power distribution
- separation plate
- main body
- 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
Images
Abstract
The application relates to a low-voltage power distribution cabinet, which relates to the field of power distribution cabinets and solves the problem of poor heat dissipation of the existing power distribution cabinet, and comprises an upper separation plate and a lower separation plate which are arranged in parallel in a power distribution cabinet main body, wherein the upper separation plate is positioned right above the lower separation plate, the upper separation plate and the lower separation plate divide the interior of the power distribution cabinet main body into upper ventilation cavities which are sequentially arranged from top to bottom, working chamber and lower ventilation chamber, first ventilation hole has been seted up on the top separation board, second ventilation hole has been seted up on the lower separation board, set up the third ventilation hole with the upper ventilation chamber intercommunication on the outer wall at switch board main part top, set up a plurality of fourth ventilation holes with lower ventilation chamber intercommunication on the outer wall of switch board main part bottom, the air that will ventilate the intracavity on is provided with and extracts the outside first exhaust fan of switch board main part, the intracavity that ventilates down sets up the second exhaust fan of drawing the lower ventilation intracavity with the outside air. It has good heat dissipation ability.
Description
Technical Field
The application relates to the field of power distribution cabinets, in particular to a low-voltage power distribution cabinet.
Background
The distribution cabinet (case) is a final-stage device of a distribution system and is divided into a power distribution cabinet (case), a lighting distribution cabinet (case) and a metering cabinet (case). The power distribution cabinet is a general name of a motor control center. The power distribution cabinet is used in the occasions with dispersed loads and less loops; the motor control center is used for occasions with concentrated loads and more loops. Today, power distribution cabinets have wide application in various industries when the life of people is not very separated.
Common switch board generally the thermal diffusivity is not too good on the market at present, and the electronic equipment in the switch board produces the heat easily after long time's use, and the switch board is difficult to discharge the outside with the heat in self, and the temperature in the switch board can rise to higher temperature like this, leads to the rubber insulation material in the switch board to age with higher speed, still can lead to inside electronic component to appear the short circuit when rubber insulation material is ageing seriously, and then causes the accident.
SUMMERY OF THE UTILITY MODEL
In order to provide a switch board with ventilation cooling function, this application provides a low-voltage distribution cabinet.
The application provides a low-voltage distribution cabinet adopts following technical scheme:
the utility model provides a low-voltage distribution cabinet, be provided with mutual parallel arrangement's top separation board and bottom division board in the switch board main part, the top separation board is located the bottom division board directly over, top separation board and bottom division board divide the switch board main part internal partitioning for the last ventilation chamber that from top to bottom laid in proper order, working chamber and lower ventilation chamber, first ventilation hole has been seted up on the top separation board, second ventilation hole has been seted up on the bottom division board, set up the third ventilation hole with last ventilation chamber intercommunication on the outer wall at switch board main part top, set up a plurality of fourth ventilation holes with lower ventilation chamber intercommunication on the outer wall of switch board main part bottom, the intracavity that ventilates is provided with and extracts the outside first exhaust fan of switch board main part outside with the air of last ventilation intracavity, the intracavity that ventilates sets up the second exhaust fan of taking outside air into the.
Through adopting above-mentioned technical scheme, the air extraction that first exhaust fan was ventilated chamber, working chamber and was ventilated the intracavity down is to the outside of switch board main part, and the second exhaust fan is in the switch board main part is taken out through fourth ventilation hole and second ventilation hole with the air of outside, has just so formed the circulation of air current for the thermal diffusivity greatly increased of switch board.
Preferably, the installation cavity has been seted up to the inside of top board and bottom plate, it is connected with the baffle that realizes first ventilation hole and second ventilation hole switching to rotate between the upper wall of installation cavity and the lower wall, the air vent has been seted up on the baffle, first ventilation hole on the top board that corresponds all sets up to a plurality ofly, second ventilation hole on the bottom plate also sets up to a plurality ofly, all be provided with in top ventilation cavity and the bottom plate ventilation intracavity and be used for driving the rotatory driving motor of baffle, the rigid coupling has circular shape drive gear on the outer peripheral face of baffle, link together through the gear train between driving motor and the drive gear, be provided with the temperature-sensing ware in the work cavity.
Through adopting above-mentioned technical scheme, when the temperature-sensing ware in the working chamber monitored the temperature in the working chamber and exceeded the setting value, the work was seted up to the driving motor in last ventilation chamber and the lower ventilation intracavity, and driving motor drives pivot and baffle rotation for a plurality of first ventilation holes and a plurality of second ventilation hole align with the air vent on the baffle that corresponds separately and open, and then first exhaust fan and second exhaust fan start dispel the heat in the working chamber.
Preferably, the rigid coupling has many blast pipes on the outside lateral wall of switch board main part, and the fourth ventilation hole in the switch board main part sets up to a plurality ofly, a plurality of fourth ventilation holes respectively with many blast pipes one-to-ones, many blast pipes are laid along the direction of height of switch board main part, the bottom of blast pipe is through fourth ventilation hole and lower ventilation chamber intercommunication.
Through adopting above-mentioned technical scheme, the blast pipe has promoted the height of fourth ventilation hole, leads to the lower ventilation chamber to intake when avoiding subaerial existence ponding as far as possible.
Preferably, the outer wall of the electric cabinet main body is fixedly connected with a first rainproof cover with a downward opening, the third ventilation hole is located in the first rainproof cover, the outer wall of the power distribution cabinet main body is further fixedly connected with a second rainproof cover with a downward opening, and the top ends of the exhaust pipes are located in the second rainproof cover.
Through adopting above-mentioned technical scheme, first rain-proof cover and second rain-proof cover can avoid in the rainwater of overcast and rainy day enters into the switch board.
Preferably, the opening edges of the bottoms of the first rain cover and the second rain cover are fixedly connected with a blocking net, and the top of the exhaust pipe penetrates through the blocking net on the second rain cover.
By adopting the technical scheme, the blocking net can intercept insects and the like, and the external insects are prevented from entering the working cavity as far as possible.
Preferably, all be provided with the dust filter screen in the one side of top compartment board and bottom divider board orientation each other, the dust filter screen on the top compartment board shelters from a plurality of first ventilation holes, and the dust filter screen on the bottom divider board shelters from a plurality of second ventilation holes.
Through adopting above-mentioned technical scheme, two dust filter screens can filter the dust in the air current, reduce dust as far as and enter into the working chamber and exert an influence to circuit element.
Preferably, equal rigid coupling has fixed frame in the one side of top board and bottom plate orientation each other, and the border of internal diameter all sets up back mounting groove in the one side of two fixed frame orientation each other, the outside border rigid coupling of dust filter screen have with the installing frame of mounting groove adaptation, the installing frame inlays to be established in the mounting groove, and through wearing to establish the bolt fastening between the diapire of installing frame and mounting groove.
Through adopting above-mentioned technical scheme, realized dust filter screen and fixed frame between can dismantle and be connected, after the long-time use of dust filter screen, the staff can change the dust filter screen, guarantees the air permeability of dust filter screen as far as.
Preferably, an elastic pad is arranged between the mounting frame and the bottom wall of the fixing groove.
Through adopting above-mentioned technical scheme, increased the leakproofness between installing frame and the fixed slot diapire.
In summary, the present application includes at least one of the following beneficial technical effects:
1. an upper ventilation cavity and a lower ventilation cavity are arranged in the power distribution cabinet, a first exhaust fan is arranged in the upper ventilation cavity, a second exhaust fan is arranged in the lower ventilation cavity, a first vent hole is formed in a first partition plate, a second vent hole is formed in a second partition plate, a third vent hole and a fourth vent hole are formed in the outer wall of the power distribution cabinet main body, so that air obtained in the power distribution cabinet main body and air outside the power distribution cabinet main body can form better circulation, and further the heat dissipation performance of the power distribution cabinet main body is better;
2. through set up the baffle in first division board and second division board, set up in last ventilation chamber and lower ventilation chamber simultaneously and be used for driving the rotatory driving motor of baffle, set up the temperature-sensing ware in the switch board main part, the temperature-sensing ware can carry out self-regulation according to the stability in the switch board, when the switch board main part does not need the heat dissipation, first exhaust fan and second exhaust fan can be out of work, and then the energy saving, simultaneously when the switch board main part does not need the heat dissipation, the working chamber in the switch board main part is in the encapsulated situation, the influence of external environment to each component in the working chamber has been reduced.
Drawings
Fig. 1 is a schematic structural diagram of the appearance of the power distribution cabinet in the embodiment;
FIG. 2 is a schematic view showing the internal structure of the power distribution cabinet in the present embodiment;
FIG. 3 is a schematic view showing a structure of the installation of the salient baffle in the installation cavity in the present embodiment;
fig. 4 is a schematic view of a highlighted dust screen mounting structure in this embodiment.
Description of reference numerals: 1. a power distribution cabinet main body; 11. an upper partition plate; 111. a first vent hole; 12. a bottom divider plate; 121. a second vent hole; 13. an upper vent chamber; 131. a first exhaust fan; 14. a working chamber; 141. a temperature sensor; 15. a lower vent chamber; 151. a second exhaust fan; 16. a third vent hole; 17. a fourth vent hole; 18. a first rain cover; 19. a second rain cover; 2. a mounting cavity; 21. a rotating shaft; 211. a baffle plate; 2111. a vent hole; 2112. a drive gear; 3. a drive motor; 4. a gear set; 5. an exhaust pipe; 6. blocking the net; 7. a fixing frame; 71. mounting grooves; 711. an elastic pad; 8. a dust filter screen; 81. and (5) installing the frame.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
Referring to fig. 1 and 2, the embodiment of the application discloses a low-voltage power distribution cabinet, which comprises a power distribution cabinet main body 1, wherein a door plate used for closing the power distribution cabinet main body 1 is hinged to the power distribution cabinet main body 1. Be provided with top separation board 11 and bottom division board 12 in the switch board main part 1, top separation board 11 and bottom division board 12 are parallel to each other, and top separation board 11 is located bottom division board 12 directly over, and top separation board 11 and bottom division board 12 divide into last ventilation chamber 13, working chamber 14 and lower ventilation chamber 15 in the switch board main part 1, and last ventilation chamber 13, working chamber 14 and lower ventilation chamber 15 lay from top to bottom in proper order.
Referring to fig. 2 and 3, the upper separation plate 11 is provided with a first vent hole 111, the lower separation plate 12 is provided with a second vent hole 121, the outer wall of the top of the power distribution cabinet main body 1 is provided with a third vent hole 16 communicated with the upper vent cavity 13, and the outer wall of the bottom of the power distribution cabinet main body 1 is provided with a plurality of fourth vent holes 17 communicated with the lower vent cavity 15. A plurality of first exhaust fans 131 are arranged in the upper ventilation cavity 13 and used for extracting air in the upper ventilation cavity 13 to the outside of the power distribution cabinet main body 1, the first exhaust fans 131 are arranged along the length direction of the third ventilation hole 16, a plurality of second exhaust fans 151 are arranged in the lower ventilation cavity 15 and used for extracting external air to the lower ventilation cavity 15, and the second exhaust fans 151 are arranged along the length direction of the fourth ventilation hole 17.
The first exhaust fan 131 extracts the air in the upper ventilating cavity 13, the working cavity 14 and the lower ventilating cavity 15 to the outside of the power distribution cabinet main body 1, and the second exhaust fan 151 extracts the outside air into the power distribution cabinet main body 1 through the fourth ventilating hole 17 and the second ventilating hole 121, so that the circulation of air flow is formed, and the heat dissipation performance of the power distribution cabinet is greatly increased.
Circular mounting cavity 2 has been seted up to the inside of top divider board 11 and bottom divider board 12, rotates between the upper wall and the lower wall of mounting cavity 2 to be connected with pivot 21, and the rigid coupling has circular shape baffle 211 on the outer peripheral face of pivot 21, and baffle 211 is perpendicular with pivot 21, and has seted up sectorial air vent 2111 on the baffle 211, and a plurality of air vent 2111 are laid along the axial of pivot 21 equiangularly. The corresponding first vent holes 111 on the top separation plate 11 are provided in plurality, the corresponding second vent holes 121 on the bottom separation plate 12 are also provided in plurality, and the shapes and sizes of the first vent holes 111 and the second vent holes 121 are the same as those of the vent holes 2111. The first vent holes 111 correspond to the vent holes 2111 in the internal baffle plate 211 of the top separation plate 11, and the second vent holes 121 correspond to the vent holes 2111 in the internal baffle plate 211 of the bottom separation plate 12. The shutter 211 in the top partition plate 11 can open and close the plurality of first ventilation holes 111. The shutter 211 in the bottom separation plate 12 can open and close the plurality of second ventilation holes 121. The upper ventilation cavity 13 and the lower ventilation cavity 15 are internally provided with a driving motor 3 for driving the rotating shaft 21 to rotate, the outer peripheral surface of the baffle 211 is fixedly connected with a circular driving gear 2112, and the driving motor 3 and the driving gear 2112 are connected together through a gear set 4. A temperature sensor 141 is provided in the working chamber 14.
Referring to fig. 1, when the temperature sensor 141 in the working chamber 14 monitors that the temperature in the working chamber 14 exceeds a set value, the driving motors 3 in the upper ventilation chamber 13 and the lower ventilation chamber 15 are turned on to operate, and the driving motors 3 drive the rotating shafts 21 and the baffles 211 to rotate, so that the first ventilation holes 111 and the second ventilation holes 121 are aligned with the ventilation holes 2111 on the respective baffles 211 and opened, and then the first exhaust fan 131 and the second exhaust fan 151 are started to radiate heat in the working chamber.
Referring to fig. 2, a plurality of exhaust pipes 5 are fixedly connected to the outer side wall of the power distribution cabinet main body 1, a plurality of fourth vent holes 17 are formed in the power distribution cabinet main body 1 and correspond to the plurality of exhaust pipes 5 one to one, the plurality of exhaust pipes 5 are arranged in the height direction of the power distribution cabinet main body 1, and the bottom ends of the exhaust pipes 5 are communicated with the lower ventilation cavity 15 through the fourth vent holes 17. The exhaust pipe 5 raises the height of the fourth vent hole 17, and water is prevented from entering the lower vent cavity 15 when accumulated water exists on the ground as far as possible.
Further, the rigid coupling has first rain-proof cover 18 that the opening set up downwards on the outer wall of switch board main part 1, and third ventilation hole 16 is located first rain-proof cover 18, still the rigid coupling has the second rain-proof cover 19 that the opening is decurrent on the outer wall of switch board main part 1, and the top of many blast pipes 5 is located the rain-proof cover 19 of second. First rain-proof cover 18 and the rain-proof cover 19 of second can avoid in the rainwater of overcast and rainy day gets into the switch board.
Furthermore, the opening edges of the bottoms of the first rain cover 18 and the second rain cover 19 are fixedly connected with a blocking net 6 for preventing insects from entering, and the top of the exhaust pipe 5 passes through the blocking net 6 on the second rain cover 19.
Referring to fig. 2 and 4, the dust filter 8 is disposed on each of the facing surfaces of the top separation plate 11 and the bottom separation plate 12, and an annular mounting frame 81 is fixed to the edge of the dust filter 8. The rigid coupling has the fixed frame 7 of rectangle in the one side of top divider board 11 and bottom divider board 12 each other orientation, a plurality of first ventilation holes 111 all are located the fixed frame 7 on top divider board 11, a plurality of second ventilation holes 121 all are located the fixed frame 7 on bottom divider board 12, and two installing frames 81 all have seted up annular mounting groove 71 towards the internal diameter border of one side each other, two installing frames 81 inlay respectively and establish in two mounting grooves 71, and be provided with annular cushion 711 between the diapire of installing frame 81 and mounting groove 71, through wearing to establish the fix with screw together between the diapire of installing frame 81 and mounting groove 71. Air in the switch board is in the circulation, and two dust filter screens 8 can filter the dust in the air current, and it influences circuit element to reduce dust entering working chamber 14 as far as possible.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a low-voltage distribution cabinet which characterized in that: comprises an upper separation plate (11) and a lower separation plate (12) which are arranged in parallel in a power distribution cabinet main body (1), wherein the upper separation plate (11) is positioned right above the lower separation plate (12), the upper separation plate (11) and the lower separation plate (12) separate the interior of the power distribution cabinet main body (1) into an upper ventilation cavity (13), a working cavity (14) and a lower ventilation cavity (15) which are sequentially arranged from top to bottom, a first ventilation hole (111) is formed in the upper separation plate (11), a second ventilation hole (121) is formed in the lower separation plate (12), a third ventilation hole (16) communicated with the upper ventilation cavity (13) is formed in the outer wall of the top of the power distribution cabinet main body (1), a plurality of fourth ventilation holes (17) communicated with the lower ventilation cavity (15) are formed in the outer wall of the bottom of the power distribution cabinet main body (1), a first ventilation fan (131) for pumping air in the upper ventilation cavity (13) to the exterior of the power distribution cabinet main body (1), a second exhaust fan (151) for extracting outside air into the lower ventilation cavity (15) is arranged in the lower ventilation cavity (15).
2. A low-voltage distribution cabinet according to claim 1, characterized in that: the inner parts of the upper separation plate (11) and the lower separation plate (12) are provided with an installation cavity (2), a baffle plate (211) for realizing the opening and closing of the first vent hole (111) and the second vent hole (121) is rotatably connected between the upper wall and the lower wall of the installation cavity (2), the baffle plate (211) is provided with a vent hole (2111), first ventilation hole (111) on the last division board (11) that corresponds all sets up to a plurality ofly, second ventilation hole (121) on bottom division board (12) also set up to a plurality ofly, all be provided with in last ventilation chamber (13) and lower ventilation chamber (15) and be used for driving motor (3) that baffle (211) are rotatory, the rigid coupling has circular shape drive gear (2112) on the outer peripheral face of baffle (211), link together through gear train (4) between driving motor (3) and drive gear (2112), be provided with temperature-sensing ware (141) in working chamber (14).
3. A low-voltage distribution cabinet according to claim 1, characterized in that: the outer side wall of the power distribution cabinet main body (1) is fixedly connected with a plurality of exhaust pipes (5), fourth ventilation holes (17) in the power distribution cabinet main body (1) are arranged to be multiple, the fourth ventilation holes (17) are in one-to-one correspondence with the exhaust pipes (5), the exhaust pipes (5) are arranged along the height direction of the power distribution cabinet main body (1), and the bottom ends of the exhaust pipes (5) are communicated with the lower ventilation cavity (15) through fourth ventilation holes (17).
4. A low-voltage distribution cabinet according to claim 3, characterized in that: the outer wall of the electric cabinet main body is fixedly connected with a first rainproof cover (18) with a downward opening, the third ventilation hole (16) is located in the first rainproof cover (18), the outer wall of the power distribution cabinet main body (1) is further fixedly connected with a second rainproof cover (19) with a downward opening, and the top ends of the exhaust pipes (5) are located in the second rainproof cover (19).
5. A low-voltage distribution cabinet according to claim 4, characterized in that: the opening edge of the bottoms of the first rain cover (18) and the second rain cover (19) is fixedly connected with a blocking net (6), and the top of the exhaust pipe (5) penetrates through the blocking net (6) on the second rain cover (19).
6. A low-voltage distribution cabinet according to claim 1, characterized in that: all be provided with dust filter screen (8) on the one side of top separation board (11) and bottom separation board (12) each other orientation, dust filter screen (8) on top separation board (11) shelter from a plurality of first ventilation hole (111), and dust filter screen (8) on bottom separation board (12) shelter from a plurality of second ventilation hole (121).
7. A low-voltage distribution cabinet according to claim 6, characterized in that: the utility model discloses a dust filter screen, including last division board (11) and bottom division board (12), equal rigid coupling has fixed frame (7) in the one side of going towards each other of last division board (11) and bottom division board (12), mounting groove (71) after the border of internal diameter all seted up in the one side of two fixed frame (7) orientation each other, the outer border rigid coupling of dust filter screen (8) have with mounting frame (81) of mounting groove (71) adaptation, mounting frame (81) inlay and establish in mounting groove (71), and through wearing to establish the bolt fastening between the diapire of mounting frame (81) and mounting groove (71).
8. A low-voltage distribution cabinet according to claim 7, characterized in that: an elastic pad (711) is arranged between the mounting frame (81) and the bottom wall of the fixing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022112373.1U CN213151450U (en) | 2020-09-23 | 2020-09-23 | Low-voltage power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022112373.1U CN213151450U (en) | 2020-09-23 | 2020-09-23 | Low-voltage power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213151450U true CN213151450U (en) | 2021-05-07 |
Family
ID=75717922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022112373.1U Active CN213151450U (en) | 2020-09-23 | 2020-09-23 | Low-voltage power distribution cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213151450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113193492A (en) * | 2021-05-14 | 2021-07-30 | 国家电网有限公司 | Switch cabinet with pressure relief protection function |
-
2020
- 2020-09-23 CN CN202022112373.1U patent/CN213151450U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113193492A (en) * | 2021-05-14 | 2021-07-30 | 国家电网有限公司 | Switch cabinet with pressure relief protection function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213151450U (en) | Low-voltage power distribution cabinet | |
| CN112533454A (en) | Electric automatic control cabinet | |
| CN210224745U (en) | Ventilation type switch board | |
| CN210517448U (en) | Ventilation cooling type switch board | |
| CN217692248U (en) | Power distribution cabinet convenient to ventilate | |
| CN213520752U (en) | Safe type prevention of seepage switch board | |
| CN212256209U (en) | Computer machine case heat radiation structure | |
| CN213753722U (en) | Rain-proof outdoor block terminal that ventilates convenient to installation | |
| CN209929725U (en) | Intelligent control cabinet condensation processing apparatus based on air convection principle | |
| CN210327422U (en) | Low pressure variable frequency control cabinet with two heat radiation structure | |
| CN206806837U (en) | A kind of prefabricated cabin and ventilating system | |
| CN219843299U (en) | Efficient heat dissipation's dust protected switch board | |
| CN213959376U (en) | Power distribution cabinet with auxiliary heat dissipation mechanism at bottom | |
| CN206117250U (en) | Direct current of being applied to high -altitude area cabinet that charges | |
| CN220324941U (en) | Rainproof and heat-dissipation multifunctional power distribution cabinet | |
| CN220291495U (en) | Outdoor transformer substation | |
| CN217062897U (en) | Novel heat dissipation box of cubical switchboard | |
| CN115441313B (en) | Electrical equipment box | |
| CN214481782U (en) | Heat dissipation formula electrical control cabinet device of electrical control locking | |
| CN218550426U (en) | Novel outdoor cabinet with high protection level | |
| CN208045983U (en) | A kind of bilayer cabinet body structure of power distribution cabinet | |
| CN213367048U (en) | Outdoor waterproof thermal-insulated switch board | |
| CN219591861U (en) | High-efficient heat dissipation regulator cubicle | |
| CN214850007U (en) | Outdoor switch board of rain-proof water seepage | |
| CN210608196U (en) | Outdoor power distribution cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |