CN219539322U - DC spraying fire-fighting lance - Google Patents

DC spraying fire-fighting lance Download PDF

Info

Publication number
CN219539322U
CN219539322U CN202320665299.7U CN202320665299U CN219539322U CN 219539322 U CN219539322 U CN 219539322U CN 202320665299 U CN202320665299 U CN 202320665299U CN 219539322 U CN219539322 U CN 219539322U
Authority
CN
China
Prior art keywords
swing joint
water
seat
movably connected
fire
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
Application number
CN202320665299.7U
Other languages
Chinese (zh)
Inventor
张�浩
曹卫兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiujiang Sudahui Supply Chain Management Co ltd
Original Assignee
Jiujiang Sudahui Supply Chain Management Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiujiang Sudahui Supply Chain Management Co ltd filed Critical Jiujiang Sudahui Supply Chain Management Co ltd
Priority to CN202320665299.7U priority Critical patent/CN219539322U/en
Application granted granted Critical
Publication of CN219539322U publication Critical patent/CN219539322U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to the technical field of fire-fighting lances, and discloses a direct-current spray fire-fighting lance, which comprises a lance holder, wherein the end part of the lance holder is fixedly connected with a sixth O-shaped rubber sealing ring, the interior of the lance holder is movably connected with a lance core, and the end part of the lance holder is movably connected with a water outlet outer pipe; the utility model has a reflecting block and a bell mouth in the nozzle of the direct-current spray (recoilless) fire-fighting lance, which makes the high-pressure water flow continuously rush out of the nozzle to strike the reflecting block, so that the water flow is not directly sprayed out of the nozzle without blocking, but is subjected to multiple reflections to form a mechanical and fluid buffer, thus achieving a good decompression function, being not only the best equipment for fire fighting and saving, but also a good water gun for spraying and sprinkling in the fields of forestry, agriculture and industrial enterprises, being multifunctional and multipurpose, being unique to excellent rescue equipment with a function, and being incomparable with the conventional common fire-fighting lance.

Description

DC spraying fire-fighting lance
Technical Field
The utility model relates to the technical field of fire-fighting lances, in particular to a direct-current spray fire-fighting lance.
Background
Fire-fighting lance: is a fire-extinguishing water jetting tool, and when the fire-extinguishing water jetting tool is connected with a water hose, dense and rich water flow can be jetted. The jet flow type water jet has the advantages of long jet range, large water quantity and the like, and can be divided into: a direct current water gun, a spray water gun, a multipurpose water gun and the like. Among the usual water guns are direct current and spray water guns.
The existing fire-fighting lance is suitable for different use scenes according to classification of the types, and can not be used in different scenes rapidly, so that the overall practicability of the fire-fighting lance is reduced, and therefore, the direct-current spray fire-fighting lance is provided.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a direct-current spray fire-fighting lance so as to solve the problems in the prior art.
The utility model provides the following technical scheme: the direct-current spray fire-fighting lance comprises a lance holder, a sixth O-shaped rubber sealing ring is fixedly connected to the end part of the lance holder, a lance core is movably connected to the inside of the lance holder, a water outlet outer pipe is movably connected to the end part of the lance holder, a pin is movably connected to the inside of the water outlet outer pipe, an adjusting ring body is movably sleeved on the outer side of the surface of the water outlet outer pipe, a plastic ring on the adjusting ring is fixedly sleeved on the outer side of the surface of the adjusting ring body, a spring seat is movably connected to the inside of the adjusting ring body, a compression spring is fixedly connected to the bottom end of the spring seat, a second steel ball is movably connected to the bottom end of the compression spring, a sliding sleeve is movably connected to the inside of the adjusting ring body, an adjusting screw is movably connected to the bottom end of the sliding sleeve and the inside of the adjusting ring body, a spring body is movably connected to the inside of the water outlet outer pipe, a water outlet inner pipe is movably connected to the inside of the water outlet outer pipe, the outer side of the end surface of the water outlet inner pipe is movably sleeved with a seventh O-shaped rubber sealing ring and an eighth O-shaped rubber sealing ring respectively, the outer side of the end surface of the water outlet outer pipe is movably sleeved with a ferrule body, the surface of the ferrule body is fixedly sleeved with a plastic ring on the ferrule, the inner part of the ferrule body is movably connected with an inner hexagonal flat end set screw, the inner part of the ferrule body is movably connected with a marble retainer ring, the inner part of the ferrule body is movably connected with a spray pipe, the inner part of the spray pipe is movably connected with an inner hexagonal cylinder end set screw, the surface of the spray pipe is provided with a groove matched with a second steel ball, the outer side of the surface of the spray pipe is movably sleeved with a spray head rubber ring, the end part of the gun core is movably connected with a water spray rotating ring, the inner side of the end part of the spray head rubber ring is movably connected with a water spray fixing ring, the inside of the water spraying fixing ring is movably connected with a cross groove cylindrical head screw, the surface of the water spraying rotating ring is movably connected with a water spraying pressure head, and the inside of the water spraying pressure head and the inside of the gun core are both movably connected with a second cross pan head screw;
further, the bottom fixedly connected with handle body of rifle seat, one side swing joint of rifle seat has the switch shaft, one side fixedly connected with fifth O shape rubber seal of rifle seat, one side swing joint of rifle seat has the switch handle, swing joint has second interior hexagonal cone end holding screw between switch handle's tip and the switch shaft, swing joint has first cross pan head screw between switch handle's tip and the switch shaft, the inboard swing joint of switch handle has second interior hexagonal cone head screw.
Further, the inside swing joint of rifle seat has the ball seat, the inboard swing joint of ball seat has the ball body, the tip fixedly connected with fourth O shape rubber seal of ball seat, the inside swing joint of rifle seat has the connecting piece, the tip swing joint of connecting piece has the ball seat, the other end surface outside swing joint of connecting piece has first steel ball, the other end fixedly connected with third O shape rubber seal of connecting piece, joint nut has been cup jointed in the other end surface outside activity of connecting piece, swing joint has first interior hexagonal cone end holding screw between joint nut and the connecting piece, the other end inboard fixedly connected with second O shape rubber seal of joint nut, the opposite side of joint nut has screw thread movable connection through screw thread movable connection, the other end inboard fixedly connected with first O shape rubber seal of screw thread connection, the other end inboard of screw thread connection has the water inlet body through screw thread movable connection, the surface outside of water inlet body has movably cup jointed the water inlet collar.
Further, a first hexagon socket head cap screw is movably connected inside the bottom end of the handle body.
Further, the surface of the plastic ring on the adjusting ring is provided with five-gear adjusting indexes.
Further, anti-skid patterns are formed on the outer side of the surface of the adjusting ring body.
The utility model has the technical effects and advantages that:
1. the utility model has a reflecting block and a bell mouth in the nozzle of the direct-current spray (recoilless) fire-fighting lance, which makes the high-pressure water flow continuously rush out of the nozzle to strike the reflecting block, so that the water flow is not directly sprayed out of the nozzle without blocking, but is subjected to multiple reflections to form a mechanical and fluid buffer, thus achieving a good decompression function, being not only the best equipment for fire fighting and saving, but also a good water gun for spraying and sprinkling in the fields of forestry, agriculture and industrial enterprises, being multifunctional and multipurpose, being unique to excellent rescue equipment with a function, and being incomparable with the conventional common fire-fighting lance.
2. The utility model relates to a direct-current spray (recoilless) fire-fighting lance which adopts high-quality novel aluminum alloy as main materials, adopts T5 heat treatment, adopts anodic oxidation plating on the inner and outer surfaces of components, is hard and corrosion-resistant, has attractive appearance, is small and exquisite, consists of a front part, a middle part and a rear part, and is convenient to use, wherein the front part is a spray cone, a nozzle, a reflecting block, a flow state regulator, a flow regulator, a ball valve in the middle part, an annular switch handle, a pistol grip, an adjustable direction sleeve in the rear part, a gun seat, an interface and the like.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic diagram of the overall exploded structure of the present utility model.
Fig. 3 is a schematic view of the separation structure of fig. 2 a according to the present utility model.
Fig. 4 is a schematic view of the separation structure of fig. 2B according to the present utility model.
The reference numerals are: 1. a water inlet body; 2. a water inlet collar; 3. a first O-ring rubber seal; 4. a threaded interface; 5. a second O-shaped rubber seal ring; 6. a joint nut; 7. a first inner hexagonal cone end set screw; 8. a third O-shaped rubber seal ring; 9. a first steel ball; 10. a connecting piece; 11. a fourth O-ring rubber seal; 12. a ball seat; 13. a ball body; 14. the first hexagon socket head cap screw; 15. a handle body; 16. a gun seat; 17. a switching shaft; 18. a fifth O-ring rubber seal; 19. the second inner hexagonal cone end is provided with a set screw; 20. a first cross pan head screw; 21. a sixth O-ring rubber seal; 22. the second hexagon socket head cap screw; 23. a switch handle; 24. a gun core; 25. plastic rings on the adjusting ring; 26. a spring seat; 27. a compression spring; 28. a second steel ball; 29. a sliding sleeve; 30. an adjusting screw; 31. an adjusting ring body; 32. a water outlet outer tube; 33. a pin; 34. a spring body; 35. a seventh O-ring rubber seal; 36. a water outlet inner pipe; 37. an eighth O-ring rubber seal; 38. a plastic ring is arranged on the collar; 39. a hexagon socket head end set screw; 40. a ferrule body; 41. a ball retainer ring; 42. the end of the inner hexagonal cylinder is tightly fixed with a screw; 43. a water spray pipe; 44. a nozzle rubber ring; 45. a water spraying rotary ring; 46. a water spraying fixing ring; 47. cross groove cylindrical head screw; 48. a water spraying pressure head; 49. and a second cross pan head screw.
Detailed Description
The embodiments of the present utility model will be described more fully hereinafter with reference to the accompanying drawings, in which the embodiments of the present utility model are shown by way of illustration only, and the utility model is not limited to the embodiments of the present utility model, but other embodiments of the present utility model will be apparent to those skilled in the art without making any inventive effort.
Referring to FIGS. 1-4, the utility model provides a direct-current spray fire-fighting lance, which comprises a lance holder 16, a sixth O-shaped rubber sealing ring 21 is fixedly connected to the end part of the lance holder 16, a lance core 24 is movably connected to the inside of the lance holder 16, a water outlet outer pipe 32 is movably connected to the end part of the lance holder 16, a pin 33 is movably connected to the inside of the water outlet outer pipe 32, an adjusting ring body 31 is movably sleeved on the outer side of the surface of the water outlet outer pipe 32, a plastic ring 25 is fixedly sleeved on the outer side of the surface of the adjusting ring body 31, a spring seat 26 is movably connected to the inside of the adjusting ring body 31, a compression spring 27 is fixedly connected to the bottom end of the spring seat 26, a second steel ball 28 is movably connected to the bottom end of the compression spring 27, a sliding sleeve 29 is movably connected to the bottom end of the sliding sleeve 29 and the inside of the adjusting ring body 31, an adjusting screw 30 is movably connected to the inside of the water outlet outer pipe 32, the inner part of the water outlet outer pipe 32 is movably connected with the water outlet inner pipe 36, the outer side of the end surface of the water outlet inner pipe 36 is respectively and movably sleeved with a seventh O-shaped rubber sealing ring 35 and an eighth O-shaped rubber sealing ring 37, the outer side of the end surface of the water outlet outer pipe 32 is movably sleeved with a ferrule body 40, the surface of the ferrule body 40 is fixedly sleeved with a ferrule upper plastic ring 38, the inner part of the ferrule body 40 is movably connected with an inner hexagonal flat end set screw 39, the inner part of the ferrule body 40 is movably connected with a marble retainer ring 41, the inner part of the ferrule body 40 is movably connected with a spray pipe 43, the inner part of the spray pipe 43 is movably connected with an inner hexagonal cylindrical end set screw 42, the surface of the spray pipe 43 is provided with a groove matched with the second steel ball 28, the outer side of the surface of the spray pipe 43 is movably sleeved with a nozzle rubber ring 44, the end of the gun core 24 is movably connected with a spray rotating ring 45, the inner side of the end part of the nozzle rubber ring 44 is movably connected with a water spraying fixed ring 46, the inside of the water spraying fixed ring 46 is movably connected with a cross groove cylindrical head screw 47, the surface of the water spraying rotary ring 45 is movably connected with a water spraying pressure head 48, and the water spraying pressure head 48 and the inside of the gun core 24 are movably connected with a second cross disk head screw 49;
the bottom fixedly connected with handle body 15 of rifle seat 16, one side swing joint of rifle seat 16 has switch shaft 17, one side fixedly connected with fifth O shape rubber seal 18 of rifle seat 16, one side swing joint of rifle seat 16 has switch handle 23, swing joint has second interior hexagonal cone end holding screw 19 between switch handle 23's tip and the switch shaft 17, swing joint has first cross pan head screw 20 between switch handle 23's tip and the switch shaft 17, switch handle 23's inboard swing joint has second interior hexagonal cone head screw 22, the device is whole to be opened and closed fast of being convenient for, convenient quick use.
Wherein, the inside swing joint of rifle seat 16 has ball seat 12, the inboard swing joint of ball seat 12 has ball body 13, the tip fixedly connected with fourth O shape rubber seal 11 of ball seat 12, the inside swing joint of rifle seat 16 has connecting piece 10, the tip swing joint of connecting piece 10 has ball seat 12, the other end surface outside swing joint of connecting piece 10 has first steel ball 9, the other end fixedly connected with third O shape rubber seal 8 of connecting piece 10, joint nut 6 has been cup jointed in the other end surface outside swing joint of connecting piece 10, swing joint has first interior hexagonal cone end holding screw 7 between joint nut 6 and the connecting piece 10, the other side of joint nut 6 has screw thread interface 4 through screw swing joint, the other end inboard fixedly connected with first O shape rubber seal 3 of screw thread interface 4, the other end inboard through screw thread swing joint has water inlet body 1, the surface outside swing joint of water inlet body 1 has water inlet rand 2, be convenient for can be connected with outside water source, can use the whole device, thereby can be used stably for the device is whole, water supply operation is convenient.
Wherein, the inside swing joint of bottom of handle body 15 has first interior hexagonal cylinder head screw 14, is convenient for restrict fixedly to the position of handle body 15 to be convenient for grip the use, convenient operation.
Wherein, the surface of plastic circle 25 is equipped with five grades of regulation indexes on the regulation circle, is convenient for can carry out the adjustment processing of multispeed to the device whole.
Wherein, anti-skidding lines have been seted up in the surface outside of adjusting ring body 31, thereby be convenient for rotate adjusting ring body 31 fast and adjust, convenient operation.
The working principle of the utility model is as follows: in the use process, the device is provided with a reflecting block and a horn mouth in the nozzle, so that high-pressure water flow continuously rushes out of the nozzle to strike the reflecting block, the water flow is not sprayed out of the nozzle directly without blocking, but is subjected to multiple reflections to form a mechanical and fluid buffer, a good decompression function is achieved, meanwhile, the front end of the gun head is provided with spray turbine teeth, so that the spray refines to absorb heat and adsorb smoke dust better, the device is suitable for fire suppression of electrified electric appliances, the spray state can be changed by stretching before or after rotating the gun head sleeve, the spray device is columnar to facilitate fire extinguishing under the force of intensified water, the effective water spraying area can be increased in an umbrella shape to facilitate water spraying cooling, and 5-gear flow rate changes can be adjusted, 2.5L/S-5.5L/S-8L/S and gun chamber shock flow rate changes are respectively obtained, the gun head is used under the condition of meeting multiple occasions, the water spray device is provided with a horseshoe-shaped annular switch, an aluminum alloy ball valve in the gun body is convenient to open and close, a direction adjusting sleeve is used for internally and smoothly adjusting the water flow, the water spraying device is used for directly spraying the water gun under the condition of no pressure when compared with the same fire-fighting lance, and finally under the condition of no pressure kg is compared with the ordinary fire-fighting lance when the fire-fighting lance is sprayed under the condition of the fire-fighting lance:
a. the reaction force of the common direct current water gun is 17.5kg
b. Adjustable recoilless fire-fighting lance with reaction force of 1kg
c. The water gun is easy to be released when the pressure of the common direct-current water gun is 7.5kg during injection
d. The direct-current spray (recoilless) fire-fighting lance is pressurized to 14kg during spraying, and one person holds the water-based lance to spray normally and directly, so that the water-based fire-fighting lance is convenient to use rapidly.
The last points to be described are: first, in the description of the present utility model, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;
secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;
finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (6)

1. The utility model provides a direct current spraying fire-fighting lance, includes rifle seat (16), its characterized in that: the end part of the gun seat (16) is fixedly connected with a sixth O-shaped rubber sealing ring (21), the inner movable connection of the gun seat (16) is provided with a gun core (24), the end part of the gun seat (16) is movably connected with a water outlet outer pipe (32), the inner movable connection of the water outlet outer pipe (32) is provided with a pin (33), the outer side of the surface of the water outlet outer pipe (32) is movably sleeved with an adjusting ring body (31), the outer side of the surface of the adjusting ring body (31) is fixedly sleeved with an adjusting ring plastic ring (25), the inner movable connection of the adjusting ring body (31) is provided with a spring seat (26), the bottom end of the spring seat (26) is fixedly connected with a compression spring (27), the bottom end of the compression spring (27) is movably connected with a second steel ball (28), the inner movable connection of the adjusting ring body (31) is provided with a sliding sleeve (29), the bottom end of the sliding sleeve (29) and the inner movable connection of the adjusting ring body (31) are provided with an adjusting screw (30), the inner movable connection of the water outlet outer pipe (32) is provided with a spring body (34), the inner movable connection of the water outlet outer pipe (32) is provided with an inner pipe (36), the inner movable connection of the water outlet (32) is provided with an inner pipe (36), the inner movable connection is provided with an outer pipe (36), the outer water outlet (35) and the outer side of the water outlet pipe (37) is provided with an O-shaped sealing ring, the utility model provides a water spray head, including outer pipe (32) of going out, tip surface outside activity of going out water outer pipe (32) has cup jointed lasso body (40), the fixed surface of lasso body (40) has cup jointed plastics circle (38) on the lasso, the inside swing joint of lasso body (40) has interior hexagonal flat end holding screw (39), the inside swing joint of lasso body (40) has marble retainer ring (41), the inside swing joint of lasso body (40) has spray pipe (43), the inside swing joint of spray pipe (43) has interior hexagonal cylinder end holding screw (42), the recess with second steel ball (28) looks adaptation is seted up on the surface of spray pipe (43), the surface outside activity of spray pipe (43) has cup jointed shower nozzle rubber circle (44), the tip swing joint of rifle core (24) has water spray swivel (45), the inside swing joint of tip rubber circle (44) has retainer ring (46), the inside swing joint of retainer ring (46) has cross groove cylindrical head screw (47), the surface swing joint of swivel (43) has pressure head (48) and water spray head (48) all swing joint has water spray head screw (48).
2. The direct current spray fire water monitor of claim 1, wherein: the novel gun is characterized in that the bottom end of the gun seat (16) is fixedly connected with the handle body (15), one side of the gun seat (16) is movably connected with the switch shaft (17), one side of the gun seat (16) is fixedly connected with the fifth O-shaped rubber sealing ring (18), one side of the gun seat (16) is movably connected with the switch handle (23), a second inner hexagonal cone end fastening screw (19) is movably connected between the end of the switch handle (23) and the switch shaft (17), a first cross pan head screw (20) is movably connected between the end of the switch handle (23) and the switch shaft (17), and a second inner hexagonal cone head screw (22) is movably connected with the inner side of the switch handle (23).
3. The direct current spray fire water monitor of claim 1, wherein: the inside swing joint of rifle seat (16) has ball seat (12), the inboard swing joint of ball seat (12) has ball body (13), the tip fixedly connected with fourth O shape rubber seal (11) of ball seat (12), the inside swing joint of rifle seat (16) has connecting piece (10), the tip swing joint of connecting piece (10) has ball seat (12), the other end surface outside swing joint of connecting piece (10) has first steel ball (9), the other end fixedly connected with third O shape rubber seal (8) of connecting piece (10), the other end surface outside swing joint of connecting piece (10) has joint nut (6), swing joint has first interior six pyramid end holding screw (7) between joint nut (6) and connecting piece (10), the other end inboard fixedly connected with second O shape rubber seal (5) of joint nut (6), the opposite side of joint nut (6) has threaded connection (4) through screw thread swing joint, the other end inboard fixedly connected with first O shape rubber seal (3) of threaded connection (4), the water inlet (1) through threaded connection of the body (1), the water inlet collar (2) is movably sleeved on the outer side of the surface of the water inlet body (1).
4. The direct current spray fire water monitor of claim 2, wherein: the inside swing joint of bottom of handle body (15) has first interior hexagonal cylinder head screw (14).
5. The direct current spray fire water monitor of claim 1, wherein: five-gear adjusting indexes are arranged on the surface of the plastic ring (25) on the adjusting ring.
6. The direct current spray fire water monitor of claim 1, wherein: anti-skid patterns are formed on the outer side of the surface of the adjusting ring body (31).
CN202320665299.7U 2023-03-30 2023-03-30 DC spraying fire-fighting lance Active CN219539322U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320665299.7U CN219539322U (en) 2023-03-30 2023-03-30 DC spraying fire-fighting lance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320665299.7U CN219539322U (en) 2023-03-30 2023-03-30 DC spraying fire-fighting lance

Publications (1)

Publication Number Publication Date
CN219539322U true CN219539322U (en) 2023-08-18

Family

ID=87728836

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320665299.7U Active CN219539322U (en) 2023-03-30 2023-03-30 DC spraying fire-fighting lance

Country Status (1)

Country Link
CN (1) CN219539322U (en)

Similar Documents

Publication Publication Date Title
CN207839213U (en) Jetting machine and nozzle applied to jetting machine
CA2524601A1 (en) Sprayer having a spray shield and a spray shield retainer
CN204261240U (en) A kind of injection gun for fire fighting
CN108747845A (en) Add sand pistol after high pressure water
CN219539322U (en) DC spraying fire-fighting lance
CN214554579U (en) Portable water gun with power
CN204745441U (en) Multi -functional squirt of turning
CN211611408U (en) Portable sprinkler head assembly
CN208660202U (en) A kind of multifunctional spray straight stream nozzle
CN204724377U (en) Multi-functional rotable hydraulic giant
CN215902001U (en) Water spraying gun
CN204293730U (en) Fire-fighting straight stream nozzle
CN219023099U (en) Multi-angle spray water gun
CN2471419Y (en) Multifunctional assembled nozzle
CN209174177U (en) A kind of single action airbrush
CN211585005U (en) Fire-fighting lance convenient for adjusting water yield
CN203695274U (en) Electric spraying gun capable of remotely spraying
CN203221042U (en) Air water dual-purpose dust blowing gun
CN107715348B (en) Fire-fighting lance
CN216173369U (en) Double-joint rotary water gun
CN220404696U (en) Water mist combined spray gun for park fire control
CN216025667U (en) Paint gun convenient to clean
CN211536297U (en) Fire-fighting blooming water gun
CN210250972U (en) Fire extinguishing apparatus high-pressure water gun head
CN218690640U (en) Handheld steel construction paint spraying apparatus

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant