CN105173035A - Lifebuoy - Google Patents
Lifebuoy Download PDFInfo
- Publication number
- CN105173035A CN105173035A CN201510608775.1A CN201510608775A CN105173035A CN 105173035 A CN105173035 A CN 105173035A CN 201510608775 A CN201510608775 A CN 201510608775A CN 105173035 A CN105173035 A CN 105173035A
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- air bag
- pricker
- recessed district
- reservoir vessel
- passage
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Abstract
The invention provides a lifebuoy. The lifebuoy is characterized in that a concave driver positioning area is arranged at one end of an inner frame; a driver is pivoted to the wall of the concave driver positioning area; a connection port is formed in the other end of the inner frame, and is fixedly connected with a compressed air storage vessel; a concave pricking pin accommodating area is arranged on the inner frame at the bottom surface of the concave driver positioning area; a passage communicated with the connection port is arranged on the bottom surface of the concave pricking pin accommodating area; a limiting step is formed between the passage and the concave pricking pin accommodating area; an air outlet is formed in the side surface of the passage, and is connected with an air inlet of an air bag; a pricking pin and a resetting device are arranged in the concave pricking pin accommodating area; the upper side of a pin cap is propped against the driver, and covers one end of the resetting device; a pin body is arranged in the presetting device in a penetrating manner; and the other end of the resetting device is propped against the limiting step. The lifebuoy has the beneficial effects that firstly, misoperation can be reduced, and triggering the pricking pin unnecessarily is avoided; secondly, the lifebuoy is easy to carry, light in weight, and suitable for being worn in outdoor activities; and thirdly, the lifebuoy is high in triggering precision, and safe and reliable.
Description
Technical field
The present invention relates to lifesaving field, a kind of portable, safety is high, the life saving air bag that maloperation is few.
Background technology
During current activity in the wild, there will be overboard grade surprisingly, cause dangerous generation, not natatory people's possibility will threat to life.During in order to solve outdoor sports, occurring that unexpected overboard can not get is rescued, and causing the problem of life danger.
Play and will carry out amusement on water in suitable for long-distance tour or field, fishing etc. needs life saving appliance to assist, but existing life-saving appliance is general larger, not portable.At present, in existing water, life saving appliance has water wing, life jacket, foamed plastic, floating ship etc., no matter is water wing, life jacket, foamed plastic or floating ship, volume is larger, not portable, or need certain inflatable appliance to assist better to use, all there is certain deficiency.Therefore, need to invent a kind of volume little, portable, and can the life saving appliance of fast aeration, use when facilitating suitable for long-distance tour or field to play.
Summary of the invention
The present invention is directed to above problem, provide a kind of portable, safety is high, the life saving air bag that maloperation is few.
Goal of the invention of the present invention is realized by following scheme: a kind of life saving air bag, comprise actuator, pricker, reset attachment, air bag and pressure gas reservoir vessel, also comprise internal frame, one end of internal frame is provided with actuator and locates recessed district, actuator is articulated in actuator and locates on recessed district wall, the internal frame other end is provided with communication port, communication port is fixedly connected with pressure gas reservoir vessel, the internal frame that actuator locates bottom surface place of recessed district is provided with the accommodating recessed district of pricker, the bottom surface in the accommodating recessed district of pricker offers the passage being communicated with communication port, the accommodating recessed district of pricker, the center-point of passage and communication port on the same axis, channel diameter is less than pricker accommodating recessed district diameter, limited step is formed between passage and the accommodating recessed district of pricker, passage side is provided with air gate, air gate runs through internal frame sidewall, and be connected with the induction opening of air bag, pricker and reset attachment are arranged in the accommodating recessed district of pricker, pricker comprises pin cap and needle body, offset with actuator on the upside of pin cap, and cover reset attachment one end, needle body is located in reset attachment, needle body is towards passage, the reset attachment other end and limited step offset.
Further, actuator comprises driving handle and drive block, drive block is positioned at driving handle one end, drive block and actuator are located recessed district and are coordinated, being entrenched in actuator locates in recessed district, by pivot joint, drive block being fixed on actuator locates in recessed district, and seamlessly transit with drive block bottom surface connecting place on the downside of the opposite face of drive block and driving handle joint face, drive block height is less than the width in the accommodating recessed district of pricker.
Further, pricker is also provided with sealing silica gel in accommodating recessed district, and sealing silica gel transverse and longitudinal face is N-shaped, and lower surface is that ring-type covers limited step, and N-shaped sealing silica gel covers pricker and reset attachment.
Further, pricker accommodating recessed district inwall is provided with screw thread, and nut and screw thread fit knob are in the accommodating recessed district of pricker, and nut cover outside sealing silica gel, and accompanies sealing silica gel lower surface between nut and limited step.
Further, reset attachment is Compress Spring, is also provided with a location ladder chimeric with Compress Spring internal diameter below the pin cap of pricker, and the pin cap of pricker is circular, and radius is large compared with the radius of Compress Spring, and is entrenched in the accommodating recessed district of pricker; At least comparatively passage length is long for the needle body length of pricker, and needle body is located in reset attachment and passage, and needle body front end is tip, and needle body is provided with the air bleed slot of one connection tip.
Further, the radius of the pin cap of pricker is less than pricker accommodating recessed district internal diameter, and close to pricker accommodating recessed district internal diameter; The external diameter of Compress Spring is greater than the internal diameter of passage, and needle body is entrenched in passage, and needle body is provided with the air bleed slot of some connection tips, has one air bleed slot at least through air gate.
Further, also comprise air bag box, air bag box is provided with internal frame hold down groove, air bag places cavity and reservoir vessel mounting hole, air bag box bottom surface is cambered surface, air bag box bottom surface is provided with wrist strap, one end of air bag box is provided with internal frame hold down groove, the other end is provided with reservoir vessel mounting hole, air bag is placed cavity and is located at internal frame hold down groove side, air bag is placed cavity and is provided with the airbag cover covering air bag placement cavity, airbag cover side and air bag box hinged, opposite side two ends are provided with projection, the relevant position of air bag box respective protrusions is provided with the recessed district with male cooperation, protruding and recessed district coordinates, reservoir vessel mounting hole one end is connected with the communication port of internal frame, the other end and pressure gas reservoir vessel are tightly connected.
Further, air bag box is provided with the extension of air bag box outside reservoir vessel mounting hole, extension forms a cavity, reservoir vessel lid is laid below cavity, reservoir vessel lid is wine dipper shape, the handle upper end of wine dipper shape is provided with buckle, reservoir vessel lid snaps onto on air bag box by buckle, reservoir vessel lid host cavity is formed with the cavity of air bag box, pressure gas reservoir vessel is connected to reservoir vessel mounting hole place, pressure gas reservoir vessel is placed in reservoir vessel lid host cavity, air bag box and wrist strap skin coating noctilucence layer.
Further, described pressure gas reservoir vessel is air collector, internal gas is carbon dioxide, air collector air extractor duct place is provided with sealing film, sandwiched gasket seal between the communication port of internal frame and air collector, and gasket seal is circular, communication port and air collector mouth center are aimed at by circle ring center, be circular drops during airbag aeration, be provided with an induction opening, air bag applies noctilucence layer outward.
Further, driving handle has chimeric recessed district near the position of free end, and guide box for needle or pin is chimeric to be arranged in chimeric recessed district.
Beneficial effect of the present invention is: one is to reduce maloperation, avoids when unnecessary, triggers pricker; Two is easily carry, lightweight, wears when being applicable to outdoor sports; Three is that triggering precision is high, safe and reliable.
Accompanying drawing explanation
Fig. 1 is exploded view one of the present invention.
Fig. 2 is the structural representation of pricker.
Fig. 3 is the structural representation of internal frame.
Fig. 4 is exploded view two of the present invention.
Fig. 5 is structural representation of the present invention.
Fig. 6 is using state figure of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the invention will be further described:
Shown in accompanying drawing 1-6, the present invention: a kind of life saving air bag, comprise actuator 1, pricker 5, reset attachment 6, air bag 15 and pressure gas reservoir vessel 13, also comprise internal frame 7, one end of internal frame 7 is provided with actuator and locates recessed district 71, actuator 1 is articulated in actuator and locates on recessed district 71 wall, internal frame 7 other end is provided with communication port 74, communication port 74 is fixedly connected with pressure gas reservoir vessel 13, the internal frame 7 that actuator locates bottom surface place of recessed district 71 is provided with the accommodating recessed district 72 of pricker, the bottom surface in the accommodating recessed district 72 of pricker offers the passage 73 being communicated with communication port 74, the accommodating recessed district 72 of pricker, the center-point of passage 73 and communication port 74 on the same axis, passage 73 diameter is less than pricker accommodating recessed district 72 diameter, limited step 75 is formed between passage 73 and the accommodating recessed district 72 of pricker, passage 73 side is provided with air gate 76, air gate 76 runs through internal frame sidewall, and be connected with the induction opening of air bag 15, pricker 5 and reset attachment 6 are arranged in the accommodating recessed district 72 of pricker, pricker 5 comprises pin cap 51 and needle body 53, offset with actuator 1 on the upside of pin cap 51, and cover reset attachment 6 one end, needle body 53 is located in reset attachment 6, needle body 53 is towards passage 73, needle body 53 and passage 73 center are on same axle, reset attachment 6 other end and limited step 75 offset.Make pricker 5 easily and accurately can open pressure gas reservoir vessel 13, but contracting gas storage container 13 can not be poked when touching because of carelessness again, reduce unnecessary maloperation, reduce the airbag-releasing time.
In order to the position of pricker 5 and pressure gas reservoir vessel 13 air extractor duct better can be located, avoid occurring maloperation, improve its safety, reduce air bag 15 opening time; A kind of life saving air bag, actuator 1 comprises driving handle and drive block 18, drive block 18 is positioned at driving handle one end, drive block 18 and actuator are located recessed district 71 and are coordinated, being entrenched in actuator locates in recessed district 71, by pin 16 pivot joint, drive block 18 being fixed on actuator locates in recessed district 71, and seamlessly transit with drive block 18 bottom surface connecting place on the downside of drive block 18 and the opposite face of driving handle joint face, drive block 18 is highly less than the width in the accommodating recessed district 72 of pricker.
In order to improve leak tightness of the present invention, its table being extended, and improves safety performance; A kind of life saving air bag, the accommodating recessed district 72 of pricker is also provided with sealing silica gel 4, and sealing silica gel 4 transverse and longitudinal face is N-shaped, and lower surface is that ring-type covers limited step 75, and N-shaped sealing silica gel 4 covers pricker 5 and reset attachment 6.
In order to improve result of use of the present invention and operating cycles, a kind of life saving air bag, pricker accommodating recessed district 72 inwall is provided with screw thread, nut 3 and screw thread fit knob are in the accommodating recessed district 72 of pricker, nut 3 covers on outside sealing silica gel 4, and accompanies between nut 3 and limited step 75 and seal silica gel 4 lower surface.
In order to further locate the position of pricker 5 and pressure gas reservoir vessel 13 air extractor duct, avoiding occurring maloperation, improving its safety, reduce air bag 15 opening time; A kind of life saving air bag, reset attachment 6 is Compress Spring, is also provided with a location ladder 52 chimeric with Compress Spring internal diameter below the pin cap 51 of pricker 5, and the pin cap 51 of pricker 5 is circular, radius is large compared with the radius of Compress Spring, and is entrenched in the accommodating recessed district 72 of pricker; At least comparatively passage 73 length is long for needle body 53 length of pricker 5, needle body 53 is located in reset attachment 6 and passage 73, and needle body 53 front end is tip 55, tip 55 is near pressure gas reservoir vessel air extractor duct, and needle body 53 is provided with the air bleed slot 54 of one connection tip 55.
In order to further locate the position of pricker 5 and pressure gas reservoir vessel 13 air extractor duct, avoiding occurring maloperation, improving its safety, reduce air bag 15 opening time; A kind of life saving air bag, the radius of the pin cap 51 of pricker 5 is less than pricker accommodating recessed district 72 internal diameter, and close to pricker accommodating recessed district 72 internal diameter; The external diameter of Compress Spring is greater than the internal diameter of passage 73, and needle body 53 is entrenched in passage 73, and needle body 53 is provided with the air bleed slot 54 of some connection tips, has one air bleed slot 54 at least through air gate 76.
In order to be that the present invention is easy to carry and installs, reduce to use mistiming to hurt the possibility of user, improve safety, a kind of life saving air bag, also comprise air bag box 11, air bag box 11 is provided with internal frame hold down groove 19, air bag places cavity 8 and reservoir vessel mounting hole 9, air bag box 11 bottom surface is cambered surface, air bag box 11 bottom surface is provided with wrist strap 12, one end of air bag box 11 is provided with internal frame hold down groove 19, the other end is provided with reservoir vessel mounting hole 9, air bag is placed cavity 8 and is located at internal frame hold down groove 19 side, air bag is placed cavity 8 and is provided with the airbag cover 2 covering air bag placement cavity 8, airbag cover 2 side and air bag box 11 hinged, opposite side two ends are provided with projection, the relevant position of air bag box 11 respective protrusions is provided with the recessed district with male cooperation, protruding and recessed district coordinates, reservoir vessel mounting hole 9 one end is connected with the communication port 74 of internal frame 7, the other end and pressure gas reservoir vessel 13 are tightly connected.
In order to improve safety of the present invention, being extended its table, reducing because the stressed displacement of pressure gas reservoir vessel is leaked gas, a kind of life saving air bag, air bag box 11 is provided with the extension of air bag box 11 outside reservoir vessel mounting hole 9, extension forms a cavity, reservoir vessel lid 14 is laid below cavity, reservoir vessel lid 14 is wine dipper shape, the handle upper end of wine dipper shape is provided with buckle, reservoir vessel lid 14 snaps onto on air bag box 11 by buckle, reservoir vessel lid host cavity is formed with the cavity of air bag box 11, pressure gas reservoir vessel 13 is connected to reservoir vessel mounting hole 9 place, pressure gas reservoir vessel 13 is placed in reservoir vessel lid host cavity, air bag box 11 and wrist strap 12 skin coating noctilucence layer.
In order to improve leak tightness of the present invention, its table is extended, and improve safety performance, a kind of life saving air bag, described pressure gas reservoir vessel 13 is air collector, internal gas is carbon dioxide, air collector air extractor duct place is provided with sealing film, sandwiched gasket seal 10 between the communication port 74 of internal frame 7 and air collector, gasket seal 10 is circular, communication port 74 and air collector mouth center are aimed at by circle ring center, it is circular drops when air bag 15 is inflated, be provided with an induction opening, noctilucence layer is applied outside air bag 15, outer is provided with outside air bag induction opening, air gate 76 wall of internal frame 7 is provided with screw thread, nut and screw thread fit knob are in the air gate 76 of internal frame 7, nut cover is outside air bag 15 induction opening, and accompany air bag 15 induction opening outer between nut and internal frame 7 sidewall.
During in order to use, provide the function of sensing in the wild, avoid getting lost, a kind of life saving air bag, driving handle has chimeric recessed district near the position of free end, and guide box for needle or pin 17 is chimeric to be arranged in chimeric recessed district.
In order to improve the inflation effect of air bag, improve the leak tightness of this device, gas collection Jar opening sealer, air collector mouth place is provided with the pipeline that is stretched into air collector.
A kind of life saving air bag, pricker is draw point.
Although the present invention has illustrated by reference to preferred embodiment and has described, those of ordinary skill in the art should understand, and can be not limited to the description of above-described embodiment, in the scope of claims, can make the various changes in form and details.
Claims (10)
1. a life saving air bag, comprise actuator, pricker, reset attachment, air bag and pressure gas reservoir vessel, it is characterized in that: also comprise internal frame, one end of internal frame is provided with actuator and locates recessed district, actuator is articulated in actuator and locates on recessed district wall, the internal frame other end is provided with communication port, communication port is fixedly connected with pressure gas reservoir vessel, the internal frame that actuator locates bottom surface place of recessed district is provided with the accommodating recessed district of pricker, the bottom surface in the accommodating recessed district of pricker offers the passage being communicated with communication port, the accommodating recessed district of pricker, the center-point of passage and communication port on the same axis, channel diameter is less than pricker accommodating recessed district diameter, limited step is formed between passage and the accommodating recessed district of pricker, passage side is provided with air gate, air gate runs through internal frame sidewall, and be connected with the induction opening of air bag, pricker and reset attachment are arranged in the accommodating recessed district of pricker, pricker comprises pin cap and needle body, offset with actuator on the upside of pin cap, and cover reset attachment one end, needle body is located in reset attachment, needle body is towards passage, the reset attachment other end and limited step offset.
2. life saving air bag according to claim 1, it is characterized in that: actuator comprises driving handle and drive block, drive block is positioned at driving handle one end, drive block and actuator are located recessed district and are coordinated, being entrenched in actuator locates in recessed district, by pivot joint, drive block being fixed on actuator locates in recessed district, and seamlessly transit with drive block bottom surface connecting place on the downside of the opposite face of drive block and driving handle joint face, drive block height is less than the width in the accommodating recessed district of pricker.
3. life saving air bag according to claim 1, is characterized in that: described pricker is also provided with sealing silica gel in accommodating recessed district, and sealing silica gel transverse and longitudinal face is N-shaped, and lower surface is that ring-type covers limited step, and N-shaped sealing silica gel covers pricker and reset attachment.
4. life saving air bag according to claim 3, it is characterized in that: described pricker accommodating recessed district inwall is provided with screw thread, nut and screw thread fit knob are in the accommodating recessed district of pricker, and nut cover outside sealing silica gel, and accompanies sealing silica gel lower surface between nut and limited step.
5. life saving air bag according to claim 1, it is characterized in that: described reset attachment is Compress Spring, a location ladder chimeric with Compress Spring internal diameter is also provided with below the pin cap of pricker, the pin cap of pricker is circular, radius is large compared with the radius of Compress Spring, and is entrenched in the accommodating recessed district of pricker; At least comparatively passage length is long for the needle body length of pricker, and needle body is located in reset attachment and passage, and needle body front end is tip, and needle body is provided with the air bleed slot of one connection tip.
6. life saving air bag according to claim 5, is characterized in that: the radius of the pin cap of described pricker is less than pricker accommodating recessed district internal diameter, and close to pricker accommodating recessed district internal diameter; The external diameter of Compress Spring is greater than the internal diameter of passage, and needle body is entrenched in passage, and needle body is provided with the air bleed slot of some connection tips, has one air bleed slot at least through air gate.
7. life saving air bag according to claim 1, it is characterized in that: also comprise air bag box, air bag box is provided with internal frame hold down groove, air bag places cavity and reservoir vessel mounting hole, air bag box bottom surface is cambered surface, air bag box bottom surface is provided with wrist strap, one end of air bag box is provided with internal frame hold down groove, the other end is provided with reservoir vessel mounting hole, air bag is placed cavity and is located at internal frame hold down groove side, air bag is placed cavity and is provided with the airbag cover covering air bag placement cavity, airbag cover side and air bag box hinged, opposite side two ends are provided with projection, the relevant position of air bag box respective protrusions is provided with the recessed district with male cooperation, protruding and recessed district coordinates, reservoir vessel mounting hole one end is connected with the communication port of internal frame, the other end and pressure gas reservoir vessel are tightly connected.
8. life saving air bag according to claim 7, it is characterized in that: air bag box is provided with the extension of air bag box outside reservoir vessel mounting hole, extension forms a cavity, reservoir vessel lid is laid below cavity, reservoir vessel lid is wine dipper shape, the handle upper end of wine dipper shape is provided with buckle, reservoir vessel lid snaps onto on air bag box by buckle, reservoir vessel lid host cavity is formed with the cavity of air bag box, pressure gas reservoir vessel is connected to reservoir vessel mounting hole place, pressure gas reservoir vessel is placed in reservoir vessel lid host cavity, air bag box and wrist strap skin coating noctilucence layer.
9. life saving air bag according to claim 1, it is characterized in that: described pressure gas reservoir vessel is air collector, internal gas is carbon dioxide, air collector air extractor duct place is provided with sealing film, sandwiched gasket seal between the communication port of internal frame and air collector, gasket seal is circular, and communication port and air collector mouth center are aimed at by circle ring center, be circular drops during airbag aeration, be provided with an induction opening; Air bag applies noctilucence layer outward.
10. life saving air bag according to claim 1, is characterized in that: described driving handle has chimeric recessed district near the position of free end, and guide box for needle or pin is chimeric to be arranged in chimeric recessed district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510608775.1A CN105173035B (en) | 2015-09-22 | 2015-09-22 | A kind of life saving air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510608775.1A CN105173035B (en) | 2015-09-22 | 2015-09-22 | A kind of life saving air bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105173035A true CN105173035A (en) | 2015-12-23 |
| CN105173035B CN105173035B (en) | 2017-08-29 |
Family
ID=54895621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510608775.1A Active CN105173035B (en) | 2015-09-22 | 2015-09-22 | A kind of life saving air bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105173035B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224558A (en) * | 2016-08-04 | 2016-12-14 | 杭州亨玛电力科技有限公司 | A kind of fast aeration sealing device |
| CN114537238A (en) * | 2022-03-09 | 2022-05-27 | 辽宁机电职业技术学院 | Emergency treatment device for automobile falling into water and breaking window and implementation method thereof |
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| CN1621278A (en) * | 2003-11-24 | 2005-06-01 | 烨昆实业有限公司 | Lifesaving air bag starting structure |
| CN2897819Y (en) * | 2006-02-21 | 2007-05-09 | 邓冀贤 | Emergent overwater hidden watch-style life-saving apparatus |
| CN201116628Y (en) * | 2007-11-15 | 2008-09-17 | 厦门市神手科技有限公司 | Hand valve |
| CN101725824A (en) * | 2009-11-23 | 2010-06-09 | 陈立德 | Wedge-shaped pulley extruded inflatable tank |
| CN103909893A (en) * | 2014-03-24 | 2014-07-09 | 丁兆连 | Multifunctional life preserver |
| CN104590509A (en) * | 2014-12-10 | 2015-05-06 | 宁波一舟精密机械制造有限公司 | Underwater life-saving device |
| US20150225048A1 (en) * | 2014-02-11 | 2015-08-13 | William Lee | Inflator |
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2015
- 2015-09-22 CN CN201510608775.1A patent/CN105173035B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1621278A (en) * | 2003-11-24 | 2005-06-01 | 烨昆实业有限公司 | Lifesaving air bag starting structure |
| CN2897819Y (en) * | 2006-02-21 | 2007-05-09 | 邓冀贤 | Emergent overwater hidden watch-style life-saving apparatus |
| CN201116628Y (en) * | 2007-11-15 | 2008-09-17 | 厦门市神手科技有限公司 | Hand valve |
| CN101725824A (en) * | 2009-11-23 | 2010-06-09 | 陈立德 | Wedge-shaped pulley extruded inflatable tank |
| US20150225048A1 (en) * | 2014-02-11 | 2015-08-13 | William Lee | Inflator |
| CN103909893A (en) * | 2014-03-24 | 2014-07-09 | 丁兆连 | Multifunctional life preserver |
| CN104590509A (en) * | 2014-12-10 | 2015-05-06 | 宁波一舟精密机械制造有限公司 | Underwater life-saving device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224558A (en) * | 2016-08-04 | 2016-12-14 | 杭州亨玛电力科技有限公司 | A kind of fast aeration sealing device |
| CN114537238A (en) * | 2022-03-09 | 2022-05-27 | 辽宁机电职业技术学院 | Emergency treatment device for automobile falling into water and breaking window and implementation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105173035B (en) | 2017-08-29 |
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Effective date of registration: 20200710 Address after: No.8 Xinchang Road, Weihai Lingang Economic and Technological Development Zone, Weihai City, Shandong Province Patentee after: Weihai Zhongcheng outdoor products Co., Ltd Address before: Yongjia County of Wenzhou City, Zhejiang province 325114 Sheng Zhen Xi Lu Cun crane Patentee before: Zhou Zhike |
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