CN110630163A - Escape guardrail for windowsill in building - Google Patents
Escape guardrail for windowsill in building Download PDFInfo
- Publication number
- CN110630163A CN110630163A CN201910895725.4A CN201910895725A CN110630163A CN 110630163 A CN110630163 A CN 110630163A CN 201910895725 A CN201910895725 A CN 201910895725A CN 110630163 A CN110630163 A CN 110630163A
- Authority
- CN
- China
- Prior art keywords
- connecting pipe
- frame
- pipe
- piece
- escape
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/34—Ladders attached to structures, such as windows, cornices, poles, or the like
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/52—Ladders in general with non-rigid longitudinal members
- E06C1/56—Rope or chain ladders
Abstract
The invention relates to the technical field of windowsill guardrails, in particular to an escape guardrail for a windowsill in a building. The first frame is a fixed frame, the second frame body is detachably connected with the first frame body, the inner part of the second frame is also detachably connected, and the second frame can be detached for use. Meanwhile, the safety rope is arranged inside the second frame and can turn the second frame into a survival ladder, so that people can escape from the floor where fire happens and escape to the lower side. The invention provides a design concept of converting a guardrail or an anti-theft window into an escape ladder, so as to reduce casualties of people as much as possible and reduce risks brought by fire.
Description
Technical Field
The invention relates to the technical field of windowsill guardrails, in particular to an escape guardrail for a windowsill in a building.
Background
At present, when a building is in fire, residents can only move back to a balcony or a window when the residents can not escape through evacuation stairs, but when the residents want to escape from the balcony or the window, the residents are blocked by an anti-theft window or a guardrail to escape, and thus tragedies are generated. People feel like prisons but are countless to apply.
Based on the situation, a second escape route of the existing building needs to be opened up so as to provide guarantee for life safety of people.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a second life channel, which solves the problem that a window or a balcony is provided with an anti-theft window or a guardrail to prevent escape.
In order to achieve the purpose, the invention provides the following technical scheme:
the escape guardrail comprises a first frame and a second frame, wherein the first frame and the second frame are connected through a first mounting assembly, the second frame is formed by connecting a plurality of modularized railing assemblies, and the railing assemblies are connected with each other through a second mounting assembly and a safety rope.
By adopting the technical scheme, the novel guardrail with the guardrail converted into the escape passage is provided, and the life safety of common people is guaranteed. The scheme is provided with a first frame and a second frame, wherein the first frame is a fixed frame and plays a role in basic human body interception and connection and fixation between the first frame and a wall body. The second frame body is detachably connected with the first frame body, the inner part of the second frame body is also detachably connected, and the second frame body can be detached for use. Meanwhile, the safety rope is arranged inside the second frame and can turn the second frame into a survival ladder, so that people can escape from the floor where fire happens and escape to the lower side.
Furthermore, the railing assembly comprises a first connecting pipe, a second connecting pipe and a third connecting piece, wherein two ends of the third connecting piece are respectively connected with the first connecting pipe and the second connecting pipe.
Through adopting above-mentioned technical scheme, this scheme provides the railing subassembly of the I shape that is formed by a plurality of first connecting pipes, second connecting pipe and third connecting piece. The first connecting pipe and the first connecting pipe are connected with each other, and the second connecting pipe are connected with each other, thereby forming a second frame whole.
Furthermore, the third connecting piece is a connecting plate in a flat cuboid shape, and anti-skid grains are arranged on the surfaces of the two sides of the third connecting piece.
Through adopting above-mentioned technical scheme, unpack the back apart when the second frame, can become the ladder of fleing and use, design such connecting plate this moment can be equivalent to the footboard and use, when the people flee, stable step on the footboard.
Further, the structure of first connecting pipe, second connecting pipe is the same, and both are hollow pipe, the safety rope is installed in hollow pipe and is equipped with a tubercle in a hollow pipe, the one end of first connecting pipe or second connecting pipe is the opening form, and the other end is for sealing the form.
Through adopting above-mentioned technical scheme, set up the safety rope between adjacent railing subassembly, on the one hand stringed railing subassembly, played the guard action of soft connection, on the other hand also can regard as the rope of fleing of ladder, becomes the ladder that has certain escape length with the ladder of fleing.
Furthermore, a second mounting assembly is arranged at the position, close to the pipe orifice of one end, of the first connecting pipe or the second connecting pipe, and a clamping hole matched with the second mounting assembly is arranged at the position, close to the pipe orifice of the other end, of the first connecting pipe or the second connecting pipe.
Through adopting above-mentioned technical scheme, a connected mode of quick detach is provided, lets personnel can go up to hand fast.
Further, the second installation component includes spacing hollow pipe, first spring, and the button piece, be equipped with the mounting hole on first connecting pipe or the second connecting pipe, first spring one end bonds with first connecting pipe inner wall, and the other end passes the mounting hole, and the one end tip of passing the mounting hole still is equipped with the button piece, first connecting pipe or second connecting pipe outer wall are equipped with the hollow pipe of fibre, spacing hollow pipe both ends are respectively in the inner wall welding of first connecting pipe or second connecting pipe.
Through adopting above-mentioned technical scheme, a connected mode of quick detach is provided, lets personnel can go up to hand fast. The buttons are pressed to quickly separate the adjacent railing assemblies.
Furthermore, the first mounting assembly comprises a first buckle part and a first matching part, the first frame is provided with the first buckle part at a position close to the second frame, the first matching part which is matched with the first buckle part is arranged on the railing assembly closest to the first frame, and the first buckle part is tightly connected with the first matching part.
Through adopting above-mentioned technical scheme, this scheme adopts conventional window safety latch fitting, and first buckle spare locks with first fitting piece, is connected first frame and second frame.
Further, the button of the second mounting assembly faces the ground.
Through adopting above-mentioned technical scheme, make the second installation component be difficult to discover and touch slightly.
Furthermore, a plurality of ground pins are arranged on the second frame close to the upper portion.
Through adopting above-mentioned technical scheme, the ground round pin is the fixed mode that common personnel were used commonly to make things convenient for people's quick plug, improve the security when the guardrail uses, when becoming the emergency escape ladder, can save time, extract fast can.
In conclusion, the invention has the following beneficial effects:
1. through the arrangement of the first frame, the second frame and the detachable connection of the second frame, the effect of converting a guardrail or an anti-theft window into an escape ladder can be achieved;
2. through the arrangement of the first frame, the plurality of groups of dismounting assemblies, the ground pins, the safety ropes and the like, the effect of multiple connections such as rigid connection, soft connection, reinforced connection and the like can be achieved;
3. through the setting of first installation component, second installation component, the ground round pin, can play the effect that the personnel of being convenient for discernment and launch fast.
Drawings
FIG. 1 is a schematic front view of an embodiment of the application at a window sill;
FIG. 2 is a schematic reverse view of the embodiment applied to a window sill;
FIG. 3 is a schematic view of an embodiment barrier turned into a ladder;
FIG. 4 is a schematic structural view of a second mounting assembly of the embodiment;
fig. 5 is a schematic view of the embodiment applied to a balcony.
In the figure, 1, a first frame; 2. a second frame; 3. a first mounting assembly; 4. a second mounting assembly; 5. a safety cord; 6. a first fastener; 7. a first mating member; 8. a first connecting pipe; 9. a second connecting pipe; 10. a third connecting member; 11. a clamping hole; 12. limiting the hollow round pipe; 13. a first spring; 14. a button block; 15. mounting holes; 16. and (7) a ground pin.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
as shown in fig. 1 and 2, an escape guardrail for a windowsill in a building comprises a first frame 1 and a second frame 2, wherein the first frame 1 and the second frame 2 are connected through a first mounting component 3, the second frame 2 is formed by connecting a plurality of modularized railing components, and adjacent railing components are connected through a second mounting component 4 and a safety rope 5 (see fig. 3). The embodiment is provided with a first frame 1 and a second frame 2, wherein the first frame 1 is a fixed frame and plays a role in basic human body interception and connection and fixation between the first frame and a wall body. The second frame body is detachably connected with the first frame body, the inside of the second frame body 2 is also detachably connected, and the second frame body 2 can be detached for use. Meanwhile, the safety rope 5 is arranged inside the second frame 2, and the safety rope 5 can convert the second frame 2 into a survival ladder to enable common people to escape from a fire floor and escape to the lower side.
The first frame 1 may be installed on a balcony as a guardrail or may be installed on a sill as a burglary-resisting window. Is connected to the ground or the sill by embedments or fasteners, and then the second frame 2 is installed therein.
As shown in fig. 2, the first mounting assembly 3 includes a first locking member 6 and a first mating member 7, the first locking member 6 is disposed at a position of the first frame 1 close to the second frame 2, the first mating member 7 is disposed on the rail assembly closest to the first frame 1 and is engaged with the first locking member 6, and the first locking member 6 is fastened to the first mating member 7. This scheme adopts conventional window safety latch fitting, and first buckle spare 6 locks with first fitting piece 7, is connected first frame 1 and second frame 2. This is a one-step fixing method, and the connection method is common in daily life and can be easily found and used directly in a reflective way by common people.
As shown in fig. 1 and 3, the balustrade assembly includes a first connecting tube 8, a second connecting tube 9, and a third connecting member 10 having two ends connected to the first connecting tube 8 and the second connecting tube 9, respectively. The first connecting pipe 8, the second connecting pipe 9 and the third connecting part 10 form an i-shaped rail assembly. The first connection pipe 8 and the first connection pipe 8 are connected to each other, and the second connection pipe 9 are connected to each other, thereby forming the second frame 2 as a whole. The third connecting member 10 is a flat rectangular parallelepiped connecting plate, and the surfaces of both sides of the third connecting member 10 are provided with anti-slip lines, so that the third connecting member can be used as a pedal after being converted into an escape ladder.
As shown in fig. 3, the first connection pipe 8 and the second connection pipe 9 have the same structure, and both are hollow circular pipes. The safety line 5, as a flexible connection, is preferably mounted in a hollow round tube and has a knot inside one of the hollow round tubes. One end of the first connecting pipe 8 or the second connecting pipe 9 is open, and the other end is closed. The safety line 5 thus connects several railing units in series without disengaging or sliding substantially. The length of each safety rope 5 can be 0.5 m to 1 m, and the total length of the safety rope 5 can be 3 m to 5 m according to the group number of the railing units. In this way, people can descend at least one floor, for example, from the floor where the fire occurs to the floor where the fire does not occur. Often, only this layer is needed, and rescue time can be left.
As shown in fig. 3 and 4, the second mounting component 4 is disposed at a position of the first connecting pipe 8 or the second connecting pipe 9 close to the pipe orifice of one end, and the clamping hole 11 matched with the second mounting component 4 is disposed at a position of the first connecting pipe 8 or the second connecting pipe 9 close to the pipe orifice of the other end. Second installation component 4 includes spacing hollow pipe 12, first spring 13, button piece 14, be equipped with mounting hole 15 on first connecting pipe 8 or the second connecting pipe 9, first spring 13 one end bonds with 8 inner walls of first connecting pipe, the other end passes mounting hole 15, the one end tip of passing mounting hole 15 still is equipped with button piece 14, first connecting pipe 8 or the 9 outer walls of second connecting pipe are equipped with the hollow pipe of fibre, spacing hollow pipe 12 both ends are respectively in the inner wall welding of first connecting pipe 8 or second connecting pipe 9. The button block 14 can be clamped in the clamping hole 11 to connect the adjacent railing components. The buttons of the second mounting assembly 4 are disposed towards the ground for not being easily touched by the person on a daily basis. For further reinforcement and for ease of finding and handling, the third connector 10 of the second frame 2 is also provided with a plurality of ground pins 16 near the ground or sill.
The specific implementation process comprises the following steps: the present invention can be made into an anti-theft window or a guardrail to be installed on a windowsill or a balcony (see fig. 5). In normal use, the first mounting component 3, the second mounting component 4 and the ground pin 16 are all fixedly connected to connect the first frame 1 and the second frame 2 into a whole. When a fire occurs, a person can hold the second frame 2, disassemble the first mounting assembly 3, and then pull out the bolt to pull the second frame 2 into the room. Then press down each second installation component 4 fast, each railing subassembly separation is fixed die with the fag end of the safety rope 5 of first railing subassembly looking for a firm place, throws away the emergency escape ladder, downwards in order to ask the chance of surviving of life.
The invention provides a design concept of converting a guardrail or an anti-theft window into an escape ladder, so as to reduce casualties of people as much as possible and reduce risks brought by fire. Preferably, the design can be placed at a floor common aisle or balcony.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a windowsill is with guardrail of fleing in building, includes first frame (1) and second frame (2), its characterized in that: first frame (1) and second frame (2) are connected through first installation component (3), second frame (2) are formed by connecting a plurality of modular railing subassemblies, and are adjacent connect through second installation component (4) and safety rope (5) between the railing subassembly.
2. The escape guardrail for windowsills in buildings according to claim 1, wherein: the railing assembly comprises a first connecting pipe (8), a second connecting pipe (9) and a third connecting piece (10) of which two ends are respectively connected with the first connecting pipe (8) and the second connecting pipe (9).
3. The escape guardrail for windowsills in buildings according to claim 2, wherein: the third connecting piece (10) is a connecting plate in a flat cuboid shape, and anti-skid grains are arranged on the surfaces of the two sides of the third connecting piece (10).
4. The escape guardrail for windowsills in buildings according to claim 2 or 3, wherein: the structure of first connecting pipe (8), second connecting pipe (9) is the same, and both are hollow pipe, safety rope (5) are installed in hollow pipe and are equipped with a tubercle in a hollow pipe, the one end of first connecting pipe (8) or second connecting pipe (9) is the opening form, and the other end is for sealing the form.
5. The escape guardrail for windowsills in buildings according to claim 4, wherein: the first connecting pipe (8) or the second connecting pipe (9) is provided with a second mounting component (4) at the position close to the pipe orifice of one end, and the first connecting pipe (8) or the second connecting pipe (9) is provided with a clamping hole (11) matched with the second mounting component (4) at the position close to the pipe orifice of the other end.
6. The escape guardrail for windowsills in buildings according to claim 5, wherein: second installation component (4) are including spacing hollow pipe (12), first spring (13), press the button piece (14), be equipped with mounting hole (15) on first connecting pipe (8) or second connecting pipe (9), first spring (13) one end bonds with first connecting pipe (8) inner wall, and the other end passes mounting hole (15), and the one end tip of passing mounting hole (15) still is equipped with button piece (14), first connecting pipe (8) or second connecting pipe (9) outer wall are equipped with the hollow pipe of fibre, spacing hollow pipe (12) both ends are respectively in the inner wall welding of first connecting pipe (8) or second connecting pipe (9).
7. The escape guardrail for windowsills in buildings according to claim 6, wherein: the first mounting assembly (3) comprises a first buckle piece (6) and a first matching piece (7), the first buckle piece (6) is arranged at the position, close to the second frame (2), of the first frame (1), the first matching piece (7) matched with the first buckle piece (6) is arranged on the railing assembly closest to the first frame (1), and the first buckle piece (6) is tightly connected with the first matching piece (7).
8. The escape guardrail for windowsills in buildings according to claim 7, wherein: the button of the second mounting assembly (4) faces the ground.
9. The escape guardrail for windowsills in buildings according to claim 8, wherein: the second frame (2) is also provided with a plurality of ground pins (16) close to the upper part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895725.4A CN110630163A (en) | 2019-09-21 | 2019-09-21 | Escape guardrail for windowsill in building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895725.4A CN110630163A (en) | 2019-09-21 | 2019-09-21 | Escape guardrail for windowsill in building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110630163A true CN110630163A (en) | 2019-12-31 |
Family
ID=68972061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910895725.4A Pending CN110630163A (en) | 2019-09-21 | 2019-09-21 | Escape guardrail for windowsill in building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110630163A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2675834Y (en) * | 2004-02-13 | 2005-02-02 | 李蓓蓓 | Anti-theft guard bar used as emergency escaping ladder |
| CN2916084Y (en) * | 2006-05-25 | 2007-06-27 | 李鹏 | Window guard rail capable of being used as escape ladder |
| CN201650062U (en) * | 2009-12-14 | 2010-11-24 | 陈锦财 | Fast escape burglary-resisting window |
| CN201883933U (en) * | 2010-11-19 | 2011-06-29 | 浙江师范大学 | Balcony escape device |
| CN102486076A (en) * | 2010-12-03 | 2012-06-06 | 南京农业大学 | Escape antitheft window of multistory building |
| CN103556933A (en) * | 2013-10-08 | 2014-02-05 | 沈阳建筑大学 | Multifunctional balcony protective fence |
| CN104895262A (en) * | 2015-04-30 | 2015-09-09 | 贵州华佑金属制品有限公司 | Escape guardrail and assembly method thereof |
| CN204754711U (en) * | 2015-05-08 | 2015-11-11 | 孙钰鹏 | Accessible theftproof window ladder of fleing |
| CN105854195A (en) * | 2016-05-03 | 2016-08-17 | 胡鸿 | High-rise escape device and application method thereof |
| CN105908927A (en) * | 2016-05-03 | 2016-08-31 | 翁九灵 | Handrail for high-rise building and use method of handrail |
| CN205677521U (en) * | 2016-06-08 | 2016-11-09 | 郭梓萱 | Electrical network repairing ladder |
| CN206607673U (en) * | 2017-02-24 | 2017-11-03 | 泉州拾贝电子商务有限公司 | A kind of balcony with escape structure |
| CN206647019U (en) * | 2017-04-21 | 2017-11-17 | 刘坤 | A kind of burglary-resisting window escape apparatus |
| CN207934773U (en) * | 2018-02-27 | 2018-10-02 | 王旭彤 | Folding escape Anti-theft safety window |
| CN208310652U (en) * | 2018-01-18 | 2019-01-01 | 四川农业大学 | A kind of fire disaster escaping protective fence |
| CN109915002A (en) * | 2017-12-12 | 2019-06-21 | 中国石油大学(华东) | A kind of telescopic foldable escape anti-theft window |
-
2019
- 2019-09-21 CN CN201910895725.4A patent/CN110630163A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2675834Y (en) * | 2004-02-13 | 2005-02-02 | 李蓓蓓 | Anti-theft guard bar used as emergency escaping ladder |
| CN2916084Y (en) * | 2006-05-25 | 2007-06-27 | 李鹏 | Window guard rail capable of being used as escape ladder |
| CN201650062U (en) * | 2009-12-14 | 2010-11-24 | 陈锦财 | Fast escape burglary-resisting window |
| CN201883933U (en) * | 2010-11-19 | 2011-06-29 | 浙江师范大学 | Balcony escape device |
| CN102486076A (en) * | 2010-12-03 | 2012-06-06 | 南京农业大学 | Escape antitheft window of multistory building |
| CN103556933A (en) * | 2013-10-08 | 2014-02-05 | 沈阳建筑大学 | Multifunctional balcony protective fence |
| CN104895262A (en) * | 2015-04-30 | 2015-09-09 | 贵州华佑金属制品有限公司 | Escape guardrail and assembly method thereof |
| CN204754711U (en) * | 2015-05-08 | 2015-11-11 | 孙钰鹏 | Accessible theftproof window ladder of fleing |
| CN105854195A (en) * | 2016-05-03 | 2016-08-17 | 胡鸿 | High-rise escape device and application method thereof |
| CN105908927A (en) * | 2016-05-03 | 2016-08-31 | 翁九灵 | Handrail for high-rise building and use method of handrail |
| CN205677521U (en) * | 2016-06-08 | 2016-11-09 | 郭梓萱 | Electrical network repairing ladder |
| CN206607673U (en) * | 2017-02-24 | 2017-11-03 | 泉州拾贝电子商务有限公司 | A kind of balcony with escape structure |
| CN206647019U (en) * | 2017-04-21 | 2017-11-17 | 刘坤 | A kind of burglary-resisting window escape apparatus |
| CN109915002A (en) * | 2017-12-12 | 2019-06-21 | 中国石油大学(华东) | A kind of telescopic foldable escape anti-theft window |
| CN208310652U (en) * | 2018-01-18 | 2019-01-01 | 四川农业大学 | A kind of fire disaster escaping protective fence |
| CN207934773U (en) * | 2018-02-27 | 2018-10-02 | 王旭彤 | Folding escape Anti-theft safety window |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208310652U (en) | A kind of fire disaster escaping protective fence | |
| WO2018230837A1 (en) | Fire/disaster evacuation facility for building | |
| KR20070004492A (en) | Fire suppression and life structure elevator system of skyscraper | |
| CN213450215U (en) | Outdoor emergency ladder of formula aluminum alloy folded form is climbed to two | |
| CN111794671A (en) | Outdoor emergency ladder of formula aluminum alloy folded form is climbed to list | |
| CN110630163A (en) | Escape guardrail for windowsill in building | |
| KR100613880B1 (en) | Emergency shelter device using a handrail balcony | |
| KR20130000893U (en) | rope ladder for saving human life | |
| US6789647B1 (en) | Escape mechanism for high-rise | |
| WO2022228202A1 (en) | Reciprocating high-rise escape slow descending device | |
| CN111691797A (en) | Burglary-resisting window convenient to conflagration flees and uses | |
| CN203383702U (en) | Fire safety anti-theft cage | |
| CN110124221A (en) | Escape component | |
| KR100870141B1 (en) | Gondola for escape from an unforeseen accident | |
| CN201902146U (en) | Downhill type lifesaving burglary-resisting window | |
| CN210482576U (en) | Escape assembly type building | |
| CN210888138U (en) | Old room installs flat bed elevator semi-fixed rescue passageway additional | |
| CN208533695U (en) | A kind of structural fire protection escape theft-protection system | |
| CN201574675U (en) | Security window | |
| RU73013U1 (en) | ROPE LADDER FOR RESCUE OF PEOPLE FROM BURNING MULTI-STOREYED AND ALTITUDE RESIDENTIAL HOUSES AND BUILDINGS WHEN EXTINGUISHING FIRES AND OTHER DISASTERS | |
| CN111075345A (en) | Emergency escape ladder for high-rise building fire accidents | |
| CN216240354U (en) | Anti-theft fire-fighting life-saving window | |
| CN205502946U (en) | Theftproof escape device | |
| CN203066850U (en) | Multipurpose fireproof escape ladder | |
| CN217219911U (en) | Fixing device for window sill of emergency rescue rope ladder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191231 |
|
| RJ01 | Rejection of invention patent application after publication |