CA2808984A1 - Trampoline - Google Patents
Trampoline Download PDFInfo
- Publication number
- CA2808984A1 CA2808984A1 CA 2808984 CA2808984A CA2808984A1 CA 2808984 A1 CA2808984 A1 CA 2808984A1 CA 2808984 CA2808984 CA 2808984 CA 2808984 A CA2808984 A CA 2808984A CA 2808984 A1 CA2808984 A1 CA 2808984A1
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- CA
- Canada
- Prior art keywords
- net
- springs
- main frame
- jumping mat
- periphery
- 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.)
- Abandoned
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- Woven Fabrics (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The present invention relates to a safer trampoline, comprises a main frame, a jumping mat, a number of springs, a net, a number of enclosure poles, and a number of legs. The main frame surrounds the periphery of the jumping mat, both are fixed by a plurality of springs, several V-ring locking systems are defined between the springs and the jumping mat, further, a top ring system is included and installed on top of the enclosure poles to fix the net. Moreover, a padding covered on the springs may be used and fixed with the periphery of the main frame. There are at least six enclosure poles, which are located equidistantly and vertically on the main frame, the top of the net is fixed on top of the enclosure poles, meanwhile, the bottom of the net surrounds the periphery of the jumping mat and positioned by the V-ring locking system, the legs are assembled on the bottom of the main frame. As the bottom of the net directly connects and surrounds the periphery of the jumping mat, the present invention prevents the trampoline user from stepping on the padding or springs, so as to avoid being injured or hurt by said springs.
Description
TRAMPOLINE
BACKGROUND OF THE INVENTION
Field of the Invention The present invention relates to a trampoline, particularly a new type of trampoline.
Description of the Related Art Trampoline which also known as rebounder comes with various sizes and shapes, such as round-shape, square-shape, or hexagon-shape, usually comprises jumping mat, supporting frames. The supporting frame usually comprises a main frame, number of springs, a number of legs and other components, the springs link and surround the hooks of the jumping mat and holes of the main frame to form the main structure, wherein said hooks are defined on the edges of the jumping mat, and the holes are defined on the main frame. Ordinarily, configuration of the main frame matches up with the jumping mat. Both the main frame and jumping mat are round-shaped. Since the diameter of the main frame is bigger than that of the jumping mat, the springs between the jumping mat and main frame would make the jumping mat tightened.
Similarly, when the jumping mat is rectangular, the main frame is generally a rectangular-shaped ring. In all examples as described above, the legs requires to be supported on the level. Atypical trampoline usually comprise a plurality of tubular components which are installed together to build up the specific structure of the legs. The legs made of a single tube can be U-shaped or W-shaped, the vertical portion of the U-shape or the W-shape structure exactly forms the legs. As to the U-shape structure, the curved portion and the ground or the floor provides the supporting, the curved portion of the W-shaped structure can also achieve the same result.
In the prior art, a padding is also covered on the gap between the jumping mat and the main frame, so as to prevent the users from stepping on the padding or springs. This also prevents user from injury during climbing up and downs, or stepping out of the trampoline. The users are often advised to jump only at the center of the jumping mat and for only one person at the same time. Though, as the trampoline becomes more and more popular, such problems still exist. To solve the problem, nets are added on some of the trampolines and installed on the posts extending from the main frame, configuration of the net and the periphery of the main frame is quite similar. Circular paddings are often used on the gap between the inside of the main frame and the jumping mat to reduce injuries, accident still occurs unavoidably when the users fall off or step on the paddings.
The springs below the padding injure the user.
The trampolines of the prior art composed of different components. As the springs and the jumping mat are joined by metal rings, it's easy to disconnect each other due to high frequency use and strenuous exercise, which may cause a potential risk for trampoline users.
SUMMARY OF THE PRESENT INVENTION
The object of the present invention is to provide a safer trampoline.
The present invention is achieved by the following solutions:
A trampoline comprises a main frame, a jumping mat, a number of springs, a number of legs, a net, and a number of enclosure poles; the main frame surrounds the periphery of the jumping mat, both are fixed by a plurality of springs, several V-ring locking systems are defined between the spring and the jumping mat, so as to connect with the spring, the jumping mat and the net; at least six enclosure poles, and located equidistantly and vertically on the main frame; the top of the net is fixed on the top of the enclosure poles, meanwhile, the bottom of the net surrounds the periphery of the jumping mat and positioned by the V-ring locking system; the legs are assembled on the bottom of the main frame.
BACKGROUND OF THE INVENTION
Field of the Invention The present invention relates to a trampoline, particularly a new type of trampoline.
Description of the Related Art Trampoline which also known as rebounder comes with various sizes and shapes, such as round-shape, square-shape, or hexagon-shape, usually comprises jumping mat, supporting frames. The supporting frame usually comprises a main frame, number of springs, a number of legs and other components, the springs link and surround the hooks of the jumping mat and holes of the main frame to form the main structure, wherein said hooks are defined on the edges of the jumping mat, and the holes are defined on the main frame. Ordinarily, configuration of the main frame matches up with the jumping mat. Both the main frame and jumping mat are round-shaped. Since the diameter of the main frame is bigger than that of the jumping mat, the springs between the jumping mat and main frame would make the jumping mat tightened.
Similarly, when the jumping mat is rectangular, the main frame is generally a rectangular-shaped ring. In all examples as described above, the legs requires to be supported on the level. Atypical trampoline usually comprise a plurality of tubular components which are installed together to build up the specific structure of the legs. The legs made of a single tube can be U-shaped or W-shaped, the vertical portion of the U-shape or the W-shape structure exactly forms the legs. As to the U-shape structure, the curved portion and the ground or the floor provides the supporting, the curved portion of the W-shaped structure can also achieve the same result.
In the prior art, a padding is also covered on the gap between the jumping mat and the main frame, so as to prevent the users from stepping on the padding or springs. This also prevents user from injury during climbing up and downs, or stepping out of the trampoline. The users are often advised to jump only at the center of the jumping mat and for only one person at the same time. Though, as the trampoline becomes more and more popular, such problems still exist. To solve the problem, nets are added on some of the trampolines and installed on the posts extending from the main frame, configuration of the net and the periphery of the main frame is quite similar. Circular paddings are often used on the gap between the inside of the main frame and the jumping mat to reduce injuries, accident still occurs unavoidably when the users fall off or step on the paddings.
The springs below the padding injure the user.
The trampolines of the prior art composed of different components. As the springs and the jumping mat are joined by metal rings, it's easy to disconnect each other due to high frequency use and strenuous exercise, which may cause a potential risk for trampoline users.
SUMMARY OF THE PRESENT INVENTION
The object of the present invention is to provide a safer trampoline.
The present invention is achieved by the following solutions:
A trampoline comprises a main frame, a jumping mat, a number of springs, a number of legs, a net, and a number of enclosure poles; the main frame surrounds the periphery of the jumping mat, both are fixed by a plurality of springs, several V-ring locking systems are defined between the spring and the jumping mat, so as to connect with the spring, the jumping mat and the net; at least six enclosure poles, and located equidistantly and vertically on the main frame; the top of the net is fixed on the top of the enclosure poles, meanwhile, the bottom of the net surrounds the periphery of the jumping mat and positioned by the V-ring locking system; the legs are assembled on the bottom of the main frame.
The V-ring locking system has a V-shaped ring, one end of said V-shaped ring stitching tightly at the periphery of the jumping mat, the other end connects with the springs, spring connecting holes are defined at the bottom of the net, which has the same quantities as the springs, so that said springs connects both of the jumping mat and the net to be fixed.
As the bottom of the net directly connects to and surrounds the periphery of the jumping mat by the V-ring locking system, the present invention can prevent the trampoline users from stepping on the padding between the jumping mat and the main frame, so as to avoid being injured or hurt by said springs.
Alternatively, a padding can be covered on the gap between the main frame and the jumping mat to reduce the possibilities of being injured while stepping on the springs.
Optionally and more appropriately, a top ring system is installed at the top of the enclosure poles, the top ring system comprises a top body and the top connecting portion, the top body is made of elastic fiber rods, and embedded in the track of the top connecting portion, a hollow portion used for inserting the enclosure pole is formed at the bottom of the top connecting portion, so that the net hangs over the top body along the enclosure poles.
Alternatively, the net is fixed on the top of the top body by hook and loop tapes when the net hangs over the top body, so it is easy to assemble or disassemble the net and the enclosure pole.
It is still easy for the users to step on the lower part of the net. In order to reinforce that part, said net further comprises a safety web on its bottom part as an extra cross-shaped stitch to reinforce the net.
Obviously, the trampoline of the present invention is safer and more convenient.
BRIEF DESCRIPTION OF THE DRAWINGS
The drawings are chosen and described in order to explain the principles of the invention and their practical application so as to teach others skilled in the art to utilize the invention and various embodiments and with various modifications. The drawings are a part of the invention but not any restriction to the scope of the claims.
FIG. 1 is a three-dimensional view of the present invention;
FIG. 2 is a three-dimensional view of the present invention with padding assembled;
FIG. 3 is a detailed drawing of the mating of a number of springs and the jumping mat;
FIG. 4 is a cross-sectional side view of one of the enclosure pole of the present invention;
FIG. 5 is a front view of the net of the present invention;
FIG. 6 is an assembling view of the top cap system and the net of the present invention.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
The present invention is more particularly described in the following examples that are intended as illustrative only since numerous modifications and variations therein will be apparent to those skilled in the art. Various embodiments of the invention are now described in detail. Moreover, titles or subtitles may be used in the specification for the convenience of a reader, which shall have no influence on the scope of the present invention.
Embodiment 1:
As shown in FIG. 1, a new type of trampoline comprises a main frame 120, a jumping mat 110, a number of springs 130, a net 150, a number of enclosure poles 140 and a number of legs 160. The number of legs 160 is assembled at the bottom of the main frame 120, the main frame 120 surrounds the periphery of the jumping mat 110, and are fixed by a plurality of springs 130. There are eight enclosure poles and are installed equidistantly and vertically on the main frame 120. The top of the net 150 is fixed on the top of said enclosure poles 140, meanwhile, the bottom of the net 150 surrounds the periphery of the jumping mat 110, and locked by a V-ring locking system. The main frame 120 encircles the jumping mat 110, and is fixed by a plurality of springs 130.
There are several V-ring locking systems between the springs 130 and the jumping mat 110 so as to connect springs 130, jumping mat 110 and the net 150.
Embodiment 2:
Refer to FIGS. 2 to 5, the trampoline of a second embodiment of the present invention comprise a main frame 120, a jumping mat 110, a number of springs 130, a net 150, a number of enclosure poles 140 and a number of legs 160. The legs 160 is assembled at the bottom of the main frame 120, the main frame 120 surrounds the periphery of the padding 110, and fixed by a plurality of springs 130. There are eight enclosure poles 140 and are installed equidistantly and vertically on the main frame 120. The top of the net 150 is fixed on the top of the said enclosure pole 140, meanwhile, the bottom of the net 150 surrounds the periphery of the jumping mat 110, and locked by a V-ring locking system. The main frame 120 encircles the jumping mat 110, and is fixed by a plurality of springs 130. There are several V-ring locking systems between the springs 130 and the jumping mat 110, which connect springs 130, jumping mat 110 and the net 150.
The V-ring locking system has a V-shaped ring 111, one end of the V-shaped ring 111 is stitched tightly at the periphery of the jumping mat 110, the other end connects with the springs 130. Spring connecting holes 152 are defined at the bottom of the net 150, which has the same quantities as the springs 130. At the same time, the springs 130 connects the jumping mat 110 and the net 150 to be fixed.
Embodiment 3:
As shown in FIG. 2 and 4, the difference between the third embodiment and the above embodiment is that, further comprise an alternative padding 170, covering the gap between the main frame 120 and the jumping mat 110.
Embodiment 4:
Refer to FIGS. 1 to 5, the difference between the fourth and the above embodiment is that a top ring system is included on the top of the said enclosure poles 140.
The top ring system comprises a top body 154 and a top connecting portion 141, the top body 154 is made of elastic fiber rods, and is embedded in the track 142 of the top connecting portion 141. A hollow portion used for inserting the said enclosure pole 140 is formed at the bottom of the top connecting portion 141, so that the net 150 hangs over the top body 154 along the said enclosure pole 140, which is pleasing to eye, neat, safer, and easier to assemble or disassemble.
Embodiment 5:
Refer to FIGS. 1 to 5, the difference between the fifth embodiment and the fourth embodiment is that, alternatively, on the top of the net 150, the top body 154 is fixed on the top of said enclosure poles 140 by hoop and loop tapes 151, and the main body of the net 150 is fixed on the enclosure poles, so that the net 150 and the said enclosure poles 140 becomes more beautiful, more safer, more tidier and easier to assemble or disassemble.
Embodiment 6:
As shown in FIG. 2, except as described above, safety web 153 made at the lower part of the net 150 as an extra cross-shaped reinforcing stitch to reinforce the net to avoid shocking its lower part.
Also emphasized, there are many way of strengthening, primarily, cross-shaped or any webbing-shaped reinforcing nettings are preferred, which are also included in the claimed scope of the present invention.
The embodiments are chosen and described in order to explain the principles of the invention and their practical application so as to activate others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present invention pertains without departing from its spirit and scope. Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein.
As the bottom of the net directly connects to and surrounds the periphery of the jumping mat by the V-ring locking system, the present invention can prevent the trampoline users from stepping on the padding between the jumping mat and the main frame, so as to avoid being injured or hurt by said springs.
Alternatively, a padding can be covered on the gap between the main frame and the jumping mat to reduce the possibilities of being injured while stepping on the springs.
Optionally and more appropriately, a top ring system is installed at the top of the enclosure poles, the top ring system comprises a top body and the top connecting portion, the top body is made of elastic fiber rods, and embedded in the track of the top connecting portion, a hollow portion used for inserting the enclosure pole is formed at the bottom of the top connecting portion, so that the net hangs over the top body along the enclosure poles.
Alternatively, the net is fixed on the top of the top body by hook and loop tapes when the net hangs over the top body, so it is easy to assemble or disassemble the net and the enclosure pole.
It is still easy for the users to step on the lower part of the net. In order to reinforce that part, said net further comprises a safety web on its bottom part as an extra cross-shaped stitch to reinforce the net.
Obviously, the trampoline of the present invention is safer and more convenient.
BRIEF DESCRIPTION OF THE DRAWINGS
The drawings are chosen and described in order to explain the principles of the invention and their practical application so as to teach others skilled in the art to utilize the invention and various embodiments and with various modifications. The drawings are a part of the invention but not any restriction to the scope of the claims.
FIG. 1 is a three-dimensional view of the present invention;
FIG. 2 is a three-dimensional view of the present invention with padding assembled;
FIG. 3 is a detailed drawing of the mating of a number of springs and the jumping mat;
FIG. 4 is a cross-sectional side view of one of the enclosure pole of the present invention;
FIG. 5 is a front view of the net of the present invention;
FIG. 6 is an assembling view of the top cap system and the net of the present invention.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
The present invention is more particularly described in the following examples that are intended as illustrative only since numerous modifications and variations therein will be apparent to those skilled in the art. Various embodiments of the invention are now described in detail. Moreover, titles or subtitles may be used in the specification for the convenience of a reader, which shall have no influence on the scope of the present invention.
Embodiment 1:
As shown in FIG. 1, a new type of trampoline comprises a main frame 120, a jumping mat 110, a number of springs 130, a net 150, a number of enclosure poles 140 and a number of legs 160. The number of legs 160 is assembled at the bottom of the main frame 120, the main frame 120 surrounds the periphery of the jumping mat 110, and are fixed by a plurality of springs 130. There are eight enclosure poles and are installed equidistantly and vertically on the main frame 120. The top of the net 150 is fixed on the top of said enclosure poles 140, meanwhile, the bottom of the net 150 surrounds the periphery of the jumping mat 110, and locked by a V-ring locking system. The main frame 120 encircles the jumping mat 110, and is fixed by a plurality of springs 130.
There are several V-ring locking systems between the springs 130 and the jumping mat 110 so as to connect springs 130, jumping mat 110 and the net 150.
Embodiment 2:
Refer to FIGS. 2 to 5, the trampoline of a second embodiment of the present invention comprise a main frame 120, a jumping mat 110, a number of springs 130, a net 150, a number of enclosure poles 140 and a number of legs 160. The legs 160 is assembled at the bottom of the main frame 120, the main frame 120 surrounds the periphery of the padding 110, and fixed by a plurality of springs 130. There are eight enclosure poles 140 and are installed equidistantly and vertically on the main frame 120. The top of the net 150 is fixed on the top of the said enclosure pole 140, meanwhile, the bottom of the net 150 surrounds the periphery of the jumping mat 110, and locked by a V-ring locking system. The main frame 120 encircles the jumping mat 110, and is fixed by a plurality of springs 130. There are several V-ring locking systems between the springs 130 and the jumping mat 110, which connect springs 130, jumping mat 110 and the net 150.
The V-ring locking system has a V-shaped ring 111, one end of the V-shaped ring 111 is stitched tightly at the periphery of the jumping mat 110, the other end connects with the springs 130. Spring connecting holes 152 are defined at the bottom of the net 150, which has the same quantities as the springs 130. At the same time, the springs 130 connects the jumping mat 110 and the net 150 to be fixed.
Embodiment 3:
As shown in FIG. 2 and 4, the difference between the third embodiment and the above embodiment is that, further comprise an alternative padding 170, covering the gap between the main frame 120 and the jumping mat 110.
Embodiment 4:
Refer to FIGS. 1 to 5, the difference between the fourth and the above embodiment is that a top ring system is included on the top of the said enclosure poles 140.
The top ring system comprises a top body 154 and a top connecting portion 141, the top body 154 is made of elastic fiber rods, and is embedded in the track 142 of the top connecting portion 141. A hollow portion used for inserting the said enclosure pole 140 is formed at the bottom of the top connecting portion 141, so that the net 150 hangs over the top body 154 along the said enclosure pole 140, which is pleasing to eye, neat, safer, and easier to assemble or disassemble.
Embodiment 5:
Refer to FIGS. 1 to 5, the difference between the fifth embodiment and the fourth embodiment is that, alternatively, on the top of the net 150, the top body 154 is fixed on the top of said enclosure poles 140 by hoop and loop tapes 151, and the main body of the net 150 is fixed on the enclosure poles, so that the net 150 and the said enclosure poles 140 becomes more beautiful, more safer, more tidier and easier to assemble or disassemble.
Embodiment 6:
As shown in FIG. 2, except as described above, safety web 153 made at the lower part of the net 150 as an extra cross-shaped reinforcing stitch to reinforce the net to avoid shocking its lower part.
Also emphasized, there are many way of strengthening, primarily, cross-shaped or any webbing-shaped reinforcing nettings are preferred, which are also included in the claimed scope of the present invention.
The embodiments are chosen and described in order to explain the principles of the invention and their practical application so as to activate others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present invention pertains without departing from its spirit and scope. Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein.
Claims (6)
1. A trampoline comprising:
a main frame, a jumping mat, a number of springs, a number of legs, a net, and a number of enclosure poles; wherein, the main frame surrounds the periphery of the jumping mat, both are fixed by a plurality of springs, several V-ring locking systems are defined between the spring and the jumping mat, so as to connect with the spring, the jumping mat and the net;
at least six enclosure poles locate equidistantly and vertically on the main frame;
the top of the net is fixed on the top of the enclosure poles, meanwhile, the bottom of the net surrounds the periphery of the jumping mat and positioned by the V-ring locking system;
the legs are assembled on the bottom of the main frame.
a main frame, a jumping mat, a number of springs, a number of legs, a net, and a number of enclosure poles; wherein, the main frame surrounds the periphery of the jumping mat, both are fixed by a plurality of springs, several V-ring locking systems are defined between the spring and the jumping mat, so as to connect with the spring, the jumping mat and the net;
at least six enclosure poles locate equidistantly and vertically on the main frame;
the top of the net is fixed on the top of the enclosure poles, meanwhile, the bottom of the net surrounds the periphery of the jumping mat and positioned by the V-ring locking system;
the legs are assembled on the bottom of the main frame.
2. The trampoline according to claim 1, wherein the V-ring locking system has a V-shaped ring, one end of said V-shaped ring is stitched tightly at the periphery of the jumping mat, the other end of said V-shaped ring connects with the springs, spring connecting holes are defined at the bottom of the net, which has the same number as the springs, so that said springs connect both of the jumping mat and the net to be fixed.
3. The trampoline according to claim 1 or 2, further comprises a top ring system defined at the top of the pole enclosure, said top ring system comprising a top body and the top connecting portion, the top body is made of elastic fiber rods, and embedded in the track of the top connecting portion, a hollow portion used for inserting the enclosure pole is formed at the bottom of the top connecting portion, so that the net hangs over the top body along the enclosure poles.
4. The trampoline according to claim 1 or 2, further comprises a padding covering the springs and the gap between the main frame and the jumping mat, and fixed with the periphery of the main frame.
5. The trampoline according to claim 1 or 2, wherein the net is fixed on the top ring system by hook and loop tapes.
6. The trampoline according to claim 1 or 2, wherein said net comprises a safety web on its bottom part as an extra cross-shaped stitch to reinforce the net.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200794727U CN202538227U (en) | 2012-03-05 | 2012-03-05 | Novel trampoline |
| CN201220079472.7 | 2012-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2808984A1 true CA2808984A1 (en) | 2013-09-05 |
Family
ID=47158925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2808984 Abandoned CA2808984A1 (en) | 2012-03-05 | 2013-03-05 | Trampoline |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202538227U (en) |
| CA (1) | CA2808984A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017174567A1 (en) * | 2016-04-05 | 2017-10-12 | Avero Ab | Safety net for a trampoline, a trampoline and a method of arranging a safety net in a trampoline |
| US10780334B2 (en) | 2018-06-30 | 2020-09-22 | Avero Ab | Zippered safety layer in a trampoline |
| US11202952B2 (en) | 2019-01-26 | 2021-12-21 | Avero Ab | Corner support bar (CSB) in a trampoline |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103656970A (en) * | 2013-12-08 | 2014-03-26 | 无锡市安捷脚手架有限公司 | Bouncing equipment for fitness |
| CN105727496A (en) * | 2016-04-11 | 2016-07-06 | 天津富士达科技有限公司 | Safe trampoline |
| CN110090388B (en) * | 2019-05-16 | 2020-10-30 | 青岛金华星运动器材有限公司 | Trampoline flat-top tent roof |
-
2012
- 2012-03-05 CN CN2012200794727U patent/CN202538227U/en not_active Expired - Fee Related
-
2013
- 2013-03-05 CA CA 2808984 patent/CA2808984A1/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017174567A1 (en) * | 2016-04-05 | 2017-10-12 | Avero Ab | Safety net for a trampoline, a trampoline and a method of arranging a safety net in a trampoline |
| US10780334B2 (en) | 2018-06-30 | 2020-09-22 | Avero Ab | Zippered safety layer in a trampoline |
| US11202952B2 (en) | 2019-01-26 | 2021-12-21 | Avero Ab | Corner support bar (CSB) in a trampoline |
| US11273356B2 (en) | 2019-01-26 | 2022-03-15 | Avero Ab | High-tension safety net in a trampoline |
| US11577144B2 (en) | 2019-01-26 | 2023-02-14 | Avero Ab | Silent performance system and under padding channels in a trampoline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202538227U (en) | 2012-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20170307 |