U.S. patent application number 14/017192 was filed with the patent office on 2014-05-15 for portable support structure for a net to use in multi-sports or games.
The applicant listed for this patent is Belliza Ann Kababiya Garcia, Arian Gutierrez Wartenweiler. Invention is credited to Belliza Ann Kababiya Garcia, Arian Gutierrez Wartenweiler.
Application Number | 20140135153 14/017192 |
Document ID | / |
Family ID | 48144450 |
Filed Date | 2014-05-15 |
United States Patent
Application |
20140135153 |
Kind Code |
A1 |
Wartenweiler; Arian Gutierrez ;
et al. |
May 15, 2014 |
Portable Support Structure for a Net to Use in Multi-Sports or
Games
Abstract
The present invention relates to a portable support structure
with net useful for use in multiple sports or games. Embodiments of
the invention allow installation in a safe and easy way that can be
performed and used by children and/or adults. It also has a
mechanism of rotation and lock to a more secure fit by providing
safety and soundness. Inside the tubes that make up support is an
elastic cord that gives greater security and fixity to the
structure.
Inventors: |
Wartenweiler; Arian Gutierrez;
(Col. Chapultepec Morles, MX) ; Kababiya Garcia; Belliza
Ann; (Col. Chapultepec Morles, MX) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Wartenweiler; Arian Gutierrez
Kababiya Garcia; Belliza Ann |
Col. Chapultepec Morles
Col. Chapultepec Morles |
|
MX
MX |
|
|
Family ID: |
48144450 |
Appl. No.: |
14/017192 |
Filed: |
September 3, 2013 |
Current U.S.
Class: |
473/478 |
Current CPC
Class: |
A63B 61/00 20130101;
A63B 2102/04 20151001; A63B 2102/02 20151001; A63B 2225/093
20130101; A63B 71/023 20130101; A63B 2208/12 20130101; A63B 69/002
20130101; A63B 2071/026 20130101; A63B 2243/0095 20130101 |
Class at
Publication: |
473/478 |
International
Class: |
A63B 63/00 20060101
A63B063/00; A63B 61/00 20060101 A63B061/00 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 3, 2012 |
MX |
MX/A/2012/010162 |
Claims
1. A portable support structure with net useful for use in multiple
sports or games comprising: i) a net; ii) vertical tubes that are
inserted in the net to form the frame or support of the net for use
in playing a game, said vertical tubes can be adjusted so the
height of the net may vary; iii) tubes to stabilize the support or
frame of the net without the need for drilling into the ground
which will be placed the net support; iv) an elastic cord that is
inside the tubes giving to the structure greater security and
fixity and v) two sacks of sand that serve to give weight to
maintain the net in position when it is used to play soccer.
2. A portable support structure with net according to claim 1,
wherein comprising 11 tubes (2a, 2b, 3a, 3b, 3c, 3d, 4a, 4b, 5a, 5b
and 6) of 2.2 cm diameter and 2 tubes (1a and 1b) of 1.9 cm
diameter.
3. A portable support structure with net according to claim 1
wherein the tubes are joined together by an elastic cord (7) of 5
millimeters diameter and at the end of the elastic cord are 2
plastic hooks (8a and 8b) which serve to tighten the net.
4. A portable support structure with net according to claim 1,
wherein in the tubes (1a, 1b and 2a, 2b) are two plastic mechanisms
of rotation and lock (12a and 12b) that allow adjusting the height
of the net.
5. A portable support structure with net according to claim 1,
wherein in the tubes 4a and 4b include two foam gears 9a and 9b
which serve to accommodate tubes of the portable support structure
when it is disarmed.
6. A portable support structure with net according to claim 1,
wherein the ends of the tubes 4a and 4b are two three phase elbows
10a and 10b where the tubes 3a, 3b and 3c, 3d are inserted,
respectively.
7. A portable support structure with net according to claim 1,
wherein comprising two sacks of sand those are placed across the
net and maintain the structure of net free of movement and gives
greater stability when the net has a height normal or minimum.
8. A portable support structure with net according to claim 1,
wherein the portable support structure for the net when it is
disarmed is stored in a Nylon bag of 59 cm long and 26.5 cm wide
with a front compartment of 35 cm long and 26.5 cm wide, and
wherein the bag has a handle to ease its transfer.
9. A portable support structure with net according to claim 1, that
can be used indoors or outdoors.
10. A portable support structure with net according to claim 1,
wherein can be used markers which serve to delimit the area of a
game.
Description
PRIORITY INFORMATION
[0001] This application claims the benefit of Mexico Patent
Application No. MX/a/2012/010162 filed Sep. 3, 2012, the subject
matter of which is incorporated herein by reference.
FIELD OF THE INVENTION
[0002] The present invention relates to a portable support
structure with a net useful for playing multiple sports or games.
As well as allowing it installation in a safe and easy way, the
present devices can increase or decrease the height of the net
allowing use by children and/or adults. It also has a mechanism of
rotation and lock to a more secure fit by providing safety and
soundness. Inside the tubes that make up the support is an elastic
cord that gives greater security and fixity to the structure.
[0003] The present invention comprising the combination of i) a
net; ii) vertical tubes that are inserted to form the frame or
support on which is fixed the net for the game, these vertical
tubes can be adjusted so that the height of the net may vary; iii)
tubes to stabilize support or frame of the net without having to
pierce the soil in which the net support will be placed; iv) an
elastic cord that is located inside the tubes giving greater
security and fixity to the structure, and v) two sacks of sand that
serve to give weight to maintain the net in position when it is
used to play soccer.
[0004] Embodiments of the present invention provide a portable
support structure net that can be used indoors or outdoors to play
multiple sports such as tennis, badminton, volleyball, football,
and soccer among others, which also solves surprisingly the problem
that represent heavy structures that hinder and that they are also
difficult to arm and disarm all of this difficult its use.
BACKGROUND OF THE INVENTION
[0005] The present invention relates to a portable support
structure with net that can be used to play multiple sports
outdoors such as badminton, tennis, football, volleyball, and
soccer, among others. The height of the net can vary which also
surprisingly solves the problem that represent heavy structures
that hinder and that are also difficult to arm (i.e. assemble) and
disarm (i.e. disassemble) all of which reduce difficulty of its
use.
[0006] This portable support structure with net to play allows
using it outdoors without requiring long spaces or appointed places
for these games. It has the advantage that can change of location
and can be easy to transfer. Does not require much storage space
and it can be used by children or adults, this because it is
retractable and easy handling to its armed and disarmed (i.e.
assembled and disassembled).
[0007] At present the construction boom of clubs or sports centers
which have the opportunity to participate in various sporting
activities such as tennis, badminton, football among others has
been given. However the access to these centers requires many costs
in some cases and in others cases of time, due to the possibility
of having the necessary accessories to play the games is very
difficult, more than anything because it requires much space for
installation of the courts or nets to be able to play the game.
[0008] There is a great interest around the world to achieve
encourage exercise to reduce diseases caused by overweight. In
addition, there is the desire away the children and youth through
the sport of the dangers or vices instilling them in the
participation in sports activities. Hectic in our daily lives and
the various constraints that exist at present in our country
requires appropriate conditions that promote different ways of
maintaining us assets and allow to keep our body in motion. With
the portable support for net of games of the present invention
achieves encourage exercise since it does not require too much
space to store, it is easy to install, solid and resistant through
a mechanism of rotation and lock allowing a secure fit. Its
construction is solid and resistant to motivating the user to use
it constantly.
[0009] A lot of support net systems for games have been developed,
however there is the problem of their complex installations or
unsafe stability. Further, many require long space to carry out the
game because it is necessary to have a fixed place in which the net
will be placed.
[0010] The document CN 201823262 discloses a portable net that
comprising a support in which is placed the net. The support
comprises a net of steel tubes removable, a pair of tubes insert
fixes, a net attachment hook, a transverse tube with knob which
intersect at the ends a pair of parallel tubes attached to the tube
transverse by au adjustment mechanism fou-way connecting tubes
firming, a base seat type. But it is different from the structure
of the present invention because the tube 11 is used to fix the
net, this net may not vary in height, although the bases of three
legs also have a tube to stabilize the support or frame of the net
it has a tube length adjustment knob and no has the two gears
polyurethane which serve to secure the tubes once unfolded the
structure also does not have an elastic cord that is located inside
the tubes giving greater security and fixity to the structure, and
two sacks of sand that serve to give weight and maintain the net in
position therefore not affected the novelty or inventive activity,
i.e. the structure of the present invention solves a problem since
this can be used in multiple sports as well as permit its
installation in a secure way and easy; that can increase or
decrease the height of the net allowing set used by children and/or
adults. It also has a mechanism of rotation and lock for a fit more
secure by providing safety and soundness. Inside the tubes that
make up support is an elastic cord that gives greater security and
fixity to the structure.
[0011] The document CN201558484 discloses a portable type badminton
net that comprises an upper structure of tubes separated into two
segments and a lower tubes structure, An upper segment of tubes
that is vertical position has a smaller diameter than the other
segment of the upper structure pipe and which is in a vertical
position. The smaller diameter segment is inserted into the larger
diameter segment and is secured by insurance, The part of the tube
structure is provided with a lower base three legs. The net is
ensured by a hook on the vertical tubes. But this structure differs
from the structure of the present invention because tube 1 is used
to attach to net 7, this net may not vary in height, also tube 1 is
inserted into tube 2 only transport, three-legs bases are also
different to the structure of the present invention because it has
tubes to stabilize support or frame of the net which makes it more
unstable. It cannot also be used as goal to play football because
it has not two sacks of sand that serve to give weight and keep the
net in position, so the document above mentioned does not
anticipate the present invention therefore does not affect the
novelty or inventive activity, i.e. the structure of the present
invention solves the problem to use in multiple sports as well as
allowing their installation in a secure way and easy; You can
increase or decrease the height of the net allowing this way be
used by children or adults. It also has a mechanism of rotation and
lock for a fit more secure by providing safety and soundness.
Inside the tubes that make up support is an elastic cord that gives
greater security and fixity to the structure.
[0012] The document U.S. Pat. No. 4,135,716 discloses a portable
support structure of net that comprising a net, a first pair of
tubes and a second pair of tubes that lit and inserted, one means
abase for supporting each of the second pairs of tubes. But it is
different from the structure of the present invention because
although tube 56 is inserted into the tube 54 to vary the height,
at the bottom of the network it boasts support 66 in the center of
the net, bases of three legs do not have a tube to stabilize
support or frame of the net or not have two gears of polyurethane
that are used to fix the tubes once unfolded the structure, also do
not have an elastic cord that is within the tubes giving greater
security and fixity to the structure, and two sacks of sand that
they serve to give weight to maintain the net in position when it
is used to play football, so that the document cited does not
anticipate the present invention therefore not affected by the
novelty or inventive i.e. the structure of the present invention
solves a problem because it can be used in multiple sports as well
as allow its safe and easy installation; the height of the net can
increase or decrease allowing this way be used by children and/or
adults. It also has a mechanism of rotation and lock for a fit more
secure by providing safety and soundness. Inside the tubes that
make up support is an elastic cord that gives greater security and
fixity to the structure.
[0013] All the documents mentioned above do not affect the novelty
and the inventive step of the portable support structure with net
for games of the present invention, since the structure of portable
support net of the present invention has characteristics that give
greater security and fixity not mentioned or suggested in previous
documents, above all because comprising the combination of i) a
net; ii) vertical tubes that are inserted to form the frame or
support in which is fixed the net for the game, these vertical
tubes can be adjusted so the height of the net may vary; iii) tubes
to stabilize the support or frame of the net without the need for
drilling into the ground which will be placed the net support; (iv)
an elastic cord that is located inside the tubes giving it greater
security and fixity to the structure, and v) two sandbags that
serve to give weight to maintain the net in position when used to
play soccer.
SUMMARY OF THE INVENTION
[0014] The present invention relates to a portable support
structure with net useful for use in multiple sports or games
wherein comprising: i) a net; ii) vertical tubes that are inserted
to form the frame or support on which is fixed the net for the
game, these vertical tubes can be adjusted so that the height of
the net may vary; iii) tubes to stabilize support or frame of the
net without having to pierce the soil in which the net support will
be placed; iv) an elastic cord that is located inside the tubes
giving greater security and fixity to the structure, and v) two
sacks of sand that serve to give weight to maintain the net in
position when it is used to play soccer.
[0015] As well as allowing it installation in a safe and easy way;
to be used by children and/or adults. It also has a mechanism of
rotation and lock to a more secure fit by providing safety and
soundness. Inside the tubes that make up support is an elastic cord
that gives greater security and fixity to the structure.
[0016] The portable support structure with net can be used to play
multiple sports such as tennis, Badminton, volleyball, football,
among others.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The FIG. 1 is a side view of the portable support structure
of net for games which is armed.
[0018] The FIG. 2 shows an perspective disassembled of the portable
support structure for net of games in which the tubes are attached
to two gears polyurethane that serve to fix the tubes once the
structure is folded.
[0019] The FIG. 3a shows already armed portable support structure
with net (13).
[0020] The FIG. 3b shows three phase elbow (10b) and the elastic
cord (7) to form tubes to stabilize the support or frame the
net.
[0021] The FIGS. 4a, 4b and 4c shows proper placement of the
net.
[0022] The FIG. 4a shows the net (13) before placed it.
[0023] The FIG. 4b shows the net (13) where in the vertical tube
has been inserted (not shown) before attaching the hook (8a or 8b)
to the rings (14a or 14b).
[0024] The FIG. 4c, shows the net (13) in which the hooks (8a or
8b) passed into the rings (14a or 14b) of the net to be able to
tighten it, this because the hook is connected to the elastic cord
(7) which provides greater safety and fixity structure and net.
[0025] The FIG. 5a shows the net with normal height and minimum
height.
[0026] The FIG. 5b shows the net with maximum height.
[0027] The FIG. 6 shows the markers which serves to delimit the
playing area.
[0028] The FIG. 7 shows the face of front (F) and back (V) of the
markers that define the playing area.
[0029] The FIG. 8 shows the bag to transport the structure once
disarmed (i.e. disassembled) or folded.
[0030] The FIG. 9 shows the net (13) provided with two sacks of
sand (15) to maintain the structure with net free of movement and
provide greater stability.
DESCRIPTION INVENTION EMBODIMENTS
[0031] The present invention relates to a portable support
structure with net useful for use in multiple sports or games
comprising the combination of i) a net; vertical tubes that are
inserted to form the frame or support on which is fixed the net for
the game, these vertical tubes can be adjusted so that the height
of the net may vary; iii) tubes to stabilize support or frame of
the net without having to pierce the soil in which the net support
will be placed; iv) an elastic cord that is located inside the
tubes giving greater security and fixity to the structure, and v)
two sacks of sand that serve to give weight to maintain the net in
position when it is used to play soccer.
[0032] The portable support structure with net also has a mechanism
of rotation and lock for a setting more secure by providing safety
and soundness.
[0033] The net is fixed with hooks that have passed through the
rings of the net to be able to tighten it this because the hook is
connected to the elastic cord which surprisingly provides greater
security and fixity to the structure and the net.
[0034] The portable support structure with net of games comprises
of 11 tubes (2a, 2b, 3a, 3b, 3c, 3d, 4a, 4b, 5a, 5b and 6 of 2.2 cm
in diameter and 2 tubes (1a and 1b) of 1.9 cm diameter, connected
by an elastic cord (7) of 5 millimeters diameter, 2 plastic hooks
(8a and 8b) at the ends of the elastic cord which serve to tighten
the net (13), 2 gears of polyurethane (9a and 9b) which serve to
secure the tubes when structure is folded, 2 three-phase elbows
(10a and 10b), 4 plugs or leads (11a, 11b, 11c and 11d) to cover
and protect the ends of the tubes (3a, 3b, 3c and 3d) and 2 plastic
mechanisms of rotation and lock (12a and 12b) to adjust the height
of the net.
[0035] The portable support with net of games of the present
invention comprising: [0036] i) a net [0037] ii) vertical tubes
that are inserted to form the frame or support of the net for game,
these vertical tubes can be adjusted so the height of the net may
vary; [0038] iii) tubes to stabilize the support or frame of the
net without the need for drilling into the ground which will be
placed the net support; [0039] iv) an elastic cord that is inside
the tubes giving to the structure greater security and fixity and
[0040] v) two sacks of sand that serve to give weight to maintain
the net in position when it is used to play soccer.
[0041] In a first embodiment, the portable support structure with
net of the present invention is useful for use in multiple sports
or games, comprises two tubes of galvanized steel (1a and 1b) of
75.6 cm long.times.1.9 cm diameter which can slide upwards to give
height to the net and are inserted respectively with the upper end
of two tubes (2a and 2b) of 74 cm long.times.2.2 cm diameter;
securing the height of the net with two mechanisms of rotation and
plastic lock (12a and 12b). At the upper end of the tubes (1a and
1b) are two hooks (8a and 8b) of 5.7 cm.times.2.5 cm long.times.1.5
cm thick. The lower end of the tube (2a) and the lower end of the
tube (2b) are placed in the three phase elbows (10a and 10b)
respectively. In the case of the three-phase elbow 10a are placed
at two ends two tubes of 49.7 cm long.times.2.2 cm diameter (3a and
3b) whose ends are the tips or caps (11a and 11b). In the
three-phase elbow 10b are placed at two ends two tubes of 49.7 cm
long.times.2.2 cm diameter (3c and 3d) at whose ends are the tips
or caps (11c and 11d). The remaining end of the three-phase elbow
(3a) stands a tube of 75.5 cm long.times.2.2 cm diameter (4a); in
this tube (4a) is located a foam gear (9a) of 8.3 cm
diameter.times.3.8 cm thick. This gear has 6 spaces to accommodate
tubes when the support structure is disarmed. The tube (4a) is
inserted with tube (5a) of 63 cm long.times.2.2 cm diameter and
this is inserted into the tube (6) of 48 cm long.times.2.2 cm
diameter. In tube (6) is inserted a tube (5b) of 63 cm
long.times.2.2 cm diameter and this is inserted with a tube (4b) of
75.5 cm long.times.2.2 cm diameter; in this tube (4b) is located a
foam gear (9b) of 8.3 cm diameter.times.3.8 cm thick. This gear has
6 spaces to accommodate the tubes when the support structure is
disarmed. The other end of the tube (4b) is inserted into the
three-phase elbow (10b), at whose ends are inserted the tubes (2b,
3c and 3d) with tips or caps (11c and 11d). On the inside of the
tubes and three phase elbows is an elastic cord (7) that serves as
a connection between the tubes and serves to keep the structure
together.
[0042] In a second embodiment of the invention, the tubes (1a and
1b) are adjusted to provide the desired height of the net. In which
case the net with normal height is 72 cm and the net with maximum
height for Badminton or volleyball is 155 cm.
[0043] In a third embodiments the rotation and locking plastic
mechanisms (12a and 12b) are unscrewed to adjust height. Once
reached the desired height, it is screwed again to keep the net at
the desired height.
[0044] In a fourth embodiment of the invention, the portable
support structure has a net (13) of 311 cm long.times.72 cm wide.
At each end of the net are folds (13a and 13b) of 22.5 cm width,
which are closed by means of velcro joints. At top of the net (13)
near to the fold (13a) and the fold (13b) is located a ring (14a
and 14b). It is necessary to pass the hooks into the rings of the
net to be able to tighten it.
[0045] In a fifth embodiment of the invention, the structure of
portable support structure with net useful for use in multiple
sports or games which has with two sacks of sand of nylon (15) that
support up to 18 kg each and its function is maintain the structure
of the movement-free net and give it greater stability when playing
football.
[0046] In a sixth embodiment, the portable support structure is
disassembled for stored and is stored inside of a bag of Nylon with
59 cm long and 26.5 cm wide, with a front compartment of 35 cm long
and 26.5 cm wide. The bag has a handle for easy transfer.
[0047] The FIG. 1, is a side view of the armed portable support
structure for net of games that shows the main parts of which is
composed, a net (13 not shown) attached to the tubes (1a and 1b) by
hooks (8a and 8b) that pass through the rings of the net (13a and
13b not shown); tubes 1a, 1b, 2a, 2b, 3a, 3b, 3c, 3d, 4a, 4b, 5a,
5b and 6 form the structure and are joined by cord (7 not shown),
two gears 9a and 9b, two three-phase elbows 10a and 10b, leads or
plugs 11a, 11b, 11c and 11d and rotation and lock plastic mechanism
12a and 12b that are unscrewed to adjust the height of the tubes
that have the net.
[0048] The FIG. 2 shows a disarmed perspective of the portable
support structure for net of games. The tubes (1a, 1b, 2a, 2b, 3a,
3b, 3c, 3d, 4a, 4b, 5a, 5b and 6 not shown) are accommodated in
gears (9a and 9b not shown).
[0049] The FIG. 3a shows an armed portable support structure.
[0050] The FIG. 3b shows the three phase elbow (10b) and the
elastic cord (7).
[0051] The FIG. 4a shows the net (13) before to be armed.
[0052] The FIG. 4b shows the net (13) in which the vertical tube
(not shown) before attaching the hook (8a or 8b) to the ring (14a
and 14b).
[0053] The FIG. 4c shows the net (13) in which the hooks (8a or 8b)
passed into the rings (14a or 14b) of the net to be able to tighten
it this because the hook is connected to the elastic cord (7) which
provides greater safety and fixity to the structure and to the
net.
[0054] The FIG. 5a shows the net with normal height of 72 cm.
[0055] The FIG. 5b shows the net with maximum height of 155 cm.
[0056] The FIG. 6 shows markers that serve to delimit the playing
area.
[0057] The FIG. 7 shows the face of front (F) and back (V) of the
markers that define the playing area.
[0058] The FIG. 8 shows the bag to transport the structure once
disarmed or folded.
[0059] The FIG. 9 shows the net (13) provided with two sacks of
sand (15) to maintain the structure with net free of movement and
provide greater stability.
EXAMPLES
[0060] The following examples are intended to illustrate the
invention, not restrict it, any variation by experts in the
technique, being within the scope of the same.
Example 1
[0061] It proceeds to assemble a portable support structure of the
present invention with useful net for use in multiple sports or
games that comprises: [0062] i) a net; [0063] ii) vertical tubes
that are inserted to form the frame or support in which the net of
the game, these vertical tubes can be adjusted for that the height
of the net may vary; [0064] iii) tubes to stabilize support or
frame of the net without having to pierce the soil in which the net
support will be placed [0065] iv) an elastic cord that is located
inside the tubes giving it greater security and fixity to the
structure, and [0066] v) two sacks of sand that serve to give
weight to maintain the net in position when used to play football.
The structure is manufactured by methods known in the art.
[0067] The portable support structure with net also has a mechanism
of rotation and lock for a setting more secure by providing safety
and soundness.
[0068] The net is attached with hooks that have passed through the
rings of the net to be able to tighten it this since this hook is
connected to the elastic cord which provides greater safety and
fixity structure and to the net.
Example 2
[0069] It is assembling portable support structure with net as in
the example above in natural or synthetic grass, the net is put in
the maximum height and it is proceed to place rubber markers or any
synthetic material which serve to delimit the area of game, first
comes to play badminton rackets and shuttlecock, followed by
proceeds to play volleyball.
Example 3
[0070] It is proceeding to assemble a portable support structure
with net as in the previous example on hard surface. The net
becomes the normal height and proceeds place markers that serve to
delimit the playing area, you should first play tennis with rackets
balls and shuttlecock, followed by proceeds to play to pass a
soccer ball.
Example 4
[0071] It is proceeding to arm a portable support structure with
net as in the previous example in grass surface. The net put in
normal height and then place the sacks of sand, proceeding to play
soccer with balls or footballs.
Features
[0072] The characteristics of the portable support structure for
net of games of the present invention are: [0073] 11 tubes of 2.2
cm diameter and 2 tubes of 1.9 cm diameter. These two tubes are
those at their ends containing the hooks that taut the net. [0074]
Two plastic mechanisms of rotation and lock and serving to adjust
the desired height of the net. [0075] Two three phase elbows (10a
and 10b) which the tubes that make up the lower part of the
portable support structure of net for games are inserted. [0076]
Two foam gears (9a and 9b) that serve with 6 spaces each have to
accommodate tubes from the portable support structure for net when
it is disarmed. [0077] One net [0078] Two sacks of sand [0079] A
bag to storage the portable support structure for net of games when
it is disarmed.
Advantages
[0080] The advantages of the portable support structure for net of
games of the present invention are: [0081] Allow installation of a
safe and easy way. [0082] You can increase or decrease the height
of the net allowing by this way be used by children and/or adults.
[0083] Can be used indoors or outdoors. [0084] It accounts also
with a mechanism of rotation and lock for a more secure fit by
providing security and robustness. [0085] Inside of tubes that make
up the support is an elastic cord that gives greater security and
fixity to the structure.
* * * * *