Negative pressure detection equipment for milk sucking bottle

Abstract

A milk suction bottle negative pressure detection device comprises a base, side plates, two pushing plates, two limiting plates, a support set and a top machine set, the side plates are arranged on the front side and the rear side of the base respectively, the two pushing plates are arranged above the base and linearly move front and back along the upper portion of the base, and the two limiting plates are arranged on the top machine set. The bottom of the two limiting plates is fixed to the upper portion of the base, the rear sides of the two limiting plates are tightly attached to one of the two side plates respectively, and the top unit is fixed to the upper portion of the base through the support set. The first air bag and the second air bag are in contact with the contact surface of the milk suction bottle, so that the milk suction bottle is prevented from being in hard contact with other objects during shaking and collision during negative pressure detection, and the surface damage of the milk suction bottle is reduced.

Description

Technical Field

[0001] This invention relates to a transport device, and more particularly to a negative pressure detection device for a breast pump bottle. Background Technology

[0002] After the baby bottles are manufactured, they need to be transported from the manufacturing site to the testing equipment. Therefore, during the negative pressure test, the baby bottles need to be protected during transportation to avoid damage caused by collisions or other reasons, which would make the baby bottles less visually appealing when displayed.

[0003] In the usual way of transporting breast pumps, ordinary supports and compartments are commonly used. However, since breast pumps have different shapes, the supports and boxes used need to be customized according to specifications. Moreover, most of them are disposable products, which leads to some waste. Furthermore, the used compartments are not disposed of, which can easily take up indoor and existing space. In addition, if the compartments between ordinary supports and boxes are not adequately padded, the breast pumps can easily be damaged by collisions. Summary of the Invention

[0004] To address the technical deficiencies in the background technology, this invention proposes a negative pressure detection device for baby bottles, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows: A negative pressure detection device for a breast pump includes: a base, side plates, push plates, limiting plates, a support assembly, and a top assembly. The base has side plates on its front and rear sides respectively. Two push plates and two limiting plates are provided, with the two push plates positioned above the base and moving back and forth along a straight line above the base. The bottoms of the two limiting plates are fixed to the top of the base, and their rear sides are respectively in close contact with one of the two side plates. The top assembly is fixed to the top of the base via the support assembly. The top of the base has at least two sliding grooves, each corresponding to the lower part of each push plate. Each push plate has a protrusion on its lower part, which matches each sliding groove. Each push plate and each limiting plate has an opening on their opposite sides, and a first airbag is provided at each opening. A push rod is connected to the side of each push plate away from the opening. The push rod passes through one of the two side plates from back to front and is engaged with it. Each push plate moves back and forth along each sliding groove through the engagement of the push rod. A first suction pump and a first air pump are provided in the side plate at the front end of the base. The first suction pump and the first air pump are respectively equipped with two limiting plates with bifurcated air pipes. The support assembly includes: uprights, top base, pulleys, insertion holes and pins. There are at least four uprights, which are fixed in pairs around the base. Each upright has several insertion holes longitudinally. The insertion hole at the bottom of each upright is fixed to a fixing plate under the base by a pin. Each upright has a pulley at the bottom. The insertion hole at the top of each upright is connected to the top base by a pin and the top base is fixed between the four uprights. The top unit is fixed in a circular groove starting from the middle of the top base. A second airbag is provided below the top base.

[0005] Furthermore, the base and the fixing plate below are integrally formed; an anti-slip pad is adhered to the top of the base.

[0006] Furthermore, two push rods passing through one of the two side plates pass through the front side of one of the side plates respectively. Each push rod has a protrusion at its front end and a T-shaped cylindrical shaft at its other end. The T-shaped cylindrical shaft is located inside a bushing and is matched and connected to each other. Each push rod is fixedly connected to each push plate by a bushing. A control unit is located inside the side plate with the two push rods. The control unit is electrically connected to the first suction pump and the first air pump inside the side plate by a conduit. An air vent is snapped open at the front end of the side plate and is connected to the first suction pump and the first air pump respectively. The control unit is connected to a power source by a conduit, and a switch is connected between the control unit and the power source. The switch is fixed to the outside of the side plate. The power source is fixed inside the fixing plate.

[0007] Furthermore, after the two push plates and the two limiting plates are closed together, they form a rhombus shape; the air pipes connecting the two push plates to the first suction pump and the first air pump are spring air pipes, and each spring air pipe is housed in a slot opened in each push plate; the opening connecting each limiting plate to the branched air pipe is located below each limiting plate; the two branched air pipes are respectively housed in the base.

[0008] Furthermore, the pulley is fixed to the lower end of each of the uprights with screws; the lower end of each of the uprights is L-shaped, and the L-shaped end of each upright matches the base and the fixing plate.

[0009] Furthermore, the top unit is provided with through holes on the side where it connects to the four uprights.

[0010] Furthermore, the top unit is a housing; the top unit includes: an air inlet, a second suction pump, a second air pump, a mesh, and a fixing key. The air inlet is located above the top unit base, and the mesh is adhered to the surface of the air inlet. The second suction pump and the second air pump are installed and fixed behind the air inlet and the mesh and inside the top unit. An air pipe is provided below the second suction pump and the second air pump, and the air pipe extends to the opening below the top unit base.

[0011] Furthermore, a second airbag is provided in the opening below the top base. The second airbag is adhered to the opening below the top base, and at least two air holes are provided on one side of the second airbag and the opening below the top base. The two air holes of the second airbag are respectively connected to a second suction pump and a second air inflator.

[0012] The beneficial effects of this invention are as follows: This invention uses an airbag and clamping structure to fix the breast pump bottle.

[0013] The breast pump is positioned above the base and in front of the push plate and the limiting plate. The first airbags at the openings of the push plate and the limiting plate above the base are inflated by the first air pump. The push plate moves along the sliding groove towards the breast pump via a push rod. The push plate drives the first airbag to push the breast pump to the first airbag outside the limiting plate. The two push plates can be pushed independently, thus allowing for the individual clamping of breast pumps with irregular shapes. The two push plates push the breast pump to the limiting plate to clamp it. The first airbags of the two push plates and the two limiting plates are placed outside the breast pump, which avoids hard contact between the two push plates and the two limiting plates and the breast pump. Furthermore, after the invention is impacted, the first airbags can cushion and protect the breast pump, thereby reducing wear and tear on the breast pump caused by the impact.

[0014] After fixing and limiting the bottom of the breast pump, the support assembly of the present invention adopts four uprights, which can provide an extendable space for irregularly shaped breast pumps.

[0015] The top unit at the top of the four uprights of this invention is used to limit and fix the upper end of the breast pump. The second airbag below the top unit expands through the internal structure of the top unit. The expanded second airbag then wraps around the upper part of the breast pump. Therefore, the second airbag is extensible. The second airbag wraps around the upper part of the fixed breast pump, making the second airbag the top fulcrum of the breast pump, which can prevent the upper part of the breast pump from shaking. Furthermore, the edge of the expanded second airbag hangs down towards the edge of the breast pump, thus achieving a wrapping state for the upper part of the breast pump.

[0016] When the breast pump of the present invention is impacted or shaken, the two push plates and the two limiting plates respectively clamp and fix the lower end of the breast pump, thus avoiding shaking and collision of the breast pump. Furthermore, when the breast pump has a certain height, the upper part of the present invention expands the second air bladder through the top unit, and the second air bladder wraps around the top of the breast pump, thus stabilizing the breast pump.

[0017] The present invention uses a first airbag and a second airbag to contact the contact surface of the breast pump, so that the shaking and collision generated by the breast pump during negative pressure detection avoids hard contact with other objects, thereby reducing surface damage to the breast pump. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a negative pressure detection device for a breast pump.

[0019] Figure 2 This is a schematic diagram of the base structure of a negative pressure detection device for a breast pump.

[0020] Figure 3 This is a schematic diagram of the moving push plate structure of a negative pressure detection device for a baby bottle.

[0021] Figure 4 This is a schematic diagram of the first airbag deploying on the push plate of a negative pressure detection device for a baby bottle.

[0022] Figure 5 A cross-sectional view of the top unit and the second airbag of a negative pressure detection device for a breast pump bottle.

[0023] Figure 6 This is a schematic diagram of the second airbag deployment structure of a negative pressure detection device for a baby bottle.

[0024] Figure 7 This is a schematic diagram of the distribution of the branched air pipes 34 in a negative pressure detection device for a baby bottle.

[0025] Figure 8This is a cross-sectional view of the connection end between the push rod and the push plate of a negative pressure detection device for a baby bottle.

[0026] The components include: base 1, side plate 2, push plate 3, limit plate 31, bracket group 4, top unit group 5, second airbag 6, power supply 7, sliding groove 12, push rod 21, T-shaped cylindrical shaft 212, bushing 211, fixing plate 11, anti-slip pad 13, switch 22, control unit 24, first air pump 242, first air pump 241, first airbag 32, spring air pipe 33, bifurcated air pipe 34, upright 41, top unit base 42, pulley 43, insertion hole 411, pin 412, air inlet 51, second air pump 52, second air pump 53, mesh 54, fixing key 55, and connecting strap 61. Detailed Implementation

[0027] The embodiments of the present invention will be described below with reference to the accompanying drawings and related examples. The embodiments of the present invention are not limited to the following examples, and the present invention relates to the relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0028] A negative pressure detection device for a breast pump includes: a base 1, side plates 2, push plates 3, limiting plates 31, a support assembly 4, and a top assembly 5. Side plates 2 are respectively provided on the front and rear sides of the base 1. Two push plates 3 and two limiting plates 31 are provided, with the two push plates 3 positioned above the base 1 and moving back and forth along a straight line above the base 1. The bottoms of the two limiting plates 31 are fixed to the top of the base 1, and the rear sides of the two limiting plates 31 are respectively in close contact with one of the two side plates 2. The top assembly 5 is fixed above the base 1 via the support assembly 4. The base 1 has at least two sliding grooves 12 on its upper surface, each corresponding to the lower surface of one push plate 3. A protrusion is provided below each push plate 3, matching each sliding groove 12. Openings are respectively opened on the opposite sides of each push plate 3 and each limiting plate 31, and a first airbag 32 is provided at each opening of each push plate 3 and each limiting plate 31. A push rod 21 is connected to the side of each push plate 3 away from the opening, and the push rod 21 passes through the two side plates from back to front. 2. One of them is in a meshing connection. Each push plate 3 moves back and forth along each sliding groove 12 through the meshing of push rod 21. The side plate 2 at the front end of the base 1 is provided with a first suction pump 241 and a first air pump 242. The first suction pump 241 and the first air pump 242 are respectively equipped with two limiting plates 31 with bifurcated air pipes 34. The support group 4 includes: uprights 41, top base 42, pulleys 43, insertion holes 411 and pins 412. There are at least four uprights 41, which are fixed in pairs. Around the base 1, each upright 41 has several longitudinally opened insertion holes 411. The insertion hole 411 at the bottom of each upright 41 is fixed to the fixing plate 11 below the base 1 by a pin 412. Each upright 41 is provided with a pulley 43 below it. The insertion hole 411 at the top of each upright 41 is connected to the top machine base 42 by a pin 412, and the top machine base 42 is fixed between the four uprights 41. The top machine unit 5 is fixed in the circular groove starting from the middle of the top machine base 42. A second airbag 6 is provided below the top machine base 5.

[0029] This invention uses an airbag and clamping structure to fix the breast pump bottle.

[0030] The breast pump is placed above the base 1 and in front of the push plate 3 and the limiting plate 31. The first airbag 32 at the opening of the push plate 3 and the limiting plate 31 above the base 1 is inflated by the first air pump 242. The push plate 3 moves towards the breast pump via the push rod 21 along the sliding groove 12. The push plate 3 drives the first airbag 32 to push the breast pump to the first airbag 32 outside the limiting plate 31. The two push plates 3 can be pushed independently, so they can clamp the breast pump with different shapes. The two push plates 3 push the breast pump to the limiting plate 31 to clamp it. The first airbag 32 of the two push plates 3 and the two limiting plates 31 are placed outside the breast pump, which can avoid hard contact between the two push plates 3 and the two limiting plates 31 and the breast pump. In addition, after the invention is impacted, the first airbag 32 can buffer and protect the breast pump, thereby reducing the wear and tear of the breast pump caused by the collision.

[0031] After fixing and limiting the bottom of the breast pump, the support assembly 4 of the present invention is set with four uprights 41, which can provide an extendable space for the irregularly shaped breast pump.

[0032] This invention is used to fix and test breast pumps, thereby facilitating testing by external testing equipment.

[0033] The top unit 5, located at the top of the four uprights 41 of this invention, is used to limit and fix the upper end of the breast pump bottle. The second airbag 6 below the top unit 5 expands through the internal structure of the top unit 5. The expanded second airbag 6 then wraps around the upper part of the breast pump bottle. Therefore, the second airbag 6 is extensible. The second airbag 6 wraps around the upper part of the fixed breast pump bottle, making the second airbag 6 the top fulcrum of the breast pump bottle, which can prevent the upper part of the breast pump bottle from shaking. Furthermore, the edge of the expanded second airbag 6 hangs down towards the edge of the breast pump bottle, thus achieving a wrapping state for the upper part of the breast pump bottle.

[0034] When the breast pump of the present invention is impacted or shaken, the two push plates 3 and the two limiting plates 3 respectively clamp and fix the lower end of the breast pump, thus avoiding shaking and collision of the breast pump. Furthermore, when the breast pump has a certain height, the top of the present invention expands the second air bladder 6 through the top unit 5, and the second air bladder 6 wraps around the top of the breast pump, thus stabilizing the breast pump.

[0035] In this invention, the contact surface with the breast pump is made by the first airbag 32 and the second airbag 6, so that the shaking and collision generated by the breast pump during negative pressure detection avoids hard contact with other objects, thereby reducing surface damage to the breast pump.

[0036] With the above structure, it should be further explained that the second airbag 6 of the present invention is provided with a connecting strap 61, which is a soft plastic strap, and the connecting strap 61 is used to connect the two opposing sides inside the second airbag 6.

[0037] The connecting strap 61 is used to pull the center of the second airbag 6 downwards during expansion, so that the center of the second airbag 6 is concave compared to the edge during expansion. The concave center of the second airbag 6 can easily accommodate the top of the breast pump and also allows the second airbag 6 to better wrap the breast pump. This prevents the overall expansion of the second airbag 6 from pushing the top of the breast pump that it is in contact with below, which would reduce the wrapping effect of the breast pump and reduce the pushing effect on the breast pump, thus reducing the wrapping and limiting effect.

[0038] The first airbag 32 and the second airbag 6 of the present invention are made of rubber with good extensibility, and the surfaces of the first airbag 32 and the second airbag 6 are respectively good friction surfaces, which are used to increase the friction of the smooth surface of the breast pump bottle and prevent the breast pump bottle from sliding off during the process of the push plate 3 and the limiting plate 31 clamping the breast pump bottle.

[0039] The base 1 and the fixing plate 11 below are integrated; an anti-slip pad 13 is adhered to the top of the base 1.

[0040] With the above structure, it should be further explained that the fixing plate 11 of the present invention is used to provide fixing space for the four uprights 41, the anti-slip pad 13 of the present invention is made of soft rubber, and the anti-slip pad 13 is used to prevent the breast pump placed on the top from being in hard contact with the base 1 and to reduce sliding.

[0041] Two push rods 21, each passing through one of the two side plates 2, pass through the front side of one of the side plates 2. Each push rod 21 has a protrusion at its front end and a T-shaped cylindrical shaft 212 at its other end. The T-shaped cylindrical shaft 212 is located inside a bushing 211 and is matched and connected to each other. Each push rod 21 is fixedly connected to each push plate 3 by the bushing 211. A control unit 24 is located inside the side plate 2 with the two push rods 21. The control unit 24 is electrically connected to the first air pump 241 and the first air pump 242 inside the side plate 2 by a conduit. An air vent 23 is opened at the front end of the side plate 2 and is connected to the first air pump 241 and the first air pump 242 respectively. The control unit 24 is connected to the power supply 7 by a conduit. A switch 22 is also connected between the control unit 24 and the power supply 7. The switch 22 is fixed to the outside of the side plate 21. The power supply 7 is fixed inside the fixing plate 11.

[0042] With the above structure, it should be further explained that each push plate 3 of the present invention adjusts the clamping depth through each push rod 21, and each push plate 3 is connected to the first air pump 242. The first air pump 242 injects air into the first air bag 32 in each push plate 3, causing the first air bag 32 to inflate. The first air pump 241 of the present invention extracts the gas in the inflated first air bag 32, so that the second air bag 6 is restored.

[0043] The first air pump 241 and the first air pump 242 of the present invention are connected to the branched air pipe 34 by a one-way valve, resulting in gas diversion.

[0044] The air vent 23 of the present invention is an opening. The first air pump 242 of the present invention draws gas into the guide port 23 and pumps it into the first air bag 32. When the first air bag 32 needs to be restored and degassed, the first air pump 241 draws the gas in the first air bag 32 out to the air vent 23.

[0045] After the two push plates 3 and the two limit plates 31 are closed together, they form a rhombus shape; the air pipes connecting the two push plates 3 to the first air pump 241 and the first air pump 242 are spring air pipes 33, and each spring air pipe 33 is housed in a slot opened in each push plate 3; the opening connecting each limit plate 31 to the branched air pipe 34 is located below each limit plate 31; the two branched air pipes 34 are respectively housed in the base 1.

[0046] With the above structure, it should be further explained that the spring air pipe 33 connected to the two push plates 3 of the present invention and the first air pump 241 and the first air pump 242 has elasticity, thus providing gas transmission through the air pipe 33 for the two push plates 3 during movement.

[0047] The lower end of each upright post 41 is fixed with a screw to a pulley 43; the lower end of each upright post 41 is L-shaped, and the L-shaped end of each upright post 41 matches the base 1 and the fixing plate 11.

[0048] With the above structure, it should be further explained that the four pulleys 43 of the present invention are respectively located below the four uprights 41, which are used to provide a structure for moving the present invention. Each pulley 43 of the present invention is screwed into the bottom of each upright 41 by screws. The meshing connection makes it easy to replace the pulleys 43. When the present invention does not need to be moved, each pulley 42 of each upright 41 can also be removed so that the present invention stands in the set placement position.

[0049] The top unit 5 is provided with through holes 421 on the side where it is connected to the four uprights 41.

[0050] With the above structure, it should be further explained that the height of the top unit 5 of the present invention can be adjusted according to the height of the breast pump bottle to avoid the height of the top unit 5 being higher than the height of the breast pump bottle, which would prevent the second airbag 6 of the top unit 5 from not covering the top of the breast pump bottle.

[0051] The top unit 5 is a housing; the top unit 5 includes: an air inlet 51, a second suction pump 52, a second air pump 53, a mesh 54 and a fixing key 55. The air inlet 51 is located above the top unit 5, and the mesh 54 is attached to the surface of the air inlet 51. The second suction pump 52 and the second air pump 53 are installed and fixed behind the air inlet 51 and the mesh 54 and inside the top unit 5. An air pipe is provided below the second suction pump 52 and the second air pump 53, and the air pipe extends to the opening below the top unit 42.

[0052] With the above structure, it should be further explained that the second air pump 53 of the present invention draws gas from the air inlet 51 and injects it into the second airbag 6; when the second airbag 6 needs to be restored, the second air pump 52 draws gas from the second airbag 6 back to the air inlet 51.

[0053] The top unit 5 is also equipped with a negative pressure device to evacuate the internal air and thus test the negative pressure resistance of the baby bottle.

[0054] The air inlet 51 of the present invention is provided with a mesh 54, which can reduce the intake of external dust; the fixing member 55 of the present invention is used to fix the top unit 5 above the top unit base 42, and the fixing member 55 is located at the edge of the top unit 5 and is evenly distributed in four places.

[0055] A second airbag 6 is provided in the lower opening of the top base 42. The second airbag 6 is adhered to the lower opening of the top base 42. At least two air holes are provided on one side of the second airbag 6 and the lower opening of the top base 42. The two air holes of the second airbag 6 are respectively connected to the second suction pump 52 and the second air pump 53.

[0056] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A negative pressure detection device for a breast pump bottle, comprising: The base, side plates, push plates, limiting plates, bracket assembly, and top machine assembly are characterized in that: the base is provided with side plates on its front and rear sides respectively; there are two push plates and two limiting plates respectively; the two push plates are located above the base and move back and forth in a straight line along the top of the base; the bottoms of the two limiting plates are fixed above the base; and the rear sides of the two limiting plates are respectively in close contact with one of the two side plates; the top machine assembly is fixed above the base by the bracket assembly. The base has at least two sliding grooves on its upper surface, with each of the two sliding grooves corresponding to the lower surface of each of the push plates. Each of the push plates has a protrusion below it, and the protrusion matches each of the sliding grooves. Each of the push plates and each of the limiting plates has an opening on their opposite sides, and each of the push plates and each of the limiting plates has a first airbag at the opening. Each of the push plates has a push rod connected to the side away from the opening. The push rod passes through one of the two side plates from back to front and is engaged. Each of the push plates moves back and forth along each of the sliding grooves through the engagement of the push rod. A first air pump and a first air compressor are provided in the side plate at the front end of the base. The first air pump and the first air compressor are respectively provided by two limiting plates with bifurcated air pipes. The support assembly includes: uprights, a top base, pulleys, insertion holes, and pins. There are at least four uprights, which are fixed in pairs around the base. Each upright has several insertion holes longitudinally. The insertion hole at the bottom of each upright is fixed to a fixing plate below the base by a pin. Each upright has a pulley at its bottom. The insertion hole at the top of each upright is connected to the top base by a pin, and the top base is fixed between the four uprights. The top unit is fixed in the circular groove starting from the center of the top unit base, and a second airbag is provided below the top unit base.

2. The negative pressure detection device for a breast pump bottle according to claim 1, characterized in that: The base and the fixing plate below are integrally formed; An anti-slip pad is adhered to the top of the base.

3. The negative pressure detection device for a breast pump bottle according to claim 1, characterized in that: Two push rods, which pass through one of the two side plates, pass through the front side of one of the side plates respectively. Each push rod has a protrusion at its front end and a T-shaped cylindrical shaft at its other end. The T-shaped cylindrical shaft is located inside a bushing and is matched and connected to each other. Each push rod is fixedly connected to each push plate by a bushing. A control unit is provided on the inner side of the side plate with two push rods. The control unit is electrically connected to the first air pump and the first air compressor on the inner side of the side plate via a conduit. An air vent is provided at the front end of the side plate and is connected to the first air pump and the first air compressor respectively. The control unit is connected to the power supply via a conduit, and a switch is connected between the control unit and the power supply, with the switch fixed to the outside of the side panel. The power supply is fixed inside the fixing plate.

4. The negative pressure detection device for a breast pump bottle according to claim 1, characterized in that: When the two push plates and the two limiting plates are closed together, they form a rhombus shape. The air pipes connecting the two push plates to the first suction pump and the first air pump are spring air pipes, and each spring air pipe is housed in a slot opened in each push plate. The opening for connecting each limiting plate to the branch air pipe is located below each limiting plate. The two branched air pipes are respectively housed within the base.

5. The negative pressure detection device for a breast pump bottle according to claim 1, characterized in that: The pulley is fixed to the lower end of each of the uprights with screws; Each of the uprights has an L-shaped lower end, and the L-shaped end of each upright matches the base and the fixing plate.

6. The negative pressure detection device for a breast pump bottle according to claim 1, characterized in that: The top unit is provided with through holes on the side where it connects to the four uprights.

7. The negative pressure detection device for a breast pump bottle according to claim 1, characterized in that: The top unit is a housing; The top unit includes: an air inlet, a second suction pump, a second air pump, a mesh, and a fixing key. The air inlet is located above the top unit base, and the mesh is adhered to the surface of the air inlet. The second suction pump and the second air pump are installed and fixed behind the air inlet and the mesh and inside the top unit. An air pipe is provided below the second suction pump and the second air pump, and the air pipe extends to the opening below the top unit base.

8. The negative pressure detection device for a breast pump bottle according to claim 7, characterized in that: A second airbag is provided in the lower opening of the top machine base. The second airbag is adhered to the lower opening of the top machine base. At least two air holes are provided on one side of the second airbag and the lower opening of the top machine base. The two air holes of the second airbag are connected to the second suction pump and the second inflation pump, respectively.

9. The negative pressure detection device for a breast pump bottle according to claim 1, characterized in that: A pressure-resistant acrylic sheet is bonded between each of the aforementioned uprights 41.

Images