MX2008000274A - Suspension systems - Google Patents

Abstract

A wheeled luggage device includes a main body defining a compartment therein for containing goods to be transported. At least one wheel is disposed at a lower end of the body when the transport device is in an operative, inclined position. A fluid displacement system is configured to extend the wheel away from the body and/or to provide the wheel with a level of suspension.

Description

SUSPENSION SYSTEMS Field of the Invention This invention relates to suspension system. Background of the Invention Luggage devices may include wheels to make luggage transport easier for the user. Luggage devices commonly include wheels along a base of the device and a handle extending from the upper portion of the device to allow the user to carry the luggage when taking the handle and wheeled the luggage along a surface . SUMMARY OF THE INVENTION In one aspect of the invention, the wheeled transport device is configured to be wheeled manually in a tilted position by a pedestrian. The transport device includes a body and a handle extending from the body. The handle can be taken manually by the pedestrian while walking. The wheeled transport device further includes at least one wheel disposed at a lower end of the body when the transport device is in an inclined, operative position. The wheel is secured to the body for rotation along a surface on which the user walks. The wheeled transport device also includes a Ref. 188969 fluid displacement system operatively associated with the wheel so that the wheel moves away from the body when fluid is displaced within the fluid displacement system in a first direction. In a further aspect of the invention, a wheeled transport device configured to be wheeled manually in a tilted position by a pedestrian includes a body and a handle extending from the body. The handle can be taken manually by the pedestrian while walking. At least one wheel is disposed at a lower end of the body when the transport device is in an inclined, operative position. The user is assured to the body for rotation along a surface on which the user walks. A fluid suspension device is operatively associated with the wheel to provide the wheel with a level of suspension. In another aspect of the invention a wheeled luggage device configured to be wheeled manually in a tilted position by a pedestrian includes a main body defining a compartment therein to contain goods to be transported. A handle is disposed at an upper end of the body when a transport device is in an inclined position as operative. The handle can be taken manually by the pedestrian while walking. At least one wheel is disposed at a lower end of the body when the transport device is in an inclined, operative position. A suspension system secures the wheel to the body. The suspension system includes a suspension device having a member operatively associated with the wheel, and a fluid delivery device in fluid communication with the suspension device. The fluid delivery device is configured to deliver fluid to the suspension device to operate the suspension device member, which provides the wheel with a level of suspension. In a further aspect of the invention, the wheeled luggage device configured to be wheeled manually in a tilted position by a pedestrian includes a main body defining a compartment therein to contain goods to be transported. A handle is disposed at an upper end of the body when the transport device is in an inclined position as operative. The handle can be taken manually by the pedestrian while walking. The handle is adapted to retract within the body, and is configured to be fixed in one or more positions between a fully retracted first position and a fully extended second position. At least one wheel disposed at a lower end of the body when the transport device is in an inclined position as operative. A suspension device secures the wheel to the body. The suspension device is operatively associated with the wheel to provide the wheel with a level of suspension, which is a function of the position of the handle. Even in another aspect of the invention, a suspension system for a wheel of a wheel transport device includes a suspension device. The suspension device includes a fluid-tight cylinder, a piston disposed movably within the fluid-tight cylinder, a member attached to the piston and operatively associated with the wheel, and a fluid delivery device in fluid communication with the cylinder. fluid tight. The fluid delivery device is configured to deliver fluid within a first region of the fluid-tight cylinder on a first side of the piston shaft, and within the second region of the fluid-tight cylinder on a second axial side of the piston. The modalities may include one or more of the following characteristics. In some embodiments, the fluid displacement system is operatively associated with the wheel so that the wheel moves towards the body when the fluid within the fluid displacement system moves in a second direction. In certain embodiments, the wheeled transport device further includes a member extending from the wheel. The member is configured to move the wheel in relation to the body when the fluid is displaced within the fluid displacement system. In some embodiments, the fluid displacement system includes a fluid cylinder, and the member includes a first end movably positioned within the fluid cylinder and a second end attached to the wheel. In certain embodiments, the first end of the member is disposed within the fluid cylinder in a substantially fluid-tight configuration. In some embodiments, the member includes a piston. In certain embodiments, the handle is movable between at least a first position and a second position. In some embodiments, the first position is a fully retracted position of the handle, and the second position is a fully extended position of the handle. In certain embodiments, the fluid displacement system includes a fluid cylinder operatively associated with the movable handle so that moving the handle displaces fluid within the fluid displacement system, thereby moving the wheel. In some embodiments, the wheel is prevented from moving substantially toward the body after the wheel extends away from the body at a predetermined distance. In some embodiments, the fluid suspension device includes a pneumatic suspension device. In certain embodiments, the fluid suspension device includes a hydraulic suspension device. In some embodiments, the wheeled transport device includes a luggage device. In certain embodiments, the wheeled transport device includes a plurality of wheels, each of the wheels being operatively associated with an independent fluid suspension device. In some embodiments, the handle is foldable for storage. In certain embodiments, the handle is telescopic. In some embodiments, the wheel interconnects with the collapsible handle, so that the wheel retract when the handle is folded.

In certain embodiments, the wheeled transport device further includes a member associated with the suspension device for changing the suspension level. In some embodiments, the member includes the handle, and the movable handle between the plurality of positions. In certain embodiments, the level of suspension is a function of the position of the handle. In some modalities, the handle is configured to extend and retract, and the level of suspension increases as the handle extends and decreases while the handle retracts. In certain embodiments, the handle is configured to be fixed in each of the plurality of positions. In some embodiments, the handle is configured to be fixed in at least 3 different positions. In certain embodiments, the fluid suspension device includes a member connected to the wheel. In some embodiments, the wheeled transport device further includes a fluid delivery device in fluid communication with the suspension device, and the fluid delivery device is configured to drive the suspension device member.

In certain embodiments, the member is configured to be placed in a plurality of axial positions, each of the axial positions resulting in a different level of suspension. In some embodiments, the wheeled transport device further includes a valve positioned between a fluid delivery device and the suspension device, the valve that is configured to adjust a flow area between the fluid delivery device and the delivery device. suspension. In certain embodiments, the suspension device includes a first piston disposed movably within a first cylinder, and the member is attached to the first piston. In some embodiments, the fluid delivery device is configured to deliver the fluid to a first side of the first piston to move the member in a first axial direction, and to a second side of the first piston to move the member in a second axial direction. In certain embodiments, the level of suspension is a function of the axial position of the member. In some embodiments, the fluid delivery device includes a second piston movably disposed with a second cylinder, and a first end region of the first cylinder is in fluid communication with a second cylinder. first end region of the second cylinder, and a second end region of the first cylinder is in fluid communication with a second end region of the second cylinder. In certain embodiments, the first and second cylinders are connected fluidly to one another with the first and second hoses. In some embodiments, the wheel is configured to retract in body. In certain embodiments, the wheel is configured to retract when the member is actuated. In some embodiments, the handle is movable between at least a first position and a second position, and movement of the handle causes the fluid to be transferred from the fluid delivery device to the suspension device. In certain embodiments, the fluid delivery device comprises a piston movably disposed within a cylinder, and the handle is attached to the piston. In some embodiments, the wheel extends when the handle is in the first position and the wheel retracts when the handle is in the second position. In certain embodiments, the handle includes a locking feature that is constructed to cooperate with a body locking mechanism to retain the handle in one or more intermediate positions to the first and second pistons. In one embodiment, the wheeled transport device further includes a wheel-driven electric generator that generates electrical energy while the device is transported on wheels along the surface. In certain embodiments, the wheel has an elastic outer member that directly contacts the surface on which it is transported on wheels of the device. In some embodiments, the wheeled transport device is in combination with multiple interchangeable wheels of different properties. In certain embodiments, the handle is configured to be fixed in a plurality of different positions. In some embodiments, the wheeled luggage device further includes a fluid delivery device in fluid communication with the suspension device, and the fluid delivery device is configured to deliver fluid to the suspension device. In certain embodiments, the fluid delivery device is operatively attached to the handle. In some embodiments, the suspension device includes a pneumatic suspension device. The modalities may include one or more of the following advantages.

In some embodiments, the wheeled transport device (e.g., the baggage device) includes a suspension system (e.g., a pneumatic suspension system). This can help to stabilize the luggage device during transport. The suspension system can, for example, it helps prevent baggage from falling from impacts to one or more of the wheels caused by rough surfaces, obstructions, and / or sudden changes in elevation, such as stairs and curbs. This can improve alternatively or additionally the comfort of the user. The suspension system, for example, can help reduce vibrations transferred from the handle to the user's hand during transport. In certain embodiments, the luggage device includes a handle and / or wheels that are retractable. This can help to improve the ease with which the luggage device can be stored in confined spaces, such as overhead storage compartments of the aircraft, storage lockers for airport rental, and domestic cabinets. The size of the luggage device, for example, can be reduced and / or the number of potential impediments that protrude from the luggage can be reduced. Other characteristics and advantages will be evident from the description, the figures, and the claims. Brief Description of the Figures Figure 1 is a side cross-sectional view of one embodiment of a wheeled luggage device with a handle and wheel in a retracted position. Figure 2 is a cross-sectional, side view of the wheeled luggage device of Figure 1 with the handle and the wheel in an extended position. Figure 3 is a side cross-sectional view of the wheeled luggage device of Figure 1 with the handle and the wheel in an extended position, and arranged in a position for transport. Figure 4 is a cross-sectional, rear view of a modality of the wheeled luggage device with a suspension system including an adjustable valve. Figure 5 is a side cross-sectional view of a modality of a wheeled luggage device with a retractable handle and a suspension system including a retractable member. Similar reference symbols in the various figures indicate similar elements. Detailed Description of the Invention Figure 1 shows a luggage device 100 in a stored configuration. The luggage device 100 includes a body portion 10 that includes a cavity in which the goods can be contained (eg, clothes). The luggage device 100 further includes a suspension system 130 having a fluid delivery device 118 and a suspension device 120 which are fluidly connected to each other by hoses 122 and 123. The fluid delivery device 118 is operatively connected to the handle 12, and the suspension device 120 is operatively joined to a wheel assembly 128. As described below, the retraction and expansion of the handle 112 can function to retract and extend, respectively, the wheel assembly 114. The retraction and extension of the handle 12 can also increase and decrease, respectively, the level of suspension (e.g., the effective spring coefficient) provided by the suspension system 130. The handle 112, as shown in Figure 1, is shown in FIG. collapses in the body portion 110 of the luggage device 100 on a telescopic rail as is usual in the luggage industry with wheels with the grasping member grasping flush with the upper surface of the bag. A member 113 extends from the lower end of the handle 112 and is attached to a piston 119 within the fluid delivery device 118. In that way, the piston 119 can move along the longitudinal axis of the piston. fluid delivery device 118 in response to movement (eg, extension or retraction) of handle 112, as discussed below. By briefly referring to Figure 3, the handle 112 includes multiple teeth 126 along its length. The teeth 126 may cooperate with a locking mechanism 124 of the body 110 in order to retain the handle 112 in a fixed extended position. The teeth 126, for example, may contact a mating surface of the closing mechanism 124, to prevent the handle 112 from extending beyond a predetermined point. The teeth 126 alternatively or additionally may cooperate with locking mechanism surfaces 124 to prevent the handle 112 from retracting beyond a predetermined point. While the locking mechanism 124 was described as a tooth coupling mechanism, the locking mechanism can be any device capable of retaining the handle 112 in a fixed ancial position. Examples of locking mechanisms include friction devices (eg, cams, rollers and clutches, clamps and collars, magnets, magnetic assemblies), interference devices (eg, snaps, ratchets, locks, hook fasteners and rings), couplings of fluid, and thermal clutches, among other mechanisms. Alternatively or additionally, any of several materials, such as magnetorheological fluid may used to help provide closing action. Referring again to Figure 1, the wheel assembly 114 includes a wheel 127 that is retractably attached to a wheel housing 128. Wheel 127, for example, can be arranged on a shaft or shaft extending from the wheel housing 128. The wheel 127 may be formed of any of several types of materials, such as plastics and / or metals. In certain embodiments, the wheel is formed of an elastomeric material and includes molded internal ribs that deform elastically when loaded, providing both effective spring-loading of the load and providing system wetting. In some embodiments, the luggage device includes multiple interchangeable wheels. In certain embodiments, the wheel 127 may be one of a number of interchangeable wheels, each of which has different mechanical properties that perform the suspension of the baggage device 100. In such embodiments, for example, the user may select a wheel based on in various factors that can perform the suspension of baggage device 100, such as size of baggage device 100, weight, of baggage device 100, and load distribution within baggage device 100. A member 129 extends from the housing of wheel 128 and is attached to a piston 121 disposed within the suspension device 20. In that way the piston 121 can move along the longitudinal axis of the suspension device 120 in response to inward or outward movement of the wheel assembly 114 (e.g., wheel housing 128 of the wheel assembly 1149, as discussed below, the wheel housing 128 is attached to the body portion 110 with a hinge 116. The wheel housing 128 is configured to rotate or rotate on the hinge 16 so that the wheel assembly 14 can be retracted in the body portion 110, as shown in Figure 1, or extending away from the body portion 110, as shown in Figure 2. The handle 112 and the wheel 14 are operatively connected to each other by the suspension system 130. As discussed above, the suspension system 130 includes fluid delivery devices 118, suspension device 120, and hoses 122 and 123 that fluidly connect the device. or fluid delivery 118 to the suspension device 120. As shown in Figure 1, the fluid delivery device 118 includes a cylinder 15 in which the piston 119 is disposed movably. example, air-tight) is formed between the outer surface of the piston 119 and the inner surface of the cylinder 115. The cylinder 15 includes a first fluid passage 140 in the inner region of the cylinder 115 (e.g., in the region of cylinder 15 closest to an upper wall 175 of the luggage device 100), and includes a second fluid passage 142 in the lower region of the cylinder 15 (e.g., in the region of the cylinder 15 closer to a lower wall 180 of the luggage device 100). The hoses 122 and 123 are joined to the first and second fluid passages 140 and 142 with a fluid-tight seal. The hoses 122 and 123 may be formed of any of several materials, such as plastic, rubber, and / or metal. Any of several techniques can be used to join hoses 122 to fluid passages 140 and 142. For example, hoses 122 can be attached to fluid passages 140 and 142 that use screw couplings, brake balls and / or rings, couplings with tines, stamped fittings, welded connections with copper and / or welds, thermal shrinkage, adhesives, and / or sealed snap couplings. As discussed above, the member 13 joins the piston 119 to the handle 112. Thus, while the handle 112 moves axially (eg, extended or retracted), the piston 119 can also be displaced axially. The displacement of piston 119 within cylinder 115 causes the piston fluid (e.g., air) within the cylinder to be forced out of the cylinder and into hose 122 or hose 123 (depending on the direction of the piston displacement 19) through one of the fluid passages 140 and 142. The fluid exiting the cylinder 115 is transferred to the suspension device 120 through the hose in which it is forced. The suspension device 120 includes a cylinder 125 in which the piston 121 is disposed movably. The piston 121 forms a fluid-tight seal (eg, air-tight) with the cylinder 125 in a manner similar to that described above with respect to the piston 19 and the cylinder 115 of the fluid delivery mechanism 18. The member 129 is extends from the piston 121 and joins the wheel housing 128. The member 129, for example, can be rotatably joined to the wheel housing 128. Due to the union of the member 129 to the wheel housing 128, the piston 121 can move axially in response to movement of the wheel assembly 114 (e.g., wheel housing 128 of the wheel assembly 114), and vice versa. The cylinder 125 includes the first and second fluid passages 150 and 152 in their end regions, on opposite side-sides of the piston 121. The first fluid passage 150, for example, is disposed in the end region of the cylinder 125 closest of a front wall 185 of the luggage device 100, and the second fluid passage 152 is disposed in the end region of the cylinder 125 plus close to a rear wall 190 of the luggage device 100. The hoses 122 and 123 are connected to fluid passages 150 and 152, respectively. As a result, a closed fluid ring is formed between the fuel delivery device 118 and the suspension device 120. In this way, the fluid can be transferred between the various components of the suspension system 130 (eg, between the device of fuel delivery 18 and suspension device 120), but it is generally prevented that the fluid escapes from the system. As shown in Figure 1, when the handle 12 retracts into the body 110, the piston 119 is positioned in the end region of the cylinder 115 near the fluid passage 142, and the piston 121 is positioned in the end region. of the cylinder 125 near the fluid passageway 150. When the handle 112 extends to the transport position, as shown in Figure 2, the piston 119 follows the handle 112 upward, which expels some fluid through the passageway. fluid 140. The expelled fluid is forced through the hose 122 which causes some fluid contained within the system to enter the suspension device 120 through the fluid passageway 150. While the fluid enters the cylinder 1254 of the suspension device 120, the piston 121 is forced towards the opposite end of the cylinder 125 (for example, towards the wheel assembly 114).

As a result, it causes the wheel assembly 114 to extend (eg, rotate) outward, away from the body 110. With the wheel assembly 114 in the extended position, it can provide support for transporting the luggage device 100. The wheel 127, for example, I can contact the ground and have space to move up and down on its axis while applying loads by interaction with the ground surface. Figure 3 shows the luggage device 100 in a transport orientation, as when pulled by the user. The handle 112 and the wheel assembly 114 are in the extended position, and the body 110 is disposed at an inclined angle relative to the floor surface. The body 110, for example, may be arranged at an acute angle (eg, approximately 15 degrees to approximately 75 degrees) in relation to the floor surface. The forces applied to the wheel 127 (for example, by the floor surface) can be absorbed by the suspension device 120 in this configuration. When the handle 112 is extended, it can be fixed in a desired position (for example, when using the closure mechanism 124). With the handle 112 in the closed position, the piston 14 or the fuel delivery device 118 are similarly held in a fixed axial position within the cylinder 115 so that the volume occupied by the suspension fluid between the fuel delivery device 118 and suspension device 120 (eg, between piston 119 of fuel delivery device 18 and piston 121 of suspension device 120) is substantially constant. In this configuration, an impact on the wheel 114 (for example, by the floor surface) acts on the piston 121 and compresses the suspension fluid between the pistons 121 and 119 through the hose 122. Consequently, a large part of the the energy that results from the impact is dissipated before it transfers to the body 110 of the baggage device 100. In that way, the amount of vibration energy transferred to the user by the body 110 (for example, through the handle 112) can be reduced . Similarly, due to the dissipation of energy by the suspension system 130, less energy is available to create a decaying torsional force, and thus the likelihood that the luggage device 100 falls can be reduced. In some embodiments, the level of suspension provided by the suspension system 130 can be altered by altering the position of the handle 112. The level of suspension can, for example, be increased by increasing the amount extending to the handle 112, and / or can be decreased by decreasing the amount extending to the handle 112. In certain embodiments, an extension of the handle 112 deploys the wheel assembly 114, as shown in FIG. described earlier. After the wheel assembly 14 is fully deployed, any further extension of the handle 12 can compress the fluid in the hose 122, which can increase the level of suspension (e.g., the effective spring activation speed) provided to the assembly. wheel 114 to accommodate a larger scale of weights or loads within the luggage. By using the closure mechanism 124, the handle 112 can be fixed in a position corresponding to a desired level of suspension. By closing the handle 12, the desired suspension level or effective spring activation speed can be maintained substantially during use. The effective spring activation speed of the suspension system 130, for example, can vary from about 2 pounds to about 200 pounds (e.g., about 2 pounds to about 100 pounds, about 2 pounds to about 50 pounds, about 2 pounds a approximately 25 pounds). In order to convert the luggage device 100 of its transport configuration (shown in Figure 3) into its storage configuration (shown in Figure 1), the handle 12 is pushed into the body 110. This leads to the piston 119 of the storage device. delivery of fuel 118 to the fluid passage 142. As a result, the fluid is forced through the hose 123 and into the delivery device. suspension 120 through the fluid passage 152, which causes the piston 119 to move axially towards the opposite end of the cylinder 125 (eg, away from the wheel assembly 114). Accordingly, the wheel assembly 114 retracts into the body 110. While various modalities were described, other embodiments are possible. As an example, while the wheeled transport device was described as a wheeled luggage device, the alternate wheeled transport device or additionally may be any of several other wheeled devices that are capable of being transported (e.g. push) by the user. Examples of such devices include pull-down trucks, trolleys, dollies, garbage containers, golf carts, charcoal or gas grills, mixers, landscaping carts and backpacks, mosquito-catching machines with wheels, lounge chairs wait, portable tables and other outdoor equipment. As another example, while the suspension fluid of the above embodiments was described as being air, any of several other alternative or additional fluid types may be used. Examples of other types of fluid include water, oil, gases (eg, nitrogen), alcohol, and various petroleum derivatives.

As a further example, in some embodiments, the suspension system includes a valve positioned between the suspension device and the fluid delivery device. The valve can be used to readjust the load carrying capacity of the suspension device. As shown in Figure 4, for example, a valve 195 connects the hose 122 to the cylinder 125 of the suspension device 120. The valve 195 can be adjusted to vary the area through which air is allowed to pass between the cylinder 125. and the tube 122. By controlling the flow area, the flow velocity can be modified. The speed at which the initial pressure acting on the piston 121 changes in response to external forces acting on the wheels, for example, may increase as the flow area decreases. Similarly, the speed at which the initial pressure acting on the piston 121 changes in response to external forces acting on the wheels may decrease as the flow rate increases. Therefore, the valve 195 can be adjusted to provide the level of suspension response desired by the user. The user, for example, can adjust the valve based on the type of terrain in which the baggage device is to be used and / or the weight of the baggage device and its contents. The valve 195 can be any of several types of valve devices. Examples of such devices include rotary valves (eg, multi-hole rotary valves), screw valves, opening valves, and plug valves. Alternatively or additionally, an insert having a hole may be placed inside the tube 122 in order to alter the flow area. The hole of the insert can be of any of several shapes and sizes. As a further example, while the baggage device 100 was described as having a wheel assembly 14, the baggage device may include two or more wheel assemblies. In some embodiments, each of the wheel assemblies is operatively associated with an independent suspension system. The suspension systems may be similar (eg, identical) to the suspension system 130 described above. In certain embodiments, the suspension systems have different suspension devices and hoses, but share a common fluid delivery device. The common fluid delivery device, for example, can include two different pairs of air passage. Similarly, two different groups of hoses, one of which leads to one of the wheel assemblies and the other leads to the other of the wheel assemblies. Alternatively or additionally, the common fluid delivery device may include an individual inlet and / or outlet. Individual entry and / or exit can be combined fluid form to a valve T, which can direct the fluid to multiple suspension devices. As a further example, while the above embodiments describe the handle of the luggage device as part of the suspension system, other mechanisms independent of the handle can be used to control the suspension system. As shown in Figure 5, for example, the luggage device 200 includes a retractable handle 210 in addition to a suspension system 230 that includes a retractable member 212. The suspension system 230 is similar to the suspension system 130 described above. . The level of suspension, for example, can be modified by extending or retracting the retractable member 212 very similar to how the level of suspension provided by the suspension system 130 can be modified by extending or retracting the handle 112. However, due to the configuration of the suspension system 230, the suspension of the luggage device 200 can advantageously be controlled independently of the retractable handle 213. The handle 213, for example, can be adjusted to any of several different positions without substantially affecting the level of suspension provided for the luggage device 200. Accordingly, the user can select a desired carry position of the handle without modifying the level of suspension of the luggage device. As another example, while the above embodiments involve luggage devices with human energy, alternative or additional luggage devices may have machine power. In some embodiments, for example, the luggage device includes an electric motor, a power source, and a generator. Energy can be transferred from the generator to the power source and then from the power source to the engine where it can be used to turn the wheel. Alternatively or additionally the generator can be used to provide power to any of several electronic devices with the luggage device. Examples of baggage devices that include generators are described in the U.S. Patent Application. No. 60 / 599,360, filed August 6, 2004, and entitled "Electrical Power Generation," which is incorporated herein by reference. Other embodiments are in the claims. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims (37)

1. Claims Having described the invention as above, the content of the following claims is claimed as property: 1. A transport device with wheels configured to be transported manually on wheels in a position inclined by a pedestrian, characterized in that it comprises: a body; a handle that extends from the body, the handle can be manually grasped by the pedestrian while walking; at least one wheel disposed at a lower end of the body when the transport device is in an inclined position, the wheel operating which is secured to the body for rotation along a surface on which the user walks; and a fluid displacement system operatively associated with the wheel so that the wheel moves away from the body when the fluid within the fluid displacement system moves a first direction.
2. 2. The transport device with wheels according to claim 1, characterized in that the wheeled transport device comprises a luggage device with wheels.
3. 3. - The transport device with wheels of according to claim 1, characterized in that the fluid displacement system is operatively associated with the wheel so that the wheel moves towards the body with the fluid within the fluid displacement system moving in a second direction.
4. 4. - The transport device with wheels according to claim 1, characterized in that it further comprises a member extending from the wheel, the member that is configured to move the wheel in relation to the body when the fluid within the displacement system of fluid moves.
5. 5. - The transport device with wheels according to claim 4, characterized in that the fluid displacement system comprises a fluid cylinder, and the member comprises a first end positioned movably inside the fluid cylinder and a second end attached to the wheel.
6. 6. - The transport device with wheels according to claim 5, characterized in that the first end of the member is arranged inside the fluid cylinder in a substantially hermetic configuration of the fluid.
7. 7. The transport device with wheels according to claim 4, characterized in that the member comprises a piston.
8. 8. - The transport device with wheels according to claim 1, characterized in that the handle is movable between at least one fully retracted position and a fully extended position.
9. 9. - The transport device with wheels according to claim 8, characterized in that the fluid displacement system comprises a fluid cylinder operatively associated with the movable handle so that when moving the handle fluid moves inside the movement device of fluid, with which the wheel moves.
10. 10. The transport device with wheels according to claim 1, characterized in that the wheel is prevented from moving substantially towards the body after the wheel extends away from the body at a predetermined distance.
11. 11. A transport device with wheels configured to be transported on wheels manually in a tilted position by a pedestrian, characterized in that it comprises: a body; a handle that extends from the body, the handle can be manually grasped by the pedestrian while walking; at least one wheel disposed at a lower end of the body when the transport device is in a inclined, operative position the wheel that is secured to the body for rotation along a surface on which the user walks; and a fluid suspension device operatively associated with the wheel to provide the wheel with a level of suspension.
12. 12. The transport device with wheels in accordance with claim 11, characterized in that the fluid suspension device comprises a pneumatic suspension device.
13. 13. The transport device with wheels according to claim 11, characterized in that the transport device with rudas comprises a luggage device.
14. 14. The transport device with wheels according to claim 11, characterized in that the wheeled transport device comprises a plurality of wheels, each of the wheels that is operatively associated with an independent fluid suspension device.
15. 15. The transport device with wheels according to claim 11, characterized in that the handle is foldable.
16. 16. The transport device with wheels according to claim 11, characterized in that the The wheel is interconnected to the handle, so that the wheel retract when the handle is folded.
17. 17. The transport device with wheels according to claim 11, characterized in that it also comprises a member associated with the suspension device and configured to change the level of suspension.
18. 18. The transport device with wheels according to claim 17, characterized in that the member comprises the handle, the handle that is movable between a plurality of positions.
19. 19. - The transport device with wheels according to claim 18, characterized in that the level of suspension is a function of the position of the gripper.
20. 20. The transport device with wheels according to claim 19, characterized in that the handle is configured to extend and retract, and wherein the level of suspension increases while the handle extends and decreases while the handle retracts.
21. 21. The transport device with wheels according to claim 18, characterized in that the handle is configured to be fixed in each of the plurality of positions.
22. 22. - The transport device with wheels according to claim 21, characterized in that the The handle is configured to be fixed in at least three different positions.
23. 23. The transport device with wheels according to claim 11, characterized in that the fluid suspension device comprises a support member, the wheel that is connected to the support member.
24. 24. The transport device with wheels according to claim 23, characterized in that the support member is configured to be placed in a plurality of acial positions, each of the axial portions resulting in a different level of suspension.
25. 25. The transport device with wheels according to claim 23, characterized in that it further comprises a fluid delivery device in fluid communication with the suspension device, the fluid delivery device configured to drive the support member.
26. 26. The transport device with wheels according to claim 25, characterized in that it also comprises a valve placed between the defined delivery device and the suspension device, the valve that is configured to adjust a flow area between the device fluid delivery and suspension device.
27. 27.- The transport device with wheels of according to claim 23, characterized in that the suspension device comprises a first piston disposed movably inside a first cylinder, the support member which is attached to the first piston.
28. 28. The transport device with wheels according to claim 27, characterized in that the fluid delivery device is configured to deliver the fluid to a first side of the first piston to move the support member in a first axial direction, a second side of the first piston for moving the support member in a second axial direction.
29. 29. The transport device with wheels according to claim 28, characterized in that the level of suspension is a function of the axial position of the support member.
30. 30. The transport device with wheels according to any of claim 27, characterized in that the fluid delivery device comprises a second piston disposed movably within a second cylinder, a first region the end of the first cylinder that is in fluid communication with a first end region of the second cylinder, and a second end region of the first cylinder that is in fluid communication with a second end region of the second cylinder.
31. 31. - The transport device with wheels according to claim 30, characterized in that the first and second cylinder are connected fluidly to one another with the first and second hose.
32. 32. The transport device with wheels according to claim 23, characterized in that the wheel is configured to retract in the body.
33. 33.- The transport device with wheels according to claim 23, characterized in that the handle is movable between at least a first position and a second position, and wherein the movement of the handle causes the fluid to be transferred from the device delivery of fluid to the suspension device.
34. 34. The transport device with wheels according to claim 33, characterized in that the fluid delivery device comprises a mobile piston arranged inside a cylinder, the handle that is attached to the piston. The transport device with wheels according to claim 33, characterized in that the wheel extends when the handle is in the first position and the wheel retracts when the handle is in the second position. 36.- The transport device with wheels according to claim 35, characterized in that the The handle comprises a closing feature that is constructed to cooperate with a body closing mechanism for retaining the handle in one or more positions intermediate the first and second positions. 37.- The suspension system for a wheel of a transport device with wheels, characterized in that it comprises: a fluid-tight cylinder; a piston disposed movably within the fluid-tight cylinder; a member attached to the piston and operatively associated with the wheel; and a fluid delivery device in fluid communication with the fluid-tight cylinder, the fluid delivery device that is configured to deliver fluid within a first region of the fluid-tight cylinder on the first axial side of the piston, and within of a second region of the fluid-tight cylinder on a second axial side of the piston.