BACKGROUND
Inflatable shelters, in general, provide temporary enclosures for indoor and outdoor sports, construction sites, commercial storage, and recreational purposes. Conventional inflatable shelters utilize complex rigid or inflatable support structures that are difficult to manufacture. For example, conventional inflatable shelters comprise fiberglass poles for support structures, which when bent into an arch provide a supporting framework for the exterior fabric skin or canopy of the shelter. Furthermore, conventional inflatable shelters are generally manufactured and assembled in such a way that once damaged, the entire shelter must be replaced. Another drawback of conventional inflatable shelters is that the support structures used for these shelters are only suitable for building shelters having smaller dimensions due to load constraints. The shelters may be erected as small units not larger than about 20 meters in width or diameter. When larger shelters having inflatable support structures are erected, the inflatable support structures may wrinkle, buckle and even collapse under snow or high wind loads. Current rigid or inflatable systems do not address the need for a relatively larger pneumatically inflatable structure that can withstand and support heavy loads, and that may be readily transportable in that, when collapsed or deflated, the structure is not exceedingly heavy or overly bulky.
Hence, there is a long felt but unresolved need for an inflatable enclosure that can be easily erected to provide a shelter for different applications that require small to large shelter spans, and that provides a weather seal under outdoor conditions.
SUMMARY OF THE INVENTION
This summary is provided to introduce a selection of concepts in a simplified form that are further described in the detailed description of the invention. This summary is not intended to identify key or essential inventive concepts of the claimed subject matter, nor is it intended for determining the scope of the claimed subject matter.
The inflatable enclosure and the method for erecting the inflatable enclosure disclosed herein addresses the above stated need for providing a firm and stable inflatable shelter for different applications that require small to large shelter spans, and for providing a weather seal under outdoor conditions. The inflatable enclosure disclosed herein may be manufactured in smaller sections that are assembled to build a relatively larger pneumatically inflatable structure that can withstand and support heavy loads, and that may be easily transportable and maneuverable, when disassembled or collapsed.
The inflatable enclosure disclosed herein comprises an inflatable middle section and one or more inflatable end sections abutting opposing ends of the inflatable middle section to enclose a space for which the enclosed space is desired, for example, a sports court, an exhibition, a conference, etc. Each of the inflatable middle section and the inflatable end sections comprises an inflatable structural framework. The inflatable structural framework comprises a network of pneumatically interconnected inflated beams. The network of pneumatically interconnected inflated beams defines one or more openings of predetermined shapes in the inflatable structural framework. The network of pneumatically interconnected inflated beams comprises one or more inflated longitudinal beams pneumatically interconnected with one or more inflated transverse beams to define the inflatable structural framework. Each of the longitudinal beams and the transverse beams defines an enclosed annular space for receiving a fluid, for example, air, to inflate each of the longitudinal beams and the transverse beams. The inflatable middle section and the inflatable end sections are assembled to create the inflatable enclosure. The inflatable middle section and the inflatable end sections of the inflatable enclosure are inflated and anchored to a ground surface for spanning or enclosing a predefined area on the ground surface. The inflatable middle section, when assembled and erected, is generally arcuate in shape. Each of the inflatable end sections also defines an end wall for the inflatable enclosure.
The inflatable enclosure disclosed herein further comprises multiple tile members the dimensions of which are configured to allow the tile members to be inserted in the openings in the inflatable structural framework of each of the inflatable middle section and the inflatable end sections and to plug and sealably encase the openings when the tile members are inflated in the inflatable structural framework. Each of the tile members defines an enclosed annular space for receiving a fluid, for example, air, to inflate each of the tile members. The enclosed annular space within each of the tile members is inflated prior to, or inflated after insertion of the tile members into the openings in the inflatable structural framework to plug and sealably encase the openings in the inflatable structural framework. The tile members when inflated contiguously secure the tile members with the pneumatically interconnected inflated beams in the inflatable structural framework, to provide multidimensional structural strength and stability to the inflatable structural framework and to minimize deformation of the inflatable structural framework under load.
Each of the tile members comprises an inflatable cell structure and an apron membrane. The apron membrane defines a periphery around the inflatable cell structure. The inflatable cell structure of each of the tile members comprises a multidimensional array of one or more inflatable air cells. The inflatable cell structure defines an enclosed annular space within each of the air cells of the inflatable cell structure for receiving a fluid, for example, air, to inflate the inflatable cell structure. The inflatable cell structure of each of the tile members is inserted in one or more of the openings in the inflatable structural framework to plug the openings. The enclosed annular space within each of the air cells of the inflatable cell structure of each of the tile members is inflated prior to insertion of the inflatable cell structure into the openings in the inflatable structural framework. In an embodiment, the inflatable cell structure of each of the tile members is inflated after insertion of the inflatable cell structure into the openings in the inflatable structural framework. The inflatable cell structure positioned within the openings of the inflatable structural framework provides multidimensional strength and stability to the inflatable structural framework, when inflated. In an embodiment, one or more of the tile members are opposably positioned within each of the openings in the inflatable structural framework to create an insulating weather seal for the inflatable enclosure.
In an embodiment, one or more pneumatic sensors are operably connected to one or more of the pneumatically interconnected inflated beams of the inflatable structural framework for monitoring internal air pressure of the inflatable structural framework of the inflatable enclosure. A pneumatic pump, in communication with the pneumatic sensors, maintains a constant internal air pressure within the inflatable structural framework of the inflatable enclosure. In another embodiment, an outer membranous sheath is provided for enclosing the inflatable enclosure and the tile members for providing a smooth weatherproof finish to the inflatable enclosure.
The weather resistant tile members securely inserted in the openings in the inflatable structural framework of the inflatable enclosure enable versatility of the inflatable enclosure for different weather conditions. Other advantages of the inflatable enclosure disclosed herein comprise, for example, rapid deployment, aerodynamically designed shape and structure for wind sheer, low opacity of the tile members to allow natural light inside the inflatable enclosure, etc.
BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing summary, as well as the following detailed description of the invention, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, exemplary constructions of the invention are shown in the drawings. However, the invention is not limited to the specific methods and instrumentalities disclosed herein.
FIGS. 1A-1B exemplarily illustrate perspective views of an inflatable enclosure.
FIG. 1C exemplarily illustrates a side orthogonal view of the inflatable enclosure.
FIG. 2 exemplarily illustrates a front orthogonal view of the inflatable enclosure.
FIG. 3 exemplarily illustrates a top view of the inflatable enclosure.
FIG. 4 exemplarily illustrates a partial internal view of the inflatable enclosure.
FIG. 5 exemplarily illustrates a partial view of an inflatable structural framework of the inflatable enclosure, showing positioning of a tile member in one of the openings of the inflatable structural framework.
FIG. 6A exemplarily illustrates a cross sectional view of a deflated tile member of the inflatable enclosure.
FIG. 6B exemplarily illustrates a bottom perspective view of an inflated tile member of the inflatable enclosure.
FIG. 6C exemplarily illustrates a cross sectional view of the inflated tile member of the inflatable enclosure.
FIG. 7 exemplarily illustrates a pneumatic system for maintaining internal air pressure of the inflatable structural framework of the inflatable enclosure.
FIG. 8 exemplarily illustrates a perspective view of the inflatable enclosure enveloped by an outer membranous sheath.
FIGS. 9A-9B exemplarily illustrate partial views of the inflatable enclosure of FIG. 8, showing an entryway in the middle section of the inflatable enclosure.
FIG. 10 illustrates a method for erecting the inflatable enclosure.
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1A-1B exemplarily illustrate perspective views of an inflatable enclosure 100. The inflatable enclosure 100 disclosed herein is a temporary airframe enclosure erected on a ground surface 108 for different applications and activities such as living, entertainment, sports, manufacturing, storage, recreation, etc. As exemplarily illustrated in FIGS. 1A-1B, the inflatable enclosure 100 comprises an inflatable middle section 102 and one or more inflatable end sections 101 and 103 abutting opposing ends 102a and 102b of the inflatable middle section 102 to enclose a space 401 for which the inflatable enclosure 100 is designed for, for example, a sports court, an exhibition, etc., as exemplarily illustrated in FIG. 4. The inflatable middle section 102 is generally arcuate in shape. Each of the inflatable middle section 102 and the inflatable end sections 101 and 103 comprises an inflatable structural framework 104. The inflatable structural framework 104 comprises a network of pneumatically interconnected inflated beams 104a and 104b. The network of pneumatically interconnected inflated beams 104a and 104b defines one or more openings 104c of predetermined shapes, for example, rectangular shapes, square shapes, etc., in the inflatable structural framework 104. Each of the beams 104a and 104b defines an enclosed annular space (not shown) for receiving a fluid, for example, air, to inflate each of the beams 104a and 104b. The enclosed annular space of each of the beams 104a and 104b is inflated, for example, by compressed air through a one-way valve in communication with the enclosed annular space, which is well known in the art.
As exemplarily illustrated in FIG. 1A, the inflatable enclosure 100 further comprises multiple tile members 105 the dimensions of which generally match the inner dimensions of the openings 104c in the inflatable structural framework 104 of each of the inflatable middle section 102 and the inflatable end sections 101 and 103 when the tile members 105 are inflated. Each of the tile members 105 defines an enclosed annular space 105d for receiving a fluid, for example, air, to inflate each of the tile members 105 as exemplarily illustrated in FIGS. 6A-6C. The enclosed annular space 105d of each of the tile members 105 is inflated prior to insertion of the tile members 105 into the openings 104c in the inflatable structural framework 104. In an embodiment, the tile members 105 are positioned in the openings 104c in the inflatable structural framework 104 and thereafter inflated to plug and sealably encase the openings 104c to form a contiguous structure with the pneumatically interconnected inflated beams 104a and 104b in the inflatable structural framework 104 to provide multidimensional structural strength and stability to the inflatable structural framework 104 and to minimize deformation of the inflatable structural framework 104 under load. The tile members 105, when inserted in the openings 104c, provide structural support for maintaining the shape of the inflatable structural framework 104, and hence the shape of the inflatable enclosure 100. The tile member 105 is constructed, for example, of a ceramic, a plastic such as a high density polyethylene, etc.
FIG. 1C exemplarily illustrates a side orthogonal view of the inflatable enclosure 100. The inflatable enclosure 100, when assembled and erected, is generally arcuate in shape. Each of the inflatable end sections 101 and 103 also defines an end wall 106 for the inflatable enclosure 100. The inflatable enclosure 100 is accessible through one or more entryways 107.
FIG. 2 exemplarily illustrates a front orthogonal view of the inflatable enclosure 100. The network of pneumatically interconnected inflated beams 104a and 104b comprises one or more inflated longitudinal beams 104b pneumatically interconnected with one or more inflated transverse beams 104a to define the inflatable structural framework 104. As used herein, pneumatic interconnection of the inflated longitudinal beams 104b and the inflated transverse beams 104a refers to a fluid tight sealing of the inflated longitudinal beams 104b and the inflated transverse beams 104a to create a network or grid of the inflated beams 104a and 104b, where the inflated beams 104a and 104b of the inflatable structural framework 104 of each of the inflatable middle section 102 and the inflatable end sections 101 and 103 are in fluid communication with each other. The inflated beams 104a and 104b are, for example, sealed tubes made from airtight materials and stiffened by internal air pressure, and are pneumatically interconnected to form a network or grid of inflated beams 104a and 104b. The inflated beams 104a and 104b are manufactured from an easy to assemble and durable plastic, for example, polyvinyl chloride (PVC).
FIG. 3 exemplarily illustrates a top view of the inflatable enclosure 100. As exemplarily illustrated in FIGS. 1A-1C and FIGS. 2-3, the inflatable enclosure 100 incorporates an aerodynamic design and structure to minimize wind sheer and provide stability, and also to provide ease of manufacture and use. For example, the inflated longitudinal beams 104b of the end wall 106 defined by each of the inflatable end sections 101 and 103 also serve as buttresses to stabilize the structure of the inflatable enclosure 100, thereby eliminating the need for cross bracing of the inflatable structural framework 104. The inflatable enclosure 100 also defines curved side walls 201 and a roof 202 to facilitate aerodynamic air flow over the side walls 201 and the roof 202. The inflatable enclosure 100 is free of sharp corners, thereby eliminating buffeting wind vortexes that may otherwise make the inflatable enclosure 100 unstable.
FIG. 4 exemplarily illustrates a partial internal view of the inflatable enclosure 100. The inflatable structural framework 104 of each of the inflatable middle section 102 and the inflatable end sections 101 and 103 is assembled to create the inflatable enclosure 100 to enclose a space 401. The inflatable middle section 102 and the inflatable end sections 101 and 103 of the inflatable enclosure 100 are inflated and anchored to the ground surface 108 for spanning across or enclosing a predefined area on the ground surface 108. The inflatable enclosure 100 is held in place on the ground surface 108 using techniques of ground anchorage known in the art. The inflatable structural framework 104 of the inflatable enclosure 100 is pneumatically stiffened to support a load, for example, a cover, a weatherproof roof, etc.
FIG. 5 exemplarily illustrates a partial view of the inflatable structural framework 104 of the inflatable enclosure 100, showing positioning of a tile member 105 in one of the openings 104c of the inflatable structural framework 104. The inflatable enclosure 100 comprises multiple tile members 105 that are inserted in the openings 104c in the inflatable structural framework 104 and thereafter pneumatically inflated to an appropriate pressure to plug and sealably encase the openings 104c in the inflatable structural framework 104. In an embodiment, the enclosed annular space 105d of each of the tile members 105, as exemplarily illustrated in FIGS. 6A-6C, is inflated prior to insertion into the openings 104c in the inflatable structural framework 104. The inflated tile members 105 plug and sealably encase the openings 104c in the inflatable structural framework 104.
An embodiment of the tile member 105 of the inflatable enclosure 100 is exemplarily illustrated in FIG. 5. In another embodiment, one or more of the tile members 105 are opposably positioned within each of the openings 104c in the inflatable structural framework 104 to create an insulating weather seal for the inflatable enclosure 100. Thermal or weather insulation is achieved by maintaining an air gap between the opposing tile members 105 positioned within the openings 104c in the inflatable structural framework 104. The tile members 105 are modular and fit in the openings 104c of the inflatable structural framework 104 from the inner surface and from the outer surface of the inflatable structural framework 104.
FIG. 6A exemplarily illustrates a cross sectional view of a deflated tile member 105 of the inflatable enclosure 100. Each of the tile members 105 comprises an inflatable cell structure 105a and an apron membrane 105b. The apron membrane 105b constitutes and defines a periphery around the inflatable cell structure 105a. The inflatable cell structure 105a comprises a multidimensional array of one or more inflatable air bubbles or cells 105c as illustrated in FIGS. 6A-6C. The inflatable cell structure 105a defines an enclosed annular space 105d within each of the cells 105c of the inflatable cell structure 105a for receiving a fluid, for example, air, to inflate the inflatable cell structure 105a through a one-way valve in communication with the enclosed annular space 105d which is well known in the art. The inflatable cell structure 105a shown in FIG. 6A is the configuration of the inflatable cell structure 105a when deflated.
FIG. 6B exemplarily illustrates a bottom perspective view of an inflated tile member 105 of the inflatable enclosure 100. The inflatable cell structure 105a of the tile member 105 shown in FIGS. 6B-6C is the configuration of the inflatable cell structure 105a when inflated. The enclosed annular space 105d of each of the cells 105c of the inflatable cell structure 105a is inflated to an appropriate pneumatic pressure prior to insertion, or after insertion of the inflatable cell structure 105a into the openings 104c in the inflatable structural framework 104. In an embodiment, the enclosed annular space 105d of each of the cells 105c of the inflatable cell structure 105a of each of the tile members 105 is inflated by compressed air from a commercial hand pump or an electric pump. Inflating the enclosed annular space 105d by compressed air is well known in the art. The air fills the enclosed annular space 105d of each of the cells 105c of the inflatable cell structure 105a, thereby inflating the inflatable cell structure 105a. The enclosed annular space 105d of each of the cells 105c of the inflatable cell structure 105a may be optionally inflated with other gases that are lighter than air and/or non-inflammable, for example, nitrogen. The inflatable cell structure 105a when inserted in each of the openings 104c in the inflatable structural framework 104 plugs and sealably encases each of the openings 104c, and provides structural support for maintaining the shape of the inflatable structural framework 104, and hence the shape of the inflatable enclosure 100. The dimensions of the tile member 105, specifically the outer dimensions of the inflatable cell structure 105a that plug into the openings 104c in the inflatable structural framework 104, matches the inner dimensions of the openings 104c such that the inflatable cell structure 105a when inflated forms a tight fit seal within the openings 104c.
FIG. 6C exemplarily illustrates a cross sectional view of the inflated tile member 105 of the inflatable enclosure 100. As exemplarily illustrated in FIG. 1A and FIG. 5, the inflatable cell structure 105a of the tile member 105, when positioned within the openings 104c in the inflatable structural framework 104, and inflated pneumatically to an appropriate pressure, plugs and sealably encases the openings 104c to provide multidimensional structural strength and stability to the inflatable structural framework 104. The inflation pressure of the tile member 105 causes the inflatable air cells 105c of the inflatable cell structure 105a to expand tightly against the inflated beams 104a and 104b of the inflatable structural framework 104 circumjacent to the tile member 105 in the opening 104c, and vice versa. The tile form of the tile member 105 is maintained by inflating the inflatable cell structure 105a to a pressure of, for example, about 0.5 bar. The pressure of the tile member 105 ensures that the inflatable cell structure 105a maintains a tight fitting configuration in the opening 104c and provides resistance against bending or buckling of the inflated beams 104a and 104b circumjacent to the opening 104c. The tight fit between the inflated tile member 105 and the inflated beams 104a and 104b provides an airtight seal around the tile member 105.
The apron membrane 105b forms a single continuous periphery for the inflatable cell structure 105a as illustrated in FIG. 5 and FIG. 6B. The apron membrane 105b overlaps the inflated beams 104a and 104b circumjacent to the opening 104c into which the inflatable cell structure 105a of each tile member 105 is positioned. The apron membrane 105b provides additional insulation to prevent atmospheric air from leaking in to the inflatable enclosure 100 or out of the inflatable enclosure 100. The apron membrane 105b is made from a material similar to that of the inflatable cell structure 105a. For example, the tile member 105 is manufactured from elastomers such as thermoplastic polyurethanes (TPU) with a wide range of hardness grades. The urethane material of the tile member 105 has high abrasion resistance, oil resistance, low temperature flexibility, and superior load-bearing capability. Additives for the urethane material of the tile member 105 improve dimensional stability and heat resistance, reduce surface friction, and enhance flame retardant property, fungus resistance and weather ability of the tile member 105. As exemplarily illustrated in FIG. 5, the tile member 105 is positioned within each of the openings 104c in the inflatable structural framework 104 by fastening the apron membrane 105b to the inflated longitudinal beams 104b and the inflated transverse beams 104a of the inflatable structural framework 104 of the inflatable enclosure 100.
The tile members 105 of the inflatable enclosure 100 are made from elastomers that exhibit low opacity such that the tile members 105 allow, for example, 80% of natural light inside the inflatable enclosure 100 during daytime. To provide lighting during dusky conditions, the inflated beams 104a and 104b of the inflatable structural framework 104 may support artificial lighting systems to provide sufficient lighting inside the inflatable enclosure 100.
FIG. 7 exemplarily illustrates a pneumatic system 700 for maintaining internal air pressure of the inflatable structural framework 104 of the inflatable enclosure 100. The pneumatic system 700 comprises one or more pneumatic sensors 701 and a pneumatic pump 702. The internal air pressure in the inflatable structural framework 104 of each of the inflatable middle section 102 and the inflatable end sections 101 and 103 of the inflatable enclosure 100 is maintained by a mechanism referred to as air on demand (AoD). As used herein, the term “air on demand” refers to a mechanism whereby a constant internal air pressure is maintained in the inflatable structural frameworks 104 of the inflatable enclosure 100 by the pneumatic sensors 701 that enable control of intermittent delivery of air or other fluid gases from the pneumatic pump 702 connected to pneumatic inlets 703 on the inflatable structural frameworks 104. The pneumatic sensors 701 are operably connected to one or more of the pneumatically interconnected inflated beams 104a and 104b of the inflatable structural framework 104. The pneumatic sensors 701 monitor the internal air pressure of the inflatable structural framework 104. The pneumatic pump 702 comprises, for example, a pneumatic inlet regulator 702a for controlling the intermittent delivery of air into the enclosed annular space of each of the beams 104a and 104b of the inflatable structural framework 104. The pneumatic sensors 701 continuously monitor the internal air pressure in the inflatable structural framework 104 of the inflatable enclosure 100. The pneumatic pump 702, in communication with the pneumatic sensors 701, maintains a constant internal air pressure within the inflatable structural framework 104 of the inflatable enclosure 100. In an embodiment, the enclosed annular space of each of the beams 104a and 104b of the inflatable structural framework 104 may be optionally inflated with other gases that are lighter than air and/or non-inflammable, for example, nitrogen. The pneumatic system 700 monitors and maintains the pressure of these gases in the inflatable structural framework 104 of the inflatable enclosure 100.
FIG. 8 exemplarily illustrates a perspective view of the inflatable enclosure 100 enveloped by an outer membranous sheath 801. The outer membranous sheath 801 encloses the entire structure of the inflatable enclosure 100, including the tile members 105, thereby providing a smooth weatherproof finish to enhance, for example, ultraviolet (UV) protection and lifespan of the inflatable enclosure 100. The smooth finish provided by the outer membranous sheath 801 also enhances the aerodynamics and integrity of the inflatable enclosure 100. In an embodiment, the outer membranous sheath 801 may have one or more gaps 801c to account for the entryways 107 in the inflatable middle section 102 and/or the end walls 106 of the inflatable end sections 101 and 103. In another embodiment, one or more smaller prefabricated sheaths 801a and 801b are fastened together on-site and then enveloped over the inflatable middle section 102 and the inflatable end sections 101 and 103 of the inflatable enclosure 100 before inflating the inflatable enclosure 100. The outer membranous sheath 801 may be over 80% transparent or translucent to allow natural light through to the tile members 105 and inside the inflatable enclosure 100.
As exemplarily illustrated in FIGS. 1A-1C and FIG. 3, the inflatable enclosure 100 incorporates an aerodynamic design and structure to minimize wind sheer, and provide stability, and ease of manufacture and use. As exemplarily illustrated in FIG. 8, the outer membranous sheath 801 provides raking end walls 106 for creating a smooth air flow over the end walls 106. The outer membranous sheath 801 over the inflatable enclosure 100 also provides smooth and curved side walls 201 and a smooth roof 202 to facilitate smooth air flow over the side walls 201 and the roof 202.
As exemplarily illustrated in FIG. 8, the inflatable enclosure 100 is accessible through one or more entryways 107. In an embodiment, the inflatable enclosure 100 comprises an inflatable pressurized door provided at the entryway 107 in the end wall 106 that provides weather proof shielding and additional structural stability to the entryway 107 for long-term applications. In another embodiment, the inflatable enclosure 100 comprises, for example, a polyvinyl chloride (PVC) Velcro® flap provided at the entryway 107 for closing the entryway 107.
FIGS. 9A-9B exemplarily illustrate partial views of the inflatable enclosure 100 of FIG. 8, showing an entryway 107 with a Velcro flap in the middle section 102 of the inflatable enclosure 100. The Velcro flap is provided at the entryway 107 for closing the entryway 107.
FIG. 10 illustrates a method for erecting the inflatable enclosure 100. An inflatable enclosure 100, as disclosed in the detailed description of FIGS. 1A-1C and FIGS. 3-5, is provided 1001. The inflatable enclosure 100 comprises an inflatable middle section 102 and one or more inflatable end sections 101 and 103 configured to abut the inflatable middle section 102. Each of the inflatable middle section 102 and the inflatable end sections 101 and 103 comprises an inflatable structural framework 104. The inflatable middle section 102 and the inflatable end sections 101 and 103 of the inflatable enclosure 100 are inflated 1002 by inflating the enclosed annular space of each of the beams 104a and 104b of the inflatable structural framework 104 of each of the inflatable middle section 102 and the inflatable end sections 101 and 103. The network of pneumatically interconnected inflated beams 104a and 104b defines one or more openings 104c of predetermined shapes in the inflatable structural framework 104. The inflatable middle section 102 and the inflatable end sections 101 and 103 are assembled 1003 by abutting the inflatable end sections 101 and 103 against the opposing ends 102a and 102b of the inflatable middle section 102, and anchored 1003 to a ground surface 108.
The inflatable enclosure 100 further comprises tile members 105 as exemplarily illustrated in FIG. 5 and FIGS. 6B-6C. The tile members 105 are configured to be removably and securably inserted in one or more openings 104c in the inflatable structural framework 104 of each of the inflatable middle section 102 and the inflatable end sections 101 and 103. One or more of the tile members 105 are inserted 1004 in the openings 104c in the inflatable structural framework 104 of each of the inflated middle section 102 and the inflated end sections 101 and 103. The enclosed annular space 105d of each of the tile members 105 is inflated to an appropriate pressure prior to insertion, or inflated after insertion into the openings 104c in the inflatable structural framework 104 to plug and sealably encase the openings 104c in the inflatable structural framework 104. The tile members 105 when inflated to an appropriate pressure in the openings 104c in the inflatable structural framework 104 provide multidimensional structural strength and stability to the inflatable structural framework 104 and create an insulating weather seal for the inflatable enclosure 100. The inflatable enclosure 100, when inflated and erected, is generally arcuate in shape. The inflatable structural framework 104 of each of the inflated middle section 102 and the inflated end sections 101 and 103 are anchored to the ground surface 108 for spanning or enclosing a predefined area on the ground surface 108.
Consider an example, where a sports court is required to be enclosed using the inflatable enclosure 100 disclosed herein. The position of the yet-to-be assembled inflatable enclosure 100 is marked on a ground surface 108, making special note of anchor positions. The anchors are then inserted into the marked anchor positions on the ground surface 108. The inflatable middle section 102 and the inflatable end sections 101 and 103 are rolled out and set in position. The inflatable middle section 102 and the inflatable end sections 101 and 103 are fastened together by threading a connecting lacing such that the inflatable middle section 102 and the inflatable end sections 101 and 103 are disposed adjacent to each other when inflated, as exemplarily illustrated in FIGS. 1A-1C. The inflatable middle section 102 and the inflatable end sections 101 and 103 are then test inflated using a high pressure pneumatic pump 702 or fast inflation fans, and sealed with the tile members 105. The test operation is performed to ensure that the inflatable middle section 102 and the inflatable end sections 101 and 103 are well connected and straight. The inflatable middle section 102 and the inflatable end sections 101 and 103 are again deflated for placing and fastening the outer membranous sheath 801. The smaller sheaths 801a and 801b of the outer membranous sheath 801 are laid out on the inflatable enclosure 100 one after the other, starting with the roof 202 of the inflatable middle section 102 followed by the side walls 201, while fastening the smaller sheaths 801a and 801b to one another. The same procedure is followed for laying out the smaller sheaths 801a and 801b on the roof 202, the side walls 201, and the end walls 106 of each of the inflatable end sections 101 and 103. The cover flaps for the entryways 107 are then laced in place. The inflatable enclosure 100 is inflated again using the high pressure pneumatic pump 702 or fast inflation fans.
In an embodiment, the roof 202 of the inflatable middle section 102 and/or the inflatable end sections 101 and 103 are separately inflated from the side walls 201 and the end walls 106 of these sections 101, 102, and 103. This requires that the inflated beams 104a and 104b constituting the roof 202 are pneumatically isolated or sealed off from the beams 104a and 104b that form part of the side walls 201 and the end walls 106. This allows easier access to the inflated roof 202 for laying out the outer membranous sheath 801 over the inflated roof 202 while the side walls 201 remain deflated. The side walls 201 are thereafter inflated via separate pneumatic inlets 703 to raise the inflatable enclosure 100 to its full height.
Master anchors, for example, in-ground anchors having helical anchorage are set in place and connected to the inflatable enclosure 100. Alternatively, one or more sand bags or water filled tubes are provided along the lower edge of the inflatable enclosure 100 to hold the inflatable enclosure 100 in position. The outer membranous sheath 801 is tied down to minor sheathing anchorages set in place, and the doors are anchored in position at the entryways 107. When the inflatable enclosure 100 is secure, the maintenance fans, for example, the low pressure pneumatic pumps 702 and the pneumatic sensors 701 are integrated to the inflated beams 104a and 104b of the inflatable enclosure 100 and tested by releasing some pressure. The tile members 105 are positioned in the openings 104c in the inflatable structural framework 104 before inflating the inflatable enclosure 100 into erection and thereafter inflated to an appropriate pressure to plug, seal, and encase the openings 104c. In an embodiment, the pressure in the tile members 105 is maintained by pneumatically connecting each of the tile members 105 to one or more adjacent inflated beams 104a and 104b.
For the purpose of illustration, although the detailed description of FIGS. 1A-1C and FIGS. 2-8 refers to a single inflatable middle section 102 abutting two inflatable end sections 101 and 103, the scope of the inflatable enclosure 100 disclosed herein is not limited to an inflatable enclosure 100 having a single inflatable middle section 102 but may extend to include one or more inflatable middle sections 102 abutting one another and assembled between one or more of the inflatable end sections 101 and 103 to construct an inflatable enclosure 100 spanning a greater area of the ground surface 108 depending on the purpose or application. Moreover, the inflatable middle section 102 and the inflatable end sections 101 and 103 may be manufactured as a unified or integrated single inflatable enclosure 100 that can be inflated and erected at once, eliminating the need for assembling the inflatable sections 101, 102, and 103 adjacent to one another. A single integrated enclosure 100 may be suitable for applications that require a smaller covering area, for example, camping shelters.
The foregoing examples have been provided merely for the purpose of explanation and are in no way to be construed as limiting of the present invention disclosed herein. While the invention has been described with reference to various embodiments, it is understood that the words, which have been used herein, are words of description and illustration, rather than words of limitation. Further, although the invention has been described herein with reference to particular means, materials, and embodiments, the invention is not intended to be limited to the particulars disclosed herein; rather, the invention extends to all functionally equivalent structures, methods and uses, such as are within the scope of the appended claims. Those skilled in the art, having the benefit of the teachings of this specification, may effect numerous modifications thereto and changes may be made without departing from the scope and spirit of the invention in its aspects.
Patent Application
20120131857
