US20110209416A1 - Pneumatic node for compression elements - Google Patents

Pneumatic node for compression elements Download PDF

Info

Publication number
US20110209416A1
US20110209416A1 US13/014,574 US201113014574A US2011209416A1 US 20110209416 A1 US20110209416 A1 US 20110209416A1 US 201113014574 A US201113014574 A US 201113014574A US 2011209416 A1 US2011209416 A1 US 2011209416A1
Authority
US
United States
Prior art keywords
pneumatic structural
connecting element
structural element
hollow body
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/014,574
Inventor
Mauro Pedretti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Prospective Concepts AG
Original Assignee
Prospective Concepts AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Prospective Concepts AG filed Critical Prospective Concepts AG
Priority to US13/014,574 priority Critical patent/US20110209416A1/en
Assigned to PROSPECTIVE CONCEPTS AG reassignment PROSPECTIVE CONCEPTS AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PEDRETTI, MAURO
Publication of US20110209416A1 publication Critical patent/US20110209416A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00Tents or canopies, in general
    • E04H15/20Tents or canopies, in general inflatable, e.g. shaped, strengthened or supported by fluid pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/50Flanged connections
    • F16B2200/503Flanged connections the flange being separate from the elements to be connected
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/50Flanged connections
    • F16B2200/506Flanged connections bolted or riveted
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/34Branched
    • Y10T403/341Three or more radiating members
    • Y10T403/342Polyhedral
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/34Branched
    • Y10T403/347Polyhedral

Definitions

  • the present invention relates to a joint element for pneumatic structural elements and associated connecting elements.
  • Joint elements for non-pneumatic structural elements are known per se, for example going by the name of MERO systems.
  • the task of these joint elements is to introduce tensile and compressive forces, in a manner free of bending moments, into framework structures.
  • a pneumatic structural element is known, for example, from European Patent Application 01 903 559.1 of the same inventor.
  • the operation of connecting the structural element described in this document to a joint using known means is not without problems since bending moments produced from the reaction to bearing pressure cannot be completely avoided without excessive outlay in respect of auxiliary structural means.
  • the object of the present invention is to provide a joint element which allows the tensile, compressive and bearing forces to be brought together without the occurrence of local bending moments and which, furthermore, also allows the bearing forces to be introduced into known and conventional structural elements.
  • FIG. 1 a is a side elevational view of a prior art pneumatic structural element
  • FIG. 1 b is a front cross-sectional view of the prior art pneumatic structural element of FIG. 1 a;
  • FIG. 2 is a perspective view of a first exemplary embodiment of a joint element
  • FIG. 3 is a first longitudinal section view of the first exemplary embodiment of FIG. 2 ;
  • FIG. 4 is a second longitudinal section view of the first exemplary embodiment of FIG. 2 ;
  • FIG. 5 is a longitudinal section of a second exemplary embodiment
  • FIG. 6 is a perspective view of a third exemplary embodiment
  • FIG. 7 is a longitudinal section view of a fourth exemplary embodiment
  • FIG. 8 is a perspective view of a first connecting element
  • FIG. 9 is a perspective view of a second connecting element
  • FIG. 10 is a perspective view of a third connecting element
  • FIG. 11 is a perspective view of a fourth connecting element
  • FIG. 12 is a perspective view of a fifth connecting element
  • FIG. 13 is a perspective view of a sixth connecting element.
  • FIG. 14 is a perspective view of a seventh connecting element.
  • FIG. 1 a is a schematic side view of a pneumatic structural element 1 according to the prior art. It comprises a sleeve 2 , a compression member 3 and two tension members 4 .
  • the sleeve 2 is produced from a woven textile fabric which does not expand to a great extent and is either coated in a gas-tight manner or is provided internally with a flexible gas tube which is made of elastic polymer material and performs the sealing function.
  • the compression member 3 as can be seen from FIG. 1 b , has been pushed, for example, into a pocket 6 , running along the sleeve 2 and fastened thereon by sewing and sealing, welding or adhesive bonding, and it extends over the entire, essentially cylindrical, length of the sleeve 2 .
  • the compression member 3 is fixed to the ends of the two tension members 4 , which are positioned in opposite helical directions around the sleeve 2 and abut tightly there. They may be drawn through lugs 7 fastened on the sleeve 2 in order for their position to be defined even when the sleeve 2 is slack. Joints 8 form the connecting locations of the compression member 3 and tension members 4 .
  • the sleeve 2 is closed by two spherical caps 5 , for example made of the same material as the sleeve 2 .
  • FIG. 2 is the perspective illustration of a first exemplary embodiment of the joint element according to the invention.
  • the latter comprises a plate 9 with a large opening 10 for the spherical cap 5 of the pneumatic structural element 1 .
  • the plate 9 here is, for example, of square configuration and contains four lots of holes 11 , 12 .
  • the four holes 12 are located in the center of a row of holes in each case.
  • the compression member 3 is fastened, for example, with a screw 15 , as can be seen from FIG. 3 ;
  • FIG. 3 is the longitudinal section AA through the illustration of FIG. 2 ;
  • FIG. 4 is the longitudinal section along section plane BB.
  • the bores of the holes 11 run, for example, obliquely through the plate 9 .
  • three holes 11 to the left and right of the compression member 3 are occupied by in each case one cable 16 .
  • These in each case three cables 16 are guided parallel to one another and, together, form the tension member 4 described in relation to FIG. 1 .
  • the cables 16 are secured in the plate 9 by nuts 17 , as is known from the technology of prestressing cables for reinforced-concrete structures.
  • the holes 11 , 12 which are occupied here are located on a straight line. Since the stressing of the cables 16 is equalized, the only bending moment is produced in the plate 9 itself; however, none is diverted to the pneumatic structural element.
  • force arrows are designated F A .
  • F A force arrows
  • the vectors of the compressive forces, which are exerted by the compression member 3 , of the tensile forces, which are produced by the cables 16 , and of the bearing forces may be added together in the plate 9 to give zero, without bending moments being produced in the compression member 3 .
  • Possible materials for the plate 9 are, for example, aluminum, glass fiber reinforced plastics, carbon fiber reinforced plastics or multi-layered plywood.
  • FIG. 5 illustrates, as a second exemplary embodiment, a further configuration of the first exemplary embodiment.
  • the plate 9 once again, has the large opening 10 , albeit of particular design: in a first portion 18 , the opening 10 is of a cylindrical configuration and contains a first O-ring groove 19 with a first O-ring 20 . The latter provides sealing against the outside of the cylindrical part of the sleeve 2 .
  • the first cylindrical portion 19 is adjoined by a second portion 21 , which essentially has the form of the spherical cap 5 located in the opening 10 .
  • a cover 22 modeled, for example, on the spherical cap 5 is provided here. It is also possible—depending on expediency—for this cover to be formed in some other way; it is only its essentially conical or spherical profile within the second portion 21 which is essential to the invention.
  • the cover 22 is likewise cylindrical and, there, contains an O-ring groove 23 with a second O-ring 24 , which provides sealing against the inside of the cylindrical part of the sleeve 2 .
  • the sleeve 2 is clamped in between the plate 9 and the cover 22 , in the conical or spherical part 21 of the opening, by the cover 22 , and the latter is forced against the plate 9 by the positive pressure prevailing in the sleeve 2 .
  • the sealing function is performed, as has been described, by the two O-rings 20 , 24 .
  • the rest of the plate 9 may be configured in accordance with FIGS. 2 , 3 and 4 .
  • cover 22 instead of being of spherical configuration, to have some other, for example planar, form, along with corresponding reinforcement of the wall.
  • FIG. 6 A third exemplary embodiment of the joint element according to the invention is illustrated in FIG. 6 . It is provided for a pneumatic structural element 1 with a plurality of—in this case eight—compression members 3 and, by way of example, two tension members 4 per compression member 3 .
  • the plate 9 here is designed as a round flange 27 with a large opening 10 for the spherical cap 5 of the pneumatic structural element 1 .
  • the flange 27 contains, in accordance with the number of compression members 3 , holes 12 for the screws 15 for fastening the compression members 3 .
  • the flange 27 contains holes 11 for fastening the tension members 4 .
  • the flange 27 does not contain any further holes.
  • the flange 27 for fastening on further static structures and for the introduction of supporting forces, the flange 27 , or a round plate 9 in general, can be clamped into a plate 28 , as is illustrated in section in FIG. 7 .
  • the plate 28 here contains, for example, a circular opening 31 for accommodating the flange 27 .
  • a further, for example circular plate 29 contains an opening 32 .
  • Both plates 28 , 29 are provided with a circular shoulder 33 which fits with the necessary amount of accuracy over the flange 27 and accommodates the latter.
  • screws 30 By means of screws 30 , the two plates 28 , 29 can be fastened in a force-fitting and form-fitting manner on one another.
  • the external form of the plate 28 may be round, quadrilateral or polygonal, depending on the structural and design-related requirements. It may, furthermore, contain a multiplicity of holes 34 for fastening the pneumatic structural element 1 on further static structures and for introducing supporting and bearing forces.
  • the plate 9 according to FIGS. 2 , 3 , 4 and 5 may be of circular configuration and to be encased by means of the plates 28 , 29 described in relation to FIG. 7 .
  • plates 9 , 28 can be used for connecting elements according to FIGS. 8 , 9 , 10 and 11 , as is shown hereinbelow. If one or, at most, four pneumatic structural elements 1 is or are to be positioned, for example, on a column 40 , as is illustrated in FIG. 8 , then use may be made, for example, of a cubic connecting element 41 .
  • the plates 9 , 28 are screwed onto the suitably designed connecting element 41 .
  • the pneumatic structural elements are only illustrated schematically; this is not associated with any restriction in their design.
  • FIG. 9 A variant of this is shown in FIG. 9 .
  • a connecting element 42 of triangular cross section for connecting, at most, three pneumatic structural elements 1 .
  • FIG. 10 The exemplary embodiment of FIG. 10 is conceived for connecting, at most, six pneumatic structural elements 1 .
  • a connecting element 43 has a hexagonal horizontal projection with preferably square side surfaces. Designing the side surfaces as squares has the advantage that, if the pneumatic structural elements 1 are equipped with four, eight or twelve compression members 3 , there is no need to ensure correct orientation. If, however, a certain orientation is to be maintained, then this can be made certain by the provision of a protuberance 44 , as is illustrated in FIG. 9 .
  • connecting elements 41 , 42 and 43 their horizontal projection may be defined as polygonal, the bottom and top surfaces of the connecting elements 41 , 42 and 43 being of equal magnitude and the pneumatic structural elements 1 fastened thereon all being located in the same plane.
  • FIG. 11 shows a further exemplary embodiment of a planar arrangement of pneumatic structural elements 1 .
  • the, for example, square plates 9 , 28 are screwed one beside the other to a carrying element (not illustrated).
  • Such carrying elements as structures which are known per se, do not form a constituent part of the invention.
  • This arrangement can be used to produce, for example, a roof surface.
  • FIGS. 12 , 13 and 14 are illustrations of non-planar arrangements.
  • FIG. 12 shows a connecting element 45 which is, for example, of curved configuration. It is, furthermore, configured such that it can perform the function of the plate 28 , that is to say the connecting element 45 here has five circular openings 31 and, for example, six holes for screws 30 per opening 31 .
  • the further plate 29 which belongs to each pneumatic structural element 1 , but is not illustrated in FIG. 12 , is screwed to the connecting element 45 .
  • a plurality of pneumatic structural elements are connected to a connecting element 46 which is configured as a polyhedron—in this case an octahedron.
  • the pneumatic structural elements are attached to the connecting element 46 in the same way as has been explained in relation to FIG. 12 .
  • each plate 9 , 28 it is also possible for each plate 9 , 28 to be in the form of the corresponding side of the polyhedron, in which case the polyhedron is then configured essentially from bars which form its edges.
  • FIG. 14 a plurality of, for example six, planar plates 47 are joined together by welding, or by screw connections (not illustrated), to form a pyramid-like connecting element 48 which is open at the top.
  • Each plate 47 has, for example, the function of a plate 28 according to FIG. 7 .
  • the plates 9 according to FIG. 2 it is likewise possible for the plates 9 according to FIG. 2 to be formed such that they correspond to the plates 47 according to FIG. 14 .
  • the connecting element 48 then comprises, for example, as has already been explained analogously in relation to FIG. 13 , bars, which form the edges of the connecting element 48 , to which the plates 47 , for example, are screwed.

Abstract

A joint element for a pneumatic structural element. The joint element includes a sleeve, a compression member, two tension members and two spherical caps. In each case one joint element is fitted for the spherical caps. The joint elements serve for introducing tensile and compressive forces, in a manner free of bending moments, into the pneumatic structural element. The joint element has holes for fastening the compression member with a screw, on the one hand, and holes for accommodating the tension members, on the other hand. The symmetrical arrangement of the holes ensures that the vectors of bearing forces and of the tensile and compressive forces in the joint element added together give zero and, furthermore, the bending moments occur symmetrically in relation to the compression members. Configuring the joint element as a plate ensures that torques are neither introduced from the outside nor diverted to the outside.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application is a continuation of U.S. patent application Ser. No. 10/517,787. U.S. patent application Ser. No. 10/517,787 is a national-stage application of International Patent Application No. PCT/CH2003/00020. International Patent Application No. PCT/CH2003/000207 was filed on Mar. 31, 2003. International Patent Application No. PCT/CH2003/000207 claims priority from Swiss Patent Application No. 1042/02, which was filed on Jun. 19, 2002. U.S. patent application Ser. No. 10/517,787, International Patent Application No. PCT/CH2003/000207, and Swiss Patent Application No. 1042/02 are each incorporated herein by reference.
  • BACKGROUND OF THE INVENTION
  • 1. Technical Field
  • The present invention relates to a joint element for pneumatic structural elements and associated connecting elements.
  • 2. History of the Related Art
  • Joint elements for non-pneumatic structural elements are known per se, for example going by the name of MERO systems. The task of these joint elements is to introduce tensile and compressive forces, in a manner free of bending moments, into framework structures. A pneumatic structural element is known, for example, from European Patent Application 01 903 559.1 of the same inventor. The operation of connecting the structural element described in this document to a joint using known means, however, is not without problems since bending moments produced from the reaction to bearing pressure cannot be completely avoided without excessive outlay in respect of auxiliary structural means.
  • The object of the present invention is to provide a joint element which allows the tensile, compressive and bearing forces to be brought together without the occurrence of local bending moments and which, furthermore, also allows the bearing forces to be introduced into known and conventional structural elements.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • A more complete understanding of the device of the present invention may be obtained by reference to the following Detailed Description, when taken in conjunction with the accompanying Drawings, wherein:
  • FIG. 1 a is a side elevational view of a prior art pneumatic structural element;
  • FIG. 1 b is a front cross-sectional view of the prior art pneumatic structural element of FIG. 1 a;
  • FIG. 2 is a perspective view of a first exemplary embodiment of a joint element;
  • FIG. 3 is a first longitudinal section view of the first exemplary embodiment of FIG. 2;
  • FIG. 4 is a second longitudinal section view of the first exemplary embodiment of FIG. 2;
  • FIG. 5 is a longitudinal section of a second exemplary embodiment;
  • FIG. 6 is a perspective view of a third exemplary embodiment;
  • FIG. 7 is a longitudinal section view of a fourth exemplary embodiment;
  • FIG. 8 is a perspective view of a first connecting element;
  • FIG. 9 is a perspective view of a second connecting element;
  • FIG. 10 is a perspective view of a third connecting element;
  • FIG. 11 is a perspective view of a fourth connecting element;
  • FIG. 12 is a perspective view of a fifth connecting element;
  • FIG. 13 is a perspective view of a sixth connecting element; and
  • FIG. 14 is a perspective view of a seventh connecting element.
  • DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS OF THE INVENTION
  • Various embodiments of the present invention will now be described more fully with reference to the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, the embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
  • FIG. 1 a is a schematic side view of a pneumatic structural element 1 according to the prior art. It comprises a sleeve 2, a compression member 3 and two tension members 4. The sleeve 2 is produced from a woven textile fabric which does not expand to a great extent and is either coated in a gas-tight manner or is provided internally with a flexible gas tube which is made of elastic polymer material and performs the sealing function. The compression member 3, as can be seen from FIG. 1 b, has been pushed, for example, into a pocket 6, running along the sleeve 2 and fastened thereon by sewing and sealing, welding or adhesive bonding, and it extends over the entire, essentially cylindrical, length of the sleeve 2. At its ends, the compression member 3 is fixed to the ends of the two tension members 4, which are positioned in opposite helical directions around the sleeve 2 and abut tightly there. They may be drawn through lugs 7 fastened on the sleeve 2 in order for their position to be defined even when the sleeve 2 is slack. Joints 8 form the connecting locations of the compression member 3 and tension members 4.
  • At its ends, the sleeve 2 is closed by two spherical caps 5, for example made of the same material as the sleeve 2.
  • FIG. 2 is the perspective illustration of a first exemplary embodiment of the joint element according to the invention. The latter comprises a plate 9 with a large opening 10 for the spherical cap 5 of the pneumatic structural element 1. The plate 9 here is, for example, of square configuration and contains four lots of holes 11, 12. The four holes 12 are located in the center of a row of holes in each case. In the hole 12 of the top row of holes in FIG. 2, the compression member 3 is fastened, for example, with a screw 15, as can be seen from FIG. 3; FIG. 3 is the longitudinal section AA through the illustration of FIG. 2; FIG. 4 is the longitudinal section along section plane BB. The bores of the holes 11 run, for example, obliquely through the plate 9. In the exemplary embodiment according to FIG. 2, in each case three holes 11 to the left and right of the compression member 3 are occupied by in each case one cable 16. These in each case three cables 16 are guided parallel to one another and, together, form the tension member 4 described in relation to FIG. 1. The cables 16 are secured in the plate 9 by nuts 17, as is known from the technology of prestressing cables for reinforced-concrete structures. The holes 11, 12 which are occupied here are located on a straight line. Since the stressing of the cables 16 is equalized, the only bending moment is produced in the plate 9 itself; however, none is diverted to the pneumatic structural element.
  • In FIGS. 2 and 3, force arrows are designated FA. These relate to the bearing forces. The vectors of the compressive forces, which are exerted by the compression member 3, of the tensile forces, which are produced by the cables 16, and of the bearing forces may be added together in the plate 9 to give zero, without bending moments being produced in the compression member 3. Possible materials for the plate 9 are, for example, aluminum, glass fiber reinforced plastics, carbon fiber reinforced plastics or multi-layered plywood.
  • FIG. 5 illustrates, as a second exemplary embodiment, a further configuration of the first exemplary embodiment. The plate 9, once again, has the large opening 10, albeit of particular design: in a first portion 18, the opening 10 is of a cylindrical configuration and contains a first O-ring groove 19 with a first O-ring 20. The latter provides sealing against the outside of the cylindrical part of the sleeve 2. The first cylindrical portion 19 is adjoined by a second portion 21, which essentially has the form of the spherical cap 5 located in the opening 10. Instead of the spherical cap 5, a cover 22 modeled, for example, on the spherical cap 5 is provided here. It is also possible—depending on expediency—for this cover to be formed in some other way; it is only its essentially conical or spherical profile within the second portion 21 which is essential to the invention.
  • Also within the cylindrical part of the first portion 18, the cover 22 is likewise cylindrical and, there, contains an O-ring groove 23 with a second O-ring 24, which provides sealing against the inside of the cylindrical part of the sleeve 2. The sleeve 2 is clamped in between the plate 9 and the cover 22, in the conical or spherical part 21 of the opening, by the cover 22, and the latter is forced against the plate 9 by the positive pressure prevailing in the sleeve 2. The sealing function is performed, as has been described, by the two O- rings 20, 24. The rest of the plate 9 may be configured in accordance with FIGS. 2, 3 and 4.
  • It is, of course, also possible for the cover 22, instead of being of spherical configuration, to have some other, for example planar, form, along with corresponding reinforcement of the wall.
  • A third exemplary embodiment of the joint element according to the invention is illustrated in FIG. 6. It is provided for a pneumatic structural element 1 with a plurality of—in this case eight—compression members 3 and, by way of example, two tension members 4 per compression member 3. The plate 9 here is designed as a round flange 27 with a large opening 10 for the spherical cap 5 of the pneumatic structural element 1. The flange 27 contains, in accordance with the number of compression members 3, holes 12 for the screws 15 for fastening the compression members 3. In accordance with the number of tension members 4 per compression member 3, the flange 27 contains holes 11 for fastening the tension members 4.
  • In the exemplary embodiment according to FIG. 6, the flange 27 does not contain any further holes. For fastening on further static structures and for the introduction of supporting forces, the flange 27, or a round plate 9 in general, can be clamped into a plate 28, as is illustrated in section in FIG. 7. The plate 28 here contains, for example, a circular opening 31 for accommodating the flange 27. A further, for example circular plate 29 contains an opening 32. Both plates 28, 29 are provided with a circular shoulder 33 which fits with the necessary amount of accuracy over the flange 27 and accommodates the latter. By means of screws 30, the two plates 28, 29 can be fastened in a force-fitting and form-fitting manner on one another. The external form of the plate 28 may be round, quadrilateral or polygonal, depending on the structural and design-related requirements. It may, furthermore, contain a multiplicity of holes 34 for fastening the pneumatic structural element 1 on further static structures and for introducing supporting and bearing forces.
  • Of course, it is also possible for the plate 9 according to FIGS. 2, 3, 4 and 5 to be of circular configuration and to be encased by means of the plates 28, 29 described in relation to FIG. 7.
  • The possible formations either of the plate 9 itself—as has already been illustrated in FIG. 2—or of the plate 28 according to FIG. 7 belong to the joint element according to the invention.
  • Quadrilateral, or if need be square, plates 9, 28 can be used for connecting elements according to FIGS. 8, 9, 10 and 11, as is shown hereinbelow. If one or, at most, four pneumatic structural elements 1 is or are to be positioned, for example, on a column 40, as is illustrated in FIG. 8, then use may be made, for example, of a cubic connecting element 41. The plates 9, 28 are screwed onto the suitably designed connecting element 41. The pneumatic structural elements are only illustrated schematically; this is not associated with any restriction in their design.
  • A variant of this is shown in FIG. 9. Here, use is made of a connecting element 42 of triangular cross section for connecting, at most, three pneumatic structural elements 1.
  • The exemplary embodiment of FIG. 10 is conceived for connecting, at most, six pneumatic structural elements 1. Accordingly, a connecting element 43 has a hexagonal horizontal projection with preferably square side surfaces. Designing the side surfaces as squares has the advantage that, if the pneumatic structural elements 1 are equipped with four, eight or twelve compression members 3, there is no need to ensure correct orientation. If, however, a certain orientation is to be maintained, then this can be made certain by the provision of a protuberance 44, as is illustrated in FIG. 9. To summarize the configuration of the connecting elements 41, 42 and 43, their horizontal projection may be defined as polygonal, the bottom and top surfaces of the connecting elements 41, 42 and 43 being of equal magnitude and the pneumatic structural elements 1 fastened thereon all being located in the same plane.
  • FIG. 11 shows a further exemplary embodiment of a planar arrangement of pneumatic structural elements 1. In this case, the, for example, square plates 9, 28 are screwed one beside the other to a carrying element (not illustrated). Such carrying elements, as structures which are known per se, do not form a constituent part of the invention. This arrangement can be used to produce, for example, a roof surface.
  • FIGS. 12, 13 and 14 are illustrations of non-planar arrangements. FIG. 12 shows a connecting element 45 which is, for example, of curved configuration. It is, furthermore, configured such that it can perform the function of the plate 28, that is to say the connecting element 45 here has five circular openings 31 and, for example, six holes for screws 30 per opening 31. By means of these screws, the further plate 29, which belongs to each pneumatic structural element 1, but is not illustrated in FIG. 12, is screwed to the connecting element 45.
  • In the exemplary embodiment according to FIG. 13, a plurality of pneumatic structural elements are connected to a connecting element 46 which is configured as a polyhedron—in this case an octahedron. The pneumatic structural elements are attached to the connecting element 46 in the same way as has been explained in relation to FIG. 12. As an alternative to this, it is also possible for each plate 9, 28 to be in the form of the corresponding side of the polyhedron, in which case the polyhedron is then configured essentially from bars which form its edges.
  • In FIG. 14, a plurality of, for example six, planar plates 47 are joined together by welding, or by screw connections (not illustrated), to form a pyramid-like connecting element 48 which is open at the top. Each plate 47 has, for example, the function of a plate 28 according to FIG. 7.
  • As a variant to this, it is likewise possible for the plates 9 according to FIG. 2 to be formed such that they correspond to the plates 47 according to FIG. 14. The connecting element 48 then comprises, for example, as has already been explained analogously in relation to FIG. 13, bars, which form the edges of the connecting element 48, to which the plates 47, for example, are screwed.
  • Although various embodiments of the device of the present invention have been illustrated in the accompanying Drawings and described in the foregoing Detailed Description, it will be understood that the invention is not limited to the embodiments disclosed, but is capable of numerous rearrangements, modifications and substitutions without departing from the spirit of the invention as set forth herein.

Claims (17)

1. A pneumatic structural element comprising:
an elongated gas-tight inflatable hollow body having a longitudinal axis, extending between opposing ends of the elongated gas-tight inflatable hollow body;
at least one compression member disposed on a longitudinal side of the elongated gas-tight inflatable hollow body and longitudinally extending an entire length of the elongated gas-tight inflatable hollow body substantially parallel to the longitudinal axis of the gas-tight inflatable hollow body, the at least one compression member being subjected to axial compression responsive to an operational load applied to the pneumatic structural element;
at least two flexible tension members wound around the elongated gas-tight inflatable hollow body and extending longitudinally between respective ends of the gas-tight inflatable hollow body, the at least two flexible tension members being subjected to axial tension and equal stresses responsive to the operational load;
a rigid flange disposed at least at one end of the gas-tight inflatable hollow body and connected to both the at least one compression member and the at least two flexible tension members, such that the at least one compression member is disposed between the at least two flexible tension members;
an opening disposed in the rigid flange for removably receiving an end of the gas-tight inflatable hollow body;
wherein compression forces are transmitted to the at least two flexible tension members and tension forces are transmitted to the at least one compression member via the rigid flange; and
wherein the at least two flexible tension members are connected to the rigid flange such that, responsive to the operational load, a supporting force acting on the rigid flange is substantially transmitted to the at least two flexible tension members and is substantially not transmitted to the gas-tight inflatable hollow body.
2. The pneumatic structural element according to claim 1, wherein
the at least one compression member is connected to the rigid flange by way of a screw, the screw being received through a first hole in the rigid flange and fastened to the at least one compression member; and
the at least two flexible tension members are received through at least two second holes in the rigid flange and fastened thereto with at least two nuts.
3. The pneumatic structural element according to claim 2, wherein the rigid plate-shaped element is a flange.
4. The pneumatic structural element according to claim 1, wherein:
at least one end cap is received by and enclosed by the gas-tight inflatable hollow body;
the at least one end cap can be introduced flush into the gas-tight inflatable hollow body; and
the at least one end cap and the gas-tight inflatable hollow body are sealed in a gas-tight manner.
5. The pneumatic structural element according to claim 4, wherein:
the at least one end cap comprises a cylindrical part disposed at least in part within the gas-tight inflatable hollow body and a non-cylindrical part disposed at least in part exterior of the gas-tight inflatable hollow body; and
at least one first O-ring is disposed in a first O-ring groove disposed in the cylindrical part and a second O-ring is disposed in a second O-ring groove disposed in the opening of the rigid flange.
6. The pneumatic structural element of claim 1, comprising:
a connecting element facilitates attachment of the rigid flange thereto; and
wherein the connecting element is arranged such that bearing forces can be introduced into the rigid flange.
7. The pneumatic structural element according to claim 6, wherein the connecting element comprises:
at least one first plate comprising at least one shoulder in which the at least one plate can be positioned; and
at least one second plate comprising at least one piece and having a shoulder; and
wherein the shoulder is screwed to the at least one first plate.
8. The pneumatic structural element according to claim 7, wherein the connecting element comprises a three-dimensional body made up, at least in part, of plates.
9. The pneumatic structural element according to claim 6, wherein the connecting element compises a frame structure on which the rigid flange is fastened.
10. The pneumatic structural element according to claim 9, wherein the connecting element is polygonal in at least one projection and at least one rigid flange is fastened on at least one side wall of the connecting element.
11. The pneumatic structural element according to claim 10, wherein the rigid flange can be fastened on a plurality of sides of the connecting element.
12. The pneumatic structural element according to claim 7, wherein the connecting element is rectangular and a plurality of joint elements can be fastened thereon, with the result that a pneumatic structural elements run parallel to one another.
13. The pneumatic structural element according to claim 7, wherein the connecting element is curved and a plurality of joint elements can be fastened thereon, with the result that a pneumatic structural elements run parallel to one another.
14. The pneumatic structural element according to claim 9, wherein the connecting element comprises a tetrahedron shape and the rigid flange is fastened to a side of the connecting element.
15. The pneumatic structural element according to claim 9, wherein the connecting element comprises a cube shaped external form and the rigid flange is fastened to a side of the connecting element.
16. The pneumatic structural element according to claim 9, wherein the connecting element comprises a truncated pyramid external form and the rigid flange is fastened to a side of the connecting element.
17. The pneumatic structural element according to claim 9, wherein the rigid flange is fastened to the connecting element by way of at least one screw.
US13/014,574 2002-06-19 2011-01-26 Pneumatic node for compression elements Abandoned US20110209416A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/014,574 US20110209416A1 (en) 2002-06-19 2011-01-26 Pneumatic node for compression elements

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH1042/02 2002-06-19
CH01042/02A CH705207B1 (en) 2002-06-19 2002-06-19 Pneumatic device with node elements.
US10/517,787 US7926225B2 (en) 2002-06-19 2003-03-31 Node element for pneumatic components
PCT/CH2003/000207 WO2004001162A1 (en) 2002-06-19 2003-03-31 Node element for pneumatic components
US13/014,574 US20110209416A1 (en) 2002-06-19 2011-01-26 Pneumatic node for compression elements

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
US10/517,787 Continuation US7926225B2 (en) 2002-06-19 2003-03-31 Node element for pneumatic components
PCT/CH2003/000207 Continuation WO2004001162A1 (en) 2002-06-19 2003-03-31 Node element for pneumatic components

Publications (1)

Publication Number Publication Date
US20110209416A1 true US20110209416A1 (en) 2011-09-01

Family

ID=29783959

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/517,787 Expired - Fee Related US7926225B2 (en) 2002-06-19 2003-03-31 Node element for pneumatic components
US13/014,574 Abandoned US20110209416A1 (en) 2002-06-19 2011-01-26 Pneumatic node for compression elements

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US10/517,787 Expired - Fee Related US7926225B2 (en) 2002-06-19 2003-03-31 Node element for pneumatic components

Country Status (5)

Country Link
US (2) US7926225B2 (en)
EP (1) EP1513997A1 (en)
AU (1) AU2003215481A1 (en)
CH (1) CH705207B1 (en)
WO (1) WO2004001162A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8640386B1 (en) * 2011-10-28 2014-02-04 Other Lab, Llc Stiffening of an air beam
ITUB20153899A1 (en) * 2015-09-25 2017-03-25 Univ Degli Studi Roma La Sapienza Tensairity structure with shape memory ropes.

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH705207B1 (en) * 2002-06-19 2012-11-30 Prospective Concepts Ag Pneumatic device with node elements.
WO2005042880A1 (en) * 2003-11-04 2005-05-12 Prospective Concepts Ag Pneumatic two-dimensional structure
US7824415B2 (en) * 2004-09-15 2010-11-02 Boston Scientific Scimed, Inc. Atraumatic medical device
US8984814B2 (en) * 2007-03-20 2015-03-24 Nemo Equipment, Inc. Single wall airbeam
US20110305505A1 (en) * 2007-03-20 2011-12-15 Nemo Equipment, Inc. Outdoor equipment
US8943754B2 (en) * 2007-03-20 2015-02-03 Nemo Equirment, Inc. Bending mechanism for air-beams
US8047473B2 (en) * 2008-09-29 2011-11-01 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Connecting node and method for constructing a connecting node
JP5033273B1 (en) * 2011-07-21 2012-09-26 達也 遠藤 Pressure membrane composite structure
JP6292829B2 (en) 2013-11-12 2018-03-14 曙ブレーキ工業株式会社 Friction material composition and friction material
US10179998B1 (en) * 2017-01-31 2019-01-15 Argonaut Inflatable Research And Engineering, Inc. Air-beam aircell communicating airflow port assembly and cooperating structural cover port aperture
WO2019083728A1 (en) * 2017-10-26 2019-05-02 William Donnelly Interlocking blocks
CN109930694A (en) * 2019-03-18 2019-06-25 北京工业大学 A kind of adjustable error space network sleeve node

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065890A (en) * 1975-12-17 1978-01-03 Wolfgang Fenner Framework joint
US4271654A (en) * 1977-02-07 1981-06-09 Otto Jungbluth Three-dimensional structures of frame beams and multiple joints
US5341567A (en) * 1992-06-05 1994-08-30 Grenci Charles A Method of making clean socket fit connection
US5546707A (en) * 1995-01-05 1996-08-20 Caruso; Vincent C. Polyethelene inflatable tube construction device
US6012742A (en) * 1995-05-24 2000-01-11 Deutsche Forschungsanstalt Fuer Luft -Und Raumfahrt E.V. Piping
US6543730B2 (en) * 2000-03-27 2003-04-08 Mauro Pedretti Pneumatic structural element
US7926225B2 (en) * 2002-06-19 2011-04-19 Prospective Concepts Ag Node element for pneumatic components

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1302293A (en) * 1916-11-04 1919-04-29 Earl H Blazer Aeroplane-frame construction.
DE1659121C3 (en) * 1968-03-12 1974-03-07 Willy 8000 Muenchen Herold Space lattice work with rod-like connecting links, which consist of hoses stretched by internal pressure
FR2341017A1 (en) * 1976-02-11 1977-09-09 Potocki Adam Inflatable framework for tent - is made from separate inflatable tubes rigidly joined together and covered with cloth sheets
JPS56500894A (en) * 1979-07-02 1981-07-02
AU6589300A (en) 1999-09-16 2001-04-17 Michael Paul Muller Variable flange
EP1903559A1 (en) 2006-09-20 2008-03-26 Deutsche Thomson-Brandt Gmbh Method and device for transcoding audio signals

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065890A (en) * 1975-12-17 1978-01-03 Wolfgang Fenner Framework joint
US4271654A (en) * 1977-02-07 1981-06-09 Otto Jungbluth Three-dimensional structures of frame beams and multiple joints
US5341567A (en) * 1992-06-05 1994-08-30 Grenci Charles A Method of making clean socket fit connection
US5546707A (en) * 1995-01-05 1996-08-20 Caruso; Vincent C. Polyethelene inflatable tube construction device
US6012742A (en) * 1995-05-24 2000-01-11 Deutsche Forschungsanstalt Fuer Luft -Und Raumfahrt E.V. Piping
US6543730B2 (en) * 2000-03-27 2003-04-08 Mauro Pedretti Pneumatic structural element
US7926225B2 (en) * 2002-06-19 2011-04-19 Prospective Concepts Ag Node element for pneumatic components

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8640386B1 (en) * 2011-10-28 2014-02-04 Other Lab, Llc Stiffening of an air beam
ITUB20153899A1 (en) * 2015-09-25 2017-03-25 Univ Degli Studi Roma La Sapienza Tensairity structure with shape memory ropes.
WO2017051440A1 (en) * 2015-09-25 2017-03-30 Universita' Degli Studi Di Roma "La Sapienza" Tensairity structure with shape-memory wire ropes
CN108350702A (en) * 2015-09-25 2018-07-31 罗马大学 Air-inflated beam-string structure with shape memory wire rope
US10407939B2 (en) 2015-09-25 2019-09-10 Universita' Degli Studi Di Roma “La Sapienza” Tensairity structure with shape-memory wire ropes

Also Published As

Publication number Publication date
US7926225B2 (en) 2011-04-19
CH705207B1 (en) 2012-11-30
AU2003215481A1 (en) 2004-01-06
WO2004001162A1 (en) 2003-12-31
US20060033335A1 (en) 2006-02-16
EP1513997A1 (en) 2005-03-16

Similar Documents

Publication Publication Date Title
US20110209416A1 (en) Pneumatic node for compression elements
AU777055B2 (en) Pneumatic structural element
US8397463B2 (en) 3-dimensional universal tube connector system
EP0038523B1 (en) Redundant deployable lattice column
CA1171756A (en) Collapsible building structure
Pi et al. In-plane inelastic buckling and strengths of steel arches
Kwan et al. Active and passive cable elements in deployable/retractable masts
EP1597447A2 (en) Inflatable rigidizable boom
US4612750A (en) Pre-stressed truss-like beam with elements in buckled state
CN109811888B (en) Connecting node of raw bamboo cross beam and upright post
US20090282746A1 (en) Pneumatic Structural Element
Kueh et al. ABD matrix of single-ply triaxial weave fabric composites
US20030089390A1 (en) Steel pole for a rectangular dome-shaped tent
CA2634501C (en) Pneumatic structural element and roof produced therefrom
US4741609A (en) Stretched membrane heliostat with integral bladder
US20060260209A1 (en) Flexible compression member for a flexible pneumatic structural element and means for erecting pneumatic element structures
US9828772B2 (en) Truss designs, materials, and fabrication
CA2454241C (en) Pneumatic construction or bridging element
JP4552129B2 (en) Tense grid structure
CN215053927U (en) But assembled FRP post rod spare node fast
CN106892135B (en) The truss module and truss structure of air column and the rigid flexible system based on air column
Wang et al. Integral-tension research in double-layer tensegrity grids
CN208106020U (en) A kind of modularization assembling buckling-restrained bracing member
US20050077428A1 (en) Push rod for a pneumatic element
JPH09165866A (en) Grid glass dome and glass plate fitting structure in grid glass dome

Legal Events

Date Code Title Description
AS Assignment

Owner name: PROSPECTIVE CONCEPTS AG, SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PEDRETTI, MAURO;REEL/FRAME:026087/0242

Effective date: 20041212

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION