FOLDING FRAME SYSTEM WITH CANTILEVER ARRANGEMENT
A cantilever arrangement for a folding structure is provided. The folding structure is of the type including a plurality of strut members foldable between an open position in which the strut members define a non-zero angle with each other and a closed position in which the strut members define a substantially 0° angle with each other. The cantilever strut arrangement includes a first cantilever strut pivotably adapted to be attached at a first point on the folding structure and a first support member adapted to be attached at a second point on the folding structure and attached at a point on the first cantilever strut. When the folding structure is folded to the closed position, the first cantilever strut member defines a substantially 0° angle with the strut members.
The present invention relates to folding frame systems and, more particularly, to folding frame systems including cantilever arrangements useful for, e.g., doorway arrangements and frame system connection arrangements.
My U.S. Pat. No. 5,444,946, which is incorporated by reference, discloses forming shelters from a plurality of expandable and collapsible frame modules, each frame module comprising a plurality of scissor-strut arrangements connected end-to-end by hub assemblies. The frame modules are particularly well-suited for use in forming shelters in the form of arches.
While shelters such as those in U.S. Pat. No. 5,444,946 are collapsible to facilitate transporting the shelters by means such as trucks to desired locations, there is a practical limit to how large of a shelter can be transported in a single crate, although that limit will, of course, vary depending upon the construction of the shelter. However, in the field, it will often be desirable to connect a plurality of shelters to form one large shelter with a plurality of connected sections, such as for use for large vehicle repairs and maintenance, or for use as a mobile hospital or a command center. It is desirable to provide an arrangement to facilitate the connection of two or more discrete frame systems to form a single, larger frame system.
Particularly with structures in the form of arches, access to the interior of the structures is generally available at only one end of the structure. However, it is often desirable to have access to the structure at various points along the length of the structure, as opposed to merely having access at the ends of the structure. It is desirable to provide an arrangement to facilitate access to a structure comprising a frame system.
In accordance with an aspect of the present invention, a modular frame system comprises a frame system comprising a first and a second plurality of scissor assemblies, each scissor assembly of the first and the second plurality of scissor assemblies comprising at least a pair of pivotably connected struts, the scissor assemblies of each of the first and the second plurality of scissor assemblies being pivotably connected end to end by hub assemblies at ends of the struts, the hub assemblies having first and second ends, the scissor assemblies of the first and the second plurality of scissor assemblies being movable from a closed position in which the struts of the at least one strut pair of each scissor assembly are substantially parallel and ends of the struts are substantially adjacent, and an open position in which all of the struts of the at least one strut pair of each scissor assembly define non-zero angles with each other and the ends of the struts are separated by a predetermined distance, and a scissor assembly connection arrangement, comprising, for at least one scissor assembly of the first and second plurality of scissor assemblies, a first connecting strut pivotably attached at a first end thereof to a first end of a hub assembly, and a second connecting strut pivotably attached at a first end thereof to a second end of the hub assembly, the second connecting strut being pivotably attached to the first connecting strut, each first connecting strut for the first scissor assembly being removably attached to a corresponding first connecting strut of the second scissor assembly.
In accordance with another aspect of the present invention, a modular frame system comprises a frame system comprising a plurality of scissor assemblies, each scissor assembly of the plurality of scissor assemblies comprising at least a pair of pivotably connected struts, the scissor assemblies of the plurality of scissor assemblies being pivotably connected end to end by hub assemblies at ends of the struts, the hub assemblies having first and second ends, the scissor assemblies being movable from a closed position in which the struts of the at least one strut pair of each scissor assembly are substantially parallel and ends of the struts are substantially adjacent, and an open position in which all of the struts of the at least one strut pair of each scissor assembly define non-zero angles with each other and the ends of the struts are separated by a predetermined distance, and a cantilever arrangement attached to at least one of the pairs of pivotably connected struts, the cantilever assembly comprising a cantilever strut pivotably attached at a first end thereof to an end of a hub assembly, and a second member pivotably attached to an opposite end of the hub assembly and to the cantilever strut.
In accordance with yet another aspect of the present invention, a cantilever arrangement for a folding structure is provided. The folding structure is of the type comprising a plurality of strut members foldable between an open position in which the strut members define a non-zero angle with each other and a closed position in which the strut members define a substantially 0° angle with each other. The cantilever strut arrangement comprises a first cantilever strut pivotably adapted to be attached at a first point on the folding structure and a first support member adapted to be attached at a second point on the folding structure and attached at a point on the first cantilever strut. When the folding structure is folded to the closed position, the first cantilever strut member defines a substantially 0° angle with the strut members.
The features and advantages of the present invention are well understood by reading the following detailed description in conjunction with the drawings in which like numerals indicate similar elements and in which:
Modular frame system 21 according to an embodiment of the present invention is seen in
As seen in
Components of a scissor assembly connection arrangement 47 are seen in
As seen in
The second connecting strut 53 and the first connecting strut 49 can be pivotably attached to each other such that, when the first connecting strut of a first scissor assembly 25 is disconnected from a first connecting strut of a second scissor assembly 27, the struts of the at least one strut pair 29 and 31, and 33 and 35, and the second connecting strut 53 and the first connecting strut 49 are adapted to be pivoted between the closed position in which the struts of the at least one strut pair of each scissor assembly and the second connecting strut and the first connecting strut are substantially parallel, and an open position in which all of the struts of the at least one strut pair of each scissor assembly and the second connecting strut and the first connecting strut define non-zero angles with each other.
The hub assemblies 37 in the illustrated embodiments are of the type that each include first and second elongated members 37a and 37b that are lockable relative to each other to retain the ends of the struts separated by the predetermined distance. A manual lock 63 (
The second connecting strut 53 in the embodiments shown in FIGS. 1B and 4A-4B is ordinarily in compression when the first and second scissor assemblies 25 and 27 are in the open position. Such an arrangement in the illustrated embodiments facilitates forming a supporting frame for an outer cover with the various scissors of the first and second plurality of scissor assemblies and the first connecting struts 49 that is substantially continuous, for example, in the sense that it has no significant depression at the location of the first connecting struts. Of course, the arrangement shown in
As seen in
As seen in FIGS. 3A and 5A-5B, a cantilever arrangement 75 can be provided and is particularly useful as a means for providing an access point in a frame system or shelter that would ordinarily only have an access point at an end of the structure, such as an elongated arch structure of the type shown in
Much like the scissor assembly connection arrangement 47, the cantilever arrangement 75 is ordinarily foldable such that the cantilever strut 77 and the second member 81 are adapted to be pivoted between the closed position in which at least the struts 29 and 31 and 33 and 35 of the strut pairs of each scissor assembly 25 and 27 and the cantilever strut are substantially parallel, and an open position in which all of the struts of the at least one strut pair of each scissor assembly define non-zero angles with each other and the ends of the struts are separated by a predetermined distance. However, as seen in, e.g.,
As seen in
In the embodiment shown in
As seen in
In the present application, the use of terms such as “including” is open-ended and is intended to have the same meaning as terms such as “comprising” and not preclude the presence of other structure, material, or acts. Similarly, though the use of terms such as “can” or “may” is intended to be open-ended and to reflect that structure, material, or acts are not necessary, the failure to use such terms is not intended to reflect that structure, material, or acts are essential. To the extent that structure, material, or acts are presently considered to be essential, they are identified as such.
While this invention has been illustrated and described in accordance with a preferred embodiment, it is recognized that variations and changes may be made therein without departing from the invention as set forth in the claims.
Claims
1. A modular frame system, comprising:
- a frame system comprising a first and a second plurality of scissor assemblies, each scissor assembly of the first and the second plurality of scissor assemblies comprising at least a pair of pivotably connected struts, the scissor assemblies of each of the first and the second plurality of scissor assemblies being pivotably connected end to end by hub assemblies at ends of the struts, the hub assemblies having first and second ends, the scissor assemblies of the first and the second plurality of scissor assemblies being movable from a closed position in which the struts of the at least one strut pair of each scissor assembly are substantially parallel and ends of the struts are substantially adjacent, and an open position in which all of the struts of the at least one strut pair of each scissor assembly define non-zero angles with each other and the ends of the struts are separated by a predetermined distance; and
- a scissor assembly connection arrangement, comprising, for at least one scissor assembly of the first and second plurality of scissor assemblies, a first connecting strut pivotably attached at a first end thereof to a first end of a hub assembly, and a second connecting strut pivotably attached at a first end thereof to a second end of the hub assembly, the second connecting strut being pivotably attached to the first connecting strut, each first connecting strut for the first scissor assembly being removably attached to a corresponding first connecting strut of the second scissor assembly.
2. The modular frame system as set forth in claim 1, wherein the second connecting strut and the first connecting strut are pivotably attached to each other such that, when the first connecting strut of a first scissor assembly is disconnected from a first connecting strut of a second scissor assembly, the struts of the at least one strut pair and the second connecting strut and the first connecting strut are adapted to be pivoted between the closed position in which the struts of the at least one strut pair of each scissor assembly and the second connecting strut and the first connecting strut are substantially parallel, and an open position in which all of the struts of the at least one strut pair of each scissor assembly and the second connecting strut and the first connecting strut define non-zero angles with each other.
3. The modular frame system as set forth in claim 1, wherein the second end of the second connecting strut is pivotably attached to the first connecting strut.
4. The modular frame system as set forth in claim 1, wherein the hub assemblies each include first and second members that are lockable relative to each other to retain the ends of the struts separated by the predetermined distance.
5. The modular frame system as set forth in claim 1, wherein the second connecting strut is in compression when the first and second scissor assemblies are in the open position.
6. The modular frame system as set forth in claim 1, comprising a manual lock associated with second ends of each first connecting strut for locking the second ends of each first connecting strut to the corresponding second end of a corresponding first connecting strut.
7. The modular frame system as set forth in claim 1, comprising a cantilever arrangement comprising a cantilever strut pivotably attached at a first end thereof to an end of a hub assembly, and a second member pivotably attached to an opposite end of the hub assembly and to the cantilever strut.
8. The modular frame system as set forth in claim 7, wherein the cantilever arrangement is foldable such that the cantilever strut and the second member are adapted to be pivoted between the closed position in which at least the struts of the at least one strut pair of each scissor assembly and the cantilever strut are substantially parallel, and an open position in which all of the struts of the at least one strut pair of each scissor assembly define non-zero angles with each other and the ends of the struts are separated by a predetermined distance.
9. The modular frame system as set forth in claim 8, wherein, in the open position, the cantilever strut defines a second non-zero angle with struts of the at least one strut pair of each scissor assembly that is different than the non-zero angle defined by the struts of the at least one strut pair with each other.
10. The modular frame system as set forth in claim 8, wherein the second connecting strut and the first connecting strut are pivotably attached to each other such that, when the first connecting strut of a first scissor assembly is disconnected from a first connecting strut of a second scissor assembly, the struts of the at least one strut pair and the second connecting strut and the first connecting strut are adapted to be pivoted between the closed position in which the struts of the at least one strut pair of each scissor assembly and the second connecting strut and the first connecting strut are substantially parallel, and an open position in which all of the struts of the at least one strut pair of each scissor assembly and the second connecting strut and the first connecting strut define non-zero angles with each other.
11. The modular frame system as set forth in claim 7, comprising a cover for covering an exterior of the modular frame system, a portion of the cover being suspended by a first and a second cantilever arrangement and including a doorway, the first cantilever arrangement being pivotably attached to the first plurality of scissor assemblies and the second cantilever arrangement being pivotably attached to the second plurality of scissor assemblies.
12. The modular frame system as set forth in claim 7, comprising a cover for covering an exterior of the modular frame system, a portion of the cover being suspended by a first and a second cantilever arrangement and including a doorway, the first and the second cantilever arrangement being pivotably attached to two respective scissor assemblies.
13. A modular frame system, comprising:
- a frame system comprising a plurality of scissor assemblies, each scissor assembly of the plurality of scissor assemblies comprising at least a pair of pivotably connected struts, the scissor assemblies of the plurality of scissor assemblies being pivotably connected end to end by hub assemblies at ends of the struts, the hub assemblies having first and second ends, the scissor assemblies being movable from a closed position in which the struts of the at least one strut pair of each scissor assembly are substantially parallel and ends of the struts are substantially adjacent, and an open position in which all of the struts of the at least one strut pair of each scissor assembly define non-zero angles with each other and the ends of the struts are separated by a predetermined distance; and
- a cantilever arrangement attached to at least one of the pairs of pivotably connected struts, the cantilever assembly comprising a cantilever strut pivotably attached at a first end thereof to an end of a hub assembly, and a second member pivotably attached to an opposite end of the hub assembly and to the cantilever strut.
14. The modular frame system as set forth in claim 13, wherein the cantilever arrangement is foldable such that the cantilever strut and the second member are adapted to be pivoted between the closed position in which at least the struts of the at least one strut pair of each scissor assembly and the cantilever strut are substantially parallel, and an open position in which all of the struts of the at least one strut pair of each scissor assembly define non-zero angles with each other and the ends of the struts are separated by a predetermined distance.
15. The modular frame system as set forth in claim 13, wherein the second member is a flexible member.
16. The modular frame system as set forth in claim 13, wherein, when the frame system is in an open position, the second member is in tension.
17. The modular frame system as set forth in claim 13, wherein the frame system comprises first and second scissor assemblies arranged parallel to each other when the frame system is in an open position, first and second cantilever arrangements being attached to at least one of the pairs of pivotably connected struts of each of the first and second scissor assemblies, respectively.
18. The modular frame system as set forth in claim 17, comprising a cover for covering an exterior of the modular frame system, a portion of the cover being suspended by the first and the second cantilever arrangement and including a doorway.
19. The modular frame system as set forth in claim 13, wherein, in the open position, the cantilever strut defines a second non-zero angle with struts of the at least one strut pair that is different than the non-zero angle defined by the struts of the at least one strut pair with each other.
20. A cantilever arrangement for a folding structure, the folding structure comprising a plurality of strut members foldable between an open position in which the strut members define a non-zero angle with each other and a closed position in which the strut members define a substantially 0° angle with each other, the cantilever strut arrangement comprising:
- a first cantilever strut pivotably adapted to be attached at a first point on the folding structure; and
- a first support member adapted to be attached at a second point on the folding structure and attached at a point on the first cantilever strut,
- wherein, when the folding structure is folded to the closed position, the first cantilever strut member defines a substantially 0° angle with the strut members.
21. The cantilever arrangement as set forth in claim 20, wherein the first support member is a second cantilever strut.
22. The cantilever arrangement as set forth in claim 21, wherein the first support member is in compression when the folding structure is in the open position.
23. The cantilever arrangement as set forth in claim 20, wherein the first support member is in compression when the folding structure is in the open position.
23. The cantilever arrangement as set forth in claim 20, wherein the first support member is a cable.
24. The cantilever arrangement as set forth in claim 20, wherein the first support member is a tension member.
25. The cantilever arrangement as set forth in claim 20, wherein the first cantilever strut and the first support member define a first cantilever, the cantilever arrangement comprising a second cantilever comprising a second cantilever strut and a second support member, and a cover adapted to be suspended by the first and the second cantilevers and including a doorway.
Type: Application
Filed: Jul 19, 2006
Publication Date: Jan 24, 2008
Inventor: Theodore R. Zeigler (Alexandria, VA)
Application Number: 11/458,449
International Classification: E04H 15/50 (20060101); E04H 15/38 (20060101);