The present invention provides a door system for a temporary, movable structure having a plurality of spaced apart frame members and a membrane stretched between adjacent frame members. The door system has multiple modules movable between open and closed positions. Each module has its own membrane,
The present invention provides a door system for a temporary, movable structure having a plurality of spaced apart frame members and a membrane stretched between adjacent frame members. The door system has multiple modules movable between open and closed positions. Each module has its own membrane, separate from the membranes of the structure, which is stretched taught over the surface of the module. In the open position, the modules do not obstruct the opening in the structure, and the membranes of the modules and the structure do not go slack. The membranes of both the structure and the modules are always under tension, thus being less susceptible to damage.
대표청구항▼
1. A door system for a movable structure, the movable structure comprising a plurality of spaced apart frame members and at least one tensioned structure membrane extending between at least two of the spaced apart frame members and forming an interior space under the spaced apart frame members, the
1. A door system for a movable structure, the movable structure comprising a plurality of spaced apart frame members and at least one tensioned structure membrane extending between at least two of the spaced apart frame members and forming an interior space under the spaced apart frame members, the interior space having at least one open end, the door system comprising: first and second axles arranged coaxially and attached to the structure at first and second sides of the open end of the interior space;a first door module comprising: a first frame extending from a first end of the first frame hingedly attached to the first axle, to a second end of the first frame hingedly attached to the second axle; anda first tensioned door membrane, separate from the tensioned structure membranes, supported by the first frame, wherein the first tensioned door membrane is stretched taut between the frame of the first door module; anda second door module comprising: a second frame extending from a first end of the second frame hingedly attached to the first axle adjacent to the first end of the first frame, to a second end of the second frame hingedly attached to the second axle adjacent to the second end of the first frame; anda second tensioned door membrane, separate from the tensioned structure membranes, supported by the second frame, wherein the second tensioned door membrane is stretched taut between the frame of the second door module;the first and second door modules being rotatable about the first and second axles between a closed position in which the first door module extends across an upper portion of the open end and the second door module extends across a lower portion of the open end, and an open position in which the open end of the interior space is substantially unobstructed by the first and second door modules, and in which the second door module is nested under the first door module in the open position and the second door module is not nested under the first door module in the closed position. 2. The system of claim 1, further comprising a system for rotating the first and second door modules about the first and second axes. 3. The system of claim 2, wherein the system for rotating comprises at least one cable attached at one end to the second door module, and at the other end to a winch for selectively extending or retracting the cable and raising or lowering the second door module. 4. The system of claim 1, further comprising a cable extending from a first cable end attached to the first door module to a second cable end attached to one of the plurality of spaced apart frame members, the cable being adapted to hold the first door module in its closed position extending across the upper portion of the open end of the interior space. 5. The system of claim 4, wherein the first and second door modules are adapted to make contact with each other when the second door module is being rotated from the closed position to the open position, to move the first door module from the closed position to the open position. 6. The system of claim 5, wherein a plurality of arms extend from the first door module, the plurality of arms being adapted to make contact with the second door module when the second door module is being rotated from the closed position to the open position, to move the first door module from the closed position to the open position. 7. The system of claim 1, wherein the first and second door modules are rotatable about the first and second axles to a partially open position wherein the second door module extends across the upper portion of the open end, and the lower portion of the open end is substantially unobstructed by the second door module. 8. The system of claim 1, wherein the first and second frames each comprise a plurality of arch members extending from the first end of the frame to the second end of the frame, the plurality of arch members being spaced apart between the first and second ends, wherein at least one of the plurality of arch members is parallel to the movable structure, the first and second frames each further comprising a plurality of spreader members disposed within the interior space of the movable structure and extending between the plurality of arch members to define at least one triangular region formed by the plurality of arch members, the plurality of frame members and the at least one tensioned structure membrane, wherein the at least one triangular region is fixedly attached to the movable structure. 9. The system of claim 8, wherein the first and second frames further comprise a plurality of cross spreader members extending substantially diagonally between connections points between the arch members and the spreader members. 10. The system of claim 1, further comprising a locking mechanism for holding the first and second door modules in the closed position. 11. The system of claim 10, wherein the locking mechanism comprises an articulated arm pivotally mounted to the second door module, the articulated arm being adapted to make contact with an attachment point in a surface on which the movable structure is erected, for holding the second door module in the closed position. 12. The system of claim 11, further comprising a pair of catches, one of said pair of catches provided on each of the first door module and second door module, the catches adapted to interlock with one another and hold the first door module in the closed position when the second door module is in the closed position. 13. A kit of parts for a door system for a movable structure, the movable structure comprising a plurality of spaced apart frame members and at least one tensioned structure membrane extending between at least two of the spaced apart frame members and forming an interior space under the spaced apart frame members, comprising: first and second door membranes;a first frame for supporting a first tensioned door membrane, the first frame extending from a first end of the first frame to a second end of the first frame;a second frame for supporting a second tensioned door membrane, the second frame extending from a first end of the second frame to a second end of the second frame, wherein a distance from the first end of the second frame to the second end of the second frame is less than a distance from the first end of the first frame to the second end of the first frame;wherein the first and second door membranes are separate from the first and second tensioned structure membranes, respectively, and the first and second tensioned door membranes are to be tensioned and supported by the first and second frames and stretched taut between the first and second frames, respectively;wherein the first and second frames each comprise a plurality of arch members extending from the first end of the frame to the second end of the frame, the plurality of arch members being spaced apart between the first and second ends, at least one of the plurality of arch members is parallel to the movable structure, the first and second frames each further comprising a plurality of crossbar members disposed within an interior space of the movable structure and extending between the plurality of arch members to define at least one triangular region formed by the plurality of arch members, the plurality of frame members and at least one tensioned structure membrane, wherein the at least one triangular region is fixedly attached to the movable structure; andfirst and second axles for hingedly supporting the first and second ends, respectively of the first and second frames in an open position and a closed position, and wherein the second frame is nested under the first frame in the open position and the second frame is not nested under the first frame in the closed position. 14. The kit of claim 13, further including at least one lifting cable and winch, the lifting cable for attachment at one end to the second frame and an opposite end to the winch, the winch for selectively extending or retracting the lifting cable to raise or lower the second frame. 15. The kit of claim 14, further comprising at least one cable for attachment at one end to the first frame and at an opposite end of the cable to the movable structure. 16. The kit of claim 15, wherein the first frame further comprises an arm adapted to make contact with the second frame while the second frame is in motion, to move the first frame. 17. The kit of claim 13, wherein the first and second frames each further comprise a plurality of cross spreader members extending substantially diagonally between connection points between the arch members and the spreader members. 18. The kit of claim 13, wherein the second frame comprises an articulated arm pivotally mounted thereon, the articulated arm being adapted to make contact with an attachment point, for holding the second frame adjacent to the attachment point. 19. The kit of claim 13, wherein the first and second frames each comprise one of a pair of catches adapted to interlock with one another and hold the first and second frames adjacent to one another.
Sprung ; Sr. Philip D. (12219 Lake Louise Way SE. Calgary ; Alberta CAX T2J 2N2), Hydraulically-operated scissor opening for stressed membrane structure.
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