IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0140293
(2008-06-17)
|
등록번호 |
US-8181412
(2012-05-22)
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발명자
/ 주소 |
- Miklosz, Mark
- Jacobs, Daniel
- Wascow, Joseph
- Oshgan, Stephen
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
10 |
초록
▼
A preassembled suspended ceiling grid module comprising a plurality of parallel main tees and a plurality of cross tees, the main and cross tees each having horizontal flanges extended to both sides of a central plane, the cross tees being joined at their ends to the main tees with end connections t
A preassembled suspended ceiling grid module comprising a plurality of parallel main tees and a plurality of cross tees, the main and cross tees each having horizontal flanges extended to both sides of a central plane, the cross tees being joined at their ends to the main tees with end connections that enable the module to be folded in a plane corresponding to an eventual ceiling plane in a zigzag pattern, such that the cross tees lie in directions generally parallel to the main tees with the cross tees connected on a side of a particular main tee being folded in a common direction relative to their end connection, and where connected to an adjacent main tee being folded in an opposite direction relative to their end connections with said adjacent tee.
대표청구항
▼
1. A preassembled suspended ceiling grid module comprising a plurality of parallel main tees and a plurality of cross tees, the main tees having a nominal length that exceeds twice the nominal length of the cross tees, the main and cross tees each having horizontal flanges extended to both sides of
1. A preassembled suspended ceiling grid module comprising a plurality of parallel main tees and a plurality of cross tees, the main tees having a nominal length that exceeds twice the nominal length of the cross tees, the main and cross tees each having horizontal flanges extended to both sides of a central plane, the cross tees being joined at each of their ends to the main tees with end connections that enable the module to be folded in a plane corresponding to an eventual ceiling plane in a zigzag pattern, such that the cross tees lie in directions generally parallel to the main tees with a plurality of the cross tees connected on a side of a particular main tee being folded in a common direction relative to their end connections, and where connected to an adjacent main tee said plurality of cross tees being folded in an opposite direction relative to their end connections with said adjacent tee. 2. A preassembled suspended ceiling grid as set forth in claim 1, wherein said end connections each provide a hinge center spaced from the central plane of the respective main tee. 3. A preassembled suspended ceiling grid as set forth in claim 2, wherein each hinge center is spaced from the central plane of the respective main tee a distance at least equal to half of the width of the flange of a cross tee. 4. A preassembled suspended ceiling grid as set forth in claim 1, wherein said connection includes a spring action to bias the associated cross tee to a deployed position in which it is at right angles to the associated main tee. 5. A preassembled suspended ceiling grid as set forth in claim 4, wherein said connection includes a spring action to bias the associated cross tee to a folded position in which it is parallel to the associated main tee. 6. A preassembled suspended ceiling grid as set forth in claim 1, wherein said connection includes a vertical hinge pin. 7. A preassembled suspended ceiling grid as set forth in claim 1, wherein the cross tees connected on an outside of an outer one of said main tees have their distal ends free of attachment of a main tee. 8. A preassembled suspended ceiling grid as set forth in claim 1, wherein said connection includes mating brackets on the main tee and on the cross tee. 9. A preassembled suspended ceiling grid module comprising a plurality of parallel main tees and a plurality of cross tees, the main tees having a nominal length that exceeds twice the nominal length of the cross tees, the main and cross tees each having horizontal flanges extended to both sides of a central plane, the cross tees being joined at each of their ends to the main tees with end connections that enable the module to be folded in a plane corresponding to an eventual ceiling plane in a zigzag pattern, such that the cross tees lie in directions generally parallel to the main tees with a plurality of the cross tees connected on a side of a particular main tee being folded in a common direction relative to their end connections, and where connected to an adjacent main tee said plurality of cross tees being folded in an opposite direction relative to their end connections with said adjacent tee, each of said connections allows the flange of its associated cross tee to overlie the flange of the main tee to which it is connected and to overlie the adjacent main tee flange to which the opposite end of the associated cross tee is connected. 10. A preassembled grid for a suspended ceiling comprising a plurality of main tees and sets of cross tees, the main tees having a nominal length that exceeds twice the nominal length of the cross tees, the main and cross tees each including a central vertical web and a lower horizontal flange extending on both sides of the web, a plurality of the cross tees being connected to the main tees at spaced intervals along each of the main tees in a manner that enables the cross tees to be folded towards the main tees and the main tees to be spaced in parallel relation with a separation between adjacent main tees substantially less than the length of the cross tees wherein the connection between a cross tee and a main tee allows relative vertical movement there between when the cross tee is moved between a folded condition to a right angle condition. 11. A preassembled grid as set forth in claim 10, wherein the connection between cross tees and a respective main tee produces a fold center displaced laterally of a central web of such respective main tee. 12. A preassembled grid as set forth in claim 11, wherein the fold center is displaced from the central web a distance greater than one-half the width of the flange of the cross tee. 13. A preassembled grid as set forth in claim 11, wherein the fold center has a fixed vertical axis. 14. A preassembled grid as set forth in claim 13, wherein the fold center is formed by a vertical pin. 15. A preassembled grid as set forth in claim 10, wherein the cross tee is resiliently biased downwardly relative to the respective main tee by a spring element. 16. A preassembled grid as set forth in claim 10, wherein the connection between the cross tee and the main tee has elements that bias the cross tee to one orientation where it lies at a right angle relative to the main tee. 17. A preassembled grid as set forth in claim 10, wherein the connection between a cross tee and a main tee includes an element that biases the cross tee to an orientation where it lies in close proximity to the main tee when it is folded. 18. A preassembled grid as set forth in claim 17, wherein said biasing element biases the cross tee to a position parallel to the main tee. 19. A preassembled grid for a suspended ceiling comprising a plurality of relatively long parallel main tees and a plurality of relatively short cross tees intervening adjacent main tees, said main and cross tees having horizontal flanges extending laterally from a lower edge of a central web, said cross tees having their opposite ends connected to adjacent main tees by a series of brackets attached to said main tees at regularly spaced locations, the spacing between brackets on a given main tee being greater than the length of the cross tees, said brackets each providing support for a vertical hinge axis for hinging a respective end of an associated cross tee, said brackets supporting said cross tees for hinging motion about said vertical axes in a folded condition where said adjacent main tees are spaced relatively close to one another and said cross tees are generally longitudinally aligned with said main tees and in an expanded operational condition perpendicular to said main tees for supporting ceiling tiles on their flanges. 20. A preassembled grid as set forth in claim 19, wherein said brackets provide a detent action to hold associated cross tees in their respective operational conditions. 21. A preassembled grid as set forth in claim 19, wherein said brackets provide a cam surface for lifting said cross tees above a plane of their operational condition to hold the flanges of the cross tees nested in spaces between the flanges of the main tees between which they intervene. 22. A preassembled grid as set forth in claim 21, wherein the hinged ends of said cross tees are biased downwardly by a resilient spring. 23. A preassembled grid as set forth in claim 21, wherein said brackets provide a detent action to releasably hold associated cross tees in the respective folded condition.
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