IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0655984
(2003-09-05)
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발명자
/ 주소 |
- Tlemcani,Jalil
- Carroll,Michael J.
- Johnson,Patrick K.
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출원인 / 주소 |
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대리인 / 주소 |
Patterson, Thuente, Skaar &
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인용정보 |
피인용 횟수 :
17 인용 특허 :
22 |
초록
▼
A fire-resistant, aluminum, cementitious-material-free, insulation-free door adapted to prevent the spread of fire and heat passing therethrough, consists of: a door frame, a door hingedly mounted on the door frame, the door having a bottom wall, a top wall, and side walls, the bottom wall, top wall
A fire-resistant, aluminum, cementitious-material-free, insulation-free door adapted to prevent the spread of fire and heat passing therethrough, consists of: a door frame, a door hingedly mounted on the door frame, the door having a bottom wall, a top wall, and side walls, the bottom wall, top wall and side walls enclosing a hollow central core not containing substantial amounts of insulating material, the bottom wall having an outside surface, and the top wall having an outside surface; and a layer of intumescent material on the outside surface of the bottom wall. A heat-activated self-closing mechanism allows the weight of the door to close the door in the vent of fire, by releasing gas from a supporting gas spring.
대표청구항
▼
The invention claimed is: 1. A fire resistant door designed to prevent the spread of fire comprising: a frame; a door hingedly connected to the frame; a collapsible supporting member adapted to hold the door spaced from the frame in an open position; and a heat activated self closing mechanism comp
The invention claimed is: 1. A fire resistant door designed to prevent the spread of fire comprising: a frame; a door hingedly connected to the frame; a collapsible supporting member adapted to hold the door spaced from the frame in an open position; and a heat activated self closing mechanism comprising a trigger mechanism including a firing pin, a fusible link plug, and a slave pin spaced from the firing pin by the fusible link plug, wherein the fusible link plug melts when exposed to sufficient heat which enables the firing pin to actuate the slave pin, and wherein the trigger mechanism interacts with the collapsible supporting member to collapse the collapsible supporting member when sufficient heat is applied to the door. 2. The fire resistant door of claim 1 wherein the trigger mechanism further comprises a compression spring biased against the firing pin, which actuates the firing pin when the fusible link plug melts. 3. The fire resistant door of claim 2, wherein the fusible link plug further comprises a melting core, wherein the melting of the melting core allows the compression spring to drive the firing pin against the slave pin. 4. The fire resistant door of claim 1 wherein the collapsible supporting member further comprises a gas spring having a pressurized cylinder core and a pressure release valve. 5. The fire resistant door of claim 4 further comprising a threaded hollow stud adapted to be connected to the pressure release valve, wherein the slave pin can move into the threaded hollow stud and engage the pressure release valve to bleed gas out of the pressurized cylinder core. 6. The fire resistant door of claim 1 wherein the door has a bottom wall, a top wall and side walls, and wherein the top and side walls comprise aluminum material. 7. The fire resistant door of claim 6 wherein the bottom wall comprises an outside surface and wherein a layer of intumescent material is applied to the outside surface of the bottom wall. 8. The fire resistant door of claim 6 wherein the top wall comprises an outside surface and wherein no cementitious material is applied to the outside surface of the top wall. 9. The fire resistant door of claim 1 wherein the frame further comprises a flange adapted to engage the door when the door is in a closed position. 10. The fire resistant door of claim 9 wherein the flange further comprises a fiberglass gasket connected to the flange. 11. A fire resistant door designed to prevent the spread of fire comprising: a frame; a heat activated self closing mechanism including a trigger mechanism and a collapsible supporting member; a door hingedly connected to the frame, the door having a bottom wall, a top wall, and side walls, the bottom wall having an outside surface and the top wall having an outside surface, wherein the door is horizontally hinged to the fame; and a layer of intumescent material on the outside surface of the bottom wall, and the outside surface of the top wall being clear of additional insulating materials. 12. The fire resistant door of claim 11 wherein the top wall is clear of cementitious material. 13. The fire resistant door of claim 11 wherein the trigger mechanism further comprises a firing pin, a fusible link plug, and a slave pin spaced from the firing pin by the fusible link plug. 14. The fire resistant door of claim 13 wherein the trigger mechanism further comprises a compression spring biased against the firing pin, which actuates the firing pin when the fusible link plug melts. 15. The fire resistant door of claim 14 wherein the fusible link plug further comprises a melting core, wherein the melting of the melting core allows the compression spring drive the firing pin against the slave pin. 16. The fire resistant door of claim 13 wherein the trigger mechanism interacts with the collapsible supporting member to collapse the collapsible supporting when sufficient heat is applied to the door. 17. The fire resistant door of claim 11 wherein the door has a bottom wall, a top wall and side walls, and wherein the top and side walls comprise aluminum material. 18. A fire resistant door designed to prevent the spread of fire comprising: a frame: a door hingedly connected to the frame; a collapsible supporting member adapted to hold the door spaced from the frame in an open position; and a heat activated self closing mechanism comprising a trigger mechanism including a firing pin and a fusible link, wherein the fusible link melts when exposed to sufficient heat which actuates the firing pin, and wherein the trigger mechanism interacts with the collapsible supporting member to collapse the collapsible supporting member when sufficient heat is applied to the door.
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