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 event of fire, by releasing gas from a supporting gas spring.

대표청구항 ▼

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 event of fire, by releasing gas from a supporting gas spring. claim 2, comprising further step of: encrypting, by the back-up function, the named file data contents before queuing for transfer to the archive server on the global computer network. 4. The method as in claim 2, comprising further step of: sensing idle times on the network connection between the client and the global computer network, by the back-up function, and sending the queued files to the archive server during the idle times. 5. The method as in claim 2, comprising further step of: displaying, by the back-up function, a status indicator when the back-up function is active. 6. The method as in claim 2, comprising further step of: archiving, by the archive server function, number of copies of the file identified by a file-name, equal to a back-up-level parameter being present in the archive server function. 7. A system of archiving data files from a client to an archive server, comprising: a. a back-up function in the client, wherein the back-up function being activated automatically only as an incident of a global computer network connection by the client, assembling a first data record having at least one file-name and date-stamp of data file in the client, connecting to the archive server on the global computer network, and sending the first data record; b. an archive server function in the archive server on receiving the first data record comparing with files already present in the archive server, creating a second data record having at least one file-name and date-stamp of data file not in the server, and sending the second data record to the client. 8. The system as in claim 7, further comprising: a. the back-up function on receiving the second data record, queuing the files therein for transfer over the global computer network and sending to the archive server; b. the archive server function, receiving the queued data files, and archiving the files. 9. The system as in claim 8, further comprising: the back-up function sensing idle times on the network connection between the client and the global computer network, and sending the queued files to the archive server during the idle times. 10. The system as in claim as in 8, comprising: the back-up function encrypting the named file data contents before queuing for transfer to the archive server on the global computer network. 11. The system as in claim 8, comprising: the back-up function displaying a status indicator when the back-up function is active. 12. The system as in claim as in 8, further comprising: the archive server function archiving number of copies of the file identified by a file-name equal to a back-up-level parameter being present in the archive server function. 13. A system of archiving data files from a client to an archive server, comprising: a. client means, wherein the client means being activated automatically only as an incident of a global computer network connection by the client, assembling a first data record having at least one file-name and date stamp of data file in the client, connecting to the archive server on the global computer network, and sending the first data record; b. server means receiving the first data record comparing with files already present in the archive server, creating a second data record having at least one file-name and date-stamp of data file not in the server, and sending the second data record to the client. 14. The system as in claim 13, further comprising: a. the client means receiving the second data record, queuing the files therein for transfer over the global computer network and sending to the archive server; b. the server means receiving the queued data files and archiving the files. 15. The system as in claim 14, further comprising: the client means sensing idle times on the network connection between the client and the global computer network, and sending the queued files to the server during the idle times. 16. The system as in cl