An air filtration system for filtering air drawn into a substantially enclosed environment, such as a room, having an access opening includes a box having sidewalls, a flexible sheet of substantially air-impermeable material sized to cover the access opening of the environment, at least one filter h
An air filtration system for filtering air drawn into a substantially enclosed environment, such as a room, having an access opening includes a box having sidewalls, a flexible sheet of substantially air-impermeable material sized to cover the access opening of the environment, at least one filter having a body and a rigid rim encircling the body, and a pump having an inlet conduit through which air is drawn into the pump during pump operation. The components can be assembled to form a filter-supporting unit and, with the aid of the flexible sheet, sealed across the access opening to convert the environment into a shelter into which filtered air is pumped.
대표청구항▼
An air filtration system for filtering air drawn into a substantially enclosed environment, such as a room, having an access opening includes a box having sidewalls, a flexible sheet of substantially air-impermeable material sized to cover the access opening of the environment, at least one filter h
An air filtration system for filtering air drawn into a substantially enclosed environment, such as a room, having an access opening includes a box having sidewalls, a flexible sheet of substantially air-impermeable material sized to cover the access opening of the environment, at least one filter having a body and a rigid rim encircling the body, and a pump having an inlet conduit through which air is drawn into the pump during pump operation. The components can be assembled to form a filter-supporting unit and, with the aid of the flexible sheet, sealed across the access opening to convert the environment into a shelter into which filtered air is pumped. es. 10. The method according to claim 1, wherein said starting material comprises dust produced by an electric arc furnace. nal midplane intersecting the sagittal walls, so as to enable the cage to occupy a position that is symmetrical to that of another, second cage by being turned upside-down. 3. An implant according to claim 1, wherein the cage has at least one intermediate transverse wall connected to the sagittal walls and extending at a distance from the anterior and posterior transverse walls to define separate respective volumes for filling with bone. 4. An implant according to claim 1, wherein the at least one retention edge projects from bottom and top extreme extension planes of the transverse walls. 5. An implant according to claim 1, wherein at least one retention edge is formed by chamfering connection portions of the transverse walls where the transverse wall join the outer sagittal wall. 6. An implant according to claim 1, wherein a chamfer extends transversely outwards from each retention edge such that the sagittal wall presents a frustoconical profile. 7. An implant according to claim 6, wherein each retention edge extends along the rims of the outer sagittal wall in a continuous manner. 8. An implant according to claim 7, wherein each retention edge presents a profile that is rectilinear in the sagittal plane. 9. An implant according to claim 6, wherein each retention edge extends as a plurality of segments between the anterior transverse wall and the posterior transverse wall. 10. An implant according to claim 9, wherein each retention edge presents a profile that is rectilinear in the sagittal plane. 11. An implant according to claim 9, wherein each retention edge presents a profile that is convex in the sagittal plane. 12. An implant according to claim 7, wherein each retention edge presents a profile that is convex in the sagittal plane. 13. An implant according to claim 1, wherein each retention edge is cut locally substantially perpendicular to the sagittal plane to define at least one step configured to oppose withdrawal of the cage from the locking position in the sagittal plane. 14. An implant according to claim 1, wherein at least one of the transverse walls has a top edge and a bottom edge, each edge comprising at least one retention tooth configured to prevent the cage from being withdrawn from the locking position in the sagittal plane. 15. An implant according to claim 14, wherein the transverse walls present different determined heights in the sagittal plane so that between them they define a slope which is adapted to a physiological shape of the discal space. 16. An implant according to claim 1, wherein the sagittal walls are provided with through holes opening out to the inside of the volume for filling with bone in order to encourage bone fusion.
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이 특허에 인용된 특허 (10)
McGee Terrill A. (525 S. Ardmore St. Los Angeles CA 90020), Air scrubbing and purifying system.
Maskell,Thomas Joseph, Portable device with interchangeable air cleaning modules for cleaning the air outside of an existing enclosed space and delivering the cleaned air into the existing enclosed space.
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