Patent classifications
B01D46/90
Additive manufacturing apparatus and methods
This invention concerns an additive manufacturing apparatus for building a part by selectively consolidating flowable material in a layer-by-layer process comprising a build chamber (101) for building the part, a module (105, 106) for providing a focussed energy beam for consolidating flowable material in the build chamber, a gas flow circuit for generating a gas flow through the build chamber (101). At least one filter assembly (200, 201) may be arranged in the gas flow circuit, the or each filter assembly (200, 201) having associated therewith a valve (V-4, V-8) operable to seal the gas circuit upstream from the filter assembly (200, 201) and a valve (V-5, V-9) operable to seal the gas flow circuit downstream of the filter assembly (200, 201), the arrangement allowing a filter element (E-5, E-7) of the filter assembly (200, 201) to be changed whilst maintaining a controlled atmosphere in the build chamber (101). The apparatus may further comprise a purging device (210) configured to purge air from the or each filter assembly (200, 201) when the valves (V-4, V-5; V-8, V-9) associated with that filter assembly (200, 201) have sealed the filter assembly (200, 201) from the gas flow. Alternatively or additionally, a controller (131) may be arranged to control the valves (V-4, V-5; V-8, V-9) associated with the or each filter assembly (200, 201) such that the filter assemblies (200, 201) are closed off to gas flow from the build chamber (101) during a period in which the inert gas atmosphere in the build chamber (101) is compromised as a result of opening the door to the build chamber (101). The apparatus may comprise a pair of filter assemblies (200, 201) arranged in parallel within the gas flow circuit, the arrangement allowing a filter element (E-5, E-7) of the each filter assembly (200, 201) to be changed during a build by allowing the filter element (E-5, E-7) of one filter assembly (200, 201) to be changed whilst the filter element (E-5, E-7) of the other filter assembly (200, 201) is connected to filter particulates from the gas flow. A monitoring device (I-3, I-5) may be provided for detecting a property associated with the gas flow and a controller (131) arranged to control the valves to switch the filter assembly (200, 201) connected in line with the gas flow based upon signals from the monitoring device (I-3, I-5
DUST COLLECTOR HAVING VERTICAL FILTERS AND A FILTER CARRIAGE
A method for replacing a filter in a dust collector includes: accessing a filter carriage, at least one filter being connected to the filter carriage and being disposed inside a dust collector housing of the dust collector; lowering the filter carriage, the at least one filter being lowered with the filter carriage; translating the filter carriage out of the dust collector housing with the at least one filter; removing the at least one filter from the filter carriage; placing at least one other filter on the filter carriage; translating the filter carriage into the dust collector housing with the at least one other filter; and raising the filter carriage to lock the at least one other filter into an operational location.
Dust collector having vertical filters and a filter carriage
A removable filter system and a dust collector with the removable filter system. The dust collector includes a filter carriage movably connected to a carriage base; at least one filter and filter support removably connected to the filter carriage. The filter carriage is movable between at least three positions: in the first position the filter being in an operational location, in the second position the filter being vertically lower but inside the dust collector, and in the third position the filter being outside the dust collector. A method for replacing a filter in the dust collector includes lowering the filter with the filter carriage; translating the filter and carriage out of the dust collector housing; removing the filter from the carriage; placing a replacement filter on the carriage; translating the replacement into the dust collector housing; and raising the filter carriage to lock the replaced filter into an operational location.
IMPLANTABLE FLUID MOVEMENT DEVICE
An apparatus for moving a fluid to or from a cavity on a body of a human or mammal patient. The apparatus comprising a fluid movement device, an energy source adapted to supply energy to said fluid movement device and at least one connecting tube having a tube end. The at least one connecting tube being connected to the fluid movement device. The apparatus further comprises, a flexible patch. The fluid movement device and the at least one connecting tube forms a fluid moving arrangement adapted to be implanted inside the body of the human or mammal patient. The fluid movement device is adapted to move fluid from a treatment area via the at least one connecting tube to a delivery area. The flexible patch comprises a net structure adapted to be overgrown by human fibrotic tissue hen implanted in the patient
SiOx filtration unit and method for operating the SiOx filtration unit
There is provided a Czochralski puller installation for Si monocrystalline ingot growth, including: a Czochralski puller; a SiOx dust filter system; and a vacuum pump connected downstream of said SiOx dust filter system, the SiOx dust filter system including at least a first filtration branch having a first SiOx filter unit, and at least a second filtration branch having a second SiOx filter unit, the first filtration branch and the second filtration branch being disposed in parallel and connected to a common first connection point upstream of first and second upstream valves and to a common second connection point downstream of first and second downstream valves, the first and the second filtration branches being connected through a bypass branch having a needle valve for pressure equilibration between the first and the second filtration branches.
SPRAY BOOTH WITH CAROUSEL DRY FILTER MODULE
A spray booth especially adapted for painting operations having a dry filter module with features for allowing changing of the filters quickly and in a contained environment, which reduces exposure to non-authorized and non-properly-protected personnel. A carousel-like filter module flips a wall to move dirty filters into a containment space while placing clean filters in position to continue the painting process. The process and device in accordance with this invention is safe, repeatable, predictable, and capable of changing a large number of filters in a short a period of time, for example, during lunch break or other short break in the painting operation.
Blood clot removal device, system, and method
A blood clot removal device for removing blood clots from the vascular system of a patient is implantable in the patient's body. The blood clot removal device comprises a blood flow passageway, a filter provided in the blood flow passageway for filtering blood clots, and a cleaning device for cleaning the filter. By means of such blood clot removal device and system, the risk of blood clots reaching sensitive areas of the patient's body, such as the brain, is reduced.
DRAINAGE DEVICE COMPRISING AN ACTIVE FILTER
A filtering device for removing particles from a fluid of a patient is provided. The filtering device being implantable in the patient's body and comprising a cassette comprising a revolving member, said revolving member having at least two segments each holding a respective filter. The device further comprises a tube forming a fluid passageway through one of the filters in said cassette, wherein the cassette is adapted to, upon revolution of the revolving cylinder, change the filter positioned in the fluid passageway from a first one of said filters to a second one of said filters, thereby allowing particles present on the first filter to be moved away from the fluid passageway, while at the same time changing the filter positioned in the fluid passageway.
FILTER CLEANING
A filter device for a vacuum cleaner, including a turbine device, for generating at least one first and one second main air flow through at least a portion of the vacuum cleaner, and a control unit. The filter device includes a first chamber including a first filter element, a first outflow opening, a first inlet opening and a first pressure surge element, which divides the first chamber into a first and a second space and is reversibly movable between a first and a second position, the first main air flow being able to flow into the first space of the first chamber through the first filter element and to flow back out through the first outflow opening, a second chamber including a second filter element, a second outflow opening, a second inlet opening and a second pressure surge element, which divides the second chamber into a first and a second space and is reversibly movable between a first and a second position, the second main air flow being able to flow into the first space of the second chamber through the second filter element and to flow back out through the second outflow opening. The first pressure surge element and the second pressure surge element alternately are reversibly movable to alternately clean the first and second filters.
DUST COLLECTOR HAVING VERTICAL FILTERS AND A FILTER CARRIAGE
A removable filter system and a dust collector with the removable filter system. The dust collector includes a filter carriage movably connected to a carriage base; at least one filter and filter support removably connected to the filter carriage. The filter carriage is movable between at least three positions: in the first position the filter being in an operational location, in the second position the filter being vertically lower but inside the dust collector, and in the third position the filter being outside the dust collector. A method for replacing a filter in the dust collector includes lowering the filter with the filter carriage; translating the filter and carriage out of the dust collector housing; removing the filter from the carriage; placing a replacement filter on the carriage; translating the replacement into the dust collector housing; and raising the filter carriage to lock the replaced filter into an operational location.