The present invention discloses a liquid crystal photo-alignment device. The liquid crystal photo-alignment device includes two parallel guide rails, a platform sandwiched between the two guide rails, a support assembly slidably mounted on the two guide rails, and a cleaning assembly mounted to the support assembly. The platform has a supporting surface for supporting a LCD panel. Each support assembly includes a supporting beam across the platform, two supporting arms extending from opposite ends of the supporting beam, and two sliders connected to the respective supporting arms. The sliders are slidably mounted in the guide rails. The cleaning assembly faces toward the platform and is configured to clean up foreign objects on the platform.

An apparatus comprising one or more of a surface treatment apparatus having an air treatment member and a refuse container wherein at least one of the surface treatment apparatus and the refuse container is provided with one or more of (a) a dust control member providing a dust control agent comprising one or more of a liquid mist, positive ions and negative ions to an area below a dirt emptying outlet of a dirt collection region of the surface treatment apparatus; and, (b) a treatment applicator providing a treatment agent comprising one or more of a deodorizing agent, a disinfecting agent and a sanitizing agent to an interior volume of the air treatment member and an interior volume of the refuse container.

Disclosed is a method of cleaning a substrate processing apparatus in which a substrate having a surface wet by a liquid is brought into contact with a supercritical fluid so as to perform a drying process of drying the substrate. The method includes a cleaning gas filling process and an exhausting process. The cleaning gas filling process fills a cleaning gas containing isopropyl alcohol in the substrate processing apparatus. The exhausting process exhausts the cleaning gas from an inside of the substrate processing apparatus after the cleaning gas filling process.

Various welding accessory apparatus are disclosed herein. A welding accessory apparatus can include a welding lens and a vacuum assembly. The welding lens can be configured to filter at least one of ultraviolet, infrared, and visible light to a shade number of at least two. The vacuum assembly can have at least one intake aperture positioned proximate to the welding lens. A welding accessory apparatus can include a welding lens and a flexible curtain. The welding lens can be configured to filter at least one of ultraviolet, infrared, and visible light to a shade number of at least two. The flexible curtain can be positioned proximate to the welding lens and can be configured to provide protection from sparks and spatter generated during welding. A welding accessory apparatus can include a shielding strip and a fastening member. The shielding strip can be one of fabric and flexible film. The shielding strip can be configured to provide protection from sparks and spatter generated during welding. The fastening member can be affixed to the shielding strip.

The invention refers to a method of generatively manufacturing a three-dimensional object (2) in a process chamber (3) of a generative manufacturing apparatus (1) by a layer-by-layer application and selective solidification of a building material (13) within a build area (10) arranged in the process chamber. In the course of this, while the object is being manufactured, a process gas is supplied to the process chamber by means of a gas supply device and is discharged from the process chamber via an outlet (42a, 42b). According to the invention, the gas supply device is designed and/or arranged relatively to the build area and/or controlled such that a gas stream (40) of the process gas streaming through the process chamber is shaped in such a manner that a substantially elongate oval impingement area (A3) of the gas stream (40) is generated within the build area (10).

A fume extraction apparatus having an outer conduit with a first elongated open area extending at a first angle and an inner conduit configured for connection to a venting system and received within the outer conduit. The conduits are rotatable relative to one another. The inner conduit has a second elongated open area extending at a second angle different from the first angle. Overlapping portions of the open areas defines an extraction aperture providing a fluid communication between an environment of the outer conduit and an interior of the inner conduit. Different relative orientations of the conduits define different positions of the extraction aperture, so that the extraction aperture is movable upon relative rotation of the inner and outer conduits. A method of extracting fumes during operation of a laser head is also discussed.

A retractor suction catheter used during surgery is provided. The suction catheter may include a flexible tube having an open end and a closed end. The open end may include a fitting. The tube may further include a plurality of slits in between the open end and the closed end. The tube may fit through a subject's oral cavity and out of the mouth. The tube may retract the soft palate so that the surgeon may perform the proper surgery. Further, a vacuum may be attached to the fitting, and therefore liquids, fumes and debris may be removed through the apertures.

Presented are a method and apparatus for attachment and evacuation. The apparatus includes a housing having an opening, and a motor maintained within the housing, the motor operable to urge a fluid to pass through the opening. The apparatus further includes an adjustable element maintained within the opening, the adjustable element operable to change a size of the opening to a plurality of different diameters, and a knob moveably affixed to the housing, the knob operable to change the adjustable element to the plurality of different diameters.

A retractor suction catheter used during surgery is provided. The suction catheter may include a tube having an open end and a closed end. The open end may include a fitting. The tube may further include a plurality of openings in between the open end and the closed end. The tube may fit through a subject's oral cavity and out of the mouth. The tube may retract the soft palate so that the surgeon may perform the proper surgery. Further, a vacuum may be attached to the fitting, and therefore fumes and debris may be removed through the apertures.

A cleaner for an ionizer may include a communication interface, a cleaning member, a driver and a controller. The communication interface may be configured to communicate information with the ionizer. The cleaning member may be moved along a wire of the ionizer to remove and collect particles. The driver may be configured to drive the cleaning member. Further, the driver may recognize a starting of the cleaning member from a beginning spot of the wire, an arriving of the cleaning member at an ending spot of the wire, or a returning of the cleaning member to the beginning spot of the wire. The controller may control whole operations of the cleaner. The whole operations of the cleaner may include identifying states including the driving of the ionizer through the communication interface, removing the particles on the wire by driving the cleaning member through the driver, etc.