Abstract: A filter apparatus includes a filter panel having inner and outer surfaces and a configuration for completely covering a computer housing ventilation opening. The filter apparatus includes an adhesive layer permanently adhered to the inner surface of the filter panel. A thermochromic region is positioned on the outer surface of the filter panel which changes color as temperature increases. The thermochromic region includes an ink layer and a wax layer positioned atop the ink layer. The wax layer includes a thermochromic dye having a color different from the color of the ink layer. The color of the thermochromic dye blocks the color of the ink layer at an ambient temperature and is transparent to allow the ink layer color to be seen at an activation temperature. Therefore, the filter apparatus provides an indication when the filter is full and heat is building within the housing as a result.

Abstract: A fluid separator is connected to a vent of a diesel engine to trap particles, such as oil particles, that may be entrained in fluid that is being vented from the internal engine block to control pressure in that engine block. The fluid separator includes a housing that has an inlet port, an outlet port and a drain port. The drain port is located in a trap area of the housing and is opened to remove trapped particles and trapped oil to a suitable location.

Abstract: A two-stage filtration system is coupled with an oven, such as a solder reflow oven, to remove a vapor stream from the oven and to remove organic compounds that have volatilized from a solder flux and other contaminants from the vapor stream. The filtration system includes a first stage for trapping larger particles and a second stage including a packed bed of wettable media, such as steel balls, for trapping smaller particles and serving as a nucleation site for condensed organic compounds. The first stage can be a centrifugal self-cleaning element in the form of a mesh strainer coupled with a rotary motor for spinning the mesh strainer.

Abstract: A filter structure of a vehicle air conditioner comprises a filter cartridge provided with a plurality of filter papers within a case and a light source. The light source is provided at a position within the filter papers for radiating light toward one side of the case. The light is blocked when pollutants deposited on the filter papers are enough to cause a contaminated state of the filer to reach a preset state. A display section is provided on the case for transmitting the light, radiated from the light source, to be visually checked on the external side. Therefore, the filter structure allows a driver to check a proper exchange time of the filter visually through a display section in which a display state changes according to a contaminated state of the filter.

Abstract: An end of service life indicator (ESLI) device for a fluid filter is included on the filter and visually indicates when the life of the filter has expired. The ESLI indicates the depletion of the filter by changing the color density on a surface of the device to a color density having a well distinguishable contrasting pattern that is easily recognizable even by individuals who are color-blind. The contrasting pattern may express text indicative of the state of the filter.

Abstract: Filter media and filter structure or media pack can be engineered to exhibit high initial efficiency and to surface load particulate removed from a gaseous stream. The filter technology protects engine operation from ingested particulate and accumulates the particulate as a surface loaded layer visible on the surface of the structure. The particulate accumulates as a surface loaded layer until it achieves a certain depth of particulate or gray scale characteristic or color depth indicative of the end of the useful life of the filter prompting a change of the filter structure. The filter structure is characterized by its ability to surface load particulate, avoid accumulation of particulate in the depth media and enhance the characteristics of the material through surface loading. Such technology is particularly useful in light duty vehicle maintenance technology.

Abstract: A method for inspecting the integrity of diesel exhaust filter by introducing air under pressure through one end of the structure and detecting the presence of air flow at an opposing end surface. The diesel exhaust filter is tested green.

Abstract: A compact, portable, lightweight, low power consuming, convenient, versatile and sterile laminar airflow device, useful in obtaining a workspace substantially devoid of airborne particulate contaminants, said device having a body (C) divided into an upper and lower chambers; the upper chamber housing one or more pre-filtration members (B), a motor (T) driving a fan (S), and one or more filters (U) located below the motor; and the lower chamber provided with a slideable front panel (M), a removable platform (X) located at the lower portion of the chamber and a perforated plane (N) placed on the removable platform.

Abstract: A disposable filter for filtering exhaled gas in a breathing apparatus has a housing with an inlet and an outlet and a filter unit disposed in the housing. To increase the efficiency of the disposable filter a water trap is integrated with the housing, with water that condenses in the filter unit being collected in the water trap.

Abstract: The invention relates to a portable air sterilization and filtration apparatus for removing contaminants from the ambient atmosphere, having a housing with an inlet opening and an outlet opening, filter media and ultraviolet light source, and a motorized fan for maintaining a flow of air through the housing from the inlet opening to the outlet opening. The invention also includes easy access to the filter medium and to the ultraviolet light sources for periodic replacement or cleaning, and integrates a safety lock feature whereby the removal of the filter or the removal of an ultraviolet light source would open the power circuit to the ultraviolet light source, preventing accidental irradiation of the user. The ultraviolet light sources also activate an indicator light viewable by the user when the ultraviolet light sources are energized.

Abstract: A compact, portable, lightweight, low power consuming, convenient, versatile and sterile laminar airflow device, useful in obtaining a workspace substantially devoid of airborne particulate contaminants, said device comprising a body (C) divided into an upper and lower chambers; the upper chamber housing one or more pre-filtration members (B), a motor (T) driving a fan (S), and one or more filters (U) located below the motor; and the lower chamber provided with a slideable front panel (M), a removable platform (X) located at the lower portion of the chamber and a perforated plane (N) placed on the removable platform.

Abstract: A gas condensing and cooling system for cooling hot vaporous emissions from a hot vaporous emissions source to a level below prescribed regulatory limits that includes a cooling unit that operates using a readily available pressurized natural gas as the refrigerant element within the cooling unit and includes a multi-chamber condenser unit having a number of chambers each containing a volume of porous rock suspended above a liquid barrier.

Abstract: The present invention relates to an apparatus for separating liquids and solids from a gas stream and simultaneously coalescing liquids from the gas stream. The apparatus includes a closed vessel having a longitudinally extending length, an initially open interior, an input port at an extent and an output port at an opposite extent thereof. There is a partition located within the vessel interior that divides the vessel interior into a first stage and a second stage. There is at least one opening in the partition. A separator/coalescer filter element is disposed within the vessel to sealingly extend from within the first stage through the opening into the second stage. There is a chevron-type seal or an O-ring seal between the filter element and the opening.

Abstract: Disclosed is a change indicator for a filter for use in a gaseous circulation system, such as a forced air heating and cooling system. The change indicator includes an air impervious patch that is secured to the filter. The portion of the filter media adjacent to the change indicator changes appearance in response to the accumulation of contaminants at a much slower rate than the remainder of the air filter. The accumulation of contaminants progresses inwardly from the region adjacent the periphery of the change indicator towards the region adjacent to the center. Once the appearance of the filter media beneath the change indicator fully changes from periphery to the center, that is an indication that the air filter is in need of cleaning or replacement.

Abstract: The present invention relates to an apparatus for separating liquids and solids from a gas stream and simultaneously coalescing liquids from the gas stream. The apparatus includes a closed vessel having a longitudinally extending length, an initially open interior, an input port at an extent and an output port at an opposite extent thereof. There is a partition located within the vessel interior that divides the vessel interior into a first stage and a second stage. There is at least one opening in the partition. A separator/coalescer filter element is disposed within the vessel to sealingly extend from within the first stage through the opening into the second stage. There is a chevron-type seal or an O-ring seal between the filter element and the opening.