|
Match
|
Document |
Document Title |
|
|
5015420 |
Evaporative cooling
An improved evaporative cooler containing a new and unique designed funnel induction system, which creates a greater vacuum of air drawn directly through each pad frame equally, and into the split...
|
|
|
5007944 |
Process for increasing the selectivity of asymmetric membranes
A method for producing an improved membrane for separating gases in mixtures including forming an integral, asymmetric polyether imide membrane, treating the membrane with at least one organic...
|
|
|
4985054 |
Foam-bursting device
A foam-breaking device comprising a heating element enclosed in a synthetic resin membrane.
|
|
|
4983434 |
Filter laminates
An expanded porous polytetrafluoroethylene (PTFE) membrane is employed in laminar conjunction with an polytetrafluoroethylene felt; in which the felt is reinforced with a woven scrim.
|
|
|
4983192 |
Textile sheet filter
A sheet filter made up of a flat textile article carrying micrometric particles of a resistant and/or adsorptive additive, the textile article made up of fibers which upon heating become...
|
|
|
4983193 |
Filter and process for the production thereof
A filter for removing dust from fluids, which comprises fibers bonded each other with a binder and hot-pressed, having a fiber density of 0.01 to 0.1 at the fluid inlet side and a fiber density of...
|
|
|
4961974 |
Laminated filters
Laminated composite structures for use in making fluid filters are disclosed. Such structures comprise (a) a densified high loft layer of powder bonded nonwoven fabric, rebulkable by heating,...
|
|
|
4941897 |
Microporous filter and method
A filter for removing micron and sub-micron molecular-sized particulate matter from a moving gas stream and comprising an enclosed filter module having a gas inlet for being connected to a source...
|
|
|
4927435 |
Rotating drum filter
A perforated drum (10) rotates in a coaxial cylindrical housing (18) having three circumferential ports (19,22,23), and an axial outlet (24) at one end. The axis (11) is horizontal. A fibrous...
|
|
|
4923725 |
Article for absorbing cooking grease
A disposable article, suitable for absorbing and immobilizing grease generated during cooking, has a housing containing an absorbent bed of particles and polyolefin microfibers.
|
|
|
4917714 |
Filter element comprising glass fibers
Provided is a strong, flexible filter element comprising a wet laid non-woven element of glass fibers, synthetic short fibers, and polymer fibrids having a softening point below the softening point...
|
|
|
4906261 |
Smoke evacuation system
A smoke evacuation system for use in surgical procedures in a surgical area is disclosed comprising a portable evacuation hood configured to be disposed proximate a surgical site for receiving...
|
|
|
4904343 |
Non-woven activated carbon fabric
An air and water vapor permeable, toxic vapor absorptive non-woven fabric material comprising a web-laid sheet containing fibrillated acrylic fiber, and an activated carbon constituent selected...
|
|
|
4904288 |
Filter element for circulating air systems
A reusable air filter assembly for use in forced air heating and cooling systems includes an inlet stage filter medium consisting of a single layer of fabric woven in an egg-crate pattern and of...
|
|
|
4902423 |
Highly air permeable expanded polytetrafluoroethylene membranes and process for making them
A thin, low density porous polytetrafluoroethylene membrane having very large pores and heretofore unknown high air permeabilities is described. The membrane is produced by a particular series of...
|
|
|
4902306 |
Dual-dipole electrostatic air filter
A filter assembly (10) for removing particulate matter from air forced therethrough comprises two pairs of oppositely charged woven electrostatic filtering material. Each pair of electrostatic...
|
|
|
4902449 |
Evaporative cooler pad and method of forming same
An evaporative cooler pad has opposing faces and is formed from a substantially noncompressible batt of substantially uniformly distributed natural cellulosic lightweight elongate segments such as...
|
|
|
4883507 |
Filter comprising a material obtained by freeze-drying, method of preparation and use especially in pharmacy
The present invention relates, by way of a novel industrial product, to a filter for gaseous fluid, which contains a lyophilized and compressed filter element in the form of a porous layer.
|
|
|
4877433 |
High performance gas filter assembly
The high-performance filter assembly has a filter paper made of synthetic or glass fibers and a fine particle checking member provided on the air outlet surface of the filter paper so as to overlap...
|
|
|
4874659 |
Electret fiber sheet and method of producing same
An electret fiber sheet has polarized charges on its surface and preferably has charges in ordered orientation across it. The polarized charges are present in an amount of at least 7×10 -11 C/cm...
|
|
|
4861353 |
Filter element and assembly
A tubular textile of filamentary poly (tetrafluoroethylene) useful to prolong the mechanical life of a filter material. An assembly for filtering comprising a cage, the tubular filamentary PTFE,...
|
|
|
4859216 |
Process and equipment for the treatment and recovery of solvent vapors by recycling on active charcoal
Method and equipment for recovering solvent from a gaseous waste by adsorption of the solvent on active charcoal in fiber form followed by desorption with a gaseous regenerating fluid which can be...
|
|
|
4856625 |
Cylinder type air damper with filter for storage box
A cylinder type damper device for damping the opening and closing movement of a storage box includes a cylinder member enclosing air therein, an end cap with a filter therein and a rod reciprocally...
|
|
|
4840838 |
High temperature filter felt
A high temperature filter felt comprising a scrim and an entangled batt. The machine-direction component of the scrim is made up of intermeshed continuous filament yarns which are 40 to 75% glass...
|
|
|
4830643 |
Expanded polytetrafluoroethylene tubular container
A container for adsorbing components present in an environment, which comprises a tubular structure of expanded, porous polytetrafluoroethylene sealed at both ends, so as to encapsulate an...
|
|
|
4824451 |
Melt-blown filter medium
HEPA or pre-HEPA filter media are made by forming a web of melt-blown polypropylene fibers. The melt-blown process is accomplished at a low through-put of about 1 pound per inch of die width per...
|
|
|
4816328 |
Breathable, non-linting laminate
A flexible, breathable, antistatic, non-flammable, filtering, non-linting, clean and cleanable composite laminate is provided. The laminate comprises a middle layer of a non-flammable fabric,...
|
|
|
4784892 |
Laminated microfiber non-woven material
Non-woven material useful for example for disposable wipers and the like which comprises a layer of meltblown polymeric microfibers inter-mixed with fibres of absorbent material and/or absorbent or...
|
|
|
4774001 |
Supported microporous membrane
A supported microporous membrane comprising a composite of a microporous membrane and a synthetic thermoplastic web of microfibers secured to the membrane without the use of added adhesive...
|
|
|
4767426 |
Membrane filter tube and method of preparation
A membrane filter which comprises a porous, self-supporting, end axially-compressible filter tube, and a microporous membrane sheet bonded to the external surface of the filter tube, the membrane...
|
|
|
4765812 |
Air laid filtering material
Filtering media consist of formable air laid batting comprising a thermoplastic or thermosetting binder resin and a fiber mixture comprising coarse fibers, such as wood pulp and man-made fibers,...
|
|
|
4759782 |
Coalescing filter for removal of liquid aerosols from gaseous streams
A coalescing filter capable of removing liquid aerosols (such as water and oil) from gaseous streams with high efficiency. The filter comprises three layers, (a) an intermediate fibrous layer...
|
|
|
4753730 |
Filter for separating substances having lipophilic and/or oleophilic and/or apolar properties from different liquids, gases and vapors
A filter for separating substances having lipophilic and/or oleophilic and/or apolar properties, such as fats, oils, substituted or unsubstituted hydrocarbons, from different liquids, gases and...
|
|
|
4728349 |
Air filter medium
An air filter medium, in which a dust-collecting layer of glass fibers of a diameter necessary for obtaining a desired dust-collecting efficiency is formed on a supporting fiber layer of low...
|
|
|
4711649 |
Air filter and method
An air filter and method are presented whereby contaminants such as cotton dust are reduced to an acceptable level in textile mills or the like. The air filter employs an advanceable medium which...
|
|
|
4697462 |
Active cloudwater collector
A cloud water collector is disclosed comprised of a sampler duct having a plurality of spaced Teflon strands, in the form of screens, mounted across the conduit at an acute angle facing the open...
|
|
|
4689059 |
Cleaner apparatus for toxic or hazardous substances
The present invention relates to an apparatus for cleaning hazardous or toxic solid and liquid substances. The apparatus generally comprises a vacuum cleaner having a housing and an arrangement for...
|
|
|
4689058 |
Disposable stove hood filter
A composite stove hood filter consists of a primary metal mesh filter and a nonwoven, secondary disposable filter. The secondary filter is a low basis weight (0.2 oz./yd. 2 to 1.0 oz./yd. 2 )...
|
|
|
4676904 |
Filter sheet which is free of asbestos
A filter sheet which is free of asbestos, and which contains cellulose, filtering aids such as diatomite, perlite, etc., and cationically modified material in the form of cellulose on which are...
|
|
|
4676807 |
Process for removal of liquid aerosols from gaseous streams
Processes for the high efficiency removal liquid aerosols from gaseous streams and coalescing filters for carrying out such processes are provided. The filter comprises a porous medium having a...
|
|
|
4668258 |
Gas filter
A gas filter suitable for an ostomy bag comprises a pad impregnated with a deodorizing agent (e.g., activated carbon) and made of any open cell plastic foam material which is laminated together...
|
|
|
4666479 |
Semiconductor wafer container
This invention relates to a semiconductor wafer container having an air filter for removing fine particles from air, which serves to allow air to pass through a body of the container. This causes...
|
|
|
4661132 |
Themally formed gradient density filter
A fluid filter is formed by producing an air laid nonwoven batt comprising a randomly arranged mixture of thermoplastic fibers and fibers which are not thermoplastic. The batt is then cut into...
|
|
|
4655807 |
Material for gas separating membrane
This invention provides a material for gas separating membrane comprising a fluorine-containing acrylate or methacrylate polymer or a crosslinked compound of the polymer.
|
|
|
4650506 |
Multi-layered microfiltration medium
A multilayered microfiltration medium exhibiting high particle capture efficiency and minimal flow restriction having a base substrate layer, a fine fiber filtration or efficiency layer deposited...
|
|
|
4642262 |
Method of making fibrids from thermoplastics
Disclosed is a method of making fibrids from thermoplastics synthetics and copolymers thereof by expanding by vaporization, in the presence of a gaseous propellant, a polymer solution under...
|
|
|
4636231 |
Panel air filter
A filter element and method for making it include the steps of providing a pleated paper filtering media and providing a batt-like filtering media containing thermoplastic fibers which is slightly...
|
|
|
4627863 |
Filter for air handling equipment
A filter apparatus for air handling systems in which the air inlet grille of the system is provided with an additional filtration medium which extends across the full flow passage area of the...
|
|
|
4626266 |
Carburetor chamber cover device
A carburetor chamber cover device for covering a carburetor chamber of a portable power-driven machine such as a chain saw. The carburetor chamber accommodates an air cleaner and a carburetor for...
|
|
|
4612237 |
Hydraulically entangled PTFE/glass filter felt
A non-woven felt suitable for use as a filter comprised of poly(tetrafluoroethylene) and glass fibers hydraulically entangled to a supporting scrim and a process for making said felt are disclosed....
|