Abstract: A humidifier pad made of a plurality of laminated sheets connected together in a stack. Each of the sheets is made of a two layer laminate material made of a first layer of a rigidifying material, such as aluminum, and a second layer made of an absorbent layer, such as paper. The layers of each of the sheets are first laminated together, and then each sheet is slit and expanded in a conventional manner. Subsequently, each sheet is bonded to a next adjacent sheet to form a pad.

Abstract: An air filter including a plurality of air-pervious sheets of electret filtration material. The sheets are disposed in a parallel relationship to form a stack of sheets, and each of the sheets has a plurality of slits formed therein for subsequent expanding to form openings. The stack is connected together at opposing ends, such as by bonding. The sheets can be pleated by mounting in a frame. The frame has opposing ends to which the opposing ends of the stack are mounted. The filter media initially has no frame and is not pleated, but is in a flat pad form that is expanded to be installed into a frame. The frame is then mounted in an appliance, such as a room air filter. When the filter is inserted into the filter housing it is expanded and can take a pleated form.

Abstract: An air filter including a plurality of air-pervious sheets of electret filtration material. The sheets are disposed in a parallel relationship to form a stack of sheets, and each of the sheets has a plurality of slits formed therein for subsequent expanding to form openings. The stack is connected together at opposing ends, such as by bonding. The sheets can be pleated by mounting in a frame. The frame has opposing ends to which the opposing ends of the stack are mounted. The filter media initially has no frame and is not pleated, but is in a flat pad form that is expanded to be installed into a frame. The frame is then mounted in an appliance, such as a room air filter. When the filter is inserted into the filter housing it is expanded and can take a pleated form.

Abstract: A filter media and a pleated filter with a first layer of filtration media, a layer of support material and a second layer of filtration media on the opposite side of the support material as the first layer of filter media. All three layers are laminated together and pleated. The support material provides the required stiffness and rigidity for the pleating process. The physical characteristics of the upstream layer of filtration media are contemplated to be different than the characteristics of the downstream layer of filtration media.

Abstract: A composite filter media having excellent dust-releasing properties provided with a layer of netting formed of a low surface free energy material that is hot calendered to the upstream surface of a supporting layer formed of non-woven synthetic fibers. A filtering layer formed of non-woven synthetic fibers is laminated to the downstream surface of the supporting layer. The filtering layer may include an electrostatic charge to increase filter efficiency at a reduced pressure drop across the composite media.

Abstract: An air filter including a plurality of air-pervious sheets of electret filtration material. The sheets are disposed in a parallel relationship to form a stack of sheets, and each of the sheets has a plurality of slits formed therein for subsequent expanding to form openings. The stack is connected together at opposing ends, such as by bonding. The sheets can be pleated by mounting in a frame. The frame has opposing ends to which the opposing ends of the stack are mounted. The filter media initially has no frame and is not pleated, but is in a flat pad form that is expanded to be installed into a frame. The frame is then mounted in an appliance, such as a room air filter. When the filter is inserted into the filter housing it is expanded and can take a pleated form.

Abstract: A humidifier pad made of a plurality of laminated sheets connected together in a stack. Each of the sheets is made of a two layer laminate material made of a first layer of a rigidifying material, such as aluminum, and a second layer made of an absorbent layer, such as paper. The layers of each of the sheets are first laminated together, and then each sheet is slit and expanded in a conventional manner. Subsequently, each sheet is bonded to a next adjacent sheet to form a pad.

Abstract: An evaporative pad comprising a plurality of layers of highly absorbent slit and expanded wicking papers and at least one layer of slit and expanded non-absorbent material carrying a coating of adsorbent particles bonded to exposed surfaces of the layer of non-absorbent material disposed between a pair of adjacent wicking layers in the pad. The wicking layers and non-absorbent layer coated with adsorbent particles are disposed in parallel overlying relationship to one another and bonded together to form the evaporative pad.

Abstract: A humidifier pad with multiple layers of slit and expanded paper laminated together. At least one, and in some preferred embodiments, up to half of the paper layers comprise substantially nonwicking paper and the remaining layers comprise highly absorbent wicking paper. Wick type humidifier pads are particularly useful in humidifiers wherein the lower portion of the pad is submerged in a reservoir of water. The upper portion of the pad, exposed to a flow of air to be humidified, is supplied with water due to the high rate of capillary rise featured by the wicking paper layers. Including non-wicking layers wetted by the wicking layers provide an output capacity comparable to conventionally constructed pads which include all wicking paper layers and an attendant saving of the cost of materials.

Abstract: Odor-absorbing articles of clothing particularly useful for hunting big game animals wherein the clothing incorporates an intermediate odor-absorbing layer or sheet of material comprising non-woven synthetic fibers impregnated with activated carbon powdered particles. The relatively low cost odor-absorbing sheet possesses a flexible, readily pliant characteristic which permits its incorporation into an article of hunting clothing to preserve the required comfort to the wearer. The odor-absorbing sheet includes a binder which upon drying, adheres the carbon particles to the synthetic fibers without causing the sheet to become stiff and unpliant. The preferred activated carbon loading is about 100 to 200 weight percent of the weight of the non-woven sheet material.

Abstract: A method of removing human associated scents from articles of hunting clothing prior to wearing such articles during a hunting interval for big game animals includes placing such articles of hunting clothing in close association with a sheet of material impregnated with activated carbon within an air impervious resealable container prior to hunting. The clothing remains in the container overnight, or at least for a time sufficient to permit the human associated scent emanating from the clothing to be adsorbed by the activated carbon impregnated in the sheet of material placed in close association with the clothing. The articles of clothing may then be removed from the container and sheet of material and worn during the next hunting interval significantly diminishing an additional source of human associated scents which may be detected and thus alarm a big game animal. After the hunting interval is completed, the hunting clothing may be again deodorized in the same manner prior to the next time of use.

Abstract: An improved diaper container to temporarily store soiled diapers prior to final disposal thereof which is characterized by an outer fluid impervious shell provided with a removably mounted liner. The liner comprises a pad of non-woven synthetic fibers impregnated with an odor adsorbing material, such as activated carbon. The outer shell is provided with a hinged lid for access to the interior of the container and the liner is slideably mounted within the outer shell in a snug fit with the inner walls of the outer shell. The activated carbon entraps noxous odors within the liner to effectively prevent the odors from escaping from the container when it is opened.

Abstract: A filter pad for range hoods is disclosed which comprises a plurality of sheets formed of wood paper pulp fiber material. Each sheet is slit and expanded to form a plurality of adjacent multi-sided openings. The outermost sheet on the upstream side of the pad is provided with a plurality of parallel sets of three printed lines formed by oil soluble dye components. The lines flanking each central line in each set are of selected different colors. Each line adjacent to the central line in each set is spaced at a selected distance from the central line to permit the different color dye components to bleed together upon a given loading level of the pad with oil and fat aerosols to form a band having a third different color to visually indicate that the filter pad is in need of replacement.

Abstract: An improved filter pad particularly useful to remove offensive pet odors emanating from animal crates and in aquariums is disclosed. The filter pad includes a base formed of unwoven, randomly oriented synthetic fibers impregnated with a mixture of zeolite particles and activated carbon particles effective to substantially reduce gaseous components having an offensive odor and discoloring agents in aquarium applications.

Abstract: A multiple stage filter assembly which combines a permanently framed particulate filter media layer with an odor and particulate removal filter media layer which is removably mounted to the particulate permanent filter frame in overlying relationship to the outer surface of the particulate layer. The odor removal filter media layer is held in position by a plurality of filter retaining members which cooperate with the main frame structure to provide support for the gaseous filter layer. The retaining members function in a manner which permits simple removal and replacement of the gaseous filter layer without disturbing the permanently framed particulate filter layer.

Abstract: An improved filter construction for odor adsorption adapted to fit into a frame provided with front and rear support faces. The filter media consists of one or more sheets of non-woven material impregnated with activated carbon particles. Each sheet is provided with a plurality of slit and expanded openings to permit gaseous flow through said sheet. The sheet material comprises a combination of cellulose and synthetic fibers in a weight percentage range of between at least 30 to 50 percent of cellulose fibers and 1 to 10 percent of synthetic fibers wherin the combination of the two fibers represent at least 40 percent of the total composition of the sheet. The activated carbon content is between 35 to 50 percent of the total composition by weight. A latex binder material and a wet strength resin are included for fabrication of the sheet and to reduce dusting of the charcoal.