Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 4464187 | Nesting air filters This invention provides an improved construction for air filters wherein the filter frame is provided with indentations or recesses adjacent to its opposite corners which allow a plurality of filters to nest together in a laterally offset relationship to ... | 08/07/1984 |
| 4453955 | Desiccant cartridge for laboratory desiccator A desiccant cartridge for insertion into a laboratory desiccator having a bowl with a side wall, a concave bottom wall, a plurality of spaced projections within the side wall located proximate the concave bottom wall, a shelf supported on the projections,... | 06/12/1984 |
| 4439219 | Filter assembly having filter retainer apparatus A filter assembly comprising a filter retainer apparatus, an air filter frame and having a removable pleated filter media. The pleated filter element is secured within the frame by the retainer apparatus which comprises an expandible retainer having elong... | 03/27/1984 |
| 4420315 | Nesting air filters This invention provides an improved construction for air filters wherein the filter frame is provided with indentations or recesses adjacent to its opposite corners which allow a plurality of filters to nest together in a laterally offset relationship to ... | 12/13/1983 |
| 4416674 | Filter for treating a particle-carrying gaseous stream Filter for treating a gas such as the exhaust gas stream from a diesel engine, which exhaust gas often conveys carbon particles into the atmosphere. The treating filter comprises a casing holding a plurality of serially arranged filter beds. The latter ar... | 11/22/1983 |
| 4387671 | Air filter for a cooling system overflow container An air filter is described which is used in conjunction with an overflow receptacle or container of an engine cooling system. The container is in fluid communication with the engine cooling system so that coolant may flow from the cooling system to the co... | 06/14/1983 |
| 4386948 | Filter drive A filter device used to filter medical anesthesia gases and other inhalable respiratory gases. The filter device has a ported housing, and a filter member within the housing. The filter member is a porous sheet that is transversely pleated and draped to d... | 06/07/1983 |
| 4382808 | Assembly for holding a filter An improved assembly for holding a filter element so as to define a filter assembly for removing particulate matter from a sample gas stream. First and second housing sections mount and enclose a replaceable filter element. An annular wall extending betwe... | 05/10/1983 |
| 4380353 | Dust control system and method of operation A dust control system for a mining machine, particularly for controlling respirable dust in coal mining operations, comprising a ductwork system having intakes adjacent the cutter head of the mining machine, a fan for drawing air through the ductwork syst... | 04/19/1983 |
| 4372763 | Air filter assembly An air filter assembly is provided which comprises a compressible air pervious multi-sided filter panel and a frame therefor, the latter being adjustable from a collapsed first mode to an operative second mode. The frame of foldable sheet material include... | 02/08/1983 |
| 4363643 | Support means for filter material in a non-electric air cleaner A filter assembly in an air cleaner includes a lower wire-form adapted to receive two opposite ends of a pliable filter material. Spaced wires on the lower wire-form enable manual forming of pleats in the filter material and define the tops of such pleats... | 12/14/1982 |
| 4343632 | Gas dust-removing filters A gas dust-removing or dedusting filter of the kind incorporating a filter casing, filter tubes or bags having a flattened oval cross-section, and internal spacing elements. The casing includes a vertical partition having perforations and dividing the cas... | 08/10/1982 |
| 4340402 | Disposable air filter A dual filter system for heaters and airconditioners comprising releaseably securable throwaway secondary filter secured to a disposeable or permanent primary filter.... | 07/20/1982 |
| 4334899 | Snap filter grill and assembly A filter assembly for use especially with air conditioning and heating ducts, comprising first and second rectangular frames, the latter frame being detachably positioned in the first one, and a filter element sandwiched between the rear end of the second... | 06/15/1982 |
| 4331460 | Mist collector for separating drops of liquid from streams of gas for vapor In a mist collector for separating drops of liquid from a gas or vapor stream and including a cylindrical housing and metal fiber webs mounted in an annular configuration in the housing and arranged to be penetrated by the stream in the radial direction o... | 05/25/1982 |
| 4319898 | Louver grease filter A filter for removing airborne grease has spaced front and rear walls each with a series of transverse louvers extending into the interior of the filter and opening downwardly. A filter media of expanded metal sheets is sandwiched between the front and re... | 03/16/1982 |
| 4292060 | Air-filter assembly An air-filter assembly having a filter cap and a filter case, both being made of elastic material such as synthetic rubber and which are formed integrally with each other. The air filter assembly is provided at an air inlet pipe portion of a valve for use... | 09/29/1981 |
| 4292061 | Air cleaner for fuel injected engines An air filter assembly for a fuel-injected engine of the rectangular air inlet type typical of some imported automobiles is secured directly to the filter seat flange of the air intake opening of the engine, without a separate housing or canister. The fil... | 09/29/1981 |
| 4279630 | Air cleaning means for internal combustion engine Air cleaning means suitable for use with an internal combustion engine including a fuel vapor adsorbing filter element and a sucked air cleaning filter element arranged independently of and separately from each other. The fuel vapor adsorbing filter eleme... | 07/21/1981 |
| 4259099 | Gas filter device A gas filter device, adapted to be installed between an exhaust emission control device and an intake manifold of an internal combustion engine for filtration of the intake manifold gases which pass to the control device upon variations in vacuum, is comp... | 03/31/1981 |
| 4255173 | Lead filter for internal combustion engine exhaust gases An automobile type exhaust gas lead filter is particularly applicable to diesel engine smoke reduction. It has a tubular housing with alumina coated metal wire fibers as the filter bed, which is centrally located. There are open spaces forming plenums at ... | 03/10/1981 |
| 4233040 | Self-cleaning rotary filter for the cooling air inlet of an engine enclosure The engine of a self-propelled combine is mounted in an enclosure having an inlet through which cooling air is drawn by an engine-driven fan. The air is filtered by a rotating disk-like screen mounted over the air inlet before passing through a radiator a... | 11/11/1980 |
| 4226723 | Filtration apparatus Filtration apparatus in which the filter medium is mounted at a slope with respect to the horizontal and in which there are means to vibrate the medium in a horizontal direction to assist the cleaning of the medium. A single chamber may contain many sheet... | 10/07/1980 |
| 4217121 | Filter module with independent securing means for an outlet grille, and for a filter element behind the grille A filter module has a housing providing a receptacle for a standard filter element, and also has a lateral extension for accommodating securing means to hold the filter element in place. The lateral extension defines a grille opening for removeably receiv... | 08/12/1980 |
| 4211543 | Air cleaner with replaceable filter element An improved filter element assembly for use in an air cleaner on an internal combustion engine comprises a perforated liner. A replaceable filter element comprising a pleated filter medium is releasably coupled to the liner. A safety sleeve assembly is in... | 07/08/1980 |
| 4198726 | Traveling pneumatic cleaner filter An improvement in a traveling pneumatic cleaner for vacuum collection of fiber waste from a textile mill room in the form of a filter disposed in a receptacle for separating fiber waste from an air current passing through the receptacle. The filter define... | 04/22/1980 |
| 4177049 | Compressed gas filter A filter assembly to remove impurities from a pressurized fluid stream comprises: (a) a longitudinally elongated barrel, first and second end structures at opposite ends of the barrel, said structures including end caps, and elongated tie members spaced a... | 12/04/1979 |
| 4174205 | Furnace air filter An improved apparatus for filtering an air flow which is warmed or cooled and used for heating or cooling purposes, comprises a filter frame defining a filter area and a filter medium supply source located in proximity to the frame, wherein the frame and ... | 11/13/1979 |
| 4138234 | Holder for annular filter Holder for an annular filter includes a support frame or basket with a flared portion at its upper end which cooperates with the inner leg of an inverted U-shaped sealing ring to clamp the upper end of the filter. The sealing ring has its outer leg seated... | 02/06/1979 |
| 4133661 | Air filter assembly The drawings illustrate an air filter assembly which is assembled from a pair of identical box-like housing halves. Equally spaced rib elements are formed in each half such that, upon assembly, the rib elements are interdigitated to provide a space for co... | 01/09/1979 |
| 4129430 | Filter assembly A filter assembly which includes spaced first stage resin bound fibrous filter members with a second stage fine filter member spaced between the first stage members to form plenum chambers on opposite sides of the second stage member with the first stage ... | 12/12/1978 |
| 4115082 | Air cleaner assembly An air cleaner assembly of the flow through type has a central element of open cell foam rubber, such as foam polyurethane, two series of rigid thermoplastic rods sandwiching the central element, the rods being capable of developing and holding a positive... | 09/19/1978 |
| 4105423 | Compact air filter with tubular frame A compact nestable air filter of generally rectangular form comprising a frame formed of an integral suitable cut and scored blank of paperboard, which, when assembled, comprises planar frame members engaging a substantially sheet-form filter element ther... | 08/08/1978 |
| 4099944 | Filters A filter suitable for filtering gases comprising a resilient foamed synthetic plastics filter element having a perforate support extending thereacross, and a peripheral resilient foamed synthetic plastics sealing frame, the edges of the element being loca... | 07/11/1978 |
| 4086071 | Air filter assembly An air filter assembly is provided which comprises a multisided air filter panel and a multisided supporting frame therefor. The frame is of unitary construction and includes a foraminous center section, and a marginal section delimiting the center sectio... | 04/25/1978 |
| 4074985 | Air filter A readily disassembled filter assembly for a carburetor air intake housing, which assembly has upper and lower plastic, metal or rubber mounting rings with annular seating grooves on the interior sides, and such seating grooves snugly but removably receiv... | 02/21/1978 |
| 4073632 | Filter bag assembly An improved filter bag mounting assembly for fabric type dust collectors compositely constituted of a selectively shaped mounting and filter media supporting member adapted for removable insertion in a complementally sized receiving aperture in a tube she... | 02/14/1978 |
| 4062781 | Disposable filter with interchangeable end elements A disposable filter unit which comprises a self-gasketing, self-supporting, bonded, glass-fiber filter tube sealed in a housing with two similar plastic molded end units, with one peripheral edge of the tube compressed against the interior face surface of... | 12/13/1977 |
| 4058379 | Filtering apparatus A method and apparatus for filtering solids from a gas stream is disclosed wherein the flow of the gas stream through a filter medium is stopped after a filter cake has built up consisting of the solid particles having been filtered out of the gas stream,... | 11/15/1977 |
| 4015751 | Quick change fluidizing outlet assembly A fluidizing assembly is provided having a readily removable and replaceable filter assembly. The filter assembly comprises a supporting grid member, a filter member and an open frame member upon which may be mounted a seal member. The fluidizing outlet a... | 04/05/1977 |
