Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 4806217 | Back-flushable filter and pressure-regulator particularly useful therewith A filter device comprises a central tube, a housing enclosing the central tube and defining an internal chamber therewith, and a filter body within the internal chamber. The central tube includes a plug between the inlet and outlet which directs the fluid... | 02/21/1989 |
| 4806258 | Straining and stop valve A fluid filtering stop valve having a body with a cylindrical chamber having a circumferential sidewall with inlet, outlet and flush ports, and a cylindrical plug member rotatably disposed in the chamber. The plug member has spaced apart first and second ... | 02/21/1989 |
| 4769136 | Filter unit with linked valve actuators A filter assembly includes at least one filter unit, a plurality of conduits extending transversely past the filter unit, a plurality of valves actuable to connect the filter unit to the conduits for alternate forward and reverse fluid flow through the fi... | 09/06/1988 |
| 4759846 | Backwashable filter A backwashable filter comprises (a) an outer case, (b) a rotatable, permeable filter drum, (c) a fibrous filter element supported on the surface of the drum, (d) one or more stationary backwash arms, (e) a feed inlet leading to one side of the filter drum... | 07/26/1988 |
| 4734188 | Filter for hot melt adhesive A filter for hot melt adhesive is carried within a passageway in a manifold and is rotatable therein between a filtering position in which hot melt adhesive is directed to the inner core of the filter at one end thereof, and a backflushing position in whi... | 03/29/1988 |
| 4714552 | In-line fluid filtering devices and disc-filters useful in such devices A filter device is disclosed, comprising two compartments within a housing. The first compartment includes a filter element, of the screen or the disc types, with communication to the filtered fluid outlet of the housing. A controllable valve communicates... | 12/22/1987 |
| 4707258 | Disk filter A filter comprising a housing including an inlet coupled to a fluid inlet and an outlet coupled to a fluid outlet, and a filter assembly disposed inside the housing and arranged to intercept the flow of fluid from the fluid inlet to the fluid outlet, the ... | 11/17/1987 |
| 4704202 | Water filtering system A water filtering system for connection to at least one water supply to be filtered including a filter tank containing cartridge-type filter media with the tank being especially configured to provide an evenly distributed water flow through the filter med... | 11/03/1987 |
| 4702845 | Rotary drum filter The present invention provides a rotary drum filter wherein one or preferably two rotary drum filters are submerged in a tank of liquid to be filtered. Each rotary drum filter is comprised of a generally cylindrical tank having a perforated outer wall pla... | 10/27/1987 |
| 4689145 | Dry well filtration system A filtration system is provided for a dry well in the form of a buffer tank made of concrete to remove sediment and pollutants from water supplied from a header to an inlet pipe in the tank, so that the water exiting from an outlet pipe is free of particu... | 08/25/1987 |
| 4678564 | Cast filter and automatic self-cleaning backflush control system therefor A filter unit includes: (a) structure providing a porous barrier between a first zone from which liquid to be filtered is supplied, and a second zone to which filtered liquid flows, via the barrier, (b) the barrier including a series of elements defining groov... | 07/07/1987 |
| 4642188 | Backwash apparatus for multi element filter unit A multi-element filter unit includes backwash apparatus and comprises a filter casing with provision for alternative, oppositely directed process liquid and backwash liquid flows therethrough. A plurality of filter tubes are close spaced within the filter... | 02/10/1987 |
| 4639315 | Apparatus for mechanical purification of waste water Apparatus for mechanical purification of waste water has a stationary hollow shaft which is installed in a vessel for waste water and carries a variable number of hollow drum-shaped frames with pairs of filters adjacent to the openings in their sidewalls.... | 01/27/1987 |
| 4632757 | Filters cleanable by reverse flushing A filter capable of being cleaned by reverse flushing, comprises a housing including a fluid inlet, a fluid outlet, a flushing outlet, and a filter body disposed within the housing. The housing includes blocking members disposed on opposite faces of the f... | 12/30/1986 |
| 4622145 | Drum filter A drum filter is disclosed mounted vertically within a tank which receives the liquid to be filtered. The drum is provided with inside and outside filter media layers and intermediate axially extending passages receiving filtered liquid flow, which is col... | 11/11/1986 |
| 4612117 | Liquid filter A vertically arranged filter drum (6) is installed in the feed chamber (2) of the cylindrical housing (1) of the filter, this drum having a closed upper end and an open lower end. The filter drum (6) consists of an outer (13) and an inner (14) supporting ... | 09/16/1986 |
| 4581135 | Self-cleaning fluid filter with a drain A self-cleaning renewable fluid filter that flushes a permanent filter media while the used oil is pumped out by the engine oil pump through a drain in the housing. The fluid filter has an inlet and a drain, a center core with an outlet, a drain valve nor... | 04/08/1986 |
| 4565631 | Backflow-type self-cleaning filter A self-cleaning filter installed in a cylindrical conduit for a liquid to be cleaned, such as cooling water for an industrial power plant, comprises a sieve spanning the conduit and undulating between an upstream and a downstream transverse plane. The int... | 01/21/1986 |
| 4508138 | Polyjet valve with backwash A polyjet valve has an inlet opening into an inlet chamber normally communicating through a movable polyjet sleeve in variable amounts and in one direction with an outlet chamber having an outlet. There is a block to close the outlet and a conduit to esta... | 04/02/1985 |
| 4477343 | Filter backwash means An inlet pipe having two branch pipes and an outlet pipe having two branch pipes, between the inlet and outlet pipes of each branch, there being a dump valve and a dump control valve, each outlet branch pipe containing in it a filter, the dump control val... | 10/16/1984 |
| 4476016 | Heart attack screening method, apparatus and kit for same The invention consists of improved apparatus and a kit packaged improved apparatus and methods for use of such apparatus such kits especially adapted for isolating and identifying and quantitatively measuring the MB iso-enzyme of creatine phosphokinase in... | 10/09/1984 |
| 4462916 | Multi-element filter with rotary backwash arm The apparatus comprises an enclosure divided into two compartments (13 and 14) by a partition wall (15) which has a circular row of apertures (16). Filtering elements (26) of hollow tubular shape are fixed in one (13) of the compartments by an open end on... | 07/31/1984 |
| 4442002 | Filtration devices A rotary filter for polymers comprises an inward flow filter drum mounted in a housing and consisting of inner and outer filter barrels 7 and 6 which retain between them a cylindrical filter element 8 of wire gauze or porous sintered metal. The outer barr... | 04/10/1984 |
| 4431541 | Circular filter device A circular filter having separated inlet and outlet compartments such that cheese whey or the like is pumped into the vessel, is forced across a filter screen, and the filtered whey is discharged downstream for further processing. This invention incorpora... | 02/14/1984 |
| 4430220 | Apparatus for controlling fluid medium flow A device for selective channeling flow of either one or two fluids to at least one flowthrough element, particularly for the flushing out of a filter having at least one hollow cylindrical filter element in a housing which has two connection holes for the... | 02/07/1984 |
| 4351727 | Device for removing foreign particles from a source of fluid A device for removing foreign particles from a source of fluid under pressure which is adaptable to be connected to a faucet or the like. It comprises one or more screens which are provided to collect the foreign particles which might include small stones... | 09/28/1982 |
| 4243533 | Filters with filtrate chamber overflow partitions having plural outlets Periodically operating pressure filter for the concentration of a solid matter suspension, comprising a filtering tank with an input conduit for introducing the suspension to be filtered under pressure, and a drain conduit for removal of the concentrated ... | 01/06/1981 |
| 4210538 | Filter back-washing Apparatus for removing suspended solids from electroplating solutions and the like includes a housed cluster of slotted plastic tubes about which are fitted fabric filter sleeves and through which the solution is normally forced into the tubes continuousl... | 07/01/1980 |
| 4194975 | Backwash system for swimming pool A backwash system for a swimming pool including a pool discharge line and a return line and a filter, characterized by a forward pump in fluid communication between the pool discharge line and the filter and a reverse pump in the return line, and a strain... | 03/25/1980 |
| 4169792 | Water intake device A water intake device comprising a substantially cylindrical rotatable screen adapted to be at least partially submerged in a body of water, means for rotating said screen, a water supply conduit communicating with the interior of said screen to receive w... | 10/02/1979 |
| 4153552 | Method for regenerating filters Method and apparatus for regenerating a diatomaceous earth filter cake of a pressurized liquid filter system by liquidizing the diatomaceous earth filter cake formed on filter elements in the filter chamber of the system; by uniformly mixing with the liqu... | 05/08/1979 |
| 4123356 | Filter cleaning method and filter system A cleaning method of an etched disc filter and the system therefor, in which a plurality of discs having grooved surfaces are assembled or piled one on top of another. This filter is used for removing cruds and the like in a nuclear plant. For separating ... | 10/31/1978 |
