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5374351 |
Filter backflushing system
A filter backflushing system including either a pneumatically-driven piston or pneumatic accumulator for propelling a supply of a filtered backflushing fluid, contained in a backflushing fluid...
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5372710 |
System for producing reduced pressure on board of an aircraft
A system for producing reduced pressure on board of an aircraft cooperates with at least one vacuum toilet for flushing the toilet. A reduced pressure is generated by a pump for transporting of...
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5362385 |
Portable water filtering device
A personal, portable water filtering device is provided for use in filtering water taken from public drinking fountains, public wash basins or other public water sources. The preferred device...
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5362390 |
Shut-off valve for spin-on filters
A shut-off valve for a spin-on filter includes a generally cylindrical outer housing which has an open top surface and an annular spring channel formed in that top surface for receipt of a coil...
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5352356 |
Stovepipe decanter apparatus
A modular decanting apparatus that is self supporting that may be used in single or multiple configurations to accommodate the removal of wastewater effluent from a wide range of geometric...
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5350506 |
Anti-drain fluid filter
A fluid filter, particularly adapted for use in non-vertical header mount arrangements, has an inlet thereinto and an outlet therefrom, both of which are valved to create a closed filter shell upon...
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5344558 |
Water filter cartridge
A self-contained, disposable water filter cartridge for a water treatment system for treatment of potable water has one-way ball check valves at the water inlet and water outlet to the cartridge....
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5334315 |
Priming system
Processes and systems and methods for priming a fluid processing apparatus and for treating a fluid are disclosed.
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5334309 |
Filter units
A filter unit comprises a housing containing a filter element. The housing includes an inlet for fluid and an inlet passage which passes fluid to the filter element. An outlet passage conveys...
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5318411 |
Compressor with integral filter
The filter of a compressor is located in the casing of the compressor. The fluid path includes passages in the casing such that brazed connections are not required between the filter and the parts...
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5308478 |
Prevention of bacterial growth in water treatment systems
A system and method for the prevention of bacterial growth in portions of a water treatment system which contain water from which bactericide has been removed includes a cross connect between the...
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5284579 |
One-piece anti-drainback and relief valve
A spin-on fluid filter of the type having a hollow, cylindrical filter element enclosed within an outer container and an end plate, is provided with a one-piece, combination anti-drainback and...
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5284582 |
Fast connection joint of fitting outlet
This invention is regarding to a fast connection joint for pipe fitting, particularly for those applications where prevention of water spraying in large quantity is required. Its structural design...
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5281330 |
Water purifier
A water purifying apparatus of compact construction. The water purifying apparatus has a water channel for receiving water via an inflow passage and discharging water via an outflow passage. An...
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5269913 |
Debris trap
A debris trap and in-pool skimmer for use in combination with a swimming pool cleaner having a housing; a housing lid having a conduit with an inlet and an outlet; a filter suspended within the...
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5268093 |
Portable water purification system
A manually operable water purification system which includes (i) a first container having an open end and an outlet orifice, (ii) a filter operably positioned within the first container for...
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5264121 |
Apparatus for purifying fuel
An apparatus for purifying fuel, comprising a closed container having a top, a bottom, an inlet for impure fuel and an outlet for purified fuel placed at a level over the inlet, both coupled near...
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5250176 |
Modular valve assembly for oil filter
A modular compound valve assembly for an automotive oil filter includes a relief valve subassembly and a clean-side anti-drainback valve subassembly sharing a common unitary valve body. In one...
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5248417 |
Double flow-through filtration apparatus
Double flow-through filtration apparatus requiring the bulk of the water to be treated to twice flow through filtering media contained within a filter housing. The housing includes an inlet port...
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5246086 |
Oil change system and method
An internal combustion engine oil change system including an oil filter supplied with a check valve fill fitting. During an oil change, new oil is supplied to the engine through the check valve...
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5242581 |
Shut-off valve
A shut-off valve for use in a filtration system with a filter element having a tubular coupling member at one end arranged so that when the filter is installed in the system the coupling element...
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5240596 |
Aquarium cleaning apparatus
An aquarium cleaning apparatus is described that preferably incorporates a number of features including: (1) a swivel head connected to the siphon hose which rotates as the apparatus is maneuvered...
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5236064 |
Lubricant charging device
A lubricant charging device for use with internal combustion engines. The device includes an adaptor for being interposed between a filter mounting plate on an engine and a spin-on type oil filter....
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5234580 |
Decanting apparatus with float supported submerged pump
A decanting apparatus for a waste water treatment reactor which includes a float system which may be independent of the decanting apparatus end which allows the decanting apparatus to be removed...
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5232582 |
Water purifying apparatus having moss-preventing filter and monitored air injection
A water purifying apparatus has feeding device for feeding water under pressure; a bacteria culturing tank; and air supply device for feeding air to the bacteria culturing tank by inducing air by...
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5217606 |
Double-filtering filter for vehicle engine lubricants, with compressible fine filtering cartridge
An oil filter for providing coarse and fine filtration of lubricating oil in an internal combustion engine is disclosed herein. The oil filter includes a cylindrical housing closed by a cover...
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5213694 |
Water treatment control system for treating cooling tower makeup water
An apparatus and method for controlling the amount and concentration of make-up water and chemicals introduce into the recirculating water of a cooling tower system. A float operated make-up valve...
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5207898 |
Filter head with integral priming pump and valved bypass passage
A head (10) for mounting a replaceable spin-on fuel filter element (12) for use in a vehicle fuel system, includes an inlet (18) and outlet (76). The inlet is connected in the head to a second...
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5195276 |
Apparatus and method for flushing a casting
An apparatus for flushing a workpiece including a passageway having an inlet and an outlet, the apparatus comprising structure adapted to communicate with the inlet and with the outlet for...
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5193988 |
Reverse osmosis system and automatic cycling booster pump therefor
A reverse osmosis system including a reverse osmosis filter with a reverse osmosis membrane and having an inlet port coupled to a source of feed water under predetermined pressure via a feed water...
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5192427 |
Shower filters and accessories
A water filter assembly for use with a shower bath comprises a housing containing a filter and a bypass adapter which allows the filter to be displaced, e.g. downwardly, from the direct line...
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5182015 |
Plastic oil filter assembly
A plastic oil filter assembly comprises a closure plate having a plurality of radial supporting fins disposed on the inside surface thereof, a filter member having a saw-toothed coupling for...
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5178753 |
Oil filter for internal combustion engines
The present invention relates to an oil filter (1) for internal combustion engines, which is preferably used in secondary oil circuit in addition to a conventional oil filter. The oil filter...
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5151250 |
Automatic purge method for ozone generators
A negative pressure flow regulation and automatic purge method which provides an improved ozone delivery system for use with ozone generators using venturi devices or other negative-pressure ozone...
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5147532 |
Domestic grey water purifier using diverter and UV filter treater with preheater
A water purification system for treating grey water from household appliances such as baths, showers, vanity basins and washing machine (11-15) has branch-off pipes (29-33) from the usual drain...
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5141631 |
Polymer filter with backflush pump
A filter for flowing polymer having a filter element progressively advanced between an on-stream position communicating between the upstream and downstream passages and a backflush position. In the...
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5139654 |
Liquid collector pressurizing and filtering means
Apparatus for quickly taking and filtering liquid taken from a body of liquid comprises a bailer for taking and containing a sample of the liquid therein. The bailer has an upper end portion...
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5137644 |
Pipe connection system for multiple water treatment filters
A backwash and ripening pipe connection system for a water treatment plant uses common pipelines to and from respective filters in the plant. The backwash/ripening pipeline to and from each filter...
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5135647 |
Fluid vacuum apparatus and filter bag for cleaning swimming pools and the like
A cylindrical housing mounts a piston therewithin, wherein the piston is reciprocatable relative to the housing, wherein the housing includes a "T" shaped junction, with a first check valve mounted...
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5135645 |
Refrigerator water filter
A water filter system for use in refrigerators having water dispenser and/or icemaker features. The filter system includes a commercially available filter cartridge which removes common water...
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5133858 |
Reverse osmosis water purification apparatus
A reverse osmosis water purification apparatus includes a housing sump, a protective canister disposed within the sump, a filter assembly, an outwater conduit and a manifold disposed within the...
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5130015 |
Liquid purifying attachment having pressurizing piston
A liquid purifying attachment for dispensing a liquid from a container, which includes a cylinder fluid-tightly attached to the container, and a piston fluid-tightly fitted in the cylinder bore...
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5128052 |
Wellbore liquid recovery apparatus and method
An apparatus for recovering liquids from a wellbore includes a primary pump for pumping a primary fluid through a primary fluid conduit positioned in the wellbore, and a secondary,...
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5126041 |
Faucet with removable filter for a water distiller
A faucet assembly with removable filter has a bottom housing portion attached to a source of water. A top housing portion that includes a spout means attaches and detaches from the bottom housing...
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5114573 |
Apparatus for depositing a viscous valve opener material within an engine oil filter
An apparatus for depositing a viscous valve opener material within an engine oil filter is disclosed herein. The engine oil filter includes an anti-drain back valve that is normally closed on a...
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5100542 |
Dispenser of liquid agent for treating a recirculated body of water
Concentrated sanitizing liquid is stored in a main reservoir coupled directly to a measured reservoir by a check valve so that it automatically refills upon being emptied by air under pressure from...
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5098560 |
Apparatus for heating and demoisturizing diesel fuel
A fuel treatment apparatus having a settling chamber with a fuel introducing conduit passing through the top of the chamber and extending to a lower portion of the chamber to define a fuel inlet in...
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5096598 |
Pressurized purging of a liquid drain for a vacuum system
The present invention is directed to an improved purging of a liquid drain system for a liquid separator used in a moisture laden process vacuum system wherein the liquid separated from the flow...
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5092990 |
Filter device
A filter device for cleaning water and having a reinforcing member for preventing reduction of filtering area due to deformation of filter membrane. The filter device comprises a generally...
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5087355 |
Automatically self-flushing filter
An automatically self-flushing filter for use on overhead sprinkler irrigation systems, and the like, is disclosed. The filter includes a hollow cylindrical body (20), a removable screen element...
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