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4853118 |
Liquid filter
A liquid filter for an internal combustion engine includes a filter cartridge housed within an outer shell closed by an end member. The end member provides a central outlet opening and...
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4846218 |
Check valve for liquid chromatography pumps
A check valve with a disposable filter is provided for regulating the flow of a mobilizing liquid in a pump of a liquid chromatograph. The valve assembly includes two seated ball valve...
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4846787 |
Apparatus for preventing back-flow of fluid in a blood filtering system
A blood filtering system includes a check valve for preventing fluid back-flow, coupled between a peristaltic pump and a pressure equalizer, the valve including a tubular container having an inlet...
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4844798 |
Time delay control and system embodying same
A fluid-operated, time delay control and system embodying same are set forth. The time delay control includes an accumulator chamber communicating with a source of fluid under negative pressure or...
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4834873 |
Combined reverse osmosis unit and water inflow control valve for a water purification system
An improved reverse osmosis unit is provided for use in a water purification system, wherein the reverse osmosis unit includes an integral control valve for regulating water inflow in response to...
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4834177 |
Unidirectional filter for hydraulic systems
A hydraulic system has a filter that filters only when the fluid is flowing in one direction. The filter is located in a flow passage between a hydraulic fluid source and a valve in a well. The...
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4810376 |
Medical bag arrangement
Medical bag arrangement (10, 70) comprising a first bag chamber (12, 72) and a second bag chamber (14, 74), the first bag chamber (12, 72) being filled with a flushing liquid. From the first bag...
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4808302 |
Water purifier valve
The present invention comprises improvements in the design of a control valve for a reverse osmosis water purifier system that prevents the unstable oscillations and waste water leakage exhibited...
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4804465 |
Water treatment apparatus
A water treatment system including a pair of tank assemblies 110, 112 interconnected by a valve module 114 for controlling the communication of water to be treated to an on-line tank and the...
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4801376 |
Cleaner for swimming pools and the like
A cleaner has in a tank a vacuum pump protected by a float valve above the maximum possible water level and a submersible pump at the bottom and both of these in the tank produce a vacuum for the...
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4789467 |
Automated disinfection system
An automated disinfection system for a hemodialysis machine having a proportioning pump includes a manifold block having a check valve for connection to a container of disinfection solution. The...
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4780197 |
Chlorination module for cartridge filter unit
A filter and chemical dispenser combination for filtering and chemically treating water to be added to a body of water includes a liquid inlet, a liquid outlet, and a flow passage between the inlet...
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4773991 |
Water purification system fluid path
A water purification system includes a water purifying module having an inlet, a first outlet for purified product water and a second outlet for untreated concentrate water. An inlet line is...
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4773993 |
Apparatus for purifying and dispensing water with stagnation preventing means
An apparatus for producing pure water from raw water, comprises a reverse osmotic membrane unit, a polisher, an ultraviolet sterilizer, a high pressure pump for forcing raw water to flow through a...
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4765888 |
Artificial kidney with integrated dialysate circuit
An artificial kidney comprising a haemodialyser 16 connected to a dialysis liquid circuit. The latter can be entirely integrated, that is to say that the functions previously performed by a...
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4761225 |
Apparatus for controlling the removal of liquid hydrocarbons from groundwater
An apparatus for controlling the removal of liquid hydrocarbons from ground water in perforated well casings consists of a plurality of pump chambers and a control system which is powered by...
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4759474 |
Beverage dispensing system and filter cartridge therefor
An improved fluid dispensing system for use in dispensing beverages including unitary fluid filter cartridge adapted to be immersed in fluid to be dispensed, the fluid filter cartridge including a...
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4755289 |
Lubricant filter for internal combustion engines
Lubricant filter for internal combustion engines, particularly for motor vehicles, of the screwed-on type, both for full flow and bypass filtering, the latter being obtained by superimposed filter...
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4746423 |
In-well pump skimmer
A two pump skimmer system for recovery of lighter-than-water hydrocarbons from water wells. A water pump is used to depress the water table and a contaminant pump is used to remove the...
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4743368 |
Swimming pool skimming and vacuuming system
A swimming pool skimming and vacuuming system includes a passage plate for insertion in the passage interconnecting a pool filter to a pool. The passage plate has a skimmer weir positioned therein...
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4734202 |
Method and apparatus for conditioning water
A method for conditioning water includes the steps of subjecting the water to a magnetic field treatment by causing it to flow through at least one magnetic field; and subjecting the water, in...
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4715952 |
Reverse osmosis water purification element and cartridge
A reverse osmosis element consists of a long tubular plastic base having a plurality of elongate parallel channels in its exterior surface. A monofilament strand is wrapped or extruded helically...
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4711716 |
Decanting apparatus
A decanting apparatus for a wastewater treatment reactor includes a clarified fluid receiver having fluid receiving ports therein, support structure for maintaining the fluid receiver at a desired...
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4684465 |
Supercritical fluid chromatograph with pneumatically controlled pump
An apparatus for analyzing a process stream (1) via supercritical fluid chromatography including container means (10), extraction means (50) for drawing a sample volume from the process stream and...
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4683055 |
Filter for diesel fuel
A diesel fuel filter, which is arranged in a conduit between a fuel tank and a fuel injection pump, comprises a housing accommodating a filter element and a cover non-releasably connected to the...
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4657040 |
Bypass reverse flow valve
A filter assembly including a housing and a filter element which includes a bypass/reverse flow valve coaxially disposed within the housing with the filter element and includes a central opening...
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4650573 |
Ozone generator water treatment
An ozone generator has a central metal bristle brush electrode with a metal cylindrical electrode separated from it by a Pyrex cylinder. The electrodes are contained in a sealed cylinder having an...
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4650458 |
Apparatus for the measurement of fluid flow
Apparatus is disclosed for the measurement and replacement of physiological fluids including a meter for measuring the amount of a physiological fluid flowing through the meter, a first conduit for...
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4615800 |
Duplex filter apparatus
The present invention is directed to a duplex filter apparatus which provides for a first primary filter path and a second path for secondary filtration. The first path includes a shutoff valve on...
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4612947 |
Apparatus for removing soil from the wash and rinse waters of an automatic dishwasher
A food soil separation apparatus for cleaning the wash and rinse waters of an automatic dishwasher. The apparatus comprises a reversible motor and a lower pump housing with a lower impeller...
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4606826 |
Apparatus for controlling ultrafiltration and method for the same
An apparatus for controlling ultrafiltration in a dialysis system for artificial kidney including a dialyzer, a blood supply line for supplying a blood to the dialyzer, a blood discharge line for...
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4604196 |
Marine separator for fluids of different densities
A cylindrical horizontally extended vessel which receives a mixture of fluids of different densities. The separation of the fluids is provided a minimum of disturbance by the marine motions to...
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4602996 |
Aquarium filter assembly
An aquarium filter having a housing unit which is adapted to be mounted onto a wall of an aquarium tank. The housing includes an inlet chamber for receiving contaminated water from the aquarium...
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4596656 |
Hydrotherapy water return fitting for tubs and spas
A hydrotherapy return fitting is described composed of a fitting body with a waterflow passge through it that is connected to a water circulation pump. The return fitting is suitably held within an...
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4595474 |
Electroplating solution recovery system
An electroplating solution recovery system is disclosed which includes an electroplating tank containing an electroplating solution and one or more rinse tanks containing rinse solutions. A tubular...
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4591434 |
Advanced dual filtering apparatus
A dual filtering apparatus for filtering deep fat frying vat oil includes a remote filtering screen attached to a tub by a flexible conduit for conveying oil and includes a fine filtering assembly...
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RE32144 |
Reverse osmosis method and apparatus
Reverse osmosis, particularly for water desalination, is achieved using semipermeable membranes which selectively permeate purified water from a feed solution pressurized by reciprocating piston or...
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4582610 |
Well water aeration system
A well water aeration system removes volatile contaminants from well water pumped through the well pipe of a well into a building. An elongate spray conduit is spliced into the well pipe at a...
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4579653 |
Side-by-side fuel processor apparatus
A fuel processor device particularly useful for separating water and other impurities from diesel fuel. The fuel processor according to the invention features a vertically elongated housing where...
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4574972 |
Protective cap for diesel fuel filter
A protective cap for a diesel fuel filter which is placed on the working end of the filter by the filter manufacturer prior to sale to prevent dirt and other contaminants from getting into filter,...
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4574048 |
Vacuum filter system for swimming pools
A vacuum filter system for swimming pools, which includes a filter tank carrying a plurality of replaceable filter cartridges, the filter tank being in the suction line from the pool, which tank...
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4571302 |
Relieving pressure differential in vacuum filter
A filter system and method are provided utilizing a filter tank separated into an inlet compartment and a filtrate compartment by a filter media. Under normal filter operation, the liquid to be...
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4545905 |
Filter backwash water saver and water filter to clean swimming pool filter
Filter backwash water saver and water filter to clean swimming pool filters which takes backwashed water from a filter which is usually discharged to the environment and instead filters the...
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4529512 |
Hydraulic reservoir
A hydraulic system including a closed reservoir which is pressurized at a varying pressure that is responsive to a variable condition of the system. The system minimizes the air contained in the...
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4522713 |
Apparatus for static membrane filtration
In a filtration apparatus for fluids and liquids having an external vessel, in particular a centrifuge tube and a filter unit disposed in the liquid, the medium to be filtered is under excess...
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4512884 |
Fuel treatment device
A fuel treatment device for use in fuel system of an internal combustion engine comprises a casing adapted to be secured, in use, to a mounting which defines a fuel inlet and an outlet. A fuel...
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4502954 |
Combination fuel filter and water separator
A combination fuel filter and water separator which is particularly useful at the upstream, suction side of a fuel pump includes efficient provision for initial settling of water and particulate...
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4501665 |
Self-contained sewage treatment system and method
A self-contained sewage treatment system and method includes a first waterless treating tank operable to separate feculent solids from raw sewage influent in a suspended bio-mass for effective...
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4500425 |
Pump valve for liquid separator
A separating device for removing water from a fuel oil/water mixture includes a cartridge comprising a filtering media and a sump. The cartridge is installed on a mounting head, which includes a...
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4497749 |
Check valve for ammonia injector apparatus
Apparatus for injecting ammonia into water, or more particularly, into hard water. Apparatus includes a check valve having a plurality of spaced recessed annuli therearound communicating with an...
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