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3628662 |
FILTER ANTIDRAIN VALVE ASSEMBLY
A filter assembly having a one-way valve precluding escape of fluid when the assembly is opened.
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3625363 |
SPIN-ON TYPE FILTERS
A replaceable filter which includes an outer perforated canister and an inner star-shaped, perforated canister around which is woven a plurality of layers of nonwoven relatively open-pored filter...
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3622004 |
RECIRCULATING WASH FLOW FILTER
A cylindrical wash flow fuel filter element is mounted in a housing so as to form a flow recirculation path, a portion of which is parallel to the surface of the filter. Fluid enters an inlet and...
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3618775 |
FILTER ASSEMBLY CHECK AND RELIEF VALVES
A spin-on oil filter comprising a cylindrical casing having a filter element therein with a closure member closing off one end having a central opening therein formed by a threaded nipple for...
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3617551 |
APPARATUS AND PROCESS FOR PURIFYING OIL-CONTAMINATED WATER
Disclosed is a "cartridge-type" apparatus useful for purifying oil-contaminated water. This apparatus includes a flow-through chamber containing polyurethane foam and a pistonlike member which...
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3608724 |
OIL FILTERS WITH FRONT-END BYPASS VALVE
An oil filter incorporating a front-end bypass valve interposed between the baseplate providing the front or bottom closure of the filter shell and a filter element contained therein. Said bypass...
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3595394 |
WATER-DEMINERALIZING APPARATUS WITH A CENTRAL REGENERANT COLLECTING AND DISTRIBUTING DEVICE
In the regeneration of a mixed bed of cation and anion resins which are separated into layers, these being individually regenerated, the effluent regenerant of the anion layer is collected at...
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3591005 |
WATER SOFTENER REGENERATOR VALVE
An automatic control valve for water softening systems employs a housing which contains a valve body and has chambers which are connected selectively by the valve body to effect the sequential...
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3589517 |
FILTER ELEMENT, RELIEF AND CHECK VALVE, ASSEMBLY
An oil filter including a casing having a filter element therein. The casing has a bottom wall with a centrally located egress opening and a plurality of circumferentially spaced entrance openings...
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3586171 |
COMBINATION DUAL-FLOW AND TWO-STAGE FILTER
An oil filter for internal combustion engines has filter elements of two different flow rates arranged in parallel so that in general the high flow rate material acts as a full flow filter and...
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3570672 |
ARTIFICIAL KIDNEY
An artificial kidney is adapted to circulate a patient's blood, outside of his body, through a membrane container. Inside of a fluidtight container, the exterior wall of the membrane is washed with...
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3568838 |
SEWERAGE SYSTEM FOR HOUSES, PARTICULARLY IN RURAL AREAS
A sewerage system for houses comprises a mechanical strainer, preferably of the centrifugal filter type, for immediate and efficient separation of solid and semisolid impurities from the waste...
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3568837 |
DEVICE FOR SEPARATING PARTICULATE MATTER FROM A STREAM OF FLUID
A centrifuging device having particular utility in separating particulate matter from a fluid stream, characterized by a stream jetting orifice and means for directing a stream along a swirling...
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3567022 |
FILTER WITH RELIEF AND CHECK VALVES
Relief valve in a filter, with a seating surface adjacent an opening in the valve seat, and a flexible valve member having a portion fixed and sealed relative to the seat on the side of the opening...
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3567023 |
VALVED FILTER SUPPORT TUBE
In a liquid filter, particularly an internal combustion engine oil filter, a plastics support tube, externally grooved to provide drainage channels, fits within one end of the element and has a...
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3557958 |
ANTI-DRAINBACK VALVE MEANS FOR OIL FILTERS
Antidrainback valve means for automotive engine mounted oil filters comprising a valve element in the form of an annulus of flexible rubberlike material secured along its inner edge to the inner...
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3556299 |
FLUID DISTRIBUTING CONDUIT FOR PROCESSING APPARATUS
A fluid distributing conduit for conveying fluid under pressure to materials confined within a process vessel includes a feed pipe having a series of holes and a cylindrical elongated member...
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3543542 |
SELF-CLEANING FILTER
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3542199 |
REVERSE OSMOSIS WATER PURIFICATION UNIT
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3535236 |
FLOATING COVER
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3529722 |
COMBINED ANTI-DRAIN BACK VALVE AND BY-PASS VALVE
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3515278 |
SEWAGE TREATMENT APPARATUS
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3509998 |
AUTOMATIC REGENERATING APPARATUS FOR WATER SOFTENER
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3502214 |
CHECK VALVE FOR FILTER APPARATUS
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3498910 |
APPARATUS AND PROCESS FOR THE CONTROLLED OSMOTIC SEPARATION OF WATER FROM SEA WATER
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3494464 |
ROTARY WASHER FOR FILTER BEDS
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3493495 |
APPARATUS AND PROCESS FOR THE OSMOTIC SEPARATION OF WATER FROM A SALINE SOLUTION
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3493496 |
PURIFIED WATER SUPPLY APPARATUS AND METHOD
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3490593 |
MULTIPLE VALVED OIL FILTER UNIT
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3487933 |
ACID DISPENSER FOR WATER SOFTENER
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3485371 |
VALVE ASSEMBLY
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3476247 |
WATER CONDITIONER APPARATUS
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3473299 |
INTERNAL-COMBUSTION ENGINE AIR FILTERING APPARATUS
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3473664 |
OIL FILTER UNIT
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3472380 |
BIDIRECTIONAL FILTER DEVICE
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3467256 |
MULTI-DENSITY SCREW-ON THROW AWAY TYPE FILTER
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3466901 |
LAUNDRY APPARATUS
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3465880 |
COMPACT WATER SOFTENER AND BRINE STORAGE TANK
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3460805 |
VALVE HEAD FOR BY-PASS VALVE
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3459305 |
FILTERING APPARATUS
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3455349 |
FLUID FILTERS AND APPARATUS FOR BLEEDING HYDRAULIC SYSTEMS
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3445002 |
FILTER UNIT WITH AUTOMATIC CLEANING AND AUTOMATIC DISCHARGE OF COLLECTED IMPURITIES
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3421628 |
APPARATUS FOR PROCESSING A SOLUTION BY REVERSE OSMOSIS
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3421625 |
APPARATUS FOR REMOVING IRON FROM WATER
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3409135 |
Replaceable filter liquid pump
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3400821 |
Filter check valve
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3397786 |
Dual element filter assembly having plural valves therein
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3395099 |
Method and means for backwashing mineral beds
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3389801 |
Filter and manual fuel pump for carburetor
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3386582 |
Water softener for use with an automatic washing machine
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