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| Number | Title | Issue Date |
| 4093548 | Liquid filter apparatus A piston assembly is disposed between the inlet zone and the filter medium of an apparatus to forcibly compact the filter medium with the same liquid which is being filtered by the liquid filter apparatus thereby to inhibit channeling of the liquid throug... | 06/06/1978 |
| 4082673 | Filter asembly with integral service shut-off valve The filter assembly employs a closure portion having fluid inlet and outlet ports integral therewith enabling in-line use of the assembly. Associated with such closure is a spring biased valve handle, whereby rotation of the handle along a prescribed cour... | 04/04/1978 |
| 4080294 | Filtration system A filtration system is provided that directs a fluid to be filtered through a disposable tubular filtration element, supports the filtration element, and accommodates for "wet growth" of the filtration element. The system operates with an inside-to-outsid... | 03/21/1978 |
| 4054523 | Cardiotomy reservoir with integral filter A reservoir for holding and reprocessing foamy shed blood prior to reintroduction to a patient, the reservoir comprising a holding chamber divided by a filter into two sub-chambers, a foam killing chamber in open communication with one of the sub-chambers... | 10/18/1977 |
| 4039305 | Apparatus for removing gas from a liquid system Apparatus is connected in the liquid system for separating gas from the liquid, for example. The gas laden oil is directed into a filter positioned within a housing. The filter is of a material sufficient for separating gas bubbles from the oil while pass... | 08/02/1977 |
| 4038194 | Blood filter unit A blood filter unit comprising an assembly for supporting a filter cartridge, a filter cartridge, and a housing for the assembly and cartridge. The assembly for supporting the cartridge comprises a permeable cylindrical core with a bottom member and a top... | 07/26/1977 |
| 4031891 | Air eliminating filter An air eliminating filter for use in filtering intravenous or other liquids including an elongate hollow tubular member provided with inlet means at one end and having at least two window openings spaced longitudinally thereon, a hydrophilic filter elemen... | 06/28/1977 |
| 4013072 | Drip chamber for intravenous administration A drip chamber for use in the intravenous administration of liquids formed of a generally vertically disposed, hollow chamber provided with inlet means and outlet means, with the chamber being adapted to maintain a liquid level of the intravenous liquid t... | 03/22/1977 |
| 4006084 | Oil reclaiming device A device for use with an internal combustion engine for reconditioning oil by removal of solid and liquid contaminants including a housing having an oil inlet at one end and an oil outlet at an opposite end and containing a filter for removal of solid mat... | 02/01/1977 |
| 4001117 | Sieve filtration apparatus An apparatus for sieve filtration, and in particular ultrafiltration using a membrane as the filter, is particularly useful for filtering extremely small initial volumes, in particular of blood plasma or serum, in a pressurized cell with alternating flow ... | 01/04/1977 |
| 3993461 | Cardiotomy reservoir A reservoir for the collection, purification, and storage of blood during surgical procedures which comprises a hollow blood storage casing having a hollow, perforated member within said casing extending from end-to-end thereof. Blood defoaming means and ... | 11/23/1976 |
| 3984327 | Filters A filter, especially for swimming pools, comprises a group of superposed filter beds operating in parallel within a single outer casing. By this means, the capacity of the filter for the floor area used is greatly increased, and also the strength requirem... | 10/05/1976 |
| 3979292 | Duplex filter system A duplex filter system having two filterized fluid flow circuits for maintaining continuous fluid flow to an engine or similar liquid utilizing device during a filter change operation. A fluid control system is provided including liquid-obstructing air ve... | 09/07/1976 |
| 3971720 | Method of and apparatus for processing cattle excrement A method of and apparatus for separating from ruminant animal feces the undigested fibrous material that is preponderantly short pieces which consist of bundles of capillary tubes. The feces are mixed with urine, water from animal washing and preparation ... | 07/27/1976 |
| 3958963 | Filter for liquids capable of containing a gas A filter for liquids capable of containing a gas including a chamber for through-passage of a gas-charged liquid and which is subdivided into an upstream compartment and a downstream compartment by a filtering element, preferably in the form of a cylindri... | 05/25/1976 |
| 3954623 | Blood filtration unit A blood filtration unit for filtering multiple units of blood comprising means for attaching the unit to a blood reservoir, a drip chamber and a segmental filtration compartment for filtering blood.... | 05/04/1976 |
| 3939078 | Extracorporeal filter An extracorporeal filter having improved characteristics for the positive elimination of gas bubbles from blood streams. The top of the filter housing is sloped to a high point where there is positioned an air vent. The inlet for the blood is positioned s... | 02/17/1976 |
| 3935106 | Water filter assembly A low cost water filter apparatus including a valve rotor rotatable within a valve housing which rotor may be rotated within the valve housing when necessary for the purpose of engaging a bypass safety feature, or for the purpose of shutting off the flow ... | 01/27/1976 |
