Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 5744030 | Filter assembly with automatic shut-off and quick-connect filter cartridge Embodiments of a fluid filtering assembly are shown and described, each embodiment including a valve head that routes fluid to and from a filter cartridge and that includes a valve system that automatically opens and closes when the filter cartridge is in... | 04/28/1998 |
| 5705067 | Mixing faucet with water purifier A body 1 is constructed by mounting a purifier cartridge 23 in a cold-water passage 7 and is equipped with a purified water handle 16 for opening and closing a branch passage leading from the cold-water passage 7 to the purifier cartridge 23. To this body... | 01/06/1998 |
| 5695168 | Automatic valving unit, and pressure vessel having automatic valving An automatic valving unit for a pressure vessel that holds a cartridge, loose media, and the like for conditioning and/or purifying a fluid, comprises a valve head having a first passageway extending through it and being adapted to be connected to a fluid... | 12/09/1997 |
| 5643446 | Fuel filter and priming pump A fuel filter comprises a head (10, 96) having an inlet (14, 100) and an outlet (16,102). The head has a pumping portion (18, 104) which includes a vertically extending stepped bore (46, 120) having movable bodies (86, 88; 132, 140) therein. The fluid are... | 07/01/1997 |
| 5607582 | Filter system for liquids A filter system for a liquid, which system has a base with an inlet for incoming unfiltered liquid and an outlet for outgoing filtered liquid and a filter subassembly having a filter unit and structure for removably maintaining the filter unit in an opera... | 03/04/1997 |
| 5591332 | Filter assembly with automatic shut-off and quick-connect filter cartridge Embodiments of a fluid filtering assembly are shown and described, each embodiment including a valve head that routes fluid to and from a filter cartridge and that includes a valve system that automatically opens and closes when the filter cartridge is in... | 01/07/1997 |
| 5567310 | Strainer including rotatable closure member for fluid shut off during Filter displacement A strainer includes a filter which is easily detachable without the possibility of fluid leakage. The strainer has a housing defining a bore and is formed with a fluid inlet and outlet, and an end plate formed with a circular hole and cutouts provided alo... | 10/22/1996 |
| 5560824 | Filter device with closing arrangement and key opening connection A filter device has a housing with connections for a fluid and can be secured to a filter pot. The filter has a filter element secured by a holder. A closure prevents the undesired leakage of fluid. The closure has two sealing plates with at least partly ... | 10/01/1996 |
| 5486288 | Mounting head with safety shut-off valve for replaceable filter cartridge A filter assembly adapted for connection between fluid supply and delivery lines to filter fluid flowing therethrough includes a replaceable filter cartridge having at one end concentric entrance and exit passages confined within an axially outwardly proj... | 01/23/1996 |
| 5456830 | Replaceable filter cartridge for actuating safety shut-off valve in mounting head A filter assembly adapted for connection between fluid supply and delivery lines to filter fluid flowing therethrough includes a replaceable filter cartridge having at one end concentric entrance and exit passages confined within an axially outwardly proj... | 10/10/1995 |
| 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 spring. The spring is positioned so as to act on a valve actu... | 11/08/1994 |
| 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 removal of the filter from the header. The outlet valve i... | 09/27/1994 |
| 5336406 | Replaceable filter cartridge and head assembly with safety shut-off valve A filter assembly adapted for connection between fluid supply and delivery lines to filter fluid flowing therethrough includes a replaceable filter cartridge having at one end concentric entrance and exit passages confined within an axially outwardly proj... | 08/09/1994 |
| 5256285 | Filter container with double construction A filter container includes a sheet having a base with a liquid inlet pipe and a liquid exhaust pipe and a cap that is integrally attached to the base. A disposable unit container is housed inside the sheet, and the disposable unit container contains cart... | 10/26/1993 |
| 5132009 | Filter for a fuel system A filter arrangement (26) for a fuel system (10) having a cartridge (92) located in a bore (48) of a housing (42) for sequentially interruption flow communication from the bore (48) to a regulator (14) through an outlet port (44) and to the bore (48) thro... | 07/21/1992 |
| 5020610 | Removable filter fluid flow shutoff apparatus A filter apparatus for a percussion device powered by fluid pressure includes a percussion device housing having a fluid inlet and a fluid outlet. A valve is displaced between an open and a closed position. A filter recess is formed within the housing. A ... | 06/04/1991 |
| 4818397 | Shut-off valve seal A shut-off valve sealing system for a removable cartridge-type filter which includes a body having an inlet to conduct fluid to be filtered therethrough to an inlet of the filter cartridge. The body has an outlet to conduct filtered fluid therethrough fro... | 04/04/1989 |
| 4682993 | Fluid filter system with replaceable filter element An air filter system, with a replaceable cartridge, suitable for use in controlled environment systems such as computer information storage and retrieval devices. The system provides ease of maintenance, while providing a highly sanitized air stream to an... | 07/28/1987 |
| 4575422 | Paper roll filter structure The invention relates to a filter for regenerating oil, especially from combustion engines, with an exchangeable cylindrical filter-cartridge, being of filter-tissue-paper wrapped tightly around a thin-wall-carton-tube. The filter-cartridge-center is supp... | 03/11/1986 |
| 4559136 | Aquarium filtering system The present invention provides an aquarium filtering system having a pump housing and a filter assembly which is detachably secured to the pump housing for cleaning or replacement. The pump housing includes two conduits which register with and telescopica... | 12/17/1985 |
| 4549440 | Fluid sampling valve The invention pertains to a valve particularly suitable for sampling internal combustion engine lubricating oil while under pressure being used within the engine and consists of a valve body placed within a pressurized oil conduit. The body includes an or... | 10/29/1985 |
| 4529514 | Filter assembly with shut off and filter element therefor A filter assembly includes a slidable tubular member which in a first position provides for flow communication from an inlet passage through a filter element to a filter chamber outlet. Upon removal of the filter housing and filter element the tubular mem... | 07/16/1985 |
| 4529515 | Valve A valve whose casing has two coaxial passages and a chamber disposed between the passages and receiving a valving element movable between an open position in which the passages are free to communicate with one another and a closed position in which the pa... | 07/16/1985 |
| 4426284 | Filter condition indicator A filter comprising a filter head, a canister secured to the filter head and a tubular filter within the canister. The filter head has inlet and outlet ports for connecting into a hydraulic conduit. A first passage normally delivers fluid from the inlet p... | 01/17/1984 |
| 4367144 | Fluid strainer or filter The invention relates to strainers or filters, particularly such oil strainers of the type which have removable filter elements held, against spring bias in a casing. As shown in FIG. 1 the strainer comprises a casing 10 with inlet apertures 11 and outlet... | 01/04/1983 |
| 4317725 | Portable artificial kidney with separable parts Artificial kidney apparatus comprising a blood circulation system including a dialyzer and a blood pump interposed in a blood circuit connectable with blood vessels of a patient, the blood circulation section being contained together with a drive motor fo... | 03/02/1982 |
| 4303514 | Filter device The present invention relates to a filtering device for filtering a fluid flowing through the filtering device particularly for use in fluid systems requiring a continuous supply of filtered fluid. When it is necessary to replace or clean removable filter... | 12/01/1981 |
| 4222875 | Filter element shutoff valve A valve for preventing the loss of fluid from a fluid circuit in an engine block when a screw on filter element located at a low point in the circuit is removed includes a bore in the engine block having an inlet passage connected to the bore near a valve... | 09/16/1980 |
| 4189386 | Debris separation and disposal system A system for the removal and disposal of debris from the water intake of power plants or the like is disclosed. The system includes a strainer basket having pivoted, separable sections movable from an abutting position to an open position; the sections ar... | 02/19/1980 |
| 4139468 | Fluid filtering device A fluid filtering device for use with a filter body having a chamber open at one end and a fluid inlet and a fluid outlet port in fluid communication with the chamber. The device comprises a housing formed by molding a plastic cap onto one axial end of a ... | 02/13/1979 |
| 4077876 | Shut-off valve apparatus The invention relates to a shut-off valve assembly for use with a filter carriage where the upper portion of the filter cartridge cooperates with the valve assembly for controlling fluid flowing into and out of the inlet and outlet port of the cartridge o... | 03/07/1978 |
| 4052307 | Universal filter mounting attachment A universal filter mounting attachment for engine oil filters comprises a base having valved apertures therethrough and a threaded member selected for connection to a cooperating threaded member on a particular engine. The base carries a latch which coope... | 10/04/1977 |
