In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7390405 | Magnetic device adapted for various engine oil filtering apparatuses A magnetic device adapted for various engine oil filtering apparatuses is proposed in the present invention. It includes an elastic metal plate; multiple holding bases, each of which has at least a containing portion, the holding bases being disposed on the elastic ... | 06/24/2008 |
| 7357225 | Two part oil or fluid drain plug with magnet A two part oil drain plug assembly facilitates the draining of oil or fluid from a sump, and its use prevents the threads of the sump, which may be an automotive oil pan, from becoming stripped or damaged. Further, the device aids in the determination of the physica... | 04/15/2008 |
| 7329342 | Metallic particle trap bypass filter A metallic particle trap bypass filter is disclosed generally comprising a housing, a filter element disposed therein, an inflow chamber, an outflow chamber, a bypass valve connecting these chambers, and a magnet disposed in the outflow chamber. In some embodiments,... | 02/12/2008 |
| 7241246 | Differential assembly with cover gasket having integral magnet An axle assembly for a vehicle includes a housing, a differential assembly rotatably supported within the housing, a differential cover and a gasket assembly positioned between the housing and the differential cover. The gasket assembly includes a body and a magnet ... | 07/10/2007 |
| 7237652 | Apparatus and method for lubricating feed mechanism of forming machine A lubrication apparatus that lubricates mechanism of a molding machine. The lubrication apparatus includes a tank for collecting lubrication oil therein, and a lubrication oil supply route for supplying lubrication oil from the tank. ... | 07/03/2007 |
| 7220359 | Lubrication system A method for reducing the presence of ferritic particles in lubricant employed in the lubrication of rotary shaft bearing of the type that include a first bearing contact surface, a second bearing contact surface and a plurality of rotatable bearing members disposed... | 05/22/2007 |
| 7192520 | Magnetic device for attachment on an exterior wall of a filter canister A magnetic device for attachment on an exterior wall of a canister where the canister is mounted within a liquid flow path. The purpose of the device is to attract ferrous particulate matter flowing within the flow path and cause that ferrous particulate matter to b... | 03/20/2007 |
| 7178426 | Enhanced lubrication system for drive axle assemblies An improved lubrication system for drive axle assemblies is provided that uses a collector in connection with a filter plug to lower the dynamic lubricant level in the drive axle assembly and filter contaminants in the lubricant sump. The collector is affixed to a c... | 02/20/2007 |
| 7029581 | Lubricant particle collector having a connector with a ball locking mechanism A removable particle collector for an apparatus which separates metal particles from lubricating oil. A valve assembly has a bore that provides a passage into the reservoir from outside. A valve element is normally biased against a valve seat to close the bore. A pl... | 04/18/2006 |
| 7021421 | Transparent noise-barrier wall An object of the present invention is to provide a transparent noise-barrier wall which is slow to foul, easy to clean even when fouled, and capable of maintaining these effects over a long period of time. The transparent noise-barrier wall has brookite titanium dio... | 04/04/2006 |
| 7014772 | Fibrous filter assembly and method A magnetic filter system for filtering metallic particles from a fluid is mounted inside a fluid vessel in a mechanical system, and includes a first magnetic layer and a second fibrous layer adjacent to and overlaying the magnetic layer. ... | 03/21/2006 |
| 6938517 | Power transfer unit A power transfer unit includes a non-parallel gear set and a parallel gear set integrally packaged within a housing. The housing includes an extension portion that connects the power transfer unit to a transmission assembly. The extension portion is formed having a ... | 09/06/2005 |
| 6938731 | Drive axle assembly with insert A drive axle assembly is provided which includes a gear housing and differential gear set. An insert is provided which is disposed in a lubricant reservoir of the gear housing. The insert directs lubricant away from the reservoir upon rotation of the differential ge... | 09/06/2005 |
| 6849179 | Internal filter An internal filter that may be installed or removed from the outside of the housing. The internal filter may also cooperate with an inlet passage for a charge pump. ... | 02/01/2005 |
| 6835308 | Magnetic fluid filter A magnetic fluid filter for filtering metallic particles from a fluid flow system. The filter comprises a magnetic array, a central support for the magnetic array, and arm pieces for positioning the effective range of the magnetic array in a fluid flow environment. ... | 12/28/2004 |
| 6729442 | Wheel hub magnetic filter for lubricating fluids A wheel hub magnetic filter fits within a wheel hub mounted for rotation on an end of the axle. The lubricating oil filter is positioned in a lubricating oil path upstream from the wheel hub bearings and is mounted with the wheel hub for rotation. The lubricating oi... | 05/04/2004 |
| 6649049 | Magnetically enhanced oil filter apparatus A magnetically enhanced oil filter apparatus is provided for attachment to a cartridge mounting stem on an engine and includes a cartridge housing which includes an inside housing wall and an outside housing wall. A magnet unit is supported on a portion o... | 11/18/2003 |
| 6649054 | Magnetic filter device In a magnetic filter apparatus in which permanent magnets are arranged to oppose each other with a container therebetween so as to generate a magnetic line of force in a direction substantially orthogonal to the moving direction of the fluid in the interi... | 11/18/2003 |
| 6622825 | Axle driving apparatus A housing cannot be made compact by only securing a space corresponding to a reservoir tank at the upper part of the housing, and the space at the upper part of the housing cannot be utilized if the reservoir tank is integrally provided to the upper part ... | 09/23/2003 |
| 6576128 | Magnet assembly for removing ferrous metal particles from fluids A magnet assembly includes a ring shaped magnet having a face with an inner surface that is removably attachable to a ferrous metal housing of a fluid filter. The face has a plurality of circumferentially spaced pairs of poles that concentrate the magneti... | 06/10/2003 |
| 6558541 | Contaminant capture device and method for use A contaminant capture device that is adapted to be immersed in a circulating fluid contained in an enclosed reservoir space, where the enclosed reservoir includes a wall formed with an opening. The capture device includes an installation cap configured fo... | 05/06/2003 |
| 6554999 | Magnetic assembly to applied against an oil filter A magnetic device for attachment to an exterior wall of an oil filter canister whose purpose is to attract ferrous particles being conducted through the oil passing through the oil filter canister and cause such to be adhered to the inner wall surface of ... | 04/29/2003 |
| 6551506 | Magnetic oil filtering apparatus A magnetic oil filtering apparatus includes a magnetic assembly apparatus which includes a magnet assembly base plate which includes base plate oil flow channels and an internally threaded connection channel for mounting on an externally threaded mounting... | 04/22/2003 |
| 6533072 | Fluid supply system A fluid supply system is constructed to have an oil ontainer 21, a transmission device 13 subjected to the supply of lubricating oil from the oil container, a lubricating oil supply tube 22 introducing lubricating oil from the oil container 21 to the tran... | 03/18/2003 |
| 6503393 | Oil pan containing a magnetic filter apparatus An oil pan containing a magnetic filter apparatus includes an oil pan member having a magnet assembly reception channel. A magnetic filter assembly is received in the magnet assembly reception channel, and attachment means are provided for attaching the m... | 01/07/2003 |
| 6484847 | Lubricant pump with magnetic and centrifugal traps A hermetic compressor assembly includes a compressor housing having a quantity of liquid lubricant therein. A compressor mechanism is provided within the compressor housing and a drive shaft is selectively rotatable and operably connected to the compresso... | 11/26/2002 |
| 6461504 | Contaminant filter with magnetic filtration capabilities In a fluid filter, magnetic filtration of ferrous particles is provided by an adhesive having magnetic properties which is placed within a filter assembly in either a structural or nonstructural capacity.... | 10/08/2002 |
| 6457562 | Lower bearing mount for sealed compressor An improved bearing for a sealed compressor incorporates a bearing mount mounted radially outwardly of the bearing. Oil supply passages extend through the bearing mount to supply lubricant to the bearing. A magnet is positioned outwardly of the bearing mo... | 10/01/2002 |
| 6450790 | Refrigerating cycle or compressor having foreign matter collector The present invention is intended to remove foreign matter such as worn powder in a refrigerating cycle and enhance the reliability in a refrigerating cycle using, in particular, HFC refrigerant. In the invention, accordingly, a coil shaped connection pip... | 09/17/2002 |
| 6444123 | Magnetic oil filtering apparatus A magnetic oil filtering apparatus is provided which fits onto an oil filter mounting stem of an engine block which includes oil output channels. The magnetic oil filtering apparatus includes an adaptor unit which fits onto the oil filter mounting stem an... | 09/03/2002 |
| 6413421 | Filter device with magnetic member In an oil filter for filtering oil from an internal combustion engine, a protection member is inserted into an inner peripheral side of a filter element assembly, a recess portion is provided in the protection member to be recessed from an outer periphera... | 07/02/2002 |
| 6401869 | Axle driving apparatus A housing cannot be made compact by only securing a space corresponding to a reservoir tank at the upper part of the housing, and the space at the upper part of the housing cannot be utilized if the reservoir tank is integrally provided to the upper part ... | 06/11/2002 |
| 6337012 | Universal magnetic filter insert A dis-attached, monlithic magnetic filter hand inserted into the inner chamber of an oil filter canister or a fuel line enables a non-skilled user to turn an ordinary oil filter into an improved magnetic filter for attracting particles less than 30 micron... | 01/08/2002 |
| 6290479 | Magnetic debris trap A scroll compressor is positioned in a housing having an end cap defining an oil sump. A shaft extends towards the oil sump and has an oil pick-up tube. A magnet is positioned on the end cap through a number of embodiments which properly position the magn... | 09/18/2001 |
| 6270667 | Oil filter not using filter paper but using permanent magnets An oil filter, not using a filter paper element, and not having a strainer component, including an array of relatively large permanent magnets, either disc-shaped or stick-shaped. The array is dimensioned to occupy an area which is substantially equal to ... | 08/07/2001 |
| 6267875 | Reusable spin-on multi system oil filter and method of reclaiming used filter canisters The invention is a spin-on type filter with a reclaimed permanent filter casing and permanent filtering media that are washable and reusable. There are three distinct progressive filtering systems that function simultaneously,but separately within one fil... | 07/31/2001 |
| 6210572 | Filter and method for purifying liquids containing magnetic particles A filter for removal of magnetic particles in which a liquid flows through a first compartment containing magnetic balls tightly packed together so that there is no direct flow path but only around these magnetic balls. Increased mixing of flow coupled wi... | 04/03/2001 |
| 6207050 | Magnetic core for an oil filter A filter (10) for a vehicle is provided. The filter includes a casing (12) having an inlet (22), a plurality of outlets (25) and a passage extending within the casing. The inlet and outlet are adapted to be in fluid communication with a fluid system of a ... | 03/27/2001 |
| 6159367 | Telescopic housing for a magnet array A telescopic housing is provided for a magnet array and includes a first telescopic housing member, a first strap reception member connected to the first telescopic housing member, a second telescopic housing member which receives the first telescopic hou... | 12/12/2000 |
| 6117318 | Rotating motorized conveyor pulley drum having a magnetic particulate trap A motorized conveyer pulley in which an electric motor is enclosed in a rotating cylinder having a cylindrical inner surface has permanently mounted on the inside surface a magnetic material with sufficient surface to attract and retain magnetic particles... | 09/12/2000 |