Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7332075 | Water filter assembly A water filter assembly comprising a water filter arrangement and a water cooling arrangement in an integral unit. The cooling arrangements are concentrically configured with the cooling arrangement surrounding the filter arrangement. ... | 02/19/2008 |
| 7318898 | Polymeric membrane wafer assembly and method A method for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that may contain an underflow distribution weir. Next, the feed stream is exposed to a first thin film... | 01/15/2008 |
| 7314565 | Method and apparatus for separating aromatic hydrocarbons in an isothermal system An isothermal method is provided for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that contains a rib member. Next, the feed stream is exposed to a first thin f... | 01/01/2008 |
| 7303681 | Dynamic membrane wafer assembly and method A method for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that may contain an underflow distribution weir. Next, the feed stream is exposed to a first thin film... | 12/04/2007 |
| 7244357 | Pumps for filtration systems Improvements in product water throughput from a reverse osmosis (RO) membrane filter achieved by thinner feed spacers in the RO element, enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure opposing the feed water pressure... | 07/17/2007 |
| 7192131 | Filter element carrier, filter, ink pen In one embodiment, a filter element carrier comprises a first wedge shaped cavity, a second wedge shaped cavity isolated from and overlapping the first cavity, an outlet from a deep part of the first cavity, and an inlet to a deep part of the second cavity. In one e... | 03/20/2007 |
| 7005075 | Gas drive electrolytic cell The present invention is directed to an electrolytic cell that is completely sealed during the electrolysis operation during production of oxidant. Gasses generated within the electrolysis operation, primarily hydrogen that is liberated at the cathode surface, incre... | 02/28/2006 |
| 6974537 | Diesel fuel purifier The diesel purifier produces a fuel of high purity that meets the full ignition requirements at the combustion chamber of the engine. The purifier comprises a purification chamber encapsulated by an external body of the unit wherein, the purification chamber has a b... | 12/13/2005 |
| 6955754 | Compact fluid cleaning system An efficient fluid cleaning system. The efficient system includes a first mechanism for changing the pressure of a fluid from a first pressure to a second pressure, the second pressure being lower than the first pressure. A second mechanism distributes the fluid wit... | 10/18/2005 |
| 6769765 | Filter with integral heating element An apparatus (22, 122) for filtering a substance (13) includes an electrically insulating substrate (30, 130) that separates a source volume (12) containing the substance (13) from a target volume (18). The substrate (30,... | 08/03/2004 |
| 6632352 | Multi-stage filter The present invention provides a convenient way to filter water in a body of water. The invention combines an encloseable container with an internal pump producing cyclonic action, with two different types of filters. One type of filtering consists of lay... | 10/14/2003 |
| 6517711 | Waste treatment system An improved waste treatment system and improved waste treatment system components are provided. In a preferred form, a waste stream is initially separated into primarily solid and primarily liquid components, and the liquids are then fed to a filter assem... | 02/11/2003 |
| 6387282 | Method of drying a filter cake and a press for carrying out the method The filter cake in a filter press is heated by direct contact with a heating plate opposite the pressing membrane so that a vapor phase is generated which moves uniformly in a planar pressure front through the filter cake to dry residual liquid therefrom.... | 05/14/2002 |
| 6199542 | Fuel treatment apparatus A fuel treatment apparatus comprising a fuel heater assembly having: a body with a fuel inlet, fuel outlet and a fuel passageway in communication with the fuel inlet and fuel outlet; and a coolant inlet, coolant outlet and a coolant passageway in communic... | 03/13/2001 |
| 6180002 | Filter press with alternating diaphragm squeeze chamber plates and filtration chamber plates A filter press and method for separating solids from a slurry. The filter press includes a plurality of plates which are held in a sealed and contacting relationship with one another to form a plate stack. The plate stack includes alternating diaphragm-ty... | 01/30/2001 |
| 6063272 | Apparatus and method of regenerating an activated carbon filter An activated carbon filter is regenerated while it remains positioned in a filter vessel by first draining both unfiltered and filtered water out of the vessel and then applying an electric current through the activated carbon body of the filter to drive ... | 05/16/2000 |
| 5988265 | Fuel cooler and coolant filter assembly A fuel cooler and coolant filter assembly for the filtering of coolant and the cooling of a fuel flow for use in connection with a cylinder head of a vehicle engine includes three primary components which are assembled to one another in a stacked configur... | 11/23/1999 |
| 5858248 | On premise water treatment method for use in a post-mix beverage dispenser A water treatment method uses a removable, disposable cartridge having an internal mesh structure. A permanent heater heats water fed to the cartridge. Precipitated solids collect on the mesh surface provided temperature and residence time are appropriate... | 01/12/1999 |
| 5753111 | Photographic processor and improved filter assembly A quick disconnect filter assembly and manifold assembly for use in a photographic processor having a recirculating system designed for receiving a filter assembly in line. The filter assembly comprising: a housing having an internal chamber, a chamber in... | 05/19/1998 |
| 5753106 | Method of, and apparatus for, and irradiation unit for oxidative photopurification An annular throughflow photoreactor for oxidative photopurification includes an elongate radiation source surrounded by a transparent wall in the form of a spacer tube at a radial spacing of more than 3 cm, preferably in the range of more than 3 cm to 13 ... | 05/19/1998 |
| 5600954 | Tractor hydraulic reservoir heating element A heating element for the reservoir of the hydraulic system of an agricultural tractor is disclosed wherein the heating element is positioned within the interior of the inlet screen member. The heating element is formed with a threaded portion cooperable ... | 02/11/1997 |
| 5481876 | Inlet screen for tractor hydraulic system A screen member for the hydraulic system of an agricultural tractor is disclosed wherein the screen member is formed with a threaded opening to permit mounting thereof on a stationary stud fixed to the interior wall of the hydraulic system reservoir. The ... | 01/09/1996 |
| 5198123 | Plate filter press A plate filter press for the mechanical separation of solids from a liquid forming a suspension. The plate filter press is made of a plurality of vertical membrane plates and filter plates, the membrane plates and filter plates alternating. The space betw... | 03/30/1993 |
| 5143609 | Method for dewatering and drying a liquid/solid slurry and an apparatus for using the method The invention discloses an improved method and apparatus for utilizing the principal of dewatering and drying a liquid/solid slurry. Unlike the prior known method of consecutive material thickening, filtering, crushing and then subsequent drying which is ... | 09/01/1992 |
| 5089122 | Device for the separation of fluid mixtures The invention defines a device for the separation of fluid mixtures, comprising one or several membranes, in which the fluid mixture passes along one side of the membranes while, on the other side, a partial pressure of the constituent to be separated is ... | 02/18/1992 |
| 5045200 | Apparatus and method of filtering fatty acids from cooking oil A device for removing free fatty acids from cooking oil is formed by a pair of superposed reservoirs having a screen and filter pad provided partition dividing the reservoirs from each other through which the cooking is forced from the upper reservoir to ... | 09/03/1991 |
| 4999118 | Method for dewatering and drying a liquid/solid slurry and an apparatus for using the method The invention discloses an improved method, and apparatus for utilizing the method, for dewatering and drying a liquid/solid slurry. Unlike the prior known method of consecutive material thickening, filtering, crushing and then subsequent drying achieved ... | 03/12/1991 |
| 4988372 | Method and device for filtering contaminated gases laden with liquid vesicles In the method disclosed for filtering a contaminated gas laden with liquid vesicles (or aerosols) through a filter medium arranged around a center hollow through which the aerosol enters, the filter medium is heated to a temperature above the aerosol's de... | 01/29/1991 |
| 4844796 | Full water treatment apparatus for use in soft drink dispensing system A water treatment apparatus for use in a post-mix beverage dispenser enables purification of water, removal of water hardness and sterilization of water which is normally accomplished by a precipitation/floculation process used in a bottling plant. This a... | 07/04/1989 |
| 4834876 | Filtration assembly having integral heating means for maintaining the metallic material being filtered in the molten state The filtration of molten metal is obtained by providing the filtration medium, which may, for example, be formed of a granulated material, with a conductive coating or conductive particles. Electrical energy is coupled across the filter to create a curren... | 05/30/1989 |
| 4786407 | Plant for treatment of sediment of natural and waste waters A plant for treatment of sediment of natural and waste waters comprises a crystallizer (1), a melter (2), a condensing heat exchanger (4), a compression refrigerating unit (3) communicating with the crystallizer (1) and the melter (2) which is in communic... | 11/22/1988 |
| 4693816 | Biological filter heating arrangement for treatment of waste water The invention concerns a heating arrangement for ambient air introduced into a biological filter intended for the treatment of waste waters. The arrangement comprises intake openings for outside air, a member for heating the outside air, a blower, for blo... | 09/15/1987 |
| 4624779 | Fuel treatment apparatus This invention provides a novel apparatus for removing contaminants from diesel fuel while simultaneously heating such fuel, and provides a collection zone for accumulating separated water and other contaminants.... | 11/25/1986 |
| 4615801 | Rotary filtration means in the filth condensation-dehydration apparatus According to the present invention, it is possible to achieve filtration and dehydration of a large quantity of dregs. During the operation, since the rotary filtration cylinder 6a is washed, the holes in the rotary filtration cylinder 6a will not be chok... | 10/07/1986 |
| 4608161 | Heatable fuel filter for diesel engines A heatable fuel filter for a motor vehicle engine is provided wherein an electric heating element is positioned between a filter head and filter box. In order to prevent fuel contained in the filter head and fitler box from being discharged to the surroun... | 08/26/1986 |
| 4600825 | Electrically heated diesel engine fuel conveying system The invention relates to a system for conveying fuel, preferably diesel fuel, to an engine, in particular a diesel engine. The invention includes a pipe, at least one filter and a fuel pump. At least one heating element is provided on a portion of the are... | 07/15/1986 |
| 4510051 | Filter designed for the simultaneous filtration and preheating of the fuel The invention pertains to a filter designed for the simultaneous filtration and preheating of the fuel for an internal combustion engine. The filter barrel houses an annular filtering element through which the fuel generally circulates in a radial direction. H... | 04/09/1985 |
| 4351732 | Dehydration of ethanol Process and apparatus for dehydrating liquid phase ethanol in an adsorber unit containing at least two towers that cycle between adsorption and desorption cycles, characterized in the desorption cycle by an indirect heating volatilization of absorbed and ... | 09/28/1982 |
| 4264442 | Liquid traps A trapping device for trapping foreign liquids having a specific gravity greater than that of a supply liquid comprises a settling chamber defined primarily by a hollow casing, and inlet and outlet chambers in the settling chamber. An inlet and an outlet ... | 04/28/1981 |
| 4196075 | Membrane fluid transfer method and apparatus A method and apparatus for fluid transfer across a membrane wherein transfer fluid is passed through the interior of a wrapped, permeable, flattened, tubular membrane and fluid to be processed is passed through passageways formed between the wrappings of ... | 04/01/1980 |
