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President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 4427545 | Dual fuel filter system A fuel filter is provided for internal combustion engines and particularly for diesel engines utilizing a dual filter zone arrangement fed by two separate fuel supply lines, each of these lines being valved to operate in an open mode in which fuel is pump... | 01/24/1984 |
| 4420396 | Filter device for fuel tank A filter device for a fuel tank comprises an upper wall for supporting in position a tubular member such as a fuel line or a pump casing, a bottom wall disposed at a distance from the upper wall, and a cylindrical wall supporting in position a mesh encirc... | 12/13/1983 |
| 4420392 | Fuel-water separator with flow-reduction feature In a fuel-water separator including entry and exit ports for fuel connectable in a fuel line supplying an engine and fuel flow paths between the ports for separating water from the fuel, the improvement comprises first and second passages leading to the e... | 12/13/1983 |
| 4391716 | Preferential wicking system Removal of a first liquid, such as water, from a tank containing a second liquid of lower specific gravity, such as diesel fuel, is achieved with a liquid trap chamber into which the first liquid is delivered by a primer wick and from which the first liqu... | 07/05/1983 |
| 4364825 | Liquid filter A liquid filter unit can be used to filter fuel and includes a ball which is moved into a position to prevent further fuel flow through the filter unit when a predetermined amount of water is collected in the unit. One form of the unit includes a water so... | 12/21/1982 |
| 4356091 | Filtering and dampening apparatus High pressure fluid systems, such as fuel injection systems for an engine or hydraulic controls, often experience high pressure fluctuations which can cause cavitation in the system components plus secondary fuel injection in the fuel systems. Apparatus (... | 10/26/1982 |
| 4329231 | Insulating fuel filter cover A thermally insulating fuel filter cover provides thermal insulation of the fuel filter of a diesel engine such as is used in the trucking industry. The cover is a flexible cylindrical body of thermal insulating material such as expandable urethane foam w... | 05/11/1982 |
| 4312753 | Intank fuel filter An intank fuel filter of flexible woven plastic cloth having spacer means comprising protuberances secured to at least one of the flexible walls and projecting toward the opposite wall to hold the walls against collapse blocking fuelflow. The protuberance... | 01/26/1982 |
| 4303513 | Dual pick-up fuel strainer assembly A diesel fuel pick-up tube has two branches in the fuel tank. One is connected to a fuel strainer having openings of approximately 130 microns and the other is connected to a strainer having openings of about 400 to 500 microns. A vacuum relief valve is i... | 12/01/1981 |
| 4162549 | Filtering elements A back-washable filtering element, especially for use with pumps, and more particularly for use with pumps that handle liquids with solid material entrained therein, consists of a helical coil spring disposed in a flow path for the liquid to be filtered. ... | 07/31/1979 |
