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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 6968815 | Actuating device for securing a camshaft of an engine of a motor vehicle in a start position An actuating device for hydraulically securing a camshaft of an engine of a motor vehicle in a start position has a solenoid valve controlling the flow of a pressure medium to a camshaft adjuster with a rotary slide valve that is fixedly connected to the camshaft an... | 11/29/2005 |
| 6764287 | Pump provided with diaphragms A casing body is formed with a vent hole. The casing body has an inner face formed with a plurality of grooves respectively communicated with the vent hole. A plurality of diaphragms are respectively inserted into the grooves to form a plurality of pump chambers. An... | 07/20/2004 |
| 6568916 | Axial piston pump with outer diameter inlet filling A variable delivery fixed displacement pump is provided which has a rotating drive plate with a fixed angle. The drive plate has a fill passage extending between its radial outer surface and its drive surface, which allows fluid to be supplied to a fluid ... | 05/27/2003 |
| 6318977 | Reciprocating compressor with auxiliary port A reciprocating compressor that includes an auxiliary port 38 in series with a check valve 40 to move fluid at an intermediate pressure that is between the main suction and discharge pressures. Piston 31 normally covers the auxiliary port during a portion... | 11/20/2001 |
| 6146115 | Piston pump A piston pump which is intended particularly for use in a slip-controlled hydraulic vehicle brake system. To increase a pumping volume of the piston pump at low pumping pressure, the piston pump includes a body embodied preferably as an annular body which... | 11/14/2000 |
| 5603609 | Variable delivery swash plate pump having a piston located spill port An axial piston pump has multiple pistons and cylinders with a spill port in each piston. A sleeve controls venting from the spill port and an inlet is provided to each cylinder, by way of a check valve from a fluid supply.... | 02/18/1997 |
| 5593288 | Liquefied gas pump A liquefied gas pump includes a piston and a cylinder which form a pump chamber into which a liquefied gas entrance path and a liquefied gas discharge path open. Relative upward and downward motion between the piston and cylinder provides a repetition of ... | 01/14/1997 |
| 5315978 | Fuel injection system A fuel injection system which can effectively control a residual pressure in an injection pump so as to reduce soot and hydrocarbons in an exhaust gas when an engine is operating at a low speed. The fuel injection system features a structure in which a pa... | 05/31/1994 |
| 5167495 | Reciprocating hydraulic pump A hydraulic pump comprises at least one reciprocating piston (2) sliding in a stationary cylinder (4), a non-return suction valve (12) arranged between a source of fluid under low pressure and a working chamber (10) defined in the cylinder (4), and a firs... | 12/01/1992 |
| 5165875 | Reciprocating hydraulic pump The hydraulic pump comprises at least one reciprocating piston (2) sliding in a stationary cylinder (4). The piston (2) comprises, on the same side as the working chamber (10), a cylindrical skirt (22) which has the inside diameter of the cylinder (4) and... | 11/24/1992 |
| 5135367 | Fuel injector A fuel injector for diesel engines, having at least one pump plunger (1), which is sealingly guided in a plunger bushing (2) and, together with said bushing, defines a high-pressure space (5). The pump plunger (1) has an internal suction valve (6) which c... | 08/04/1992 |
| 5067880 | Fuel injection device A fuel injector for diesel engines, having at least one pump plunger (1), which is sealingly guided in a plunger bushing (2) and, together with said bushing, defines a high-pressure space (5). The pump plunger (1) has an internal suction valve (6) which c... | 11/26/1991 |
| 4537284 | Lubricant distributor The progressive distributor contains a control piston which is slidable in a cylinder. The piston contains a main channel and a plurality of radially disposed distribution channels for distributing lubricant. The cylinder has feed channels which are align... | 08/27/1985 |
| 4484866 | Piston pump A piston pump includes a cylinder with a bore receiving the piston. The piston forms a central passage leading to a variable volume chamber and a check valve is disposed in the central passage. In addition, the cylinder includes a pair of ports which sele... | 11/27/1984 |
| 4249868 | Pump for high viscosity lubricants with improved priming feature A pump for pumping high viscosity lubricants such as wheel bearing grease comprising a pump tube adapted to be disposed within a container of the lubricant, a piston rod and piston movable within the tube, an outlet at the upper end of the tube, an inlet ... | 02/10/1981 |
| 3945772 | Pumps for transferring small quantities of dosed liquids The invention relates to a cylinder and plunger pump for transferring very small quantities of dosed liquids. The purpose of the invention consists in the realization of relatively small pumps of which the piston need only perform a very small reciprocati... | 03/23/1976 |
