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| Number | Title | Issue Date |
| 7850435 | Fuel injection device for an internal combustion engine A fuel injection apparatus has a high-pressure pump and a fuel-supply pump that delivers fuel from a fuel tank to the high-pressure pump. The high-pressure pump has a housing with an internal chamber that contains a drive unit for at least one pump element having a ... | 12/14/2010 |
| 7354255 | Piston vibratory pump The present invention is an improved vibratory pumping mechanism that increases the efficiency of utilization of the vibratory motion within a mechanism. More specifically, the mechanism includes a central chamber within which a piston is oscillated to draw fluid in... | 04/08/2008 |
| 7226276 | Multi-stage reciprocating vacuum pump and method of operating the same A multi-stage reciprocating vacuum pump includes first (2) and second (4) pump chambers located in the pump housing (1) and in which respective pistons (6, 8) reciprocate, first and second conduits (14, 20) for communicating, respe... | 06/05/2007 |
| 7077107 | Fuel-injection device for an internal combustion engine Fuel injection system having a feed pump by which fuel is pumped out of a fuel tank to the intake side of a high-pressure pump pumps fuel into a reservoir as a function of engine operating parameters. A fuel metering device is provided for adjusting the fuel quantit... | 07/18/2006 |
| 7037090 | Crankcase sealing apparatus A compact 180° opposed piston pump/compressor minimizes axial spacing between its pistons on the drive shaft and thereby reduces the shaking couple and noise from reciprocation. Each piston has its own eccentric element press-fit into the connecting rods so as not ... | 05/02/2006 |
| 6971857 | Fuel injection pump A fuel injection pump prevents the uninterrupted supply of fuel through an orifice to a cam chamber. An orifice inlet is formed on the same plane as a wall surface of a discharge fuel chamber. As a result, foreign substances, which are carried with the flow of the f... | 12/06/2005 |
| 6776587 | Dual-stage, plunger-type piston compressor with minimal vibration The invention relates to a piston arrangement for a dual-stage piston compressor, comprising a cranksbaft and several cylinders which house the operating piston. Said arrangement allows two or more low-pressure stages and at least one high-pressure stage to be forme... | 08/17/2004 |
| 6725844 | High-pressure pump with an on-off valve for feeding fuel to an internal combustion engine The pump has a body including at least a fuel compression chamber and an actuating chamber enclosing the actuating members of the pump. The on-off valve has a shutter sliding inside a hole in the body to close a fuel feed conduit. The shutter is held in the closed p... | 04/27/2004 |
| 6722857 | Pump assembly for fuel A pump assembly having a main pump and a prefeed pump which pumps fuel out of a tank. The fuel is pumped through a crank chamber of the main pump. Downstream of the crank chamber f the main pump a return line is provided for the portion of the fuel which is used as ... | 04/20/2004 |
| 6553971 | High-pressure pump with an on-off valve for feeding fuel to an internal combustion engine The pump has a body including at least a fuel compression chamber and an actuating chamber enclosing the actuating members of the pump. The on-off valve has a shutter sliding inside a hole in the body to close a fuel feed conduit. The shutter is held in t... | 04/29/2003 |
| 6406278 | High-pressure pump with a removable on-off valve for feeding fuel to an internal combustion engine The pump has a body including at least a fuel compression chamber and an actuating chamber enclosing the actuating members of the pump; the on-off valve is defined by an independent operating assembly insertable in fluidtight manner inside a hole in the b... | 06/18/2002 |
| 6394762 | Fuel pump A fuel pump comprising a first pumping plunger reciprocable within a first bore and defining, with the first bore, a first pumping chamber. A second pumping plunger is reciprocable within a second bore and defines, with the second bore, a second pumping c... | 05/28/2002 |
| 6293764 | Reciprocating compressor with dry lubricating system The compressor contains at least one piston (5) guided in a dry-running manner which, together with a cylinder insert (33), bounds a ring gap which is open over the common longitudinal section in each case and permits a leakage flow of the compressed medi... | 09/25/2001 |
| 5921755 | Dry vacuum pump A vacuum pump is provided with at least one cylinder having a cylinder liner and a piston mounted for reciprocating movement within the cylinder liner. The piston is connected to a crankshaft for reciprocating the piston and the piston is provided with a ... | 07/13/1999 |
| 5613837 | Air compressor inlet and outlet valve arrangement An air compressor includes a suction space, a compression space and a discharge space that are aligned with one another. The compressor also includes one-way valves that function as a suction valve and a discharging valve. The open areas of the suction va... | 03/25/1997 |
| 4979878 | Relieved piston valve for fluid motor and fluid pump An asymmetrical or relieved piston is provided in a fluid motor or a pump. The piston is rigidly connected to one end of the connecting rod, the opposite end of which is pivotally connected to a rotating crankshaft. The piston has a relieved upper and low... | 12/25/1990 |
| 4476851 | Windmill energy system A windmill energy system for extracting energy from available wind power comprising a windmill in combination with a compressor pump in an essentially closed loop system with the compressor pump including a tubular upper section having a cylindrical bore ... | 10/16/1984 |
