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| Number | Title | Issue Date |
| 7413415 | Reciprocating electromagnetic micro-pump, particularly for small electrical appliances Reciprocating electromagnetic micro-pump, particularly for small electrical appliances, whose pumping chamber is defined by a tubular element, movable axially, against the action of a contrasting spring, between an advanced position of normal operation of the pump a... | 08/19/2008 |
| 7273041 | Fuel system combination valve for an internal combustion engine and such a fuel system The invention relates to a combination valve (15) for pressure control and venting in a fuel system for delivering fuel to an internal combustion engine. The valve comprises a primary valve cone (25), which is supported so that it is displaceable betwe... | 09/25/2007 |
| 7176443 | Optoelectronic sensor and process for detection of an object in a monitored area An optoelectronic sensor, especially a reflection photoelectric barrier and a reflection light sensing device, for detection of an object (2) in a monitored area, with a housing (3) with transmitting and receiving optics (6) and with an evaluati... | 02/13/2007 |
| 7140847 | Integrated high vacuum pumping system The present invention relates to the integration of a TMP with the associated bypass line and valves so that a single sub-assembly is created. The housing of the TMP is significantly modified to accommodate the associated equipment necessary for constructing a high-... | 11/28/2006 |
| 7052243 | Pressure regulating valve A pressure maintenance assembly for a domestic water well system. The assembly comprises a pressure maintenance valve having an inlet side and an outlet side, a pressure tank in fluidic communication with the outlet side, and a calibrated bypass. When the valve is c... | 05/30/2006 |
| 6945062 | Heat pump water heating system including a compressor having a variable clearance volume A heat pump water heater system includes a compressor that has a variable clearance volume that can be selectively controlled to control the mass flow rate of refrigerant from the compressor. Under higher ambient air temperature conditions, the variable volume is in... | 09/20/2005 |
| 6494687 | Metering device for viscous liquids with a plurality of selectively engaged metering pumps, metering channels, supply channels, and bypass channels for flush cleaning A metering device for liquids, especially for viscous liquids, preferably liquids which are to be metered under sterile conditions, with a plurality of metering pumps which can be simultaneously actuated. To achieve an optimized mode of operation, it is p... | 12/17/2002 |
| 5980219 | Piston-type compressor, especially for generating compressed air in motor vehicles In a piston-type compressor, especially for generating compressed air in motor vehicles, there is a suction plate on the underside of a valve support, clamped between the cylinder and cylinder head, facing the compressor piston. The suction plate consists... | 11/09/1999 |
| 5950669 | Pressure valve The invention relates to a pressure valve for installation in a supply line between a pump work chamber of a fuel injection pump and an injection site in an internal combustion engine to be supplied thereby. A valve body is provided with a valve seat and ... | 09/14/1999 |
| 5871338 | Vacuum pump with a gas ballast device The invention pertains to a vacuum pump (1) with a closable line (63, 102) through which gas ballast can be fed into the pump chamber (8, 9); to eliminate the danger that a recipient hooked up to the vacuum pump may be charged with air in the event of a p... | 02/16/1999 |
| 5700136 | Digital pump with bypass inlet valve A pump which has a digitally controlled internal by-pass valve. The pump includes a housing which has a pumping chamber that contains a piston which pumps fluid from an inlet port to an outlet port of the housing. The pump also has an intake valve that mo... | 12/23/1997 |
| 5588809 | Metering pump with a vent valve Metering pumps for the metered feed of liquids are fitted with an intake valve built into an intake line from an intake container, a pump chamber downstream of it with a pumping component altering its displacement volume, a pressure valve leading to the m... | 12/31/1996 |
| 5572919 | Apparatus for controlling pressure in a cylinder chamber of a hydraulic pump-motor An apparatus controls a pressure in a cylinder chamber of a hydraulic pump-motor. The cylinder chamber is formed by fitting a piston in a cylinder bore of a rotatable cylinder block, and the cylinder block is rotated so that ports going to the cylinder ch... | 11/12/1996 |
| 5564907 | Evacuating apparatus An evacuating apparatus includes a first pump section disposed on a suction opening side, a second pump section for exhausting a smaller amount of gas than the first pump section, the second pump being disposed in an exhaust opening side, a plurality of r... | 10/15/1996 |
| 5503537 | Gas compressor The present invention relates to a gas compressor which prevents noise being produced in the suction conduit during idling. In conventional systems, the noise results from the collision of arriving and returning gas by means of a check valve provided betw... | 04/02/1996 |
| 5378116 | Over-pressure relief means Inlet valves, in a fluid-pressuring cylinder, are biasingly held in given operative positions where they occlude passageways, formed in the cylinder, which open at opposite ends onto the cylinder interior and the cylinder exterior. When an incompressible ... | 01/03/1995 |
| 5293897 | Pressure valve A pressure valve to be secured into a supply line between a pump work chamber of a fuel injection pump and a injection location of an internal combustion engine to be supplied with fuel. A pressure valve closing element provided with a sealing face is pre... | 03/15/1994 |
| 5203803 | Reverse osmosis water purifier booster pump system A reverse osmosis water purification system that incorporates a high torque low speed motor to drive a pump, such that the pump can continuously pump water from a source of water to an osmotic membrane. The system may have a reservoir to store the purifie... | 04/20/1993 |
| 4926902 | Pressure equalizer valve device of fuel injection pump A pressure equalizer valve device incorporated in a fuel delivery valve assembly for use in a fuel injection pump, the fuel delivery valve assembly having a valve chamber and a delivery valve member axially movable in part within the valve chamber, the pr... | 05/22/1990 |
| 4869291 | Compressor plate valve A compressor plate valve has a valve seat, a valve guard and at least one valve plate which is mobile to-and-fro therebetween to control passage channels provided in the valve seat. To enable the compressor to be switched to idle running, a lifting device... | 09/26/1989 |
| 4840544 | Hydraulic pump assembly associated with accumulator A hydraulic pump assembly for use in combination with an accumulator comprises a pump housing provided with an inlet port for connection to a fluid reservoir and an outlet port for connection to the accumulator, a single cam shaft rotatably mounted within... | 06/20/1989 |
| 4840548 | High pressure plunger pump A high pressure plunger pump comprises a centrally arranged pressure valve, an oscillatingly movable plunger, a sleeve guided on the plunger and limiting a working chamber, a suction pump which surrounds the sleeve and accommodates an aspirated fluid, the... | 06/20/1989 |
| 4834134 | Two-way delivery valve structure of a fuel discharge valve in a fuel injection pump A two-way delivery valve structure of a fuel discharge valve in a fuel injection pump has a valve holder formed in an interior part thereof with an oil chamber communicating with a fuel injection pipe, a valve seat secured in the holder and formed in an i... | 05/30/1989 |
| 4692102 | Fuel injection pump for internal combustion engines A pressure valve is proposed herein which is built into the injection pump, its valve closing body being guided in a valve carrier, and arranged to open in the supply direction of the fuel, counter to the force of a restoring spring. A check valve is buil... | 09/08/1987 |
| 4687421 | Frangible pressure relief disc assembly and positive displacement pumps containing the disc assembly A frangible pressure relief disc assembly is disclosed which is adapted to fit into a positive displacement pump on the suction side of each cylinder. The disc assembly provides a pressure relief when the fluid passing through the pump encounters a closed... | 08/18/1987 |
| 4651779 | Constant-pressure delivery valve for fuel injection pumps for diesel engines A constant-pressure delivery valve for fuel injection pumps for diesel engines includes a conical-surface obturator to which is fixed a body forming an axial chamber containing a calibrated one-way valve with a ball obturator. The ball obturator is locate... | 03/24/1987 |
| 4648369 | Pressure valve A pressure valve is proposed which is installed in the supply line which leads from a fuel injection pump to a fuel injection valve. The pressure valve has a return-feed collar provided with a throttle connection and a relief conduit is provided parallel ... | 03/10/1987 |
| 4519750 | Variable-delivery refrigerant compressor A variable-delivery refrigerant compressor wherein the delivery of a compressed refrigerant is adjustable by an actuator which is movable with a discharge pressure of the compressor between a first position at which plural discharge valves corresponding t... | 05/28/1985 |
| 4507059 | Variable delivery compressor A variable delivery compressor having therein a plurality of compression chambers is adapted for compressing a refrigerant gas of a cooling circuit. The compressor has a first delivery chamber communicating with the compression chambers by way of a fixedl... | 03/26/1985 |
| 4507054 | Liquid dispensing system A liquid dispensing system comprising a collapsible container, a dispensing head, a conduit leading from the container to the dispensing head and a pump for pumping liquid from the container through the conduit to the dispensing head. A vacuum switch is r... | 03/26/1985 |
| 4478558 | Downhole pump with check valve A liquid pump is provided and particularly a downhole pump for use in an oil well bore for pumping oil or in a gas well to remove condensate. The downhole pump includes a plurality of pump and transfer modules, each of which includes an elongate housing w... | 10/23/1984 |
| 4467767 | Fuel injection pump for internal combustion engines A fuel injection pump for internal combustion engines having an equal-pressure relief valve, which has a structure requiring little space when installed and is provided with a fastener element. The equal-pressure relief valve comprises a pressure valve bo... | 08/28/1984 |
| 4459086 | Fuel injection pump for internal combustion engines The support of a relief valve in a constant pressure relief valve of the fuel injection pump comprises a bolt and two openings for receiving it in the sheath-like wall of the movable valve closing body. The openings are embodied by a bore drilled through ... | 07/10/1984 |
| 4427347 | Fuel injection pump for internal combustion engines A fuel injection pump for internal combustion engines with the injection pump including a dual-acting check valve arranged between the pump cylinder and a valve holder of the injection pump. The check valve is constituted by a resilient valve disk which i... | 01/24/1984 |
| 4413955 | Swash plate compressor A swash plate compressor especially suited for automotive vehicles. The inner housing may be moved in the rear housing in the front and rear direction, as the occasion may demand, for adjusting the compression capacity or performance of the compressor. A ... | 11/08/1983 |
| 4407640 | Reciprocating pump having unique pressure control valve construction A reciprocating pump, in which a pressure control valve has a pressure-receiving face and is supported to a valve seat bearing at least one of suction and discharge valves, the pressure-receiving face being disposed within a discharge passage, and at a cy... | 10/04/1983 |
| 4403921 | Multi-cylinder variable delivery compressor A multi-cylinder variable delivery compressor containing a plurality of compression chambers is adapted for use in compressing a refrigerant gas of a cooling circuit. The compressor has a first delivery chamber communicating with the compression chambers ... | 09/13/1983 |
| 4370102 | Fluid pumping device A device for pumping fluid includes a main pump device and an auxiliary device integrally fixed thereto. The auxiliary device can function as a damper, cut-off valve, check valve and relief valve. The auxiliary device includes a first and second room sepa... | 01/25/1983 |
| 4168940 | Fuel injection pump A fuel injection pump for delivery of fuel under high pressure to combustion chambers and in which the fuel is delivered by a rotating and reciprocating pump piston. The relative angular position of the pump piston with respect to its drive shaft defines ... | 09/25/1979 |
| 4120614 | Hand bicycle pump with pressure preselection and display means A hand bicycle pump of generally cylindrical configuration essentially comprising a pump body adapted to be reciprocated on a pump rod. An air circulation chamber communicates at one end through the compression piston with the compression chamber in the p... | 10/17/1978 |
