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| Number | Title | Issue Date |
| 6644945 | Valve arrangement for limiting piston stroke collisions in a reciprocating compressor with a linear motor A reciprocating compressor includes a linear motor having a piston reciprocating inside a cylinder. A cylinder head is provided with suction and discharge orifices. A valve means is mounted inside the cylinder and has an operative position, seated against... | 11/11/2003 |
| 6565333 | Fluid discharge apparatus and fluid discharge method A positive displacement pump is composed of a first actuator for relatively moving a piston and a housing, a cylinder for accommodating the piston, and a second actuator for relatively moving the cylinder and the housing.... | 05/20/2003 |
| 5558504 | Magnetostrictive pump for applying pastes and adhesives A device is proposed for applying material such as solder paste and glue in discrete points, particularly for applying solder paste on electronic circuit boards. The device comprises a pump house (202-205; 301, 307), a tube or a channel (206) by means of ... | 09/24/1996 |
| 5520521 | Hydraulic control device for a viscous fluid pump In a hydraulic control device for a viscous fluid pump with at least one feed cylinder (11) drivable by a hydraulic cylinder (12), the feed chamber (17) of which can be alternately connected via a hydraulically operable inlet valve (18) a hydraulically op... | 05/28/1996 |
| 4762474 | Pump having reciprocating pipe and slidably supported hollow body A bore hole pump which eliminates the need for a piston sealingly engaging with the walls of the pump body. The pump comprises a hollow body closed at its lower end by a non-return inlet valve and slidably and sealingly supporting at its upper end, via a ... | 08/09/1988 |
| 4722675 | Piston proportioning pump A piston proportioning pump for liquids, with a piston in a cylinder, an uptake and discharge valve and an oscillating drive is improved so that the formation of vapor bubbles or of a low pressure during the suction phase is prevented even when the pump s... | 02/02/1988 |
| 4479758 | Piston filler A piston filler for metering two fluids intermittently comprising a cylinder having a first and a second inlet conduit and an outlet conduit, means for closing the communication between the cylinder and the first inlet conduit and between the cylinder and... | 10/30/1984 |
| 4411601 | Pump for metering two distinct fluids A pump for metering two fluids comprising a cylinder having a first and second inlet conduit and an outlet conduit, means for closing the communication between the cylinder and the first inlet conduit and between the cylinder and the outlet conduit altern... | 10/25/1983 |
