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| Number | Title | Issue Date |
| 8182247 | Pump with stabilization component In at least some embodiments, a pump includes a turning member and a reciprocating member coupled to the turning member, the reciprocating member performing a pumping motion as the turning member turns. The pump also includes at least one stabilization component in ... | 05/22/2012 |
| 8182246 | High pressure open discharge pump system A high-pressure cam driven open discharge pump system is provided, wherein a high-pressure output at a relatively constant pressure is formed. The pump system includes a plurality of pressurizing subassemblies, each subassembly including a cam follower retained by a... | 05/22/2012 |
| 8147224 | Air pump with a one-piece cylinder An air pump has a one-piece cylinder and a piston assembly. The one-piece cylinder has a body, a cap, a pedal and a base formed together by injection molding and welding process. The piston assembly is mounted in the one-piece cylinder and has a rod, a handle and a ... | 04/03/2012 |
| 8075286 | Compressor for liquid or gaseous fluids A double-acting compressor to compress liquid or gaseous fluids includes a cylinder having a piston head that reciprocates between opposite ends of the cylinder; a fluid discharge and suction passages defined in at least one of the opposite ends of the cylinder; a f... | 12/13/2011 |
| 7905713 | Method of operation of a reciprocating positive-displacement pump and reciprocating positive-displacement pump A method for operating a reciprocating positive displacement pump for the simultaneous low-pulsation discharge of a plurality of liquids, having for each liquid at least two pump chambers and displacement devices capable of movement therein, of which the one displac... | 03/15/2011 |
| 7758325 | Compressor system and frame A reciprocating compressor is provided. In one embodiment, the reciprocating compressor includes a frame having a central body and a crosshead guide extending from the central body. The compressor may also include a crosshead disposed within the crosshead guide and ... | 07/20/2010 |
| 7348894 | Method and apparatus for using a data telemetry system over multi-conductor wirelines A data telemetry system for multi-conductor wirelines to enhance transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a first terminal of a data re... | 03/25/2008 |
| 7329105 | Multi-directional pump A multi-directional pump is disclosed generally comprising a housing with inlet and outlet ports, a pumping device disposed therein, a first chamber in fluid communication with the inlet port, and a second chamber in fluid communication with the first chamber. The f... | 02/12/2008 |
| 7252486 | Hand-operated inflator A hand-operated inflator with dual cylinder is provided. Once the cylinders are pulled out on two sides of the central block to form a line axially, and a clamp plate at mid point in between the two cylinders is turned to the transversal position to lock the cylinde... | 08/07/2007 |
| 7134846 | Radial piston pump with eccentrically driven rolling actuation ring An hydraulic head features two or three individual radial pumping pistons and associated pumping chambers, annularly spaced around a cavity in the head where an eccentric drive member with associated outer rolling actuation ring are situated, whereby a rolling inter... | 11/14/2006 |
| 7131822 | Swash plate compressors with non-circular pistons and cylinders A swash plate compressor comprises a swash plate located for rotation in a housing and a compression unit that forms a part of the housing. The compression unit has cylinder bores that guide pistons in reciprocation as the swash plate rotates. Each cylinder bore has... | 11/07/2006 |
| 7121067 | Method of longitudinally sealing tubular bag-making material A packaging machine moves its heater unit for longitudinal sealing of a tubularly formed film between a sealing position at which the heater unit contacts the film and a retracted position at which it is separated from the film. In addition to the mechanism for this... | 10/17/2006 |
| 7040873 | Multi pumping chamber magnetostrictive pump A positive displacement pump includes a magnetostrictive actuator. A single actuator drives multiple pumping chambers. The pump may include two pumping chambers driven in phase by the linear expansion of the actuator at both its ends. The pump may include a third pu... | 05/09/2006 |
| 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 |
| 7033148 | Electromagnetic pump An electromagnetic micropump for pumping small volumes of liquids and gases comprises a magnetic actuator assembly, a flexible membrane and a housing defining a chamber and a plurality of valves. The magnetic actuator assembly comprises a coil and a permanent magnet... | 04/25/2006 |
| 7026951 | Data telemetry system for multi-conductor wirelines An improved data telemetry system for multi-conductor wirelines to achieve satisfactory transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a firs... | 04/11/2006 |
| 7008366 | Circumferentially driven continuous flow centrifuge A centrifuge (10) including a first rotatable mechanism (60) having a rotation axis with a fluid retentive housing (20) being coaxially mounted on the first rotatable mechanism for co-rotation therewith; a second rotatable mechanism (90) ... | 03/07/2006 |
| 7004734 | Reciprocating refrigerant compressor An inlet port 15 is divided into a plurality of holes 15a, 15b, 15c, 15 by ribs 61a, 61b, 61c. For example, when liquid refrigerant is compressed within a compression c... | 02/28/2006 |
| 6945202 | Free piston engine and power generation system therewith A first piston connected to a first shaft and a second piston connected to a second shaft are supported within a housing by using a first leaf-spring unit and a second leaf-spring unit, respectively. Therefore, axial movement of the first shaft or the second shaft c... | 09/20/2005 |
| 6935850 | Axially aligned dual piston cylinder air pump with a common head portion A dual-direction pump includes two cylinders arranged on opposite sides of a head portion and an inlet return-flow prevention device and a leakproof device mounted between the cylinder and the head portion for avoiding leakage at the juncture between the cylinder an... | 08/30/2005 |
| 6905314 | Pump having flexible liner and compounding apparatus having such a pump A pump has a flexible liner which is expanded and contracted by application of positive and negative fluid pressure for receiving and discharging fluent material. The liner is received in a rigid shell which defines the maximum volume received. In discharging fluent... | 06/14/2005 |
| 6893231 | Hydraulic device The invention relates to a hydraulic device provided with a housing having at least a first line connection and a second line connection and, if appropriate, further line connections, a rotor which can rotate in the housing and chambers which are alternately connect... | 05/17/2005 |
| 6832900 | Piston mounting and balancing system 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 ... | 12/21/2004 |
| 6773238 | Pumping device for discharging large amounts of liquid This invention relates to a device for pumping high delivery volumes of a liquid, with at least two pumps each forming a single structural unit, which are jointly hooked up to a pressure line on the delivery side, and coupled to a single drive. The device according ... | 08/10/2004 |
| 6764285 | Hydraulic pump unit The invention relates to a hydraulic pump unit having a plurality of pump elements, disposed in one plane, each of which has one pump cylinder and one pump piston longitudinally displaceable in the pump cylinder, and whose longitudinal axes intersect at a common int... | 07/20/2004 |
| 6755631 | Securing means for a compressor's terminal box A cover apparatus has a cover main body held to a compressor by using a clip to cover a terminal and electrical parts connected to the terminal, the clip having an elasticity. The cover main body has a an internal passageway or pass portion formed in an inner portio... | 06/29/2004 |
| 6733256 | Device for producing consumables The invention relates to a device for producing consumables, especially filled chocolates that consist of a coated filling. The aim of the invention is to provide a device for feeding substances of the consumables to nozzles in a controlled manner. To this end, the ... | 05/11/2004 |
| 6716005 | Pump provided with diaphragms and an eccentric rotation shaft In a pump, a plurality of pump chambers are defined by a plurality of diaphragms. A pivotable member is attached to the diaphragms. A rotator is formed with a first hole having a first diameter, which is arranged eccentrically from a rotation center of the rotator, ... | 04/06/2004 |
| 6692236 | Two-stage compressor with torque reducing crankshaft The two cylinder and piston systems (1, 3), operating in series, are driven by a crankshaft, with a minimum or even zero phase difference.... | 02/17/2004 |
| 6692239 | Reciprocating compressor A reciprocating compressor of un-lubricating type, equipped with a cooling device including a cooling fan beneath a motor and provided with four gas compressors, each having a cylinder and a piston. The pistons of each gas compressor cooperate by converti... | 02/17/2004 |
| 6676390 | Manual air pump incorporating a foot switch in the base member A manual air pump with a handle includes a base member, a foot switch, an outlet cylinder, an inner cylinder and a pumping assembly. The foot switch is mounted on the base member. The outlet cylinder is mounted vertically on the base member. The inner cyl... | 01/13/2004 |
| 6663350 | Self generating lift cryogenic pump for mobile LNG fuel supply system A high pressure pump and delivery system mating to LNG storage and suited for natural gas powered trucks and buses, but also suitable for other cryogenic liquid fuels. The reciprocating pump is comprised of a liquid pumping portion and a vapor compressing... | 12/16/2003 |
| 6648615 | Inflator A dual-direction inflator has a tube and a cover mounted on the tube. A rod extends through the cover and is inserted in the tube. A piston is received in the tube and mounted on an end of the rod. The piston has an air-in chamber and an air-out chamber d... | 11/18/2003 |
| 6637200 | Membrane-activated hydraulic actuator A hydraulic actuator that is capable of substantial actuation but does not require a conventional pump, uses only deflectable membranes and passive valves, or, at most, a minimum of active valves, and, under certain circumstances, may be free to move when... | 10/28/2003 |
| 6629828 | Thermal expansion inlet connection for a high pressure pump The invention relates to an arrangement in a pump block. The pump block includes a plurality of pump valves each connected to a piston in a piston pump. The pump block also includes an inlet pipe which is common to all of the pump valves. The inlet pipe h... | 10/07/2003 |
| 6623256 | Pump with inertance value of the entrance passage being smaller than an inertance value of the exit passage Since many valves are used, pressure loss is large, resulting in low reliability of a pump. Even when the period of increasing and decreasing the volume of a pump chamber is long, and a piezoelectric element is used as an actuator that drives a diaphragm,... | 09/23/2003 |
| 6619932 | Restarting device of a pump change-over valve which induces a pressure difference within the pump change-over valve to remove the latter from an intermediate stalled position A restarting device of a pump change-over valve in a pump is provided, in which the pump includes; a pump main body 1 and a change-over valve 2. The change-over valve 2 is provided with a pair of pressure chambers 31 and 32 formed at respective ends on th... | 09/16/2003 |
| 6589028 | Diaphragm pump A diaphragm pump includes a pump housing having an inlet and an outlet for the fluid. The pump housing (2) includes a partition wall (4) which delimits two chambers (3) on a respective side of the partition wall. The two chambers are each closed by a resp... | 07/08/2003 |
| 6554585 | Power generating assembly capable of dual-functionality A power generating assembly structured to have dual functionality by combining an interactive operation of both an engine assembly and a compressor assembly in an at least partially segregated or isolated relation to one another within a common housing. T... | 04/29/2003 |
| 6551078 | Pump assembly for an aquarium A pump assembly for an aquarium includes a water circulation pump having a first casing and an aeration pump having a second casing, wherein the aeration pump is operated by the magnetic field of a rotating magnetic shaft that is rotatably mounted in the ... | 04/22/2003 |
