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| Number | Title | Issue Date |
| 7370697 | Thrust section wear preventor A thrust section for use above a motor preferably includes a housing, a thrust shaft, a thrust runner connected to the thrust shaft, a thrust bearing connected to the housing, and a motor lead guard. The motor is preferably positioned above a pump assembly. The thru... | 05/13/2008 |
| 7147441 | Microfluidics and small volume mixing based on redox magnetohydrodynamics methods Microfluidic channels utilizing magnetohydrodynamics are used to pump very small volumes of solution. The channels have electrodes along the walls of the channel and a current carrying species within the solution carries the current through the solution. The electri... | 12/12/2006 |
| 7134499 | Rotary and reciprocal well pump system A well pumping system has a downhole rotary pump that drives a downhole reciprocating pump. The reciprocating pump is an intensifier, having a primary piston and a secondary piston of lesser diameter. A sequencing valve connects between the discharge of the rotary p... | 11/14/2006 |
| 7066248 | Bottom discharge seal section Disclosed is an electric submersible pumping system for use in wellbore. The electric submersible pumping system includes a motor assembly, a pump assembly and a seal section disposed in the wellbore. The pump assembly is below the motor and is driven by the motor. ... | 06/27/2006 |
| 7012354 | Method and structure for a pusher-mode piezoelectrically actuated liquid metal switch A method and structure for an electrical switch. According to the structure of the present invention, a liquid-filled chamber is housed within a solid material. A plurality of switch contacts within the liquid-filled chamber are coupled to the solid material, while ... | 03/14/2006 |
| 6935355 | Small scale actuators and methods for their formation and use An actuator assembly and method for making and using an actuator assembly. In one embodiment, the assembly includes an actuator body having an actuator channel with a first region and a second region. An actuator is disposed in the actuator channel and is movable wh... | 08/30/2005 |
| 6911752 | Concatenated motor assembly A concatenated motor assembly for providing rotational power that includes a continuous rotatable shaft cooperating with a first motor module assembly. The first motor module assembly communicates with a motor coupling unit, which in turn communicates with a second ... | 06/28/2005 |
| 6241480 | Micro-magnetohydrodynamic pump and method for operation of the same A micropump fabricated in a planar substrate is provided with a valving chamber which is communicated to a pumping chamber. The valving chamber has an inlet and outlet port. Both the valving chamber and pumping chamber have a liquid, electrically conducti... | 06/05/2001 |
| 4961688 | Process and apparatus for pumping and metering a liquid product with a melting point between 200 and 350 degrees C. The invention relates to a process and apparatus for the pumping and metering of liquid products, wherein the melting point is between 200° and 350° C. In the process, a pulsation generator with piston and diaphragm displaces a thermal fluid which actua... | 10/09/1990 |
| 4845517 | Droplet deposition apparatus An ink jet"drop-on-demand" printer has a number of parallel channels each containing ink. A thread of mercury extends longitudinally of each channel or pair of channels and is connected for electrical current flow. A magnetic field is applied orthogonally... | 07/04/1989 |
