http://www.freshpatents.com/Pumps-dtnewntc417.php USPTO Class 417 - Pumps en-us Thu, 24 Jul 2008 15:06:05 -0700 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/Temperature-sensing-system-dt20080717ptan20080170947.php Thu, 24 Jul 2008 15:06:05 -0700 A temperature sensing system includes N temperature sensing circuits, each including a diode, that are connected in series, wherein N is an integer greater than one. A control module includes a first terminal that communicates with one of the N temperature sensing circuits, that receives a combined voltage of the... http://www.freshpatents.com/Multi-stage-compressor-driver-system-and-method-of-operation-dt20080717ptan20080170948.php Thu, 24 Jul 2008 15:06:05 -0700 An improved system and methodology for starting up a gas-turbine driven multi-stage compressor. The improvement involves isolating individual compression stages and creating positive pressure in each stage prior to initiating rotation of the compressor/driver system. The isolation of individual compression stages allows the turbine to reach normal operating speeds with... http://www.freshpatents.com/Manually-operated-vacuum-pump-and-refill-device-dt20080717ptan20080170949.php Thu, 24 Jul 2008 15:06:05 -0700 A manually operated vacuum pump and refill device includes a body on top with a vacuum pump attached, and a lower portion of the body is arranged with an elastic adapter. The adapter has a central channel in communication with the body. The body includes an inlet in which a... http://www.freshpatents.com/Rotary-pump-dt20080717ptan20080170950.php Thu, 24 Jul 2008 15:06:05 -0700 A rotary pump for producing a pressure medium flow for a consumer, includes a pump housing in which a curved ring is inserted. A rotor is rotatably borne on a drive shaft in the curved ring. The rotor carries displacement elements at a tangential distance to one another which form... http://www.freshpatents.com/Piezoelectric-pump-dt20080717ptan20080170951.php Thu, 24 Jul 2008 15:06:05 -0700 A piezoelectric pump includes a piezoelectric vibrator whose periphery is fluid-tightly sealed, and a pump chamber and an air chamber that are formed on front and rear sides of the piezoelectric vibrator. The piezoelectric pump vibrates the piezoelectric vibrator to perform a pumping operation. The piezoelectric vibrator includes: a shim... http://www.freshpatents.com/Hermetic-compressor-dt20080717ptan20080170952.php Thu, 24 Jul 2008 15:06:05 -0700 A hermetic compressor includes a compressing device and a drive motor connected to the compressing device. The drive motor has a stator with a stator coil made of aluminum wire and an insulating layer disposed on an outer surface of the aluminum wire. The aluminum wire has a diameter between... http://www.freshpatents.com/Combination-compressor-and-vacuum-pump-apparatus-and-method-of-use-dt20080717ptan20080170953.php Thu, 24 Jul 2008 15:06:05 -0700 A combination compressor and vacuum pump apparatus comprising a common drive mechanism, a compressor piston-cylinder unit mechanically coupled to the drive mechanism, the compressor piston-cylinder unit comprising a hollow first piston rod connected to the drive mechanism at a first free end substantially opposite a first piston operable within a... http://www.freshpatents.com/Cylinder-assembly-for-providing-uniform-flow-output-dt20080717ptan20080170954.php Thu, 24 Jul 2008 15:06:05 -0700 An assembly in accordance with an embodiment of the present invention for providing a substantially uniform output flow from at least one piston of a pump powered by a prime mover includes at least a first power piston disposed in a cylinder and reciprocatingly movable within the cylinder between an...