Quotables
"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7390176 | Multi-port suction reed valve with optimized tips A reed valve having a plurality of tips and associated recesses is provided as a compressor suction valve with each valve tip coacting with a suction port. The recesses are located in the housing structure defining the cylinder of the compressor and are spaced a dis... | 06/24/2008 |
| 7101156 | Method and apparatus for controlling a pumping unit Method and apparatus for reducing the pumping duty cycle of a pump assembly associated with an oil, natural gas, or water well with a concomitant reduction in the wear associated with the pump down hole components. An engine is connected with a pump assembly through... | 09/05/2006 |
| 7090473 | Multiple stage pump with multiple external control valves A multiple stage pump having valves downstream from each respective pump in a same line thereof. The respective lines then merge into a common line. The multiple stage pump prevents pressure variations and shot to shot fuel variations. ... | 08/15/2006 |
| 7083400 | Valve arrangement for a small hermetic compressor A suction and discharge valve arrangement for a small hermetic compressor of the type presenting a compression cylinder (1), which has an end closed by a valve plate (10) and which has a suction pipe (5) adjacent to the valve plate (10) a... | 08/01/2006 |
| 7052253 | Seal and bearing-free fluid pump incorporating a passively suspended self-positioning impeller A novel fluid pump includes a stator body defining a pumping chamber and an impeller operationally disposed within the chamber. The impeller has opposed ends with a central axis defining an axis of rotation. Passive magnetic bearing sets are positioned along the imp... | 05/30/2006 |
| 7004731 | Diaphragm pump having a gas venting surface A scarred surface structure on the cover curvature of a diaphragm compressor is created by shot blasting. The scarred surface structure hinders the sealing effect between the cover curvature and the diaphragm and thereby counteracts the formation of gas cushions. | 02/28/2006 |
| 6979184 | Manual negative pressure pump device A manual negative pressure pump device comprises a suction cylinder, a handle, a pull, a piston, and an expandable spring which forms a vacuum absorbing device. A front end of the suction cylinder is a thread post with outer thread. The thread post has a central thr... | 12/27/2005 |
| 6966760 | Reciprocating fluid pump employing reversing polarity motor A reciprocating pump includes a drive section and a pump section. The drive section has a reciprocating coil assembly to which alternating polarity control signals are applied during operation. A permanent magnet structure of the drive section creates a magnetic flu... | 11/22/2005 |
| 6964559 | Two shaft vacuum pump with cantilevered rotors A vacuum pump (1) comprising a pump chamber casing (5) accommodating two co-operating rotors (2, 3) which are respectively arranged on a shaft (8, 9). A bearing/gear chamber (6) is disposed adjacent to the pump chamber casing (5... | 11/15/2005 |
| 6948916 | Piping layout for multiple compressor system A multiple hermetic compressor assembly comprising a first compressor and an adjacent, second compressor interconnected by a hot gas pressure discharge manifold, a suction gas pressure equalization manifold, a suction manifold and an oil equalization manifold, the m... | 09/27/2005 |
| 6948917 | Valving system for a downhole hydraulically actuated pump An engine for actuating a hydraulic downhole pump having a piston vertically reciprocated in a cylinder includes a reversing valve carried with the power piston and serving, when in a first position, to direct fluid flow to force the piston upwardly and in a second ... | 09/27/2005 |
| 6945761 | Fluid apparatus having downwardly inclined lower lamella portion of a bellows A bellows that is extendingly and contractingly deformable in the axial direction is placed in a pump body and forms a liquid chamber inside the bellows. A suction portion and a discharge portion are formed in an inner bottom face of the pump body facing the liquid ... | 09/20/2005 |
| 6945763 | Geared pump with forced lubricated coupling A geared feed pump has a housing having a pump chamber in which a rotationally driven pair of gear wheels meshing with one another is disposed for pumping medium out of a suction chamber that communicates with a supply tank, along feed conduits, formed between the c... | 09/20/2005 |
| 6942470 | Motor pump system with axial through flow utilizing an incorporated flowmeter and pressure controller Motor pump system includes an electromagnetic motor comprising a main body, a coil, and a movable hollow free piston. A flow meter is coupled to one end of the electromagnetic motor. A cylinder block is coupled to another end of the electromagnetic motor. At least t... | 09/13/2005 |
| 6942468 | Portable hydraulic pump unit The invention relates to a portable hydraulic pump unit (1) comprising a housing (2), a pump (5), a drive motor (6) for the pump (5), in particular in the form of an electric drive motor, in addition to a reservoir (13) for ... | 09/13/2005 |
| 6942471 | Electric fan with strain relief connection A fan has a hub and a fan housing connected to the hub. The fan housing delimits an air passage of the fan outwardly. A fan wheel is connected to the hub and rotatably arranged in the air passage. A motor is arranged on the hub for driving the fan wheel. An electric... | 09/13/2005 |
| 6942469 | Solenoid cassette pump with servo controlled volume detection Servo controlled solenoids provide actuation of a pump piston and valves, and electronic LC resonance measurements to determine liquid volume and gas bubble volume. Third order nonlinear servo control is split into nested control loops: a fast nonlinear first-order ... | 09/13/2005 |
| 6939110 | Control system for I.C. engine driven blower A system for maintaining constant pressure, such as at a mosquito fogging nozzle, by electronically controlling the speed of an engine that is coupled to a blower. A pressure sensor measures the pressure provided by the blower and provides a pressure signal to the e... | 09/06/2005 |
| 6939114 | Dynamotor driven compressor and method for controlling the same A dynamotor capable of operating as either a motor or a generator is used with both the armature portion and the field portion thereof capable of being rotated. In the case where a pulley operatively interlocked with the output shaft of the prime mover is mounted on... | 09/06/2005 |
| 6935847 | Spontaneous inflation inhibitor for inflatable prosthesis A pump assembly for a penile implant is provided having a mechanism which prevents spontaneous inflation of the cylinders implanted within the user. The preventative mechanism uses overpressure generated by the reservoir during unintentional compression to effective... | 08/30/2005 |
| 6935848 | Discharge muffler placement in a compressor A muffler system for a compressor includes an expansion chamber muffler for attenuating sound pressure pulses and an acoustic muffler for filtering high-frequency pressure pulsations. The acoustic muffler is connected inline along the discharge side of the compresso... | 08/30/2005 |
| 6932583 | Multiple stage pump with multiple external control valves A multiple stage pump having valves downstream from each respective pump in a same line thereof. The respective lines then merge into a common line. The multiple stage pump prevents pressure variations. The multiple stage pump includes a first pump in a first stage ... | 08/23/2005 |
| 6929455 | Horizontal two stage rotary compressor A hermetic two stage rotary compressor having a housing with a stationary shaft fixedly mounted in the housing. A motor having a rotor and a stator is mounted in the housing with the rotor being rotatably mounted on the shaft. A pair of compression mechanisms are ro... | 08/16/2005 |
| 6926501 | Two-piece swashplate pump housing A housing for a hydraulic pump is provided. The pump has an input shaft connected to a swashplate, a plurality of pistons, a plurality of check valves, and a metering device having an actuator. The housing includes a first housing member having a fluid inlet, a shaf... | 08/09/2005 |
| 6926503 | Pump vibration reduction system A method and apparatus for reducing the vibration and noise from a pump that is located in an analyzer. Vibration and noise dampening materials are used to secure the pump so that the vibration and noise are kept to a minimum, thereby, making it more comfortable for... | 08/09/2005 |
| 6923627 | Air compressor with extensible handle bar assembly An air compressor assembly with one or more of the following features: a removable manifold assembly capable of being remotely located from the air compressor assembly for controlling and distributing compressed air from the air compressor assembly to one or more ai... | 08/02/2005 |
| 6916159 | Device and method employing shape memory alloy A system for the metering and delivery of small discrete volumes of liquid is comprised of a small or minimal number of inexpensive components. One such component is a movable member, such as a miniature precision reciprocating displacement pump head, which is drive... | 07/12/2005 |
| 6913449 | Apparatus for the treatment of metallic workpieces with cooling gas In an apparatus for the treatment of metallic workpieces (4) with cooling gas, having a cylindrical housing (3) with an opening at the end face for introducing and removing the workpieces (4), two support plates (6, 7) extending in parall... | 07/05/2005 |
| 6910870 | High temperature pothead The present invention provides a high temperature pothead used to provide power to a submersible motor. More specifically, the present invention provides a high temperature pothead that does not require elastomeric sealing elements. ... | 06/28/2005 |
| 6908289 | Fuel pump with automatic shutoff A pressure sensor subsystem measures the pressure within a fuel pump and outputs an under-pressure signal when the measured pressure is below a predetermined threshold pressure value. A temperature sensor subsystem measures the temperature within the fuel pump and o... | 06/21/2005 |
| 6899527 | Closed-drift hall effect plasma vacuum pump for process reactors A closed-drift Hall effect plasma vacuum pump includes one or more pumping conduits which are linked with a radial magnetic field. The magnetic field separates a plasma from a plasma at a higher pressure which is formed by cross-field plasma transport from a plasma ... | 05/31/2005 |
| 6896495 | Cylinder head and valve plate assembly for reciprocating compressor A reciprocating compressor that includes a cylinder block with a plurality of cylinder bores. A piston is positioned in each bore. Each piston is mounted to move in response to the a crankshaft, causing each piston to reciprocate within the cylinder bore. The compre... | 05/24/2005 |
| 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 |
| 6884045 | Hydraulically powered diaphragm pump with pretensioned diaphragm A hydraulically driven diaphragm pump with a diaphragm clamped at its edge between a pump body and a pump cover separating a delivery chamber from a hydraulic chamber and pretensioned in the direction of its intake stroke by spring force. A hydraulic diaphragm drive... | 04/26/2005 |
| 6884043 | Fluid circulation path for motor pump A fluid pump includes a pump head having an inlet for receiving fluid at a first pressure and an outlet for outputting fluid at a second pressure greater than the first pressure. Pressurized fluid is directed through a first passage to the outlet without the pressur... | 04/26/2005 |
| 6881042 | Reciprocating compressor having reduced vibration A reciprocating compressor includes: a reciprocating motor, an outer stator and an inner stator provided with at least one step portion at both sides thereof, and an armature linearly moving therebetween; a compression unit having a cylinder and a piston inserted in... | 04/19/2005 |
| 6881043 | Injection apparatus incorporating clamping and squeezing members for pumping liquid through flexible tubing A piston pump propels liquid through a lumen of a flexible tube segment. The pump includes a first tube clamping member, a first set of tube squeezing members, a second tube clamping member, a second set of tube squeezing members and a synchronizing arrangement for ... | 04/19/2005 |
| 6877964 | Multifunction microfluidics device Apparatus for inducing, impeding, selectively filtering or otherwise effecting fluid flow in microfluidics applications. Opposing mesh layers are placed into relative motion by a variety of motive forces. Fluid between the opposing mesh layers is compressed so as to... | 04/12/2005 |
| 6877962 | Dishwasher pump mounting assembly A dishwasher pump mounting assembly is provided, and includes a pump mounting plate which is supported by the bottom wall of the dishwasher tub and extends through a hole in the bottom wall. A plurality of locking members secure the pump mounting plate to the bottom... | 04/12/2005 |
| 6874994 | Hydraulic pump and motor A hydraulic unit has a drive shaft (52) mounted in a manifold block (54) and coupled to a torque plate (80) on a central axis. A bent axis motive unit (60) has a yoke connected to the manifold block supported for rotation on the yoke. Hol... | 04/05/2005 |
