Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7641449 | Air compressor having a controller for a variable speed motor and a compressed air tank For a motor that drives a compressed air generator, three operating modes which includes a powerful mode for rotating a motor in a high speed range, a silent mode for rotating the motor in a low speed range, and an automatic mode for automatically changing the rotat... | 01/05/2010 |
| 7611331 | Device and method for controlling a two cylinder thick matter pump A device and a method for controlling a two-cylinder thick matter pump comprising pistons that are actuated in a push-pull manner by means of a hydraulic reversible pump (6) and hydraulic drive cylinders controlled by said pump. To ensure a reliable operation... | 11/03/2009 |
| 7393185 | 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... | 07/01/2008 |
| 7363109 | Backlash compensation control method, backlash compensation controller and backlash compensation control program To allow a robot performing a cyclic movement upon receipt of a driving force transmitted through a driving force transmission system from a driving source along with a backlash to perform the movement compensated for the backlash, during a first period within a cyc... | 04/22/2008 |
| 7354511 | Hydraulic unit for industrial trucks A hydraulic unit for industrial trucks, comprising a motor pump unit which is directly attached to a tank, a reflux filter which has an elongate filter casing for a filtering element adapted to be introduced into the tank through an opening, a hose coupling, and an ... | 04/08/2008 |
| 7354190 | Two-stage mixing system, apparatus, and method A two-stage mixing system, apparatus, and method produces a solution including a first substance and a second substance in a predetermined ratio by first mixing the first substance with a first liquid to produce a first solution and then mixing the first solution wi... | 04/08/2008 |
| 7347255 | Device for detecting water in product-only pump flow stream A device for detecting the presence of water in a product-only hydrocarbon pump system particularly used for the removal of subterraneous hydrocarbons from a remediation site through a well. The device comprises a sealed float switch chamber, positioned either upstr... | 03/25/2008 |
| 7338464 | Non-constant pressure infusion pump The present invention relates to an implantable infusion pump having a refillable infusate reservoir in fluid communication with a delivery site via a flow path. This flow path includes a flow resistance. The infusion pump includes a sensing device(s), positioned re... | 03/04/2008 |
| 7338260 | System and method for controlling current provided to a stepping motor A system and method is disclosed for controlling the input electrical current to an infusion pump stepper motor based on predetermined torque requirements. The system can include a motor controller and a non-volatile memory containing expected load torque values thr... | 03/04/2008 |
| 7331773 | Pump provided with exhaust valve device and hemodynamometer incorporating the same A diaphragm is provided in a pump case so as to define a pump chamber communicated with an external member having an air chamber. A motor actuates the diaphragm to introduce air into the pump chamber and to supply the introduced air to the air chamber. An exhaust va... | 02/19/2008 |
| 7331766 | Compressor In a compressor for gaseous media, in particular, refrigerants, comprising a housing, a drive shaft mounted in the housing, at least one compressor unit arranged in the housing and driven by the drive shaft, and an oil lubricating device for supplying bearing areas ... | 02/19/2008 |
| 7330779 | Method and system for improving pump efficiency and productivity under power disturbance conditions A system for controlling operation of a progressing cavity pump to maintain the motor operating under power disturbance conditions. For a blackout condition, a backspin controller uses regenerative power to provide controlled deceleration of the pump, counteracting ... | 02/12/2008 |
| 7327045 | Fuel delivery system and method providing regulated electrical output In a mobile fuel delivery vehicle, providing bulk aircraft fuel from a pressurized fuel reservoir to an aircraft, a method of regulating electrical output of an electrical power source, includes the steps of: (a) receiving, in a fluid path, the bulk aircraft fuel fr... | 02/05/2008 |
| 7326038 | Pressure switch mechanism and air compressor using the same mechanism An air compressor comprises a tank portion for reserving a compressed air, a compressed air generating portion for generating the compressed air to be supplied to the tank portion, a motor for driving the compressed air generating portion, and a pressure switch mech... | 02/05/2008 |
| 7323852 | Sensing load tap changer (LTC) conditions A load tap changer (LTC) having a plurality of windings is coupled to one of the primary and secondary of a power transformer in order to regulate the output voltage of the transformer. The LTC includes a plurality of taps physically and electrically connected to an... | 01/29/2008 |
| 7321211 | Power variation control system for cyclic loads A method and apparatus for managing power demand of a motor in a cyclic load system having a rotational mass is provided. Flat power draw is achieved through continuous manipulation of the motor torque as a function of feedback velocity while using the rotational ma... | 01/22/2008 |
| 7316542 | Fluid level control system A control system governs fluid level in a well system including a pump positioned downhole for pumping fluid upward through a tubular, a rod positioned within the tubular for driving the pump, a prime mover, and a pumpjack to transmit power from the prime mover to t... | 01/08/2008 |
| 7314039 | Method of controlling operation of a liquid-fuel combustion appliance A method of controlling operation of a liquid-fuel combustion appliance. The method is characterized by including an “antiseize operating mode” in which an electric motor and a fuel pump, powered by the electric motor, are started periodically to prevent oxidati... | 01/01/2008 |
| 7310965 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 12/25/2007 |
| 7300257 | Prevention of unpowered reverse rotation in compressors The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor. Prior to terminating electric power to the compressor driv... | 11/27/2007 |
| 7276870 | Arrangement for overload protection and method for reducing the current consumption in the event of mains voltage fluctuations The arrangement as overload protection for the mains voltage (U) comprises an electric motor (1), a compression unit having a compressor (2), a mains voltage-monitoring unit (3), a device for reducing the load on the motor (1) and a contr... | 10/02/2007 |
| 7267531 | Current monitoring system and method for metering peristaltic pump A pump system includes a peristaltic pump having a rotor, a motor and a controller. The motor is configured to drive the peristaltic pump so as to deliver a liquid product from a source to a receiving location. The controller monitors a drive current of the motor so... | 09/11/2007 |
| 7252483 | Method of managing time, at which maintenance in a gas compressor multiple system should be carried out The method of managing time M, at which maintenance of a gas compressor multiple system incorporating therein a plurality of gas compressors should be carried out, involves making a comparison between a value of M and a predetermined time N for necessary maintenance... | 08/07/2007 |
| 7246662 | Systems and methods for controlling flow control devices A device for determining a location of an interface between a first fluid and second fluid includes a non-mechanical sensor that measures a selected parameter of interest relating to the fluid surrounding the sensor (“the surrounding fluid”) and a processor for ... | 07/24/2007 |
| 7232225 | Projection type display device A cooling system for an area around a lamp that accounts for a good part of an amount of heat generated by the projection type display device is isolated from a cooling system for other parts including a liquid crystal panel. Means is further provided of allowing th... | 06/19/2007 |
| 7228694 | Cooling control system for an ambient to be cooled, a method of controlling a cooling system, and a cooler A cooling system for cooling an ambient to be cooled, a cooler and a method of controlling a cooling control system are described. The cooling control system comprises a variable capacity compressor and a controller, the controller measuring the load of the compress... | 06/12/2007 |
| 7222493 | Compressor diagnostic system A system and method for diagnosing and protecting a compressor includes a sensor, logic circuitry, a motor protector and an intelligent device. The logic circuitry is associated with the sensor and the motor protector and operable to determine a trip frequency of th... | 05/29/2007 |
| 7223766 | Bi-cyclic pyrimidine inhibitors of TGFβ Compounds in which a pyrimidine nucleus is bridged at the 5 and 6 position and are further substituted at positions 2 and 4 with substituents comprising aromatic moieties are useful in treating subjects with rheumatoid arthritis ameliorated by inhibition of TGFβ ac... | 05/29/2007 |
| 7221282 | Wireless wastewater system monitoring apparatus and method of use A wireless wastewater system monitoring apparatus generally comprising a processor/transceiver unit, housed within a synthetic protective enclosure formed outside of the wastewater system, and a fluid level sensor configured to send an overflow signal to the process... | 05/22/2007 |
| 7214364 | Inhalable aztreonam lysinate formulation for treatment and prevention of pulmonary bacterial infections A method and a composition for treatment of pulmonary bacterial infections caused by gram-negative bacteria suitable for treatment of infection caused by Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca, Pseudomonas aeruginosa, Haemophilus influenzae, ... | 05/08/2007 |
| 7195607 | Programmable, fluid pressure actuated blood processing systems and methods Programmable, fluid pressure actuated blood processing systems and methods are used in association a blood separation device. The systems and methods employ a cassette, which contains several preformed, pneumatically actuated pump stations, several preformed fluid f... | 03/27/2007 |
| 7185516 | Washwater neutralization system for glass forming line A neutralization system for controlling the pH of the washwater used to clean and maintain polyacrylic bound glass forming equipment. The neutralization system introduces a base solution to a washwater solution when the pH of the washwater solution contained in a cl... | 03/06/2007 |
| 7183741 | Switch assembly, electric machine having the switch assembly, and method of controlling the same A pump assembly for pumping a liquid and a method of controlling the pump assembly. The pump assembly includes a motor coupled to a pump, and an electronic switch assembly electrically connected to the motor to control the current through the motor. The electronic s... | 02/27/2007 |
| 7184249 | Electric motor circuit with overload protection An electric motor circuit utilized, for instance, for adjusting a wing mirror of a vehicle is provided with a motor with a driving circuit. The driving circuit includes a relay switch element included in series with the motor and a protecting circuit for bringing th... | 02/27/2007 |
| 7179369 | Oil filter system The invention relates to an oil filter installation for cleaning or cleaning and dessication of the oil in a tap changer at a power transformer or a plunger core coil, wherein a measuring device for detecting the volume flow of the throughflowing oil is provided and... | 02/20/2007 |
| 7165947 | Screw compressor capable of manually adjusting both internal volume ratio and capacity and combined screw compressor unit accommodating variation in suction or discharge pressure A screw compressor is equipped with a manually operated internal volume ratio adjusting slide valve and capacity adjusting slide valve. The compressor is simple in construction, can be produced with low cost, can accommodate decrease in suction pressure, for example... | 01/23/2007 |
| 7159412 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 01/09/2007 |
| 7161315 | Self dust-off apparatus and method thereof A self dust-off apparatus includes a fan and a controller. The fan, which can be driven to rotate clockwise or counterclockwise, is installed in a projector. The controller is employed to direct the rotational direction (clockwise or counterclockwise) of the fan. In... | 01/09/2007 |
| 7156983 | Swimming pool backwash assembly A swimming pool backwash control arrangement includes a timing device incorporated with a valve for controlling normal re-circulating flow and backwash flow through a swimming pool filter. The timer is constructed to be in series with the electric power circuit to t... | 01/02/2007 |
| 7138419 | Process for manufacturing bulk solutions and a lyophilized pure α-aztreonam lysinate A process for manufacturing bulk solutions and lyophilized pure α-aztreonam lysinate for large scale production of an inhalable aztreonam is disclosed, as is a pure α-aztreonam lysinate for inhalation. A dry powder or lyophilized pure α-aztreonam lysinate composi... | 11/21/2006 |