Did You Know...
...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8186967 | Fail-safe control method for oil pump control unit of hybrid vehicle A fail-safe control method for an oil pump control unit of a hybrid vehicle directly connects an automatic transmission control unit and an oil pump control unit via a hard wire to control an oil pump driver in the event of a failure of the CAN communication line of... | 05/29/2012 |
| 8172546 | System and method for correcting for pressure variations using a motor Systems and methods for compensating for pressure increase which may occur in various enclosed spaces of a pumping apparatus are disclosed. Embodiments of the present invention may compensate for pressure increases in chambers of a pumping apparatus by moving a pump... | 05/08/2012 |
| 8118564 | Motor-driven compressor A motor-driven compressor includes a compression mechanism for compressing a refrigerant gas, an electric motor, an inverter assembly and an inverter chamber. The electric motor drives the compression mechanism. The inverter assembly converts direct-current power in... | 02/21/2012 |
| 8079825 | Sensor-less control method for linear compressors A method of protecting a cylinder of a compressor comprising a piston, a linear permanent magnet (PM) having a coil and a magnet, and a sensor-less control of the PM for moving the piston in and out of the cylinder. The method including the steps of receiving a refe... | 12/20/2011 |
| 8070456 | Method for preventing power surge in a compressor supplied by a power converter by direct torque control A method for operation of a compressor supplied by a power converter having an operating condition (BV) for the compressor (12) supplied by a power converter, generated from a measured actual rotational speed (n) of the compressor and a given effec... | 12/06/2011 |
| 8057190 | Method and control unit for operating a linear compressor A control unit for a linear compressor comprises a current sensor for detecting the current consumption of the linear compressor, a deflection sensor for detecting the deflection of the linear compressor and a control circuit for controlling the movement and detecti... | 11/15/2011 |
| 8043070 | Speed control A pumping system for moving water of a swimming pool includes a water pump, an infinitely variable speed motor, and an arrangement for operating the motor. In one example, the pumping system includes a memory configured to store a plurality of retained speed values,... | 10/25/2011 |
| 8033795 | Linear motor, a linear compressor, a method of controlling a linear compressor, a cooling system, and a linear compressor controlling a system A linear motor (10), a linear compressor (100), a method of controlling a linear compressor (100), a cooling system (20) and a system of controlling a linear compressor (100) to operate a linear compressor (100) in resonance... | 10/11/2011 |
| 8025486 | System and method for valve sequencing in a pump Systems and methods for minimizing pressure fluctuations within a pumping apparatus are disclosed. Embodiments of the present invention may serve to reduce pressure variations within a fluid path of a pumping apparatus by avoiding closing a valve to create a closed ... | 09/27/2011 |
| 7798782 | Apparatus and method for controlling operation of reciprocating compressor An apparatus and method for controlling an operation of a reciprocating compressor are disclosed. The apparatus for controlling an operation of a reciprocating compressor includes: a TDC/BDC detecting unit for detecting a TDC and a BDC of the reciprocating compresso... | 09/21/2010 |
| 7704051 | Pump controller system and method A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when s... | 04/27/2010 |
| 7686589 | Pumping system with power optimization The present invention provides a pumping system for moving water of a swimming pool, including a water pump and a variable speed motor. In one example, a target volume amount of water and an operational time period is provided, and the operational time period is alt... | 03/30/2010 |
| 7637723 | Cavitation detection device and method Cavitation detection systems and methods include generating a signal representing the power factor of a motor driving a pump, analyzing the power factor signal and determining the presence of cavitation based on the analysis of the power factor signal. The power fac... | 12/29/2009 |
| 7607896 | Systems and methods for power ride-through in variable speed drives Systems and methods for providing ride-through for interruptions in the power supplied to drives that are used to control equipment such as downhole submersible pumps. In one embodiment, a variable speed drive includes converter and inverter sections, a capacitor ba... | 10/27/2009 |
| 7547197 | Driving controlling apparatus for linear compressor and method thereof A driving controlling apparatus for a linear compressor, comprises a controlling unit for detecting a TDC by a phase difference inflection point between a stoke and a current with increasing the stroke by controlling the current applied to a linear motor, and for va... | 06/16/2009 |
| 7513752 | Beam pump dynamic load monitoring and methods A pump monitoring system includes a monitoring device configured for attachment to a cable harness of a pump, a strain gauge configured to measure dynamic loading of at least one cable of the cable harness as the pump operates, a wireless transmitter configured to t... | 04/07/2009 |
| 7491034 | Compressor protection and diagnostic system A system includes a compressor having a shell and a motor disposed within the shell. A first sensor is provided for monitoring a discharge temperature of the compressor, a second sensor is provided for monitoring a temperature of the motor, and a third sensor is pro... | 02/17/2009 |
| 7481627 | Air compressor tools that communicate with an air compressor An air compressor utilizing an electronic control system. A pneumatically controlled regulator is provided for controlling output pressure for an air compressor. Digital gauges are provided on the air compressor to replace conventional mechanical gauges. A variable ... | 01/27/2009 |
| 7467927 | Pumping arrangement A pumping arrangement for a paint circulation system comprising a reciprocating pump (13), and characterized by an alternating current induction motor (15), a rotary-to-linear motion converter (16) coupling the output of the induction motor (... | 12/23/2008 |
| 7442014 | Fluid transfer system and method for transferring fluid A fluid transfer systems described herein. The fluid transfer system generally includes a centrifugal multistage pump, a holding tank for holding the fluid operably connected to the pump body via a first conduit, an inlet for receiving the fluid, wherein the fluid i... | 10/28/2008 |
| 7444070 | Fan motor with digital controller for applying substantially constant driving current An improved fan arrangement features a radial or diagonal fan (370) with which a direct current motor (32) is associated as its drive motor, further comprising a digital control element (23, 24) which executes a program, for controlling the curr... | 10/28/2008 |
| 7431568 | Draft inducer having a backward curved impeller A draft inducer is disclosed. The draft inducer includes an impeller having one or more backward curved blades. The impeller is coupled to a motor which is preferably a DC motor. The DC motor resides at the center of the impeller and is housed within the impeller st... | 10/07/2008 |
| 7413411 | Electronically controlled vacuum pump A vacuum system comprises, as an integral assembly, a vacuum pump with drive motor, a purge valve, a roughing valve and an electronic control module. A cryogenic vacuum pump and a turbomolecular vacuum pump are disclosed. The control module has a programmed processo... | 08/19/2008 |
| 7409997 | Electric submersible pump with specialized geometry for pumping viscous crude oil A centrifugal pump has impellers for pumping low flow, high viscous materials. The impellers have high exit angles greater than 30 degrees and preferably greater than 50 degrees. The impellers and diffusers have specific geometry that varies with viscosity. The pump... | 08/12/2008 |
| 7408310 | Apparatus for controlling driving of reciprocating compressor and method thereof Disclosed are an apparatus for controlling a driving of a reciprocating compressor capable of enhancing an efficiency by differently controlling a frequency and a stroke voltage according to a load size and capable of reducing consumption power, and a method thereof... | 08/05/2008 |
| 7405529 | System and method for controlling linear compressor A system for controlling a linear compressor, generates freezing force as a piston reciprocates according to rotation of a motor which receives alternating current power through a triac. The system includes a controller which moves up or delays a trigger signal corr... | 07/29/2008 |
| 7402977 | Apparatus and method for controlling operation of reciprocating motor compressor An apparatus for controlling an operation of a reciprocating motor compressor includes a current integrator for integrating an alternating current applied to a motor of the compressor during each one cycle thereof; and a controller for differently controlling a firi... | 07/22/2008 |
| 7387500 | Hydro elastic pump which pumps using non-rotary bladeless and valveless operations A pump formed from an asymmetric tube, which is pinched to form asymmetric forces, that pump fluid. ... | 06/17/2008 |
| 7388463 | Electromagnetic coil assembly employing spool-spindle An electromagnetic coil assembly comprising a spool-spindle and a case. The spool-spindle comprises a spindle portion and a larger included portion. The spindle portion has a conductor wound thereon. The larger included portion has opening for receiving the conducto... | 06/17/2008 |
| 7385368 | Apparatus for controlling operation of reciprocating compressor An apparatus for controlling an operation of a reciprocating compressor includes a inductance increasing device connected to a motor of the reciprocating compressor, so that a surge current generated when power is applied to the reciprocating compressor at an initia... | 06/10/2008 |
| 7369920 | Pressure control system with optimized performance A pressure control system for controlling pressure of a fluid in a chamber includes a pressure sensor configured to measure the pressure of the fluid in the chamber, and a valve configured to control the pressure of the fluid in the chamber by regulating flow of the... | 05/06/2008 |
| 7365277 | Buffer assembly for a pressure sensitive switch A buffer assembly includes a housing adapted to sealingly connected to the pressure switch and defining therein a chamber and an airway defined in a bottom face of the housing to communicate with an interior of the housing so as to communicate with an inlet of the p... | 04/29/2008 |
| 7362550 | Electric motor comprising a temperature monitoring device Disclosed is an electric motor comprising a temperature monitoring device which is provided with at least two temperature sensors that have different temperature characteristics and are connected to terminal clamps by means of electrical wires, whereby it is possibl... | 04/22/2008 |
| 7350399 | Leakage detecting device for evaporating fuel processing apparatus A leakage detecting device is connected to an evaporating fuel processing apparatus to detect leakage of evaporating fuel in a ventilation apparatus that includes an electric pump, a fuel tank, and a filter. The electric pump includes a pump portion and a motor port... | 04/01/2008 |
| 7352094 | Equipment fan An improved fan useful for ventilating applications in motor vehicles features a modular structure, which facilitates quick replacement of any components likely to fail. A first module (110) is intended for permanent installation on the part that is to be coo... | 04/01/2008 |
| 7352142 | Apparatus and method for controlling stroke of reciprocating compressor An apparatus for controlling an operation of a reciprocating compressor includes a voltage detecting unit for detecting a positive half-wave voltage of an AC voltage applied to a motor of the reciprocating compressor; a current detecting unit for detecting a positiv... | 04/01/2008 |
| 7349814 | Measurement method and arrangement The invention relates to a method and an arrangement for measuring a liquid flow in connection with a pump system. The invention is preferably implemented in a pump system where the pump (240) is driven by an alternating-current motor (230), whose rota... | 03/25/2008 |
| 7341432 | Apparatus and method for controlling operation of reciprocating compressor An apparatus and a method for controlling operation of a reciprocating compressor is capable of reducing a stroke estimation error by eliminating an error that occurs due to resistance and inductance of a compressor motor by estimating a stroke with a counter electr... | 03/11/2008 |
| 7338031 | Faucet structure with automatic cold-water resuming function The present invention provides an improved faucet structure with cold-water resuming device, which is placed at the top of the faucet valve body and has an action component and an elastic component. The action component is connected with the elastic component via a ... | 03/04/2008 |
| 7336455 | System and method for proactive motor wellness diagnosis The present invention is directed to a power meter or overload relay including a housing and a plurality of sensors configured to monitor operation of a motor. A processor disposed within the housing and configured to receive operational feedback from the plurality ... | 02/26/2008 |
