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Class Information
Number: 417/32
Name: Pumps > Condition responsive control of pump drive motor > Responsive to pump or pump fluid temperature
Description: Subject matter in which the condition sensed is a change in the temperature of either the pump or the fluid being moved by the pump.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8662858 Generating a PWM signal dependent on a duty cycle having a piecewise linear relationship with temperature Mar. 4, 2014
8657918 Cyclic adsorption process using centrifugal machines Feb. 25, 2014
8628309 Turbomolecular pump device and controlling device thereof Jan. 14, 2014
8622716 Oil-cooled air compressor Jan. 7, 2014
8539786 System and method for monitoring overheat of a compressor Sep. 24, 2013
8491280 Oil-flooded screw compressor, motor drive system, and motor control device Jul. 23, 2013
8483932 Fuel delivery system control strategy Jul. 9, 2013
8459957 Water-injected compressor Jun. 11, 2013
8425198 Air compressor Apr. 23, 2013
8419364 Fan with an arrangement of detecting degradation of the bearings Apr. 16, 2013
8403648 Compressor control device and method for controlling a compressor Mar. 26, 2013
8398376 Dry pumps Mar. 19, 2013
8375936 Method and system for operating a thermal solar system using a reverse motor configuration Feb. 19, 2013
8348624 Efficiency optimized air flow apparatus and method Jan. 8, 2013
8342810 Start-up control device and method for electric scroll compressor Jan. 1, 2013
8327873 Temperature back flow control valve Dec. 11, 2012
8328525 Electric compressor and control device for estimating compressor discharge temperature Dec. 11, 2012
8317484 Oil-injected compressor with a temperature switch Nov. 27, 2012
8313304 On-demand on-off water pump assembly Nov. 20, 2012
8308439 Method and apparatus for resisting disabling fouling of compressors in multistage compression systems Nov. 13, 2012
8297936 Compensating temperature-induced errors during piston movement Oct. 30, 2012
8282360 Pneumatically operated reciprocating pump Oct. 9, 2012
8252250 Electroosmotic pump with improved gas management Aug. 28, 2012
8241008 RPM controller using drive profiles Aug. 14, 2012
8217614 Fan delay controlling apparatus Jul. 10, 2012
8210826 Controlled liquid injection and blending apparatus Jul. 3, 2012
8202057 Oil-free scroll compressor Jun. 19, 2012
8177521 System and method for monitoring and controlling oil return to compressor May. 15, 2012
8167577 Fuel pump device May. 1, 2012
8157536 Rotating speed adjustment circuit and related control system for a heat dissipation fan Apr. 17, 2012
8152475 Method for controlling operation of a compressor Apr. 10, 2012
8093850 Fan control system Jan. 10, 2012
8042612 Method and device for maintaining sub-cooled fluid to ESP system Oct. 25, 2011
8021130 Apparatus and method for handling fluids at nano-scale rates Sep. 20, 2011
7966839 Method and system for controlling a compressor for an HVAC module Jun. 28, 2011
7965054 Vacuum pump Jun. 21, 2011
7927079 Electrically operated hydraulic pump Apr. 19, 2011
7893178 Process for storing a monomer phase which is liquid under the conditions of storage Feb. 22, 2011
7841837 Cooling-fan rotation-speed control circuit Nov. 30, 2010
7841541 Fan having a sensor Nov. 30, 2010
7832421 System and method for making hot water available in a domestic water installation and domestic water installation Nov. 16, 2010
7808363 Overheat protection for pump Oct. 5, 2010
7708056 Fan controlling system and method May. 4, 2010
7658737 Method and apparatus to sense temperature in an implantable pump Feb. 9, 2010
7641546 Cooling apparatus and method for controlling the same Jan. 5, 2010
7621721 Vacuum pumping device with electronic control of the motor Nov. 24, 2009
7607750 Pump control mechanism, printer incorporating the same, and pump control method Oct. 27, 2009
7607895 Fluid circulation pump with synchronous motor, equipped with heating means of the fluid, in particular for washing machines Oct. 27, 2009
7568893 Electric air pump for secondary air supply system Aug. 4, 2009
7540718 Hermetic compressor Jun. 2, 2009

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