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9016312 Fluid flow control apparatus for hydraulic pump of construction machine  
An apparatus for controlling the flow of a hydraulic pump of a construction machine according to the present disclosure includes: a pressure sensor detecting pressure signals corresponding to...
8989906 Method and device for regulating fluid pump pressures  
A method is provided for regulating fluid pump pressures by detecting an elevation differential between a fluid flow control device and the distal end of a fluid line in communication with the...
8935009 Method and apparatus for controlling multiple variable displacement hydraulic pumps  
A method and apparatus for controlling discharge pressure and pump displacement of a plurality of variable displacement hydraulic pumps having connected discharge ports is provided. Each pump...
8926291 Speed control for diaphragm pump  
A liquid pump control system for dry run avoidance and re-prime detection. Pump dry run conditions can be detected with improved sensitivity by measuring pump cycle speed. Pump cycle speed is...
8876488 Positive air shut off device for bag-in-box pump  
The present invention provides a device for turning off a pump. In operation, when the device is activated there is vacuum pressure in a syrup chamber. A diaphragm acting in response to the vacuum...
8777592 Dispensing pump having piston assembly arrangement  
A pump includes a pump body defining a fluid chamber and inlet and outlet ports in fluid communication with the fluid chamber, an inlet check valve connected to the inlet port, an outlet check...
8733460 Method and apparatus for providing a pressurized liquid in the absence of electricity  
An method and apparatus for disbursing a pressurized liquid in the absence of electricity are disclosed. The method and apparatus for disbursing a pressurized liquid in the absence of electricity...
8721297 Multistage pulsating airlift pump  
The multistage pulsating airlift pump includes a lowermost air injector stage and at least air injector stage above the lowermost stage installed in a lift pipe. Each stage includes a...
8696323 Method for determining the delivery rate of a liquid conveying device  
The present disclosure relates to a method for determining the delivery rate of a liquid conveying device, in particular a concrete pump, wherein on the basis of measured values concerning the...
8640644 Powder spray coating method and device therefor  
A powder spraycoating method and powder spraycoating equipment. A dense phase powder pump is used. According to a predetermined conveying-air function in a control unit, different rates of...
8636477 Chemical supply system  
This invention provides a chemical supply system for supplying chemical solution from a chemical tank. The chemical supply system includes a chemical supply pump, a pressure adjuster configured to...
8632316 Air motor having drop tube with knuckle ends  
An air motor for a pump assembly including a drop tube communicating between an upper chamber port and a top plate port and including a longitudinal axis that is at an angle of between about 0°...
8632317 Air motor having a modular add on regulator  
A pump assembly including an air motor includes a pressure regulator assembly connected to a motive fluid inlet of the air motor. The pressure regulator assembly has a housing that contains an...
8632315 Air motor having ceramic valves  
An air motor includes ceramic valves and valve plates to enhance performance and efficiency of the air motor.
8579595 Cooling device for construction machinery  
A cooling device of a construction machine according to the present invention includes: two or more hydraulic motors that rotate positively and reversibly to correspond to a supplying direction of...
8562308 Regenerative hydraulic lift system  
A hydraulic cylinder assembly for a fluid pump including a cylinder, a bearing attached to an approximate first end of the cylinder, a rod slideably mounted within the bearing, and a piston...
8550790 Vacuum generator, driven by high-pressure air, and having means arranged therewith for the active release of an object that is gripped in a vacuum-gripper  
A vacuum generator driven by compressed air and arranged to supply vacuum to a vacuum gripper element, wherein a chamber (6) is associated with the vacuum generator and arranged to be brought in...
8523533 Constant horsepower regenerative assist for a hydraulic rod pumping unit  
A hydraulic rod pumping unit (12) has a constant horsepower regenerative assist featuring downstroke energy recovery. The pumping unit (12) has a hydraulic ram (26) connected to a ram pump (18)....
8500413 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...
8480376 Device, computer program product and computer-implemented method for backspin detection in an electrical submersible pump assembly  
A system for determining whether a motor in an electrical submersible pump is backspinning is described herein. The system comprises a sensor mounted in a well bore proximate to a ground surface,...
8459959 Control device of hydraulically driven fan  
Disclosed is a control device of a hydraulically driven fan. The control device of a hydraulically driven fan is characterized by comprising first command value calculation means for calculating a...
8430640 Powder spray coating device and powder transport device therefor  
A powder feed apparatus for a powder spraycoating equipment includes a dense phase powder pump fitted with at least two feed chambers, alternatingly discharging coating powder. Each feed chamber...
8403649 Digital control device  
A digital control system for monitoring and controlling a concrete pumping system. A microcontroller provides control signals and receives feedback from associated comparator switch subsystems....
8382445 Air logic controller  
An air logic controller for increasing the efficiency of an air operated double diaphragm pump. The air logic controller may increase the efficiency of the pump by controlling the supply of...
8376716 Multi-pump sequencing  
A pump system for pumping a viscous material that includes N positive displacement pumps, where N is an integer greater than two, and a hydraulic drive. Each pump has an inlet and an outlet...
8292600 Control system for an air operated diaphragm pump  
The present invention includes methods and apparatuses for operating and controlling AOD pumps (10, 10′, 10″, 100, 460, 580, 740) and other pumps.
8282360 Pneumatically operated reciprocating pump  
A pneumatically operated reciprocating pump comprises two opposed pumping chambers, in each one of which a respective flexible bellow slides under the control of a pneumatically operated shuttle...
8235674 Paint circulation pump control system  
A paint circulation pump control system having a plurality of pneumatic or hydraulic pump assemblies that operate at different outputs in response to load changes on a paint application system is...
8226374 Variable motor drive system for a reservoir with circulating fluid  
A motor drive for an electric motor of a variable fluid circulating system includes a processing module and a power module. The processing module receives a signal profile and generates a control...
8152476 Positive displacement pump with a working fluid and linear motor control  
The present invention relates to positive displacement pumps, and particularly to diaphragm positive displacement pumps. An inventive diaphragm positive displacement pump is provided comprising at...
8105279 Dispensing fluid from an infusion pump system  
Some embodiments of a medical infusion pump system include a pump device having a flexible pushrod that can adjust from a curved configuration to a generally straight configuration. The flexible...
8092191 Control system for reciprocating device  
A control system for a reciprocating device which includes a switching valve for directing fluid supply under pressure to one of two drive lines in an alternating manner, means for alternating the...
8083499 Regenerative hydraulic lift system  
A hydraulic cylinder assembly for a fluid pump including a cylinder, a bearing attached to an approximate first end of the cylinder, a rod slideably mounted within the bearing, and a piston...
8066491 Reciprocating pump with electronically monitored air valve having battery and solenoid electronic monitoring  
An air operated pump (10) uses a magnet (14) mounted in the valve cup (16) of the air motor (18) and two reed sensors (20) mounted in the valve cover (22) to monitor the speed and position of the...
8033801 Liquid chemical supply system and liquid chemical supply control device  
The occurrence of fluctuations in liquid chemical during the discharge and intake thereof in a device that employs a liquid chemical supply pump 10 that discharges liquid chemical taken in by...
7866953 Fluid pump  
A fluid pump for moving a fluid from a first fluid source of the fluid in a low pressure state to a second fluid source of the fluid in a high pressure state, includes a chamber; a partitioning...
7704227 Methods and apparatuses for detecting medical device acceleration, temperature, and humidity conditions  
An ambulatory medical device for detecting acceleration, temperature, and/or humidity conditions in or around the medical device is provided. The medical device includes one or more acceleration,...
7686588 Liquid chemical supply system having a plurality of pressure detectors  
A liquid chemical supply system that performs accurate pressure feedback control and controls the discharge flow rate of liquid chemical with high precision, even when the pressure setting value...
7658598 Method and control system for a pump  
The present invention includes methods and apparatuses for operating and controlling AOD pumps.
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...
7611332 Device and method for controlling a thick matter pump  
A device and a method for controlling a two-cylinder thick matter pump to achieve a reliable operation even of single-circuit two-cylinder thick matter pumps. To this end, the pipe switch includes...
7604064 Multi-stage, multi-phase unitized linear liquid entrained-phase transfer apparatus  
An apparatus capable of receiving oil and gas from a recovery or other input source, compressing and/or pumping said oil and gas using multi-phase compressors with heat exchange means, and...
7600982 Compact helical compressor for mobile use in a vehicle  
A compact helical compressor system for mobile use in vehicles is described. The system includes a helical compressor unit, a motor unit dedicated to the helical compressor unit for driving the...
7546870 Method and system for removing liquid from a gas well  
A method and system for the removal of produced liquid from a gas well extending from an earth surface through a subterranean gas-bearing formation using a thermodynamic cycle.
7517199 Control system for an air operated diaphragm pump  
The present invention includes methods and apparatuses for operating and controlling AOD pumps.
7428815 Method of operating a compressor near the compressor pumping limit and compressor  
In a method of operating a compressor near the compressor pumping limit wherein the compressor includes a control arrangement for adjusting the momentary operating state of the compressor, the...
7175394 Hydraulic multiphase pump  
The present invention provides a hydraulically driven multiphase pump system and methods for pumping a fluidstream from the surface of a well. The hydraulically driven multiphase pump system...
7096669 Method and apparatus for the prevention of critical process variable excursions in one or more turbomachines  
Many variables in processes such as those using turbocompressors and turbines must be limited or constrained. Limit control loops are provided for the purpose of limiting these variables. By using...
7004727 Blood component processing systems and methods using fluid-actuated pumping elements that are integrity tested prior to use  
Blood component processing systems and methods are coupled to a blood component processing device. The systems and methods include a fluid circuit that comprises at least one fluid pressure...
6981848 Methanol injection system and method to prevent freezing of a natural gas pipeline  
A system for injecting an injection fluid into a pipeline includes an injection pump, a timer for initiating sequencing of the pump, a control valve for controlling the flow of pressurized fluid...

Matches 1 - 50 out of 156 1 2 3 4 >