Matches 1 - 34 out of 34


Match Document Document Title
US20140294601 ACTIVE ADAPTIVE HYDRAULIC RIPPLE CANCELLATION ALGORITHM AND SYSTEM  
Hydraulic pumps/motors are used to convert between rotational motion/power and fluid motion/power. Pressure differential is achieved across the pump/motor by applying torque to either aid or...
US20150204322 PUMP SYSTEM HAVING SPEED-BASED CONTROL  
A pump system is disclosed. The pump system may have a power source, a pump, and a torque converter configured to fluidly couple an output rotation of the power source to an input rotation of the...
US20120156056 PUMP UNITS  
A pump unit includes a pump, a motor configured to drive the pump, a control device communicating with the motor and a pressure detection device configured to detect a pressure of a fluid...
US20110052416 Variable Speed Pumping System and Method  
A variable speed pumping system and an associated method for moving water of an aquatic application. The variable speed pumping system includes a water pump for moving water in connection with...
US20130330205 VARIABLE FLUID FLOW TECHNIQUES FOR MACHINE FLUID SYSTEMS  
Methods, systems, and techniques for structuring, operating, and/or controlling a variable fluid flow system of a machine are provided. In various embodiments, a supplemental pump and/or an...
US20150219104 METHOD OF DETERMINING CIRCULATION STATE OF COOLING WATER  
A method of determining a state of cooling water is provided. The method includes operating, by a controller, a driving motor of a cooling water-circulating pump that is configured to circulate...
US20050180856 Drive technology for peristaltic and rotary pumps  
A method and system for controlling a rotary pump where a rotary pump can be coupled to a stepper motor, and the stepper motor can be controlled with micro- or nano-stepping accuracy using a...
US20080134701 Variable Compressor Oil Return  
A method includes operating a variable-speed compressor in a refrigeration system carrying a refrigerant-oil mixture at a varying compressor speed to provide cooling capacity in proportion to...
US20150184575 Control Methods and Systems for Dual Mode Cooling Pump  
Methods and systems for controlling the operation of a dual mode engine accessory, such as a dual mode cooling pump. The dual mode device has two modes of operation, an electric motor operation...
US20150147188 High Volume Low Speed Fan Using Direct Drive Transverse Flux Motor  
Disclosed is a high volume low speed (HVLS) fan that is designed to circulate air in large buildings for cooling, heating, and ventilation. A fan with a diameter between 8 to 24 feet consisting of...
US20170089627 CHILLER  
A chiller is provided that may include a plurality of compressors, a plurality of drives to drive the plurality of compressors, an input having a plurality of switches, to which IDs that...
US20150078917 SYSTEM AND METHOD FOR CONVERTERLESS OPERATION OF MOTOR-DRIVEN PUMPS  
A converterless motor-driven pump system includes an off-grid prime mover. The off-grid prime mover has a rotational driveshaft and operates in response to a throttle control command to control a...
US20160146091 APPARATUS AND METHOD FOR CONTROLLING COOLING FAN OF VEHICLE  
An apparatus and method for controlling a cooling fan of a vehicle are provided. The apparatus includes an information detector that is configured to detect information for operating the cooling...
US20100034665 CONTROL SYSTEM FOR A PUMP  
The present invention relates to pumps comprising variable frequency drive means and methods for operating such pumps. The inventive method for operating a pump (1) comprises the steps of...
US20090129941 METHOD FOR CONTROLLING A PUMP ARRANGEMENT, AND PUMP ARRANGEMENT  
A method for controlling a pump arrangement comprising a fluid delivering pump having a pump drive, a bypass line having a bypass valve for routing fluid back from an outlet side of the pump to a...
US20080240930 Method and System for Optimizing Downhole Fluid Production  
A method and system for pumping unit with an elastic rod system is applied to maximize fluid production. The maximum stroke of the pump and the shortest cycle time are calculated based on all...
US20140227104 HYDRAULIC DRIVE SYSTEM FOR ELECTRICALLY-OPERATED HYDRAULIC WORK MACHINE  
An electrically-operated hydraulic work machine drives an actuator with a hydraulic pump driven by an electric motor and exercises load sensing control by controlling the rotation speed of the...
US20170102000 MOTOR DRIVE DEVICE CAPABLE OF INFORMING MALFUNCTION IN OPERATION OF FAN, AND METHOD THEREOF  
A motor drive device can improve the accuracy of detection of malfunction in a fan. The motor drive device includes a fan, a fan controller for controlling the fan, a rotation speed detecting part...
US20060152995 Apparatus for delivering and recirculating liquid compositions  
An apparatus and a method are provided for continuously pumping liquid coloring composition to a destination without interruption in flow. This allows all loads delivered to multiple mixing...
US20050095140 Rod saver speed control method and apparatus  
A motor speed controller (100) identifies the position of a pump rod (14). At one or more critical positions of the rod, the motor speed controller (100) adjusts the speed of the motor to change...
US20060099084 Electric blower  
The present invention provides an electric blower that performs: measuring an amount of airflow against a fan rotation speed of the blower with a load magnitude detected previously; determining an...
US20150044061 AVOIDANCE OF CONTINUOUS OPERATION IN FREQUENCY CONVERTER-STIMULATED TORSION RESONANCES OF A COMPRESSOR TRAIN  
A method for controlling a rotational speed of a compressor train that can be driven at an adjustable rotational speed using a drive unit, a corresponding arrangement and a compressor train with a...
US20050084384 Smart fan and pump controller  
A pump or DC fan used to cool an electronic system is monitored for speed. When the pump or fan encounters an unexpected increase in impedance, such as an obstruction or a bearing anomaly, the...
US20120055484 Ventilator  
A ventilator which includes: at least one pair of reciprocating opposed gas moving means, the internal volume of which is arranged to be reduced and enlarged by a balanced drive, said gas moving...
US20050180857 Fluid circulation pump for heating and conditioning systems and the like  
The present invention relates to a method for measuring a parameter characteristic of a heating and/or conditioning system (1) equipped with a primary hydraulic circuit (6) and a secondary...
US20150211537 Pump System with Automated Testing  
A pump system is provided. The pump system includes a power source, a pump and a transmission. A first sensor is configured to provide information indicative of at least one first operating...
US20140334941 PUMP APPARATUS  
Provided is a pump apparatus capable of improving the performance in a wide operation range from an operation area with a low pressure and a high flow rate to an operation area with a high...
US20140072449 FAN CONTROL SYSTEM  
A fan control system for a fan on a motherboard includes an I/O controller installed on the motherboard and a control circuit electrically connected to the I/O controller. The fan includes a motor...
US20120070312 CONTROLLED HYDRAULIC SYSTEMS  
There is herein described a controlled hydraulic systems for operating machinery. More particularly, there is described a controlled hydraulic system (200) comprising a variable drive ratio device...
US20060067837 Vehicle air conditioner in which shaft seal is protected  
An object of the present invention is to protect a shaft seal of a variable displacement compressor of an air conditioner for a vehicle by the control thereof. The air conditioner for a vehicle...
US20060099094 Vacuum pumping arrangement and method of operating same  
A vacuum pumping arrangement (10) for controlling pressure in a chamber, the arrangement comprising a molecular pumping mechanism (12) and a backing pumping mechanism (14). The backing pumping...
US20170136845 BUS AIR-CONDITIONING ARRANGEMENT, AND METHOD FOR PRODUCING SAME  
A bus air-conditioning arrangement with a compressor for compressing refrigerant, wherein the compressor has an electric motor and a compression device, which is driven by the electric motor, for...
US20130017097 ALARM CIRCUIT  
An alarm circuit includes a fan controller with a rotation speed control pin and a rotation speed detection pin, a first rectifying circuit connected to the rotation speed control pin, a switch...
US20070237649 Device and Method for Preventing Foreign Matters from Adhering in Dishwasher  
Device and method for preventing foreign matters from adhering in a dishwasher, the device including a circulating pump including a washing motor for providing a driving source to pump up washing...

Matches 1 - 34 out of 34