Matches 1 - 18 out of 18

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US20120134848 HYDRAULIC FAN CIRCUIT HAVING ENERGY RECOVERY  
A hydraulic fan circuit is disclosed. The hydraulic fan circuit may have a primary pump, a high-pressure passage fluidly connected to the primary pump, and a low-pressure passage fluidly connected...
US20130078114 PHASE SHIFT CONTROLLER FOR A RECIPROCATING PUMP SYSTEM  
A pump system using multiple reciprocating positive displacement pumps which phase shift is controlled by a phase shift controller. The phase shift controller uses a virtual master pump inside the...
US20100322791 HYDRAULIC SYSTEM WITH SUPPLEMENT PUMP  
If a hydraulic system has several modes of operation, in particular a mode with a high pressure demand (II) and a mode with a high fluid flow demand (II), the hydraulic fluid pump has to be built...
US20150098841 Spin Pump With Spun-Epicyclic Geometry  
The subject matter described herein relates to a spin pump that includes a combination of a compressor and a vacuum pump on respective pistons extending from a common crankshaft in a rotating...
US20120070318 OIL PUMP UNIT WITH VARIABLE FLOW RATE  
An oil pump unit with a variable flow rate includes lubrication pumps and a control pump that are driven by rotation of a crankshaft of an engine, and changes an oil supply amount from the control...
US20150114477 AIRCRAFT FUEL SUPPLY SYSTEMS  
A fuel supply system for an aircraft is provided for delivering in use fuel from a fuel tank to an aircraft powerplant. The in use fuel flows along a fuel flow passage from the fuel tank to the...
US20140294618 HYDRAULIC PRESSURE SUPPLY SYSTEM OF AUTOMATIC TRANSMISSION  
An automatic-transmission hydraulic pressure supply system includes a low-pressure hydraulic pump supplying low hydraulic pressure to a first low-pressure line, a low-pressure regulator valve...
US20050244280 Liquid loop with multiple pump assembly  
A pump assembly includes inlet and outlet interfaces capable of coupling to a liquid cooling loop tubing, a plurality of pump connectors coupled to the inlet and outlet interfaces enabling...
US20110318195 PUMP ARRANGEMENT WITH TWO PUMP UNITS, SYSTEM, USE AND METHOD  
The present invention relates to a pump arrangement comprising two pump units, each pump unit comprising a pumping cylinder, a reciprocally movable pumping piston, said pumping piston delimiting a...
US20110262287 HYDRAULIC PUMP CONTROLLER FOR CONSTRUCTION MACHINE  
A hydraulic pump controlling apparatus of a construction machine according to the present disclosure includes: a hydraulic pump in which a swash plate angle is controlled to control a discharge...
US20090241535 ON-DEMAND HYDRAULIC PUMP FOR A TRANSMISSION AND METHOD OF OPERATION  
A fixed displacement binary pump is provided for a powertrain on a vehicle. A hydraulic system is operatively connected with first and second discharge ports of the pump and is operable to...
US20120156005 BUFFER AIR FOR A LABYRINTH SEAL  
A method of providing buffer air to a labyrinth seal includes operating a multi-stage compressor system having an earlier stage and a later stage such that the air pressure at the later stage is...
US20070092381 Gas feed assembly  
A gas feed assembly (30) comprises a compressor arrangement (32) comprising first and second compressor (34, 36). The gas feed assembly includes outlet means (42) for gas for the first and second...
US20090008331 Hemodialysis systems and methods  
The present invention generally relates to hemodialysis and similar dialysis systems, including a variety of systems and methods that would make hemodialysis more efficient, easier, and/or more...
US20150030472 HYDRAULIC PRESSURE SUPPLY SYSTEM OF AUTOMATIC TRANSMISSION FOR VEHICLE  
A hydraulic pressure supply system of an automatic transmission for a vehicle may be provided with first and second pump chambers and may supply hydraulic pressure generated at the first and...
US20110123361 VARIABLE CAPACITY TYPE ROTARY COMPRESSOR  
Disclosed is a variable capacity type rotary compressor, in which a refrigerant sucked via one suction pipe can be alternately sucked into each compression space via a communication passage...
US20110142690 PUMP APPARATUS, POWER TRANSMISSION APPARATUS, AND VEHICLE  
A pump apparatus configured with a first pump for pumping working fluid in accordance with a reciprocation of a piston using a space between a first open/close valve for suction and a second...
US20150267697 Variable Pressure Limiting for Variable Displacement Pumps  
Method of controlling multiple variable displacement hydraulic pumps determined relative to operator commands. If non-second-pump-dominated command, a respective adjusted displacement request is...
Matches 1 - 18 out of 18