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8170762 |
Method and apparatus to control operation of a hydraulic pump for an electro-mechanical transmission
A method for controlling a hydraulic flow within a powertrain comprising an electromechanical transmission mechanically-operatively coupled to an engine adapted to selectively transmit power to an...
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8052398 |
Reciprocating gas compressor with speed modulation of compressor driver for pulsation avoidance
A method for reducing pulsation in a gas compressor system. The compressor driver (engine or motor) is operated at a modulated engine speed. The average of the modulated speed is selected to...
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8046126 |
Cooling device, control method of cooling device, and abnormality specification method
The start control is repeatedly performed for an oil pump that pressure feeds the flow of oil in a motor cooling system. This control is repeated for every specified rise in motor temperature...
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7859801 |
Control apparatus for linear compressor
The present invention discloses a control apparatus for a linear compressor which can vary a cooling force and prevent an inrush current. The control apparatus for the linear compressor includes a...
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7632076 |
Air supply system control
Controlling one or more component of a vehicle air supply system, such as an air compressor or an air dryer, based on an engine control signal. Examples of engine control signals include emission...
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7534095 |
Condensate scavenging system and method for in-ground vehicle lifts
An in-ground lift (10) is provided with a condensate scavenging system (30) that includes a pump (32) and a control (34) that is connected to the pump (32) and configured to selectively switch the...
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7466098 |
Method for controlling operation of compressor and apparatus thereof
A method for controlling an operation of a compressor and its apparatus can easily control an operation of the compressor without a request for a high-priced operation control apparatus by...
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7189358 |
Integrated micropump analysis chip and method of making the same
An integrated micropump or a plurality of integrated micropumps are communicated to a plurality of analysis chambers. A plurality of integrated analysis chambers include integrated analysis devices...
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7168924 |
Rod pump control system including parameter estimator
A rod pump control system includes a parameter estimator that determines from motor data parameters relating to operation of the rod pump and/or downhole dynamometer card without the need for...
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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...
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7010393 |
Controlling multiple pumps operating in parallel or series
Often, an application or process calls for multiple pumps operating within a piping network. Pump load, such as flow rate or pressure, is shared between these multiple pumps. The present disclosure...
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6773235 |
Rotodynamic multi-phase flow booster pump
A method and system for optimizing the performance of a rotodynamic multi-phase flow booster, such as a wet gas compressor, utilizes a meter which measures the fluid density ρ upstream of the ...
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6755040 |
Air conditioner and control method thereof
An air conditioner and a method of controlling the air conditioner includes a variable capacity compressor being operated at a maximum capacity in a case of starting an operation of the compressor...
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6558125 |
Injector for applying fluids fitted with a pressure measuring system
The injector of the invention serves for applying contrast media for X-ray or nuclear spin tomography and has a tube (3), as well as a roller pump (7) surrounded at least partially in peripheral...
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5897296 |
Vibrating compressor
A vibrating compressor of the present invention, which comprises a piston driving section for driving a piston by supplying a piston driving force, a displacement detecting section connected in an...
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5844490 |
Monitoring device for a chemical reagent supply system
A monitoring device for a chemical reagent supply system includes a position voltage generator, mounted to a pump of the supply system, to monitor the expansion state of a bellows. The actual...
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5749102 |
In-line sewage pump
An automatically activated pump for advancing mixed fluid waste from a toilet for disposal at an elevation above the toilet utilizes a flow sensing blade disposed within an intake conduit. The...
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5718562 |
Interface module for use with an NCT-based pumping mechanism and NCT-based cassette
A modular ambulatory infusion pump comprises a base unit including an integral housing, said base unit including an infusion pump for infusing fluid into a patient's body, a battery power supply...
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5647727 |
Image forming apparatus with fan cooling
In an image forming apparatus provided with a cooling fan for cooling an original table glass, a controller measures a cooling time from the end of a previous copying operation to the start of a...
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5645404 |
Personal fluid dispensing device
A personal fluid delivery device includes an electronic pump system and may also include a fluid reservoir system. The fluid reservoir system includes a fluid reservoir and a delivery tube disposed...
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5494584 |
Method and apparatus for controlling a pump upstream of a centrifuge
A method for removing insoluble materials from a liquid mixture, including spinning at least one centrifuge separator at a predetermined speed and pumping the mixture to the spinning centrifuge...
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4752188 |
Oil Detection method and apparatus for a pump submerged in a transformer vault
A probe is mounted on a water submersible pump housed within a transformer vault. The probe will extend into any water which accumulates in the bottom of the transformer vault enabling a conductive...
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4715785 |
Oil detection apparatus for submersible pumps
A probe is mounted on a water submersible pump housed within a transformer vault. The probe will extend into any water which accumulates in the bottom of the transformer vault enabling a conductive...
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4695779 |
Motor protection system and process
Method and apparatus for providing an electric motor such as used on an oil well pumping unit with stall protection. The system comprises means for generating a signal representative of motor speed...
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4629398 |
Oil detecting switch for controlling a pump
The oil detecting switch includes a light oil float switch, a water float switch and a heavy oil float switch. When the light oil float switch is closed, a relay is activated energizing a light oil...
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4599045 |
Safety means and method for the handling of flammable fluids
The present invention is an apparatus and method for use in a flammable fluid distribution facility where a tanker truck or tanker ship onloads the flammable fluid and transports it to one or more...
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4595341 |
Fluid supply apparatus including plural reservoirs and condition responsive control of pump drive motor by contaminant sensing probes
An automobile hydraulic braking circuit comprises two reservoirs in addition to the main hydraulic fluid reservoir. One additional reservoir can replenish the other which in turn can replenish the...
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4472111 |
Apparatus for generating high pressure fluid
The present invention comprises an apparatus for producing high pressure fluid by means of a cylinder having a reciprocatingly sliding ram inside, suction and pressurization of the fluid being...
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4410924 |
Motor protection control circuit
A protection device and circuit for a fluid pump or the like including a motor control relay MS for actuating relay contacts MS-1, MS-2, MS-3 that control the communication of power to a drive...
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4405286 |
Actively suspended counter-rotating machine
A counter-rotating machine, such as a positive displacement pump having a pair of meshed, non-contacting helical screws (10,12), subjects its rotating members to axial and radial thrust forces when...
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4255088 |
Liquid pumping system having means for detecting gas in the pump
An improved liquid pumping system wherein gas within the pump may be detected to indicate an error in desired flow rate or displaced volume. The system may be shut down if excessive gas is detected...
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4235571 |
Cooling equipment
Cooling equipment is disclosed as having an axial flow fan whose blades are restrained from excessive bending in an axial direction.
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4208871 |
Fuel control system
A fuel control system has a boost pump for pumping liquid fuel to a positive displacement pump, which in turn meters the fuel to a fuel nozzle of a combustion engine. The positive displacement pump...
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4083608 |
Air compressor lay-over control circuit
A control circuit for reducing the output cycle of a compressed air system of a rapid transit car during "lay-over" periods, when only a minimum of compressed air for a parking brake, for example,...
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4024711 |
Throttle control mechanism for an engine
The throttle of an engine is controlled to maintain its speed substantially constant in spite of variations of load upon it. The illustrated load comprises hydraulically operated equipment in a...
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3838597 |
METHOD AND APPARATUS FOR MONITORING WELL PUMPING UNITS
Method and apparatus for monitoring the operation of a sucker rod-type pump employed in withdrawing fluids from a well. A transducer is employed to generate a signal representative of the load in...
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3633420 |
CONTINUOUS FLOW METERING AND CONTROL APPARATUS
The invention relates to apparatus for providing substantially immediate flow measurement and/or flow control. The apparatus incorporates a positive displacement flow meter in the form of a gear...
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3610848 |
VARIABLE INTERVAL CIRCUIT BREAKING TIMER
A timer is provided for alternately opening and closing an electrical circuit in accordance with a preselected time interval determined by the surface contour and rate of rotation of a timer cam. A...
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3527549 |
MOTOR PUMP SUSPENSION
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3506252 |
PNEUMATIC SUSPENSION FOR AUTOMOTIVE VEHICLES
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3426508 |
FILTER UNIT FOR AIR SYSTEMS
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3359791 |
System responsive to well pumping loads
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3306210 |
Automatic oil well pump control
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3280940 |
Safety control device for machines
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3269121 |
Wind motor
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3269320 |
Pump control method and apparatus
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3251535 |
Air compressor control means
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3195034 |
Apparatus for monitoring vibrations of a fan
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3195035 |
Motor control system
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3174507 |
Means for governing the pressure in ventilating units
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