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| Number | Title | Issue Date |
| 7871248 | Airframe mounted electric motor driven lubrication pump control deoil system A system for controlling lubricant displacement from a machine during turbomachine shutdown sequence includes a motor, a pump, a control valve, and a motor control unit. The motor is selectively energized from a power bus to rotate at a rotational speed and supply a... | 01/18/2011 |
| 7581935 | Device and method for controlling a thick matter pump The invention relates to a device and a method for controlling a two-cylinder thick matter pump comprising delivery pistons that are actuated in a push-pull manner by means of a hydraulic reversible pump (6) and hydraulic drive cylinders controlled by said pu... | 09/01/2009 |
| 7337920 | Fluid dispensing apparatus A concentrated flavour dispensing machine having displacement pumps for delivering between a few millilitres and few ounces of fluids having a viscosity value between 1 to 4000 centepoise is described. The dispensing machine includes a cabinet for containing a multi... | 03/04/2008 |
| 7299648 | Refrigeration system of air conditioning apparatuses with bypass line between inlet and outlet of compressor A refrigeration system of air conditioning apparatuses with a bypass line between the inlet and outlet of a compressor. The refrigeration system (1) has an expansion unit (10) to execute adiabatic expansion of refrigerant, an indoor unit (20) wi... | 11/27/2007 |
| 7197890 | Valve for preventing unpowered reverse run at shutdown An inventive method of preventing unpowered reverse rotation in a compressor includes the steps of placing a solenoid valve at a location near compressor discharge. The valve is preferably actuated soon after the power to the motor is cut off, blocking the flow of r... | 04/03/2007 |
| 7163382 | Suitcase style air compressor assembly The present invention is directed to a suitcase style air compressor assembly having an extensible handle bar assembly and a wheel assembly. When the extensible handle bar assembly is fully extended, the suitcase style air compressor assembly may be transported by u... | 01/16/2007 |
| 7152618 | Vacuum station and the method for operating the same A vacuum station is used for storing sewage from a vacuum sewage pipe and then delivering the sewage to a sewage treatment plant or the like. The vacuum station includes a collection tank for collecting sewage, a plurality of vacuum pumps for depressurizing and pres... | 12/26/2006 |
| 7121813 | Reverse rotation preventing structure of centrifugal compressor The invention relates to a reverse rotation preventing structure of a centrifugal compressor. The reverse rotation preventing structure of the centrifugal compressor comprises: a discharge pipeline of the centrifugal compressor; a suction pipeline of the centrifugal... | 10/17/2006 |
| 7118348 | Compressed air system and method of control A compressed air system, wherein a decision to de-energize a compressor motor is made with consideration of the likely need for the operation of the compressor at a future point in time. A rate of pressure decay in an air reservoir may be extrapolated over a predete... | 10/10/2006 |
| 7100632 | Sump liner A sump liner comprising a liner wall joined with a base member, the liner wall extending about the periphery of the base member, the liner wall comprising a primary reservoir portion and a secondary reservoir portion, with a weir extending from the base member and t... | 09/05/2006 |
| 7077632 | Blower having a blower tube incorporating a reduction device for reducing the clear flow cross section of said blower tube at idle operation A blower (1) has a housing (10) to which a blower pipe (2) may be removably connected. An internal combustion engine located within the housing (10) drives a blower wheel. The blower wheel, in turn, generates an air flow (11) withi... | 07/18/2006 |
| 7062957 | Percolation test apparatus A percolation test apparatus comprises a water tank (12), a pipe (36) for directing water from the tank into a hole (20) in the ground, an on-off valve (32) for controlling the flow of water in the conduit, and a water level sensor (30... | 06/20/2006 |
| 7029240 | Support structure for a portable air compressor A portable air compressor assembly includes a tubular frame having a pair of parallelogram shaped side sections. A support plate is connected between the side sections and horizontally positioned in a compressor normal operating position. A plurality of operating co... | 04/18/2006 |
| 6994528 | Air compressor with improved hand portability An air compressor package having improved stability and portability. The air compressor package is positionable in an operational position, wherein the air compressor package is positioned on a base, and a transport position, wherein the air compressor package may b... | 02/07/2006 |
| 6964558 | Compressor utilizing low volt power tapped from high volt power Low voltage electrical power is supplied to a diagnostic control device in a sealed compressor. Electrical power is tapped from a high voltage power line and transformed to low voltage power that in turn operates the diagnostic control device. The diagnostic control... | 11/15/2005 |
| 6948921 | Vacuum pump comprising an outlet A vacuum pump (1, 30) has an inlet (5) and an outlet (6). Plug-in screw fittings (9) are connected with the inlet and the outlet. The plug-in screw fittings include a bore with an internal bevel (22) that receives a flexible connec... | 09/27/2005 |
| 6923627 | Air compressor with extensible handle bar assembly An air compressor assembly with one or more of the following features: a removable manifold assembly capable of being remotely located from the air compressor assembly for controlling and distributing compressed air from the air compressor assembly to one or more ai... | 08/02/2005 |
| 6641368 | Compressor utilizing low volt power tapped from high volt power Low voltage electrical power is supplied to a diagnostic control device in a sealed compressor. Electrical power is tapped from a high voltage power line and transformed to low voltage power that in turn operates the diagnostic control device. The diagnos... | 11/04/2003 |
| 6626643 | Twin vane pump apparatus for dispensing meat products An apparatus and method for producing predetermined quantities of a meat product, inc which the apparatus comprises a twin vane concentric pump with an inlet and an outlet circumferentially spaced from one another, and a pair of independently movable vane... | 09/30/2003 |
| 6599093 | Compressor having speed and intake regulation valve control A compressor that enables the increase of compression efficiency, the prevention of abnormal temperature rising in the discharge, and the reduction of power loss, includes a compressor body 11, an intake registration valve 12 in the inlet side, and a pres... | 07/29/2003 |
| 6558126 | Compressor utilizing low volt power tapped from high volt power Low voltage electrical power is supplied to a diagnostic control device in a sealed compressor. Electrical power is tapped from a high voltage power line and transformed to low voltage power that in turn operates the diagnostic control device. The diagnos... | 05/06/2003 |
| 6533552 | System and methods for controlling rotary screw compressors An electronic control system dynamically varies the output capacity of a compressor by controlling plural valves associated with the compressor to provide pressurized air to a distribution system at an appropriate rate. The control system operates in any ... | 03/18/2003 |
| 6517329 | Electromagnetic blower and two-passage air supply apparatus Provided is a low-noise, long-life electromagnetic blower that has a simple, low-priced configuration and can realize two different outputs, high and low. When the electromagnetic blower is operated with low output, coils of an electromagnet are connected... | 02/11/2003 |
| 6328690 | Air feeding device for endoscope An air feeding device for endoscope system includes an air compressor that compresses air and feeds the air in a sealed space, and a pressure sensor that detects air pressure in the sealed space. Further, a pressure setting device and a pressure controlle... | 12/11/2001 |
| 6257833 | Redundant, dedicated variable speed drive system A redundant, modular pump system includes a plurality of substantially identical pump modules. Each module includes constant speed drive circuitry, variable speed drive circuitry and a pump. Expansion is accomplished by adding modules. Reliability is enha... | 07/10/2001 |
| 6155790 | Method and equipment for controlling a pipe network A method and equipment for controlling a pipe network comprising piping (1), a pump (2) and at least two control valves (3), whereby the valve position and the flow through the valve are monitored, and in order to achieve desired flows the rotational spee... | 12/05/2000 |
| 6146100 | Compressor unit and control device used thereby In the inlet pipe (7) of the compressor element (1) is provided a pneumatically controlled throttle valve (9), whereas the motor (3) of the compressor element (1) has a pneumatically controlled speed regulator (6). This speed regulator (6) and the throttl... | 11/14/2000 |
| 6099264 | Pump controller In accordance with the present invention, there is provided an in-line fluid pump controller for activating and de-activating a fluid pump which is configured to pump fluid through a fluid line. The fluid in the fluid line is characterized by a flow rate ... | 08/08/2000 |
| 6050779 | Conveying apparatus using unstable electric power supply A conveying system comprising a pump whose power source is an unstable electric power supply, such as a solar cell; a first supply pipe for conveying liquid from an intake to the pump; a second supply pipe for conveying the liquid from the pump to a disch... | 04/18/2000 |
| 5795328 | Vacuum system and a method of operating a vacuum system A vacuum system and a method of operating a vacuum system. The system comprises a vacuum line, a pump, a pump motor, a pressure adjusting assembly, a pressure sensor and a control means. The pump is connected to the vacuum line for drawing fluids therefro... | 08/18/1998 |
| 5697763 | Tank mounted rotary compressor A rotary compressor having a drive motor and a single pressure vessel, wherein the pressure vessel acts both as a gas oil separator and as a compressed gas storage tank. The compressor employs a control for valves in order to close off the supply of oil a... | 12/16/1997 |
| 5630706 | Multichannel pump apparatus with microflow rate capability A multichannel pump system for HPLC and other uses has a plurality of fluid pumps whose input is fed separately to at least one high pressure mixing unit downstream of the pumps and any associated items such as pulse dampeners and pressure transducers. A ... | 05/20/1997 |
| 5624394 | Vacuum system and a method of operating a vacuum system A vacuum system and a method of operating a vacuum system. The system comprises a vacuum line, a pump, a pump motor, a pressure adjusting assembly, a pressure sensor and a control device. The pump is connected to the vacuum line for drawing fluids therefr... | 04/29/1997 |
| 5586574 | Air system control Control system for maintaining selected pressure in a gas distribution system including a header and multiple takeoffs from the header including a compressor to supply gas to the header at selected pressure range, a control valve in the header upstream of... | 12/24/1996 |
| 5415528 | Solution pumping for maximizing output while minimizing uneven pumping pressures A solution pumping system is disclosed which is embodied as a disposable pump cassette including a self-contained positive displacement pump, and an associated pump driver including a reciprocable pump piston for driving the pump of the cassette. This sys... | 05/16/1995 |
| 5351705 | Method and apparatus for controlling fluid pumps and valves to regulate fluid pressure and to eliminate fluid flow surges A method and apparatus for supplying and delivering fluids at a constant pressure includes means for measuring fluid pressure, means for measuring fluid flow and means for actuating fluid valves to control fluid pressure and flow through the valves. A pro... | 10/04/1994 |
| 5284423 | Computer controlled positive displacement pump for physiological flow simulation A positive displacement pump includes a reservoir for storing fluid, a cylinder for receiving and discharging the fluid and a piston within the cylinder for forcing the fluid into and out of the cylinder. The pump further includes a four-way valve having ... | 02/08/1994 |
| 5168893 | Block and bleed valve A valve for use with a first working fluid conduit and a second working fluid conduit, the valve includes a valve body with a valve bore formed therein. A piston is slidably disposed within the valve body. There is a first opening and a second opening for... | 12/08/1992 |
| 5167491 | High to low side bypass to prevent reverse rotation Rotary compressors such as screw compressors and scroll compressors are capable of reverse operation at shutdown as the system pressure seeks to equalize through the running gear. The present invention provides a valved bypass which is opened responsive t... | 12/01/1992 |
| 5165502 | One-main pipe type centralized lubrication apparatus A one-main pipe type centralized lubrication apparatus having a pump device, one main oil feed pipe and a plurality of distributors, wherein the pump device is provided with a depressurization passage for opening a discharge passage connected to the main ... | 11/24/1992 |
