| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 417440000 | Having separate noncyclic valve (e.g., bypass, etc.) | 25 |
| 20090116985 | Hermetic compressor - A hermetic compressor including a discharge valve system in a cylinder. A discharge valve system includes a discharge reed having an opening/closing portion and a discharge reed holding portion, a spring reed having a movable portion and a spring reed holding portion, and a stopper having a regulation portion and a stopper holding portion. The discharge reed, the spring reed and the stopper are fixed in this order to a pedestal of a valve plate. At a spring reed bending portion provided in a movable portion, the movable portion is bent toward the direction of the valve seat and the tip portion is brought into contact with the plate contact portion. Space is provided between the movable portion of the spring reed and the opening/closing portion of the discharge reed, and both are not brought into close contact with each other. Thus, delay in closing discharge reed can be prevented and deterioration of the refrigerating capacity can be suppressed. | 05-07-2009 |
| 20090191075 | POSITIVE DISPLACEMENT PISTON PUMP, FOR LUBICATION - A positive displacement pump whose structure allows to increase the pressure of the lubricant taken from the oil sump, wherein the free level surface of the lubricant could even be located far away from the rotating members of the machine. This applies specifically to reciprocating, air compressors, which generally have an oil sump arranged very distant from the drive shaft used to transmit the motion needed for the actuation of the pump. The pump is based on a crank mechanism (7, 7′, 7″; 13; 13′) that sucks the lubricant and delivers it under pressure, in a target-oriented manner, to the components which require lubrication. | 07-30-2009 |
| 20100232995 | Effervescent Gas Bleeder Apparatus - A diaphragm metering pump suitable for metering an effervescent gas. The pump has a pump head with a product chamber having an inlet end with a one-way inlet valve and an outlet end with a one-way outlet valve. A displaceable diaphragm member defines a boundary of the product chamber. The diaphragm member is capable of being reciprocated to cause pumping displacements. A discharge side is disposed downstream from the outlet valve. A passageway is disposed in fluid communication between the discharge side and the product chamber. A valve is disposed in the passageway. The valve is opened intermittently to allow liquid to re-enter the product chamber in an amount effective to purge gas from the product chamber to prevent loss of prime. | 09-16-2010 |
| 20110129374 | VACUUM PUMP IN PARTICULAR ROOTS TYPE PUMP - A vacuum pump, in particular a pump of the type with rolling bodies, includes rotary bodies ( | 06-02-2011 |
| 20110200472 | INTEGRATED FUEL DELIVERY MODULE AND METHODS OF MANUFACTURE - An apparatus includes a housing defining a first cavity containing a pump, a second cavity containing a filter and a lumen configured to provide fluid communication between the first cavity and the second cavity. The housing has a first end portion configured to be disposed within a fluid reservoir and a second end portion including a flange configured to be disposed outside of and coupled to the fluid reservoir. A surface of the first end portion defines a first opening in fluid communication with the first cavity. A surface of the second end portion defines a second opening in fluid communication with the second cavity. A cover is configured to be removably coupled to the second end portion of the housing about the second opening such that the filter can be removed from the second cavity when the flange is coupled to the fluid reservoir. | 08-18-2011 |
| 20120027632 | COMPRESSOR WITH A BYPASS PORT - A system is provided for adjusting the volume ratio of a screw compressor. The system can use a port in a rotor cylinder to bypass vapor from the compression chamber to the discharge passage of the compressor. A valve can be used to open or close the port to obtain different volume ratios in the compressor. | 02-02-2012 |
| 20120107159 | Bypass Unloader Valve For Compressor Capacity Control - A reciprocating compressor includes a cylinder block, a cylinder head, and a bypass unloader valve assembly. The cylinder block has a cylinder disposed therein. The cylinder head is secured to the cylinder block overlying the cylinder and has a suction plenum and a discharge plenum in selective fluid communication with the cylinder. The bypass unloader valve assembly is in operable communication with the cylinder head and is responsive to control signals to rapid cycle to allow for fluid communication of a refrigerant between the discharge plenum and the suction plenum. | 05-03-2012 |
| 20120207632 | FUEL PUMP - In a fuel pump that includes a pump housing ( | 08-16-2012 |
| 20120213652 | PUMP FOR A HIGH-PRESSURE CLEANING DEVICE - A pump for a high-pressure cleaning device for delivering cleaning fluid is provided. The pump has at least one pump chamber, into which at least one piston plunges, and which is connected to a suction line via at least one inlet valve and to a pressure line via at least one outlet valve. A bypass line leads from the pressure line to the suction line. An overflow valve is arranged in the bypass line. The valve body of the overflow valve is connected to a control piston which is displaceably held in a control chamber with the interposition of a sealing element and moves the valve body into a closed or an open position as a function of the flow rate of the cleaning fluid in the pressure line. A sliding element is arranged in the control chamber and abuts sealingly on the wall of the control chamber. | 08-23-2012 |
| 20120251365 | HIGH PRESSURE FUEL PUMP - A discharge valve body and a relief valve body are coaxially arranged in-series in a discharge-relief valve unit, which is accommodated in a fuel discharge passage. When a first forward force acting on the discharge valve body in its valve opening direction becomes larger than a second rearward force acting on the same valve body in a valve closing direction, the discharge valve body is moved in its valve closing direction, so that fuel is pumped out from a fuel pressurizing chamber to a discharge port. When a second forward force acting on the relief valve body in a valve opening direction becomes larger than a first rearward force acting on the same valve body in its valve closing direction, the relief valve body is moved in its valve opening direction, so that a fuel relief is allowed from a discharge-port side to a pressurizing-chamber side. | 10-04-2012 |
| 20120251366 | HIGH-PRESSURE PUMP - A valve body is provided with a discharge relief portion. A relief valve outlet is formed in an end face thereof on a central axis of the valve body. Discharge valve inlets are point-symmetrically formed with respect to the central axis. A discharge valve outlet is formed in another end face thereof and relief valve inlets are point-symmetrically formed with respect to the central axis. A discharge valve outlet and the discharge valve inlets communicate with each other. A flow of fuel from a pressurization chamber to a fuel discharge port is restricted by a discharge valve member capable of closing the discharge valve outlet. The relief valve outlet and the relief valve inlets communicate with each other. A flow of fuel from the fuel discharge port to the pressurization chamber is restricted by a relief valve member capable of closing the relief valve outlet. | 10-04-2012 |
| 20120308418 | Leak-Preventing Device for a Pump - A pump includes a shell, an air-pumping device, a cover, a valve and a buoyant. The air-pumping device is used for pumping air out of the shell and therefore pumping liquid into the shell. The cover includes an opening and channel defined therein. The cover is attached to the shell and the air-pumping device. The shell is in communication with the exterior thereof via the opening. The shell is in communication with the air-pumping device via the channel. The valve is movable between a first position for releasing the channel and a second position for blocking the channel. The valve is in the second position as the pump is in an inverted position. The buoyant is used for moving the valve to the second position as the pump is almost full of liquid in an upright position. | 12-06-2012 |
| 20120315170 | AIR CONDITIONING COMPRESSOR FOR A VEHICLE AND VEHICLE - The invention relates to an air conditioning compressor ( | 12-13-2012 |
| 20120321496 | FUEL INJECTION PUMP - A fuel injection pump is provided which can be manufactured without an increase in the manufacturing cost and which is configured so that the sealing performance of an electromagnetic spill valve can be maintained with minimum maintenance cost. | 12-20-2012 |
| 20130302193 | WELL-DRILLING SUCKER-ROD PUMP - The invention relates to the oil-producing industry and can be used for extracting oil with a large content of gas in the liquid being pumped out. The well-drilling sucker-rod pump comprises a cylinder containing a hollow plunger, in the lower part of which a delivery valve is mounted. An inlet valve is mounted in the lower part of a pump chamber. The pump is equipped with a passageway having a floating valve which has a cut-off floating element and a seat arranged above the latter. The cylinder is stepped on the internal surface side, and the passageway having the cut-off floating element is formed in the lower part of a smaller cylinder step above the pump chamber. One passageway opening is connected to the upper part of the pump chamber and the other passageway opening is connected to the well. As a result, the pump efficiency is increased and gas generation in the pump chamber is reduced. | 11-14-2013 |
| 20140010688 | HYDRAULIC CIRCUIT FOR CONTROLLING BOOMS OF CONSTRUCTION EQUIPMENT - Disclosed is a hydraulic circuit for controlling booms of construction equipment, wherein working oil which is relieved from a large chamber of a boom cylinder passes through an orifice so as to prevent the boom from lowering if an overload is applied when the boom is not being operated. The hydraulic circuit for controlling booms of construction equipment includes: a boom cylinder which is connected to a hydraulic pump via a first path and a second path; a boom control valve which is mounted on the path between the hydraulic pump and the boom cylinder; a holding valve which is mounted between the boom control valve and the first path of the boom cylinder and prevents the natural lowering of a boom when the boom control valve is in a neutral position; a port relief valve which is mounted to the first path at the lower side of a holding poppet and relieves working oil when an overload is generated at the first path; and an orifice valve which is mounted at the lower side of the port relief valve, relieves the working oil which passes through the port relief valve when the boom control valve is neutral so as to relieve the working oil through an orifice, and discharges the working oil which passes through the port relief valve to a hydraulic tank at the time of conversion due to boom-up pilot signal pressure which is applied to the boom control valve. | 01-09-2014 |
| 20140369871 | Compressor - A compressor includes a housing; a suction region and a discharge region which are formed in the housing in a partitioned manner. The compressor also includes a shaft which is pivotally supported in the inside of the housing. The compressor further includes a compression mechanism which sucks a refrigerant from the suction region and discharges the refrigerant to the discharge region due to a rotational motion of the shaft. The compressor further includes a bypass passage which makes the suction region and the discharge region communicate with each other, a valve element 41 which is capable of closing the bypass passage 40 from a discharge region side, and a spring which biases the valve element toward the discharge region side. | 12-18-2014 |
| 20150104341 | BYPASS VALVE, IN PARTICULAR COMPRESSOR BYPASS VALVE - A bypass valve ( | 04-16-2015 |
| 20160025054 | HIGH PRESSURE PUMP HAVING UNITARY DISCHARGE AND RELIEF VALVE - A valve body is provided with a discharge relief portion. A relief valve outlet is formed in an end face thereof on a central axis of the valve body. Discharge valve inlets are point-symmetrically formed with respect to the central axis. A discharge valve outlet is formed in another end face thereof and relief valve inlets are point-symmetrically formed with respect to the central axis. A discharge valve outlet and the discharge valve inlets communicate with each other. A flow of fuel from a pressurization chamber to a fuel discharge port is restricted by a discharge valve member capable of closing the discharge valve outlet. The relief valve outlet and the relief valve inlets communicate with each other. A flow of fuel from the fuel discharge port to the pressurization chamber is restricted by a relief valve member capable of closing the relief valve outlet. | 01-28-2016 |
| 417441000 | For serial control of pump fluid (e.g., throttle valve) | 6 |
| 20090291006 | Fuel pump having plunger and fuel supply system using the same - A delivery valve is connected to a discharge passage, through which fuel in a compression chamber is discharged. The delivery valve is screwed to a mount hole formed in the cylinder. A communication passage is formed in a body to extend through the sidewall between a screwed part in which the mount hole and the body are screwed to each other, and a gasket. A small clearance is formed between an inner peripheral surface of the mount hole and an outer peripheral surface of the body. The communication passage provides communication between a fuel passage downstream of a valve seat member and the clearance. The clearance communicates with the suction chamber through a return passage formed in the cylinder. | 11-26-2009 |
| 20130209296 | Hydraulic Oil Cylinder, Correlative Device Thereof, Hydraulic Cushion System, Excavator And Concrete Pump Truck - A hydraulic oil cylinder has a cushion collar, which is sleeved in the cushion position of a piston rod and can axially slide along the piston rod. In the oil cylinder cavity between an oil hole of the rod cavity and the terminal position of the piston end surface of the rod cavity during the piston extending movement, a sealing end surface of the rod cavity is provided, which can block the cushion collar and contact with the first end surface of the cushion collar to form a sealing surface. At least a throttle oil channel is provided between the cushion collar and the piston rod. | 08-15-2013 |
| 20130302194 | HIGH-PRESSURE PUMP - A high-pressure pump ( | 11-14-2013 |
| 20140003982 | PUMP HAVING A THROTTLE | 01-02-2014 |
| 20140147315 | Piston Pump for Delivering Fluids, and Associated Vehicle Brake System - A piston pump for delivering fluids comprises a piston, a cylinder element and a pressure chamber which is arranged between an inlet valve and an outlet valve and is closed by a cover, wherein means for throttling the fluid flow are provided in the fluid flow downstream of the outlet valve, and a vehicle brake system has a piston pump of this type. The throttle means comprises a movable annular disc which is guided on the cylinder element and the internal diameter of which is adapted to the external diameter of the cylinder element, wherein the axial travel of the annular disc sets a variable first throttle cross section. | 05-29-2014 |
| 20140147316 | Piston Pump for Delivering Fluids and Associated Vehicle Brake System - The disclosure relates to a pistol pump for delivering fluids comprising a piston, a cylinder element, and a pressure chamber arranged between an inlet valve and an outlet valve, The pressure chamber is closed off by a cover. The outlet valve comprises a closing body, a preload device which acts on the closing body, and a supporting mechanism configured to support the preload device. The outlet valve is arranged on the outer circumference of the cylinder element and adjusts a fluid flow conducted through at least one outflow opening between the cover and the cylinder element. The closing body is configured as a movable annular disk guided on the cylinder element, the inner diameter of which annular disk is matched to the outer diameter of the cylinder element. | 05-29-2014 |
