Class / Patent application number | Description | Number of patent applications / Date published |
417443000 | Pressure responsive distributor opened responsive to pumping member position | 23 |
20120034115 | METHOD OF OPERATING A PUMP/MOTOR - A method of operating a pump/motor includes pumping working fluid into a high-pressure manifold with a first piston/cylinder assembly while the piston in the first piston/cylinder assembly is displaced from a bottom dead center position to a top dead center position, and transferring working fluid from the high-pressure manifold to the cylinder of a second piston/cylinder assembly to displace the piston of the second piston/cylinder assembly from a top dead center position to a bottom dead center position, thereby imparting torque on a cam and an output shaft, within the same complete revolution of the cam and the output shaft in which working fluid is pumped into the high-pressure manifold by the first piston/cylinder assembly. | 02-09-2012 |
20130156620 | FUEL INJECTION PUMP INCLUDING A VARIABLE PRESSURE COMPARTMENT - The present invention relates to a fuel injection pump having a variable pressure chamber which can adjust a fuel injection timing according to each engine load with a simple structure and a lower manufacture cost compared to the conventional injection pump without a separate apparatus for moving a barrel as well as not modifying a shape of a plunger. | 06-20-2013 |
20130209297 | PUMPING DEVICE - A pumping device compresses fluid, provides a vacuum, or both compresses fluid and provides a vacuum. A pumping device may be used to force gas through a sieve bed, draw gas out of a sieve bed, or both force gas through a sieve bed and drawing gas out of a sieve bed. A pumping device may be operated at high speed to provide a high fluid flow rate with a small pumping device. | 08-15-2013 |
20130209298 | VALVE, IN PARTICULAR OF A HYDRAULIC PISTON PUMP - In a valve, in particular of a hydraulic pixton pump, includes a valve seat, a valve closing element, and a positioning mechanism. A valve opening is formed in the valve seat. The valve seat also has a front side and a rear side. The valve closing element is arranged on the front side of the valve seat in order to open and close the valve opening as desired. The positioning mechanism is configured to hold the valve closing elementrelative to the valve seat. The positioning mechanism is arranged on the rear side of the valve seat and is connected to the valve closing element through the valve opening. | 08-15-2013 |
20130266465 | HIGH-PRESSURE PUMP - A high-pressure pump includes a plunger capable of reciprocating, and a housing having a pressurizing chamber in which fuel is pressurized by the plunger, and a fuel chamber through which the fuel flows toward and from the pressurizing chamber. The pump includes a spring that biases the plunger so as to increase the volume of the pressurizing chamber, and a spring seat that is fixed to the housing and is in contact with one end of the spring. A first space that communicates with the fuel chamber via a fuel passage is provided between the bottom of the spring seat and the housing, and a top face of the bottom exposed to the first space is covered with a heating insulating member. | 10-10-2013 |
20130287611 | DOUBLE ACTING REFRIGERATION COMPRESSOR - The refrigeration compressor is a double-acting refrigeration compressor, comprising a piston which is freely guided on two cylinder sections that are opposite each other and that cannot be moved relative to each other, and which has a flow channel that extends internally through the piston, wherein each cylinder section and the piston have at least one check valve along the flow channel, wherein the check valves are arranged in such a way that the flow directions thereof are oriented in the same direction. | 10-31-2013 |
20140161654 | Pump, In Particular Pneumatic Pump - The invention relates to a pump comprising a housing ( | 06-12-2014 |
20140322051 | MULTI-FUNCTIONAL MODULAR PUMP - Embodiments relate to a multi-functional, hand-operated, modular hand pump apparatus capable of drawing in a pumping medium through an intake point, nozzle, filter cap, or combination thereof into a pump housing by means of a plunger rod assembly and discharging the pumping medium through a plurality of discharge points, wherein the entire apparatus is extendable by attachment of a plurality of extension units and can be easily assembled and disassembled without tools. | 10-30-2014 |
20150017036 | RECIPROCATING SUBSURFACE PUMP - A reciprocating pump includes an open-bottomed barrel adapted for attaching to the lower end of a production tubing string; a seating assembly having a cylindrical bore and adapted for mounting to a seating nipple at the upper end of the barrel; and a plunger assembly adapted for attaching to the lower end of a sucker rod string. The plunger assembly includes concentric upper and lower plunger sections interconnected by a double-valve, ported valve cage. The plungers are sized for sealing reciprocating engagement within, respectively, the bore of the seating assembly and the bore of the pump barrel. The lower plunger and the ported valve cage define a production chamber within the pump barrel. The upper plunger has ports allowing fluid flow from the tubing into the production chamber. Optionally, the upper plunger and the barrel may be provided with flush ports facilitating flushing of the pump to eliminate vapor lock. | 01-15-2015 |
20150139834 | PUMP FOR METERING AND DISPENSING A LIQUID OR VISCOUS PRODUCT - The present invention relates to a pump for metering and dispensing a liquid or viscous product. | 05-21-2015 |
20150308423 | CYLINDER APPARATUS - Apparatus configuration in which: a piston ( | 10-29-2015 |
20150369224 | LINEAR COMPRESSOR - A linear compressor is provided. The linear compressor may include a shell including a suction inlet, a cylinder provided in the shell to define a compression space for a refrigerant, a piston reciprocated in an axial direction within the cylinder, a discharge valve provided on or at one side of the cylinder to selectively discharge the refrigerant compressed in the compression space, at least one nozzle disposed in the cylinder to introduce at least a portion of the refrigerant discharged through the discharge valve into the cylinder, and a passage to guide the refrigerant discharged from the discharge valve to the at least one nozzle. | 12-24-2015 |
20150369225 | LINEAR COMPRESSOR - A linear compressor is provided that may include a shell including a suction inlet, a cylinder provided in the shell to define a compression space for a refrigerant, a piston reciprocated in an axial direction within the cylinder, a discharge valve provided at a first side of the cylinder to selectively discharge the refrigerant compressed in the compression space, at least one nozzle, through which at least a portion of the refrigerant discharged through the discharge valve flows, the at least one nozzle being disposed in the cylinder, and at least one expansion portion that extends from the at least one nozzle to an inner circumferential surface of the cylinder, the at least one expansion portion having a flow cross-section area greater than a flow cross-section area of the at least one nozzle. | 12-24-2015 |
20150369226 | PUMPING DEVICE - A pumping device includes a pump and a connector. A piston is slidably disposed in a container of the pump. A pumping rod is connected with the piston with an end, and the other end of the pumping rod extends outward. The container has an opening at a bottom thereof, and a first connecting portion is formed around the opening The connector has a cavity, an inlet channel, and an outlet channel. The inlet channel and the outlet channel communicate with the cavity respectively. The connector has a second connecting portion to be engaged with the first connecting portion to allow the cavity communicating with the opening of the container. The inlet channel only allows fluid entering the cavity, and the outlet channel only allows fluid leaving the cavity. | 12-24-2015 |
20150377224 | SINGLE PISTON FOUNDATION BAG-IN-BOX (BIB) PUMP - A pump includes a liquid housing having a liquid chamber with a piston/diaphragm assembly arranged therein that responds to a suction stroke and draws liquid into the liquid chamber, and responds to a pressure stroke and provides liquid from the liquid chamber; and a gas housing having a slide valve assembly separating first and second gas chambers. The slide valve assembly responds to a suction-to-pressure-force at the suction stroke conclusion, changes from a suction-to-pressure stroke state, provides gas from the first to second gas chamber through the slide valve assembly, and provides the pressure stroke so liquid passes from the liquid chamber; and responds to a pressure-to-suction-force at the pressure stroke conclusion, changes from the pressure-to-suction stroke state, provides gas from the second chamber through the slide valve assembly, and provides the suction stroke so liquid is drawn into the liquid chamber. | 12-31-2015 |
20160017875 | LINEAR COMPRESSOR - A linear compressor is provided that may include a shell in which a discharge port may be provided, a cylinder disposed in the shell to define a compression space for a refrigerant, a piston disposed to be reciprocated in an axial direction within the cylinder, a discharge valve disposed on or at one side of the cylinder to selectively discharge the refrigerant compressed in the compression space, a valve spring coupled to the discharge valve to provide a restoring force, and a stopper coupled to the valve spring to restrict deformation of the valve spring. The stopper may include a guide recessed in a direction in which the valve spring is deformed to reduce an impulse between the stopper and the valve spring. | 01-21-2016 |
20160017876 | LINEAR COMPRESSOR - A linear compressor is provided. The linear compressor may include a shell including a discharge outlet, a cylinder provided in the shell to define a compression space for a refrigerant, a frame to fix the cylinder to the shell, a piston reciprocated within the cylinder in an axial direction, a discharge valve disposed on or at one side of the cylinder to selectively discharge the refrigerant compressed in the compression space, a discharge cover coupled to the frame, the discharge cover having at least one chamber to reduce pulsation of the refrigerant discharged through the discharge valve, and a valve spring disposed on the discharge cover to provide a restoring force to the discharge valve. The discharge cover may include a cover body having a discharge hole, through which the refrigerant discharged through the discharge valve may be discharged outside of the discharge cover, and a guide passage defined in the cover body to guide at least a portion of the refrigerant discharged through the discharge valve into the at least one chamber. | 01-21-2016 |
20160032920 | CHECK VALVE WITH IMPROVED RESPONSE TIME - A check valve with improved response time comprises a valve member which has a central portion of a substantially convex shape and a guide portion that surrounds the central portion. The central portion has a central convex curvature extending towards the outlet port of the check valve, in the direction of the fluid flow. The guide portion has a weight to area ratio that is smaller than the weight to area ratio of the central portion. Such a check valve has an overall reduced weight of the valve member allowing a faster response time when the valve switches between its closed and open positions. | 02-04-2016 |
20160061196 | VACUUM MACHINE, COMPRESSOR, AND PISTON - A vacuum machine includes: a crankcase; a cylinder body fixed to the crankcase; a cylinder head fixed to a distal end of the cylinder body; and a piston reciprocating within the cylinder body, wherein the piston includes: a piston rod; a piston head fixed to a distal end of the piston rod and defining a chamber in cooperation with the cylinder body and the cylinder head; and a check valve arranged within a space formed between the piston rod and the piston head, the piston rod and the piston head each includes a through-hole communicating with the space, and the check valve is elastically deformable within the space so as to open and close one of the through holes of the piston rod and the piston head. | 03-03-2016 |
20160090956 | DIESEL FUEL PUMP - A diesel fuel pump includes a cylinder provided to a housing, and a plunger configured to form a cylinder chamber in conjunction with the cylinder by being reciprocably provided to the cylinder. The plunger compresses fuel inside the cylinder chamber when the plunger moves in one direction during a reciprocating motion, and introduces the fuel into the cylinder chamber when the plunger moves in another direction. A ball-type non-return valve includes: a spherical ball; a valve seat having a through-hole provided with a truncated side surface-shaped inner surface; and a compression coil spring provided inside the cylinder chamber, and having one end portion in contact with the ball and another end portion in contact with the cylinder. A value of a winding diameter of the compression coil spring is reduced at the one end portion. | 03-31-2016 |
20160097378 | HIGH-VISCOSITY LIQUID FEEDING BOOSTER PUMP - The present disclosure relates to a high-viscosity liquid feeding booster pump. The booster pump includes: a body having an actuator mounted at one side thereof and a discharge valve formed at the other side thereof, the body being formed internally with a chamber; a plunger configured to be inserted into the body, and advanced or retracted relative to the body by the operation of the actuator to generate a compressive force or a suction force; and a charge valve disposed at an intake port formed at an upper portion of one side of the body in such a manner as to be spaced apart from a discharge valve, and configured to be opened or closed in cooperation with the advancing or retracting operation of the plunger to supply a fluid to the inside of the body or interrupt the supply of the fluid. | 04-07-2016 |
20160097384 | RECIPROCATING PUMP - A reciprocating pump includes a pump chamber; a suction port which enables a liquid to be suctioned into the pump chamber; a discharge port which enable a liquid in the pump chamber to be discharged; a plunger which is capable of reciprocating in the pump chamber by a motor; check valves are disposed between the pump chamber and a flow route on the suction port side and a flow route on the discharge port side, are openable and closable in response to a change in a liquid pressure in the pump chamber, which is produced due to the reciprocating of the plunger, a detection device that is able to detect a period of time during which the check valve is in an opened state or in a closed state in a predetermined cycle; and an arithmetic device that performs an arithmetic operation to obtain pump volumetric efficiency or a flow rate based on a comparison between a period of detection time detected by the detection device and a period of time during which the check valve is in the opened state or in the closed state in the predetermined cycle during normal operation. | 04-07-2016 |
417444000 | Distributor in piston | 1 |
20160032921 | Horizontal Piston Compressor - A horizontal piston compressor is disclosed, including a frame with a cylinder, and a piston reciprocably received in the cylinder. The has piston h an inner chamber and first and second end walls. The piston and the cylinder form a compression chamber for compressing the gas. A valve and an orifice are disposed in the first end wall, and are configured to supply gas from the compression chamber to the inner chamber during a compression stroke of the piston. A gas bearing supports the piston relative to the frame. The gas bearing includes an opening for supplying gas from the inner chamber to a space between the piston and the cylinder such that the gas supplied to the space exerts an upward pressure on the piston. The valve may be a spring-loaded valve, and the orifice may be an orifice insert positioned between the valve and the compression chamber. | 02-04-2016 |