Abstract: The invention relates to a fuel pump assembly for a motor vehicle, which can be upstream of a fuel pump of the motor vehicle in a fuel line of the motor vehicle, having a pump housing and a pump device arranged thereupon, by means of which fuel can be pumped into and/or through the pump housing when the pump device is in the active state thereof, wherein the pump device has at least one stroke piston pump having an inlet valve and an outlet valve which are opened and closed in alternation by pressure activation when the pump device is active. In order to provide a fuel pump assembly which enables a very energy efficient operation of a motor vehicle thereby equipped, according to the invention the inlet valve and the outlet valve are held in the open positions thereof when the pump device is inactive.

Abstract: A pump cartridge which has a polymer shell with moveable cores inserted from each end. The polymer shell contains perpendicular passages along the top for connection of fluid supply and prime chambers. Statically mounted elastomers adjacent to perpendicular passages provide sealing around movable cores. Fluid moves by translation within the pump cartridge by filling the cavity volume between the oblate ends of the moveable cores with a liquid and matching the rotation angle and translation position of advancing left moveable core with retreating right moveable core, maintaining equivalent volume. Both moveable cores can be directed toward one another or one moveable core can remain stationary while the other advances to extrude fluid. Pump cartridge rotation changes the angle of the fluid exit passage.

Abstract: To provide a pump device for lubricant which is downsized and reduced in cost due to a simplified decompression structure.

Abstract: A pump element includes a pump element housing defining a pump chamber having an inlet and an outlet, and at least a first movable element movable in the pump chamber between a first and a second position. During a movement of the first movable element in the direction from the first to the second position, a flow resistance of a flow path from the first movable element through the inlet is larger than a flow resistance of a flow path between the pump element housing and the first movable element. During a movement of the first movable element in the direction from the second position to the first position, a flow resistance of a flow path from the first movable element through the outlet is smaller than a flow resistance of the flow path between the pump element housing and the first movable element. Thus, during a reciprocating movement of the first movable element between the first and the second position, a net flow through the outlet takes place.

Abstract: A drive device, comprising a housing, a rod, a limiting device, a sliding block, a rotating block, a pair of springs, a pair of first grooves, and a second groove. The rod passes through the sliding block, an axis is disposed on the sliding block, the rotating block is disposed on the axis, the springs are disposed on both sides of the rotating block, the top of the spring is contacted with one side of the rotating block, the first grooves are disposed on one side of the rod opposite to the housing, the second groove is disposed on inner side of the housing opposite to the first groove, a middle part of the second groove is lower than other parts thereof, one end of the rotating block slides in the second groove, and the other end of the rotating block slides in and between the first grooves.

Abstract: A pressurisation pump is provided comprising a first plunger and a second plunger, each plunger being reciprocable within a respective plunger bore defined by a housing, wherein the first and second plungers together with the bores define, at least in part, a pumping volume. The pump also includes an inlet port and an outlet port. An end of the first plunger is arranged to cover the inlet port during a pump delivery stage in which fluid is displaced from the pumping volume and an end of the second plunger is arranged to cover the outlet port during a pump fill stage in which fuel is drawn into the pumping volume. The end of the first plunger and the end of the second plunger are arranged to cover the inlet port and the outlet port respectively during a pump transfer stage during which the pumping volume is maintained.

Abstract: A device for conveying a mixture of substances including at least one mixture component predominantly having a viscous consistency and at least one mixture component predominantly having a solid, particle-like consistency, includes a delivery cylinder having perforations over a portion of a lateral wall thereof and configured to separate, through the perforations, at least one of the mixture components from the mixture of substances. The delivery cylinder is connected, via a pipeline provided on an outside of the perforated lateral cylinder wall, to a processing station for the separated at least one mixture component. A material feed space is connected to an inlet side of the delivery cylinder. A delivery line is connected to an outlet side of the delivery cylinder. A delivery piston is reciprocatable through the material feed space and the delivery cylinder.

Abstract: A piston pump includes a pump mechanism for changing a volume of a pump chamber to move a piston in a housing, and a feed mechanism that has a feed ring attached to a circular groove portion of the piston to be slaved with a movement of the piston. The feed mechanism is located in a suction passage from a suction port to a pump chamber, and the piston has a flange portion protruding radially outwardly. An inner peripheral surface of the feed ring has an inner-diameter enlarged portion extending radially outwardly to have an enlarged passage portion between the inner peripheral surface of the feed ring and the outer peripheral surface of the piston, and a valve portion for opening and closing a suction passage is constructed of an end portion of the inner diameter enlarged portion of the feed ring and the flange portion.

Abstract: A pump for a printing press includes a plunger within a cylinder to be rotatable and reciprocatable and having a cutaway portion at its distal end, and a constant-speed motor for rotating and reciprocating the plunger. The plunger and the output shaft of the motor are radially offset relative to each other and inclined with respect to each other. The output shaft of the motor is coupled to the plunger via a transmission mechanism which includes an arm and a connection member. The arm is connected to, for example, the plunger, and the connection member is connected to, for example, the output shaft of the motor. The arm and the connection member are connected with each other at an eccentric position in such a manner that the arm and the connection member can displace relative to each other in the radial direction and can change the intersecting angle therebetween.

Abstract: For the purpose of providing a thin pump designed to decrease the number of parts, the pump is provided with a rectangular parallelepiped cylinder (3) and a piston located inside of the cylinder, wherein the piston (4) reciprocates and oscillates in the cylinder (3) to vary capacity of the pump chamber (12) and to make the intake port (5) and the outlet port (6) open alternately, so that fluid is sucked from the intake port (5) into the pump chamber (12), compressed and discharged from the outlet port (6).

Abstract: A fluid transfer apparatus utilizing a slanted cain disk to oscillate and rotate a set of pistons arranged in a circle. Channels associated with the pistons and piston housing effect the transfer of fluid from a first location to a second location, as well as the pressurization or depressurization of the fluid, during movement of the pistons. The apparatus can be used as a high-pressure fluid pump, a fluid-powered motor, a fluid distribution valve, or another fluid transfer device.

Abstract: An improved displacement pump is provided with flow path means preventing hysteresis-causing bubbles from accumulating in piston clearances.

Abstract: A valveless positive displacement pump with a closed end cylinder has fluid inlet and outlet ports adjacent to the closed end. A piston is reciprocally and rotatively driven in the cylinder. The piston is provided with crisscrossed helical slots formed thereon which communicate specifically with the inlet and outlet ports for pumping fluid through the positive displacement pump. The piston is rotated by a drive shaft connected to a motor and reciprocated by an cam actuator mechanism cooperating with the drive shaft.

Abstract: A variable rate pump including a distributor member rotatable within a sleeve. The distributor member is provided with a bore within which a pumping plunger is reciprocable under the influence of a first cam lobe and a second cam lobe. A valve is provided for selecting whether fuel is supplied due to the motion of the plunger under the influence of the first cam lobe or the second cam lobe. An arrangement is also provided in which the distributor member carries first and second plungers each reciprocable under the influence of respective cam lobes. A valve is provided for selecting whether the fuel is supplied by the first plunger or by the second plunger.

Abstract: The present invention provides a mechanically operated traveling valve for use in a sucker rod pump. The valve includes a cylindrical housing, a base positioned in the bottom of said housing which contains a first portion of a sliding shear seal, and a piston positioned within said housing above said base which contains a second portion of the sliding shear seal. The valve is operable between open and closed positions by reciprocal action of a sucker rod on the piston which opens and closes the sliding shear seal.

Abstract: A rotary-type fluid energy convertor comprises a pair of cylindrical body members, a pintle inserted into the cylindrical body members and having a cylindrical central portion between the body members, a cylinder barrel mounted on an outer periphery surface of the central portion of the pintle, the cylinder barrel being provided with a plurality of spaces isometrically arranged in radial directions thereof, a plurality of bushings fitted into the spaces, a rotary body mounted to the body members to be rotatable and having an inner periphery sectioned into a plurality of flat surface portions against which the top flat portions of the bushings closely abut, respectively, so as to form pressure chambers therebetween, and high and low pressure side fluid passages formed between the cylinder barrel and the cylindrical portion of the pintle.

Abstract: In a plunger-operated hydraulic pump, a cylinder has an ejection port extending from its upper end portion with an ejection valve provided at the ejection port. A piston and a plunger fitted in the cylinder are urged towards an eccentric cam by a first return spring and a second return spring which is stronger than the first return spring, respectively. The cylinder has a suction port in its lower end portion in such a manner that it is not closed by the plunger, so that the suction valve is opened by the downward stroke of the plunger, and during suction, the inflow resistance of the suction valve is minimized. Further, in the hydraulic pump, a plurality of cylinders are arranged at equal angular intervals so that the vibrations due to the reciprocations of the plungers are canceled by one another, thereby greatly suppressing the vibration of the cylinder block.

Abstract: A pneumatically operated metering pump having in a single cylinder, a driven piston and a slave piston that operates as a sliding valve for admitting fluid into the pump and drawing it into the cylinder between the two pistons so the next downward stroke of the master piston will force the fluid from the discharge port.

Abstract: The present invention pertains to a pump, in which two pistons moving in the same direction in a common cylinder bore are provided to generate the suction intake and pressure, discharge effects as well as for control. Both pistons are held by fastening members to perform a lifting movement, and one of the pistons is a control piston for performing a constant lifting movement, while the other piston is a pump piston for performing a variable lifting movement. The difference in the lifts, multiplied by the cross section of the cylinder bore, determines the delivery volume of the pump. A braking force to the oscillating piston eliminated and the velocity of discharge of the medium to be delivered is increased by providing a member 8, whose longitudinal extension between fastening members of the two pump pistons is variable during one pump cycle so as to generate the difference between the heights of lift of the two pistons that are rigidly connected to said fastening members.

Abstract: A fuel injection pump for internal combustion engines comprising a pump plunger displaceable in a pump cylinder for delivering fuel to a plurality of injection locations, and elements for controlling fuel injection quantity. The controlling elements include a relief channel in the pump plunger for communicating a pump working space defined by the pump plunger with a relief chamber, an outlet port on an outer surface of the pump plunger for communicating the relief channel with the relief chamber, at least two connecting cross-sections of different shape for communicating the relief chamber with the outer port, and a slide valve displaceable along the outer surface of the plunger and having a control edge for controlling flow of fuel through the connecting cross-sections during a delivery stroke of the pump plunger.

Abstract: A lubricating device and method in which a lubricant shot is generated by a supply of lubricant and air, the later being activated before, during and following the dispersing of the lubricant shot. The air supply travels two paths; on leads to a piston chamber and causes a piston assembly to move which, in turn, effects lubricant dispersing; the remaining air path permits air to exit the nozzle device to mix with a direct lubricant to a desired area of lubrication.

Abstract: A multi-cylinder gas engine featuring a unique method of gas fuel intake and cylinder exhaust gas scavenging and recharging. It is a three cylinder opposed piston two-stroke cycle engine combined with a three cylinder opposed piston, sequentially ported, valveless pump to produce a three-stroke cycle engine effect. The engine has a positive compression, power, and recharge strokes, but no actual exhaust stroke. Exhaust is accomplished by pressure "blowdown" and by displacement scavenging of the cylinders during the recharge stroke. Operation may be based on the Otto cycle (gasoline or fuel, glow plug or spark ignition) or the diesel cycle and may utilize one or more carburetors or fuel injection. The firing order is sequential, in the same direction as crankshaft rotation, equally spaced (120 degrees), and results in three power strokes of approximately 120 degrees duration per revolution. A pump is also described.

Abstract: A servomechnism made up of a relatively small number of components has a pintle that is moved back and forth by a hydraulic actuator, an input member disposed opposite to the pintle and capable of reciprocating parallel with the pintle, a spool capable of reciprocating parallel to both the input member and the pintle, a pair of idle gears pivoted to the spool, and a hydraulic circuit. The input member has a rack opposite to a rack formed on the pintle. The spool is mounted between these racks. The idle gears are in mesh with the racks. When the input member is moved to shift the spool out of its neutral position, the actuator is unlocked to return the spool to its neutral position.

Abstract: A dispensing pump includes an outer cylinder and an inner piston which cooperate in defining a pump chamber. The cylinder includes an inlet port and an outlet port which are sequentially opened and closed by the piston. In addition, a vent for the container interior to replace discharge product with air is also adapted to be opened and closed incident to the movement of the piston. Sealing rings are provided between the piston and cylinder, the location of which, determines the amount of product and air drawn into the pump chamber as well as the characteristics of the dispensing pattern of the product discharged by the pump. During part of the suction stroke as well as the compression stroke, both the inlet and outlet ports are simultaneously closed by the piston thereby respectively creating a predetermined negative pressure and positive pressure within the pump chamber.

Abstract: A side entry down-hole pump for oil wells which relies upon gravity rather than suction to receive incoming oil. A pump barrel is plugged at its bottom end and is anchored in the well. A pair of inlet slots in the side of the pump barrel admit oil to a pump chamber formed in the barrel between the inlet slots and the closed bottom end of the barrel. A pumping element is formed by a plunger assembly which includes a cup body carrying a pair of cup shaped seal rings. A pumping string reciprocates the pumping element up and down and provides a flow passage through which oil is pumped to the surface. During upstrokes, the seal rings move above the inlet slots so that oil flows by gravity through the slots and into the pump chamber. Downstrokes effect compression of oil in the pump chamber to pump it through the flow passage and through a check valve which prevents downflow of oil. A pair of discharge slots in the pump barrel relieve pressure created by oil trapped above the seal rings.

Abstract: This disclosure is directed to a method and combined apparatus for converting or translating the immense potential energy of the deep sea water into useful work by providing a jointly enclosed environment in a column or mass of a fluid in which a container or vessel is maintained under a pressure which is less than that of the pressure exerted by the deep sea water. The apparatus consists of two, in all respects entirely independent, machines with individual performances and with entirely separated energy consumptions operatively connected to achieve the end result.A fluid activated work producing machine is disposed so as to be actuated by the continuous differential in pressure between the pressure exerted by the continuous deep sea water and the low pressure of the environment in an associated container or vessel.

Abstract: A porting and ducting arrangement for a pair of adjacent hollow cylinders includes respective pluralities of passages extending longitudinally in the walls of the cylinders. Each passage is provided with a port in communication with the interior of the associated cylinder. Plural recesses in the end of the cylinders or in a cover are each in communication with a separate passage or group of passages when the cover is applied to the cylinders. There are a pair of such recesses thereby associated with each cylinder and at least one recess of each pair is in communication with a recess of the other pair via duct means in the cover. Gasket means is retained between the cylinders and the cover to seal each recess of each pair of recesses with respect to the other recess of the pair.

Abstract: A fuel injection pump for supplying fuel to the cylinders of the internal combustion engine comprises a housing, a cylindrical sleeve inserted in the housing and provided with a single filling opening communicated with a fuel-feeding passage, and a piston rotatably and reciprocally slidable in the cylindrical sleeve. An end face of the piston encloses with the closing element of the pump a pump operation chamber which is filled with fuel from the filling opening through a number of longitudinal grooves formed in the piston. The longitudinal grooves are in communication with a central relief opening by means of a plurality of radial connecting passages formed in the piston.

Abstract: A wall mounted soap dispenser made of plastic is described. The dispenser includes a hand-operated pump which dispenses liquid soap under pressure and which can be manufactured inexpensively. A disposable container of liquid soap is inserted in the dispenser to refill the dispenser. The pump has on its top a pan to collect liquid spilled as the disposable container is inserted. The pump and container are enclosed in a plastic housing which hinges from a plastic wall plate. A plastic latch with plastic key is used to lock the housing to the wall mounting plate. The pump mechanism uses a piston of two sections of different diameter and corresponding piston chamber of two sections of different diameter. There is an adjustable piston stroke length limiting mechanism. The piston is attached to the lever which moves the piston by means of a crossbar on the end of the piston rod. The crossbar is inserted in a slot in the lever and then turned to cross the slot.

Abstract: A piston pump includes a cylinder with a bore receiving the piston. The piston forms a central passage leading to a variable volume chamber and a check valve is disposed in the central passage. In addition, the cylinder includes a pair of ports which selectively communicate with the variable volume chamber. The pair of ports and the central passage communicate a reservoir with the variable volume chamber.

Abstract: A fluid-transfer system has two pistons movable within a barrel so that the ends of the piston faces can move together or apart, the barrel having at least two openings therein for transfer of fluid into and out of said barrel. The pistons can be controlled manually, mechanically or by computer to draw fluid from one or more reservoirs into the barrel and transfer the selected fluid in selected quantity into a chamber for storage or for reaction or analysis. The system is particularly useful for transfer of fluid from a selected chamber to another selected chamber, for mixing fluids, and for carrying out multiple tests on blood taken from a patient or from a plurality of patients under the control of a computer, which can accept programs for carrying out specific procedures.

Abstract: A pump system having two moving parts consisting of a cylinder with a piston therein defining a pump chamber. An inlet part communicates with a dip tube which extends into a container and permits the product in the container to pass into the pump chamber. An outlet port allows for the product thus drawn to be dispensed from the pump chamber. The pump is actuated by pressure directed axially on the piston, forcing it into the cylinder. Fitted with a return device the piston is allowed to reciprocate in the cylinder alternating between a suction and compression stroke. During the suction stroke product is drawn into the pump chamber by way of the inlet port while the compression stroke provides for the dispensing of the product thus drawn via the outlet port. The system is equipped with passages and channels sufficient to accomplish the operation of drawing and dispensing the product in addition to providing for the venting of the container.

Abstract: A fuel injection pump for an air-compressing fuel-injected internal combustion engine which includes a first pump piston arranged in each pump cylinder for regulating a fuel control bore of a pump working chamber. A control element cooperable with the pump piston controls a flow of fuel in the injection pump. The control element is provided with a bore arrangement by way of which the pump working chamber is connected with a pump pressure chamber. An intermediate chamber is arranged between the pump working chamber and the pump pressure chamber from which two separate feed lines terminate into the pump pressure chamber in such a way that a feed stream of fuel is conducted by way of the first feed line arranged in the control cylinder with temporal interruption by the control element but that this feed stream is constantly conducted by way of the second feed line which acts as a throttle.

Abstract: A fuel injection pump for compressed air injected internal combustion engines with a pump piston and with a control slide valve member coaxially arranged to each other in a given pump cylinder, of which the pump piston controls a fuel control bore in the pump working space and actuates the control slide valve member which is under the force of a spring; the control slide valve member which rests continuously on the pump piston and possibly may be made in one piece therewith includes in its lower half facing the pump piston a recess, preferably rounded-off, that extends in the direction of movement of the control slide valve member and that terminates at a slight inclination in the direction of the outer circumference of the control slide valve member; a bore arrangement is provided in the housing part in which the control slide valve member is longitudinally displaceably guided by means of which the pump pressure space is connected with the pump working space alternately by way of a bore arrangement in the co

Abstract: This invention is a manually operated liquid dispenser designed in particular to dispense heavy soaps like hair washing shampoo. The dispensers which are presently available on the market are unsuitable for these reasons, (a) too expensive to manufacture, (b) have too many parts, (c) plug up the dispensing hole in a very short time. This dispenser has a very positive dispensing action and it positively vacuums out the dispensing hole during the return stroke. All parts can be molded from plastic or other moldable material and used without machining. The number of parts used to make this dispenser is far less than what is presently used in such dispensers. This dispenser is particularly suitable for domestic use. It has no flexible membrane or any spring loaded valves.

Abstract: A piston type fluid pump structure providing a selective variable operating fluid displacement, and including a piston having an operable travel, within a cooperable cylinder bore, through a pump stroke which may be of fixed length, a fluid supply port being provided which communicates with the interior of the cylinder bore when the piston is in a retracted position and a fluid outlet port communicating with interior of said bore through which fluid therein may be discharged during such pump stroke, an expansion chamber being provided in communication with the cylinder bore adjacent the discharge port therein, the effective volume of the expansion chamber being selectively variable whereby the output displacement of said pump structure may be varied by controlling the volume of said expansion chamber, and therewith the amount of fluid received therein during a pump stroke.