Abstract: A pump body of a high pressure fuel pump defines a compression chamber in fluid communication with a first recess dug in a first outer face. A second recess is dug in a second outer face of the body. An inlet channel opens in a conduit extending between the first recess and the second recess.

Abstract: Embodiments of the present disclosure relate generally to pumps and systems that use a differential pressure gradient to transfer fluids. In one example, the pumps may use available differential pressure that exists due to outside pressure and cabin pressure due to altitude on-board a vehicle such as an aircraft.

Abstract: Fluid pumping system and method provide a pumping chamber with inlet and outlet ports. The pumping chamber is in thermal communication with a thermal system for alternating the gas temperature inside the pumping chamber between heated and cooled states. A first valve controls a first fluid communication between the pumping chamber and the external environment, and a second valve controls a second fluid communication between the pumping chamber and the fluid container. The pumping chamber and the valves cooperate to generate a vacuum and a negative potential pressure of the gas inside the pumping chamber by the effect of the gas temperature alternation when the gas passes from a heated state to a cooled state and by controlling the first and second fluid communications. The generated vacuum and negative potential pressure inside the pumping chamber enable pumping of the fluid from the fluid container inside the pumping chamber.

Abstract: In a bubble lift system 10, a pressurized chamber 21 is provided at an upper end portion of a riser pipe 11, and applies a pressure to an upper portion inside the riser pipe 11 to suppress an increase in the volume ratio of bubbles to a fluid mixture rising inside the riser pipe 11 in a shallow water region. In this configuration, the upper end of the riser pipe 11 is not opened to the atmosphere but is inserted into the pressurized chamber 21 under a high pressure to thereby prevent expansion of the bubbles and gas. In addition, a deaerator 14 for discharging bubbles separated by a centrifugal force is also provided in a middle portion of the riser pipe 11 in a shallow water region to thereby make the bubbles distributed more evenly inside the whole riser pipe 11. Thus, provided are the bubble lift system 10 and a bubble lift method that are efficient and employable even in a deep water region.

Abstract: A double vacuum pump apparatus (Y2) includes positive displacement vacuum pumps (40A, 40B) and lines (52, 60). Each of the vacuum pumps includes a suction port (41) and a discharge port (42), and a pressure detector (80) is provided in the vicinity of the suction port (41) of the double vacuum pump apparatus (Y2). The line (52) connects the discharge port (42) of the vacuum pump (40A) to the suction port (41) of the vacuum pump (40B). The line (60) has an end (E6) and an end (E5) that are connected to the connection line (52), and includes a buffer tube (Z1) and an on-off valve (61) located between the tube (Z1) and the end (E5). A pressure detection signal from the pressure detector (80) is used as an on/off signal for the on-off valve (61).

Abstract: The invention relates to a method of realizing a vacuum in a vacuum chamber. The vacuum chamber is connected to a pumping system shared by a plurality of vacuum chambers. The method includes separately pumping down each vacuum chamber. The invention further relates to n arrangement of a plurality of vacuum chambers connected to a pumping system. In this arrangement, the pumping system is arranged for pumping down each vacuum chamber separately.

Abstract: Liquid water removal apparatus that removes residual liquid water in a fluid conducting system by vaporizing the residual liquid water and drawing the vaporized water from the fluid conducting system. A vacuum pump (a) reduces the atmospheric pressure in the fluid conducting system to vaporize residual liquid water in the fluid conducting system, (b) draws from the fluid conducting system vaporized water, and (c) partially condenses the vaporized water drawn from the fluid conducting system. Vaporized water is conducted from the vacuum pump to a first water vapor condenser where vaporized water is condensed and residual vaporized water is conducted from the first water vapor condenser to a second water vapor condenser where the residual vaporized water received from the first water vapor condenser is condensed.

Abstract: Liquid from a body of liquid is pumped using two liquid columns connected to a sealable conduit containing gas. The liquid columns are also connected to another conduit having a switched valve. Pumping is initiated by extracting gas from the sealed conduit. Liquid exits one of the liquid columns through the switched valve. Lowering of the liquid level in one of the liquid columns moves gas in the sealed conduit. This in turn induces pumping liquid from the body of liquid in another one of the liquid columns. When the liquid level reaches a minimum in the liquid column, the switched valve changes position, blocking a liquid flow from the liquid column and allowing liquid in the other of the liquid column to exit.

Abstract: An automatic pressure-relieving apparatus for a suction pump comprises a pipework provided at the cap. A first rod positioned in the pipework has an upper sealing ring arranged around the top periphery thereof, whereby the first rod can detachably seal the upper opening of the pipework. Moreover, the first rod is coupled with a second rod, which is pierced through the lower opening of the pipework and extending into the oil reservoir of the cylinder. The second rod further has a sealing component arranged at the periphery thereof for moving. upward and detachably sealing the lower opening of the pipework. Also, a control device is fastened to the bottom of the second rod so that when the raising oil surface lifts a float of the control device, the float can in turn drive the first and second rods to move upward. Thereby, the upper and lower openings of the pipework are opened and closed respectively, and the pressure in the pump can be automatically released through the opened upper opening.

Abstract: A manually operated vacuum pump and refill device includes a body on top with a vacuum pump attached, and a lower portion of the body is arranged with an elastic adapter. The adapter has a central channel in communication with the body. The body includes an inlet in which a water supply is connected. A control valve is arranged on the water supply before it reaches to the body. The vacuum pump is further arranged with a check valve with respect to the body. The body is also arranged with a check valve securely positioned with a C-clip. The check valve is provided with a float moveably within a chamber thereof.

Abstract: A micropump includes a body (10) of semiconductor material, accommodating fluid-tight chambers (32), having an internal preset pressure, lower than atmospheric pressure. The fluid-tight chambers (32), sealed by a diaphragm (35) that can be electrically opened, are selectively openable using a first electrode (37) and second electrodes (38), accommodating between them portions of the diaphragm (35).

Abstract: An enclosure includes interconnected panels defining an internal space. The panels define an air inlet for admitting cooling air to the enclosure and an air outlet for exhausting cooling air from the enclosure. The panels configure the internal space to promote a linear air flow velocity near the inlet (or outlet) that is greater than a respective velocity near the outlet (or inlet) for a given volumetric flow rate of air through the enclosure. A portion of a cover panel may be angularly oriented to define an increasing transverse cross sectional area between the inlet and outlet, to cause air flowing into the enclosure to change in linear velocity as it traverses the enclosure. The cover panel may have separate portions positioned at different heights such that the cross-sectional areas near the outlet and inlet differ. The fan may be angularly oriented for better removal of heated cooling air.

Abstract: A liquid pumping device includes a barrel, a cylinder, a conducting rod, a piston, an operation lever, and a cover. Thus, the liquid pumping device is operated automatically by the power source or operated manually by the operation lever to suck the liquid from the suction pipe into the inside of the barrel rapidly, so that the liquid pumping device is operated automatically and manually, thereby greatly enhancing the versatility of the liquid pumping device.

Abstract: The present invention is an apparatus for the transfer of fluid or fuel, from a reservoir to a container, which may be a tank from which the liquid will be used or a tank in which the liquid will be temporarily stored. The apparatus includes a compliant base element, preferably having a tapered outer diameter and two holes therethrough. The first hole is adapted to sealingly receive one end of a length of tubing whereas the second hole is adapted to receive the intake end of a hand-operated vacuum pump. Upon insertion of the opposite end of the length of tubing into a liquid-filled reservoir, and insertion into and sealing of the compliant base with a container or tank, the pump may be operated to negatively pressurize the tank or container and initiate the flow of liquid from the reservoir to the tank or container.

Abstract: A manual/pneumatic oil pumping device having a housing defining therein an oil reserving space and an upper cover. A floating board is disposed in the oil reserving space. The upper cover is equipped with a manual air sucking mechanism, a pneumatic air sucking mechanism and an oil sucking tube. The pneumatic air sucking mechanism is provided with a controlling unit. The control controlling unit includes a seat body, a valve body, a sleeve and a movable block. The movable block is fitted in the sleeve and has a downward extending projecting post. When the oil is pumped to fill up in the oil reserving space, the projecting post is upward pushed by the floating board to make movable block move upward. At this time, the leakproof washer on the movable block seals the through hole of the seat body and the push pin pushes the valve body away from the through hole so as to block the air sucking passage of the pneumatic air sucking mechanism.

Abstract: One embodiment of the invention encompasses a fluid vacuum system for vacuuming-up discharge fluid from a fluid source without applying a vacuum to the fluid source. The system comprises a discharge conduit, a vacuum source, and a vacuum-breaker. The discharge conduit is in fluid communication with the fluid source. And, the vacuum-breaker connects the discharge conduit to the vacuum source such that the vacuum source applies a vacuum to the discharge fluid without applying a vacuum to the fluid source. Select embodiments are optimized for use with dialysis machines in dialysis clinics. A closed system, preferably a vacuum system, is provided for disposal of noxious odors and fluids.

Abstract: A portable system of inter-connected smaller and larger canisters for near simultaneous vacuum and liquid transfer free from any external power. Captured vacuum in the canisters is employed for waste liquid extraction and a subsequent pressure transfer may take place without any liquid being exposed to the atmosphere. A mechanical manifold is adapted to receive the canisters, and one or more canisters may be physically connected to the manifold and are left in place as a user drives to another site location. An intermediate canister in the system is fitted with either manual or a self tending valve for the vacuum and pressure modes of the system.

Abstract: In a multi story air conditioning system having elevated compressors and varying loads, a suction line oil return arrangement comprising dual parallel suction risers having a pressure relief valve positioned in one to ensure a minimum pressure drop for oil return in the other.

Abstract: A fluid delivery/extracting device is provided for extracting fluid from and delivering fluid to a reservoir of a vehicle. The device includes a cylidrical body formed from a tube, a bottom member and a top member. The top member comprises an annular member and a closure which closes the annular member. A pair of fittings extending through the closure, one of which has a portion extending below the closures top surface. A dip tube is applied to the this fitting and extends nearly to the bottom of the container. A first hose extends from the first fitting outer portion to a reservoir to be filled or emptied and is sufficiently long to extend to the bottom of the reservoir. A second hose extends from the second fitting and is connectable to any vacuum port of a vehicle if the device is to be used to empty the reservoir, or to a supply of pressurized air, if the device is to be used to fill the reservoir.

Abstract: A pump arrangement having a mechanical pump in series with a vacuum compartment on an inlet side of the mechanical pump. The vacuum compartment has a suction line flow connected to the supply of liquid to be pumped and draws that liquid by vacuum to the inlet of the mechanical pump. The mechanical pump includes an outlet for delivering the liquid to be pumped.

Abstract: An apparatus and method of use thereof includes a rechargeable, pre-charged vacuum canister used to remove viscous fluids, e.g., waste oil, from containers such as engine crankcases through an opening, such as a dipstick tube. The self-contained canister is first pre-charged with a near absolute vacuum. Due to the compressibility characteristics of air, conventional, active, continuous pumping techniques, which rely on partial vacuums, do not achieve the pulling force of the near absolute vacuums achieved by the invention. The use of a self-contained, pre-charged near absolute vacuum canister system significantly increases the force applied to the viscous fluid to be extracted. Furthermore, the fluid can be simultaneously contained in a proper disposal container. As a result shortcomings of manual and electric pumping systems are overcome with the added advantage that no external pumping force is required at the site of fluid removal.

Abstract: An automobile coolant extractor/injector comprises a tank assembly, an air pressure control assembly and a hose assembly. The air pressure control assembly creates a vacuum in the tank assembly by using the venturi effect. The air pressure control assembly does this by connecting to a compressed air hose. The air from the air hose flows through a venturi chamber creating a vacuum. The vacuum forces air out of the tank, creating a vacuum in the tank. A transfer hose is also connected to the tank. The transfer hose is inserted into an automobile radiator, and opened. The vacuum in the tank pulls coolant out of the radiator through the transfer hose and into the tank. Coolant is injected or reinjected into the radiator by increasing the air pressure inside of the tank. A Schraeder valve on the tank connects to a compressed air hose. Air flows into the tank through the Schraeder valve until the inside of the tank reaches the necessary air pressure.

Abstract: A wet pump for pumping fish from a first fish receptacle to a second receptacle displaced from the first receptacle.

Abstract: An in-line vapor trap for removing water and/or oil vapor from a compressed air line which includes a manifold having spaced coaxial inlet and outlet openings, a hollow base suspended from the manifold, and replaceable cartridges connecting the manifold inlet to the hollow base and connecting the hollow base to the manifold outlet. A honeycomb structure is disposed in the lower portion of the base within the enclosed volume defined thereby, and cooperates with the base side and bottom walls to define a zone of substantially zero air movement for collection of liquid droplets. A depression in the base bottom wall forms a liquid sump, and a drain opens into the sump for drainage of captured liquid.

Abstract: Liquid-transfer equipment and method for dispensing liquid reagents for chemical assays, which equipment and method provide time-controlled metering of the quantity of liquid dispensed even though the liquid supply reservoir is not pressurized.

Abstract: An evacuator system employed in an evaporative waste recovery system uses an eductor to create a partial vacuum. The partial vacuum is selectively employed to evacuate concentrate and distillate from an evaporator unit for transferal to respective concentrate and distillate containers. A plurality of air operated valves are automatically operated to transfer concentrate and distillate for reuse in a plating process system.

Abstract: A device for the selection, metering and delivery of treatment liquids for industrial laundry washers comprising a plurality of pumping units without positive displacement of pumping members. The pumping action is performed by a correlated combination of applications of pressure and vacuum on columns of the liquid that must be pumped. The delivery or pumping rate may be adjusted by setting on each pumping unit the quantity of the displaced material by sensing the displaced volume.

Abstract: A vacuum pump attached to the top of an enclosed tank situated above a lower liquid level is utilized sequentially to draw liquid from the lower level into the tank and thereafter drain the tank to a useful purpose including a low head turbine generator, irrigation, storage and other useful purposes.

Abstract: Suction apparatus for use in draining fluids from operative wounds or other body cavities includes a housing having a vacuum chamber, at least a portion of which serves as a storage compartment for aspirated fluids. A vacuum pump in the apparatus has an inlet in communication with the vacuum chamber for providing a vacuum therein. The storage compartment has an inlet for introducing aspirated fluid therein, and an outlet is provided for emptying fluid from the compartment. Suitable means are provided on the compartment for measuring the quantity of aspirated fluid collected in the storage compartment.

Abstract: A method for raising liquid from a reservoir to a tank positioned above the reservoir, the liquid being withdrawn from the tank at the same rate that it enters for further utilization. The method involves providing a pressure differential, in part by creating a sub-atmospheric pressure within the tank combined with pressure derived from a head of water above the water supply conduit pipe inlet, to cause the liquid to flow up a conduit connecting the tank and reservoir. The invention also relates to a system for carrying out the method.

Abstract: A method for transferring a liquid, particularly liquid metal, from a supply to a receiver. The transfer is carried out by means of at least one suction pump located in the receiver. The outlet of the pump is covered by the liquid being pumped. A buffer zone in shape of a two phase liquid/gas zone is established and maintained between the pump and the supply and liquid from the supply is supplied to the gas phase portion of the buffer zone by discharging the liquid from liquid phase portion of the buffer zone by means of said pump. Precaution is taken that the pump outlet is covered by liquid at all times.

Abstract: An apparatus for direct blood transfusion which comprises two needles with tubes connected thereto. One needle is introduced into the donor's blood system, while the other into the recipient's blood system. In order to provide for the delivery of blood from the donor to the recipient via said tubes, the apparatus is equipped with a vessel containing a medicamental liquid compatible with blood and mounted at a height sufficient for creating a hydrostatic head of the medicamental liquid exceeding the blood pressure in the recipient's vasculature. The apparatus also comprises a distributing means built around at least four proportioning vessels vertically mounted in a housing and rigidly coupled therewith. The housing is disposed between the upper and lower disks of a stator in coaxial relationship therewith. The housing is made rotatable in one direction with respect to the stator. The upper disk and the lower disk of the stator each have at least four holes formed therein.