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

Abstract: An improved double acting piston pump of the type having a shaft connected to the piston for reciprocating the piston wherein the shaft extends from the pump body. The improvement of the present invention is to reciprocate the shaft with an asymmetrical uniform motion rotary cam so that the pump delivers the same constant flow rate of a liquid being pumped during both the forward and the backward movements of the pump's piston.

Abstract: A system for metering the volume of a liquid, e.g. ink, supplied by a positive displacement pump to an installation, such as a printing press, employs a device for generating a first series of signals each indicative of completion of a pumping stroke. The speed of the pump is also sensed to generate a second series of signals each indicative of the positive supply of liquid by the pump. The signals of the first series are counted only in the presence of a corresponding signal of the second series. The result is an accurate numerical indication of the total volume of liquid pumped.

Abstract: A rotary piston compressor with parallel internal axes has a driven external rotor (12) with a compression chamber (17) in which an internal rotor (20) is rotatably mounted. The internal rotor (20) is hollow, made of light metal, and mounted on a shaft (21). Perfect balancing of the masses of the internal rotor (20) is achieved by having metal pins (42,43) which extend the full length of the internal rotor (20). The heavy metal pin (43) also prevents rotation of the internal rotor (20) about the shaft (21) when these parts are not monolithic.

Abstract: An energy recovery system for a motor vehicle having a gasoline engine and an exhaust energy recovery device disposed in an exhaust system of the engine. When the amount of depression of an accelerator pedal is zero and the speed of travel of the motor vehicle and/or the rotational speed of the engine is higher than a predetermined value, it is decided that an engine brake is applied to the motor vehicle at the time the motor vehicle is decelerated or runs down a slope. Then, fuel to be supplied to the engine is cut off, and the throttle valve is fully opened. As a result, the engine functions as a compressor, and air compressed by the engine operates the exhaust energy recovery device. The braking energy produced by the engine brake is now effectively converted into and recovered as electric energy.

Abstract: This invention relates generally to pumps, and more particularly, to a new concept in pumps where the principle of operation is based on the change in momentum of a curved, fluid jet curtain, with the pump itself containing no moving parts.

Abstract: A pump for liquid or slurry is valve controlled to fill a pumping chamber to an upper predetermined level; valve controlled to supply gas under pressure to the top of the liquid to force it out a lower outlet port down to a lower predetermined level and to alternate such cycles with all valves being located outside the chamber.

Abstract: A refrigeration compressor is disclosed which incorporates an improved valve plate assembly having selected portions thereof bowed outwardly to form discrete raised surface portions thereon. These raised surface portions serve to initially increase the clamping force on the gasket means disposed between the valve plate and head or compressor housing to thereby insure a fluid tight seal is maintained during operation of the compressor. Further the valve plate assembly incorporates dual suction valves oriented in side by side relationship and secured to the valve plate at opposite ends. This arrangement offers improved gas flow to the compression chamber by substantially reducing competition between adjacent valves.

Abstract: In a liquid-ring rotary compressor having a control element with a suction port, a pressure orifice, and a plurality of supplementary ports in front of the pressure orifice with respect to the direction of rotation of the compressor impeller, each supplementary port having a back-pressure valve, pressure losses are reduced by decreasing the flow area of the supplementary ports toward the pressure orifice so that the total flow area for the supplementary ports that are exposed by the back-pressure valves during the compression operation is roughly proportional, with respect to the prevailing nominal pressure condition of the compressor, to the gas mass existing in the vane chambers. Embodiments for flat and conical control elements is disclosed.

Abstract: A compressor utilizes a fluid piston to achieve high volumetric efficiency and produce moisture-free, clean, compressed fluid. The compressor has two hollow chambers which are interconnected by a conduit system having a pump located in it. The compressor contains a sufficient volume of noncompressible transfer fluid to completely fill one of the cylinders and the conduit system. A switching system causes the pump to pump the transfer fluid into a first chamber until that chamber is completely filled and then pump the transfer fluid out of the first chamber and into the second chamber. When the second chamber is completely filled the switching system again causes the direction the transfer fluid is being pumped to reverse and the cycle is repeated.

Abstract: A fuel injection pump includes a barrel mounted in a barrel mounting hole in a pump body. The barrel has a cylinder hole and a valve mounting hole which are coaxial with the barrel. The inner peripheral surface of the cylinder hole and the inner peripheral surface of said valve mounting hole are interconnected by an annular shoulder surface. A plunger is slidably received in the cylinder hole, and a delivery valve is mounted in the valve mounting hole. The delivery valve includes a valve seat, and a valve holder which is tightly threaded into the valve mounting hole, so that the valve seat is firmly held between the valve holder and the shoulder surface of the barrel. One end face of said valve seat is held in direct contact with the barrel shoulder surface under a high pressure.

Abstract: An internal combustion engine (20) has a plurality of pistons (106) reciprocating within cylinders (34) and means to translate the reciprocating motion of said pistons into rotary motion. As the cylinders (34) rotate in an engine cavity (49) about a drive shaft (24), head ends (104) of the cylinders (34) cyclically pass stationary fuel injection means (28) and a stationary exhaust aperture (30) located rotationally downstream from the fuel injection means (28). Each cylinder (34) includes a cylinder wall having an air intake port (130) provided therein. The air intake port (130) is provided at a location at which rotation of the cylinder (34) in the cavity (49) tends to force or scoop air into the cylinder (34). In particular, the air intake port (130) is provided on a rotationally leading portion of a peripheral portion of the cylinder wall.

Abstract: One of the exhaust gas turbochargers of a plurality of parallel turbochargers is constructed to be disconnectable and connectable by the arrangement of one controllable exhaust gas blocking device in the exhaust gas pipe in front of the exhaust gas turbine and one automatically operating charge air blocking device in the suction pipe of the charge air compressor. A fast power increase to the nominal power of the internal-combustion engine is achieved, if a bypass pipe with a controllable bypass blocking device is arranged at the switchable exhaust gas turbocharger, this bypass blocking device being constructed as a transverse connection between the suction pipe of the charge air compressor of the exhaust gas turbocharger, which cannot be disconnected, and the suction pipe of the charge air compressor downstream of the charge air blocking device of the disconnectable and connectable exhaust gas turbocharger. The thermal and mechanical overloading of the connected exhaust gas turbocharger is therefore avoided.

Abstract: A fuel injector for diesel engines, having at least one pump plunger (1), which is sealingly guided in a plunger bushing (2) and, together with said bushing, defines a high-pressure space (5). The pump plunger (1) has an internal suction valve (6) which creates a fuel injection pump having a small dead volume in the high-pressure region and low construction cost. The suction valve (6) may be provided with a cone-shaped compression spring (7) disposed in the high-pressure region (5) or with a stroke limiting stop (28, 28a).

Abstract: A dual-acting, reciprocating piston pump is provided which comprises a pump body formed with a passageway having an inlet and a discharge outlet which receives a piston assembly including a plunger rod carrying a valve plate or spider, a shovel rod carrying a shovel disc and a rod connector formed with a valve seat which interconnects the plunger rod and shovel rod. A tubular check valve is carried on the rod connector between the valve seat and the valve plate in sliding contact with the internal wall in the pump body formed by the passageway, which divides the passageway into an upper pumping chamber communicating with the discharge outlet and a lower pumping chamber communicating with the inlet. A second check valve is located at the inlet to the passageway in the pump body and is movable between an open and closed position relative thereto.

Abstract: An improved high pressure, piston pump has at least one two-piece telescoping cylinder having an end flange at one end and a housing containing piston drive means at the other end which are held together by tie rods passing through spacer tubes. The cylinder can be opened without loosening the tie rods to expose the piston and replace the piston seal.

Abstract: Improved apparatus (10) for pumping of a viscous, flowable material which minimizes the problem of large pressure fluctuations in downstream conduits (16). The apparatus (10) preferably includes a twin piston cement pump (12) and a flexible material delivery conduit (16). A surge control apparatus (14) operatively couples the pump (12) and the conduit (16). The surge control apparatus (14) includes a primary material-conveying body (40) with an elongated surge chamber (46) extending outward from the primary body (40). The surge chamber (46) includes a slidable piston (48) and means for filling a portion of the chamber with a pressurized fluid (62).

Abstract: A deep well pump for positioning in a bottom hole assembly and having at least one fluid pump and at least two fluid powered motors with the pump and motor pistons carried in alignment on the piston rod. The pump includes passages for delivering a power fluid to one end of each of the motor cylinders and for receiving exhaust fluid from the other end of the motor cylinders, and a valve for reversing this operation. A first sleeve is positioned around the first motor cylinder defining a power fluid path from one end of the first cylinder to one end of the second cylinder, a second sleeve is positioned around the first sleeve defining an exhaust fluid path from the other end of the first motor cylinder, and a third sleeve is positioned around the second motor cylinder defining an exhaust fluid path from the other end of the second motor cylinder, with the first and second exhaust fluid paths interconnected.

Abstract: A peristaltic pump is described for operating simultaneously on two fluid lines having different wall thicknesses comprising a rotatable head having rollers and enclosed within a hollow body. The hollow body has a central axis with an internal first cylindrical surface portion at a first radius R from the axis, and a second cylindrical surface portion at a second radius r from the axis. The interspace between the periphery of the respective roller and the respective cylindrical surface portion is arranged to perfectly occlude the respective different sized fluid line.

Abstract: An apparatus includes a tilt piston having a piston head. The piston head is reciprocally disposed within a cylindrical bore formed in a housing, the bore being oriented along an axis. A seal is mounted circumferentially about the piston head. The seal has an outer diameter that exceeds an inner diameter of the cylindrical bore. The seal extends radially in a first direction having an axial component. A support is mounted circumferentially of the piston head adjacent the seal. The support has an outer diameter less than the outer diameter of the seal. The seal is a continuous annular ring which may be of a circular or rectangular cross section. The seal and the support may be formed as a unitary member or may be two distinct elements. The support contacts the bore during a portion of travel of the piston within the bore.