Abstract: An apparatus for generating a stream in a body of water has at least one cylinder installed under water, and a water-jet pump housed in the cylinder. The pump draws water in through one end of the cylinder and produces a stream of water accelerated by a driving fluid supplied from an external source. The stream is discharged through another end of the cylinder to promote a flow in the body of water.

Abstract: A hand-held vacuum pump with an attached vacuum limiter valve is disclosed. The pump includes a cylinder coupled with a handle, a piston in the cylinder coupled with another handle, along with a suitable valving assembly for allowing a vacuum to be drawn at an inlet of the pump. More particularly, there is also disclosed a vacuum limiter which can be attached to or form an integral part of the pump. The vacuum limiter includes a valve which is attached to the cylinder outlet port and which is adjustable for allowing the limit vacuum to be set.

Abstract: A rotary gas compressor and vacuum pump apparatus which utilizes a central rotor with a slot formed therein to slidably receive a piston eccentrically connected onto a disk which covers the slot to form a cylinder is disclosed. The distance between the rotor axis and disk axis is equal to the distance between the disk axis and the off-center shaft axis, with all axes being parallel. Upon rotation of the disk, the rotor rotates at one-half the rotational velocity of the disk causing the piston to reciprocate in the cylinder, with gas flowing into the increasing cylinder volume and being compressed and discharged in the decreasing cylinder volume. This cyclic process continues with continued rotation of the central rotor.

Abstract: A fuel injection pumping apparatus has a cam (9) actuated reciprocable plunger (13) housed in a bore (11) into which fuel flows from a fuel supply (7,14). An outlet (12) extends from a pumping chamber (13A) defined by the plunger and bore. A spill passage (19) communicates the pumping chamber with a spill valve (16) so that fuel from the pumping chamber which flows through the passage and spill valve (20) flows into a cylinder (21) containing a resiliently biased piston (17). The fuel which flows into the cylinder is returned to the pumping chamber during outward movement of the plunger and the fuel supply (14,7) ensures that the pumping chamber is completely filled with fuel. A safety valve (30,31) allows fuel to escape from the cylinder (21) in the event that the piston (17) sticks in the cylinder.

Abstract: A pump comprising a housing including first and second housing sections and a gasket between the first and second housing sections. The housing has a first pumping chamber, an inlet, an inlet passage in the housing leading from the inlet to the pumping chamber, an outlet and an outlet passage in the housing leading from the pumping chamber to the outlet. A pumping member is movable in the pumping chamber to pump fluid through the pump. Inlet and outlet check valves are provided in the inlet and outlet passages, respectively with each of the check valves including a movable valve element. The gasket forms a seal between the first and second housing sections and includes at least one of the valve elements for the check valves.

Abstract: A compressor assembly is disclosed including a compressor mechanism mounted within a hermetically sealed housing. A cylinder block contains a reciprocating piston having a suction valve assembly. The piston includes a head with a deep semitorus shaped annular groove with a similarly shaped solid suction valve that seats thereto. A retaining mechanism including a clamping bolt with a plurality of radially extending fingers is used to reduce valve inertia and impact forces. The fingers behave as cantilevered beam springs.

Abstract: A fluid pumping assembly for particular use in delivery of sterile fluid used in surgical procedures, includes a pump control structure to which a replaceable fluid pumping cartridge is connected and disconnected to provide convenient replacement and disposability of the cartridge. The pump cartridge is self-contained in that it includes a fluid pump which is adapted for automatic connection to a pump drive structure when the cartridge is inserted into the assembly, so that the sterile fluid is pumped only through the pumping cartridge and fluid flow is entirely isolated from the pump control structure to ensure that the fluid is maintained sterile during pumping. The cartridge can include a selectively activated pulsation control to enable discharging the fluid from the cartridge in either a continuous flow or pulsating flow of the fluid. The cartridge can also include fluid flow dampening and safety vent features.

Abstract: A lighting fixture for use in hazardous locations and adverse environments, includes a mounting plate and a first ballast housing. A second non-interchangeable ballast housing may be alternately employed by use of an adapter ring removably securable intermediate the mounting plate and the second ballast housing. The adapter ring comprises a top portion specially adapted to engage the mounting plate, with first fastening means associated therewith, and a bottom portion specially adapted to engage the second ballast housing, with second fastening means being associated therewith. The adapter ring allows the replacement of the first ballast housing with the second, wherein the first and second ballast housings are not identical and are produced by different manufacturers. The adaptor ring effectively seals the interfaces with the mounting plate and second ballast housing, thereby maintaining the integrity of the lighting fixture for its intended purpose.

Abstract: A fixed geometry combustor for a gas turbine comprising at least one combustion chamber, a dilution chamber disposed downstream of said combustion chamber and in communication with said combustion chamber, at least one primary inspirator for introducing a fuel/air mixture into said combustion chamber in communication with said combustion chamber, and means for introducing dilution air into the dilution chamber.

Abstract: A fluid-displacement apparatus, especially a blower, has a stator of an electric motor directly driving the impeller integrated in the flow passage housing while the rotor of the electric motor is surrounded by the stator and is mounted on the ends of the blades of the impeller or propeller.

Abstract: Turbojet engine compressor . . . Its rotor (43) includes a movable end portion (45), such as a monoblock vaned disk able to be removed and replaced by a block. High and low pressure shaft lines (54) are formed into several portions to enable these operations to take place without having to dismantle the entire engine.

Abstract: Heat insulation is provided for a refrigerator or freezer. The insulation includes a closed cell material, which is placed in a hermetically closed space (13) surrounded by a diffusion-tight shell. The space communicates with a vacuum source, and a gas diffuses through the cells five times faster than air gasses. The material does not achieve its full insulating properties until the refrigerator has been used.

Abstract: An oil pump driving device drives an oil pump combined with a transmission coupled to an engine for supplying working oil to lubricate the transmission and enable the transmission to make gear shifts. The transmission includes a first power transmitting mechanism for connecting the output shaft of an electric motor to the drive shaft of the oil pump, and a second power transmitting path for connecting the output shaft of the engine to the drive shaft of the oil pump. A controller for selecting one of the first and second power transmitting mechanisms at a time selects the first power transmitting mechanism to drive the oil pump with the electric motor when the rotational speed of the output shaft of the engine is lower than a predetermined speed, and selects the second power transmitting mechanism to drive the oil pump with the engine when the rotational speed of the output shaft of the engine exceeds the predetermined speed.

Abstract: A movable magnet type pump, wherein a magnet moving body having at least one axially magnetized permanent magnet and an axially extending through liquid passage is arranged so as to be slidable inside a liquid introducing chamber; a plurality of coils are fixed so as to enclose the liquid introducing chamber; a first check valve is arranged on a liquid introducing side of the liquid introducing chamber; a second check valve is arranged on a liquid discharge side of the through liquid passage; and the magnet moving body is caused to reciprocate by interaction between current applied to the respective coils and magnetic flux from the magnet moving body cutting across the respective coils.

Abstract: An eccentric screw pump with a pump casing (1) having an intake stub (6) and a delivery stub (7) and enclosing a suction chamber (8) and a delivery chamber (9). A stator (2) arranged in the said casing surrounds a rotor (3) that can be driven by a motor. In order to permit multi-phase delivery, a lower portion (9a) of the delivery chamber (9) is connected to the suction chamber (8) via a liquid bypass line having a valve opening (13) that can be actuated by a control element on the basis of the differential pressure between the delivery and the suction chambers (9, 8) in such a way that the valve (13, 14) is open in the case of the differential pressure which arises in the delivery of dry-running gas but is closed in the case of the differential pressure which arises during the delivery of liquid.

Abstract: A suction pump is used for draining body fluids from body cavities and has a bottom portion (1) and a resilient pump body (2) with a domed shape. The pump also has an inlet valve (27) and an outlet valve (17). The pump stroke is provided by the elastic deformation of the pump body (2) towards the bottom (1) and the suction stroke is provided due to the elasticity of the pump body (2). In order to achieve only a small pump clearance volume the pump body (2) has a smooth inner surface and the bottom has a concave inner side (8) corresponding to the inner configuration of the pump body (2) when it has been deformed for starting the suction stroke of the pump.

Abstract: A joint with tapered edges allows, by means of the taper, a gradual transmission of the loads from panel to joint to adjacent panel such that the panels contribute not only as a shear web between the tensile and compressive members but also contributes to the compressive, tensile and bending loads of the corner structure and such that the combined structure of joint and panels behave as a monocoque structure. This joint allows for a lighter weight preformed panel to be used.

Abstract: A displacement piston pump has a drive shaft that is driven by a rotating motor. The pump includes a piston which is axially movable within a cylinder and is connected to a piston guide shaft. The drive shaft and the piston guide shaft are rotatably coupled to each other, but some axial movement is permitted between these two members. The drive shaft and the piston guide shaft are coaxially aligned with respect to each other. The piston guide shaft has a guide element connected thereto. The guide element is guided in a guide way. The piston stroke can be maintained with high precision. The piston guide shaft is rotatably and axially supported in a support housing. The support housing contains the guide way therein and a guide element is rigidly connected to the piston guide shaft.

Abstract: This invention relates to an improvement in valve assemblies for reciprocating sucker rod operated subsurface pumps and specifically as to the traveling valves and standing valves. The traveling valve includes a valve body having an inwardly-directed lip at the bottom with the valve seat, ball and cage inserted from the top of the valve body. Further the standing valve is positioned in the upper portion of a bushing threaded into the bottom of the pump barrel, thus placing the standing valve and the traveling valve in closer proximity at the bottom of the downstroke than prior such pumps.

Abstract: An engine driven propulsion fan. The preferred use of this fan is to power aircraft. Two turbochargers are provided both driven in series by exhaust gasses from a rotary engine. A portion of the compressed air produced by the second turbocharger provides thrust for the engine and a portion is used for engine air, further compressed by the first turbocharger.