Abstract: A turbine 400 has a central duct 410 which accelerates fluid passing through it and a blade configuration which retards the flow of fluid near the tips of the turbine. This structure results in a vortex having a higher fluid pressure behind the tips of the turbine blades 408 and a lower fluid pressure behind the duct. In the present invention, this vortex is enhanced by (1) an increased acceleration of the fluid passing through the duct 410 and a deceleration of the fluid passing through the blades 408; and/or (2) by a fluid redirection device 850 for directing the fluid passing through the duct towards the outer diameter of the turbine.

Abstract: An apparatus for tensioning a subsurface float line and the like during doyment of the line and thereafter includes a capstan rotatably mounted and located in a liquid medium, the capstan having a bore extending from one end of the capstan to the other end, the bore including a plurality of pump blades for moving the liquid through the bore when the capstan is rotated, the capstan also including turbine blades located around the circumference of the capstan and adjacent both ends of the capstan, the capstan also including a circular surface interposed between the turbine blades for communicating with the line to be tensioned. The pump and turbine blades do work when the capstan is rotated thereby creating a counter rotational (drag) force that tensions the line during and after deployment.

Abstract: A transverse fan in which a plurality of blades are disposed between disk- or ring-shaped end plates in a circumferential arrangement at fixed mounting pitches in a ring-shaped configuration. Partitions plates are disposed at intermediate portions in the longitudinal direction of the blades such that each of the blades is inclined at fixed angles with respect to a fan axis and mounted at unequal pitches. The transverse fan includes a plurality of multi-bladed impeller units disposed between the disk-shaped end plates. Each of the multi-bladed impeller units has one disk-shaped partition plate having one surface on which a plurality of blades are integrally disposed along a circumferential direction thereof at unequal pitches and inclined at predetermined angles so as to extend along the axial direction of the transverse fan. A plurality of the multi-bladed impeller units are integrally stacked coaxially with each other to form the transverse-fan.

Abstract: An improved aquarium pump for use with an aquarium filter which includes a filter box, a rotating biological filter element and a spray bar, the pump supplying water to the rotating biological filter element and the spray bar. The pump may include a pair of impellers for supplying water to the filter box and the spray bar, respectively.

Abstract: A method for producing a rotor of a turbine, particularly a steam turbine, from individual rotor parts being welded together to make a unit, includes assembling parts of a rotor required for a given turbine in a modular system having supply steam shaft ends, single rotor disks, double rotor disks, exhaust steam shaft ends and optionally condensation-end-stage drums, for producing various rotor variants. The parts of the rotor are produced at parallel times according to orders and/or taken from stock. Still required remachining of the assembled rotor during production of the parts, especially machining grooves in final form for receiving rotor blade roots in the remachining step, is minimized. The parts are joined together with low warping with a beam of high power density, preferably an electron beam. Required rotor blades are selected and the rotor disks are equipped with the blades before or after the parts are joined together. The rotor put together from the individual parts is machined in final form.

Abstract: An auger-tube pump mixing device for mixing materials with large density differences while maintaining low stirring RPM and low power consumption. The mixing device minimizes the formation of vortexes and minimizes the incorporation of small bubbles in the liquid during mixing. By avoiding the creation of a vortex the device provides efficient stirring of full containers without spillage over the edge. Also, the device solves the problem of effective mixing in vessels where the liquid height is large compared to the diameter. Because of the gentle stirring or mixing by the device, it has application for biomedical uses where cell damage is to be avoided.

Abstract: A plurality of flat plates are laterally disposed at an outer circumference of a hub and auxiliary vanes are disposed in parallel to at least side edges of each of said flat plates while being spaced apart from the side edges. Accordingly, an occurrence of eddy flows can be restricted, a peeling-off eddy flow can be reduced, agitating and mixing of gas-liquid can be made efficient without producing any damage to microorganisms or the lie and an agitating efficiency can be improved with a simple structure.

Abstract: Movement of a fluid such as air is produced by rotating about a rotational axis a plurality of flow generating plates arranged in parallel with clearances therebetween. The clearances between adjacent flow generating plates for producing the movement of the fluid most effectively only by an adhesion of the fluid to the flow generating plates are set to be twice a value of a distance of an intermediate portion between the surface of the flow generating plate contacting a portion of the fluid in a close boundary layer which is rotated and moved substantially together with the flow generating plate and a remote fluid boundary layer which is substantially not influenced by centrifugal force due to the rotation of the flow generating plate. In the case of air, the clearances are about 0.5 mm. It is preferred to form the flow generating plate so as to have a waved surface for improving the flow generating efficiency.

Abstract: A laminar flow fan is described comprising a number of fan elements, such as disks, carried on support posts. In a preferred embodiment, each element has a non-circular central aperture. The shape of the aperture provides sufficient clearance for the elements to be placed over the support posts in a first position. Rotation of the elements into a second position with respect to the support posts latches the elements into engagement with the posts, thereby maintaining the elements in this second position.

Abstract: A rotary pulp screening device of the vertical type is disclosed having a high screening efficiency and high capacity. The screen provides a streamline flow of pulpstock, and aims to supply a fairly constant flow of pulp through the screen from top to bottom, thus utilizing the full height of the screen. The screening device includes a cylindrical housing with a vertical cylindrical screen therein, a rotary impeller mounted for rotation within the screen, the impeller having a body whose top is substantially level with the disc ring and bottom is adjacent the lower end of the cylindrical screen, the body having a shape with circular axial cross section from the top to the bottom, whose diameter increases from the top to the bottom thus leaving a larger annular space at the top, and impeller blades radiating from at least a portion of the body of the impeller and extending to within a short distance from the screen for the height of the screen.

Abstract: An impeller and apparatus for use therewith are described, the impellers having collapsible cups presenting variable entrance areas with respect to the fluid, the areas being determined by the velocity of rotation around a shaft on which the cups are carried. The apparatus for utilization of the impellers comprises a wind driven machine for power output, a wind driven machine having a plurality of levels of impellers, a wind driven machine for starting another wind driven machine which is difficult to start on its own, and a wind driven machine utilizing the impellers for providing turbulence in a liquid.

Abstract: Whole grain kernels are admitted through an inlet at one end of a closed tubular vessel, and are entrained by a blade-type rotor in the presence of metered quantities of liquid, being accelerated so that they form in the vessel a whirling tubular veil which continuously travels lengthwise of the vessel towards an outlet thereof and wherein each kernel becomes uniformly wetted over its entire surface and moistened to a predetermined value.

Abstract: An apparatus for generating electricity and power from the natural movement of a body of water including wave action, tide and current having a plurality of floating barges having paddle means driven by the wave, current or tide action and mounted for free rotation about a fixed pivot means in response to changes in the tide or current flow and mounted for up and down movement corresponding to the water level.

Abstract: A compressor construction is shown, in combination with a jet engine, having a drum rotor with axially broached attachment slots therein. Blade sticks, each having an axial root shaped to fit the attachment slots and a platform which extends the length of the drum are positioned on said drum. Each blade stick has a plurality of blades located thereon, one for each stage of the compressor. A one-piece stator case with fixed cantilevered vanes is positioned over said drum rotor and blade sticks to form the completed compressor. A drum rotor has an integral shaft which is connected to a turbine. A method of assembling the compressor includes an assembly fixture on which the drum rotor can be positioned with the stator case and blade sticks being aligned so that they can be slid into place on the drum rotor.

Abstract: A wind driven turbine having a plurality of wind wheels mounted on a single drive shaft supported rotatably on a turntable at the upper end of a supporting framework with a plurality of wind wheels being mounted on opposite ends of the single horizontal shaft. The horizontal shaft is drivingly connected to a vertical shaft which drives a generator assembly at the lower end of the supporting framework. A wind vane assembly is connected to the turntable and a governor assembly is drivingly connected to the horizontal shaft for controlling the rotational speed of the wind wheels and horizontal shaft.