Abstract: The present invention is for the efficient transfer of mechanical power through a fluid medium. The various embodiments of the present invention exploit the natural physical properties of fluids to create a more efficient means of driving fluids as well as transferring power from propelled fluids. The present invention employs an impeller assembly in a variety of applications including hydroelectric turbines, fluid turbines, turbine transmissions and pumps of various types. The multi-disk impeller assembly having a central cavity, a specialized central hub design and reinforcing backing plates contribute to greater efficiency and less turbulence, friction and noise.

Abstract: A ceiling fan having a down rod assembly, a motor, fan blades, an upper body, a hub assembly, and a cage. The cage provides an open enclosure for protecting the motor. The hub includes a hub canister and a hub cover. A lighting kit includes a lighting fixture within the hub canister and a lighting cover that is interchangeable with the hub cover.

Abstract: Apparatus for moving a stream of molten metal in a bath of molten metal, includes a pump disposed in the met. The pump has a lower inlet opening with a strainer and a slinger rib to prevent the entry of debris that exceeds a predetermined diameter from passing through the pump.

Abstract: A portable cooling fan. The fan includes a fixed rack arranged under a frame body, a wheel set disposed laterally on the fixed rack, a support rod located at a position opposite against the wheel set for stabilization, and a handgrip arranged on an upper position of the fan body for carrying the cooling fan easily. In addition, an indented costa is formed on each of the leaf blades by pressing, to enhance intensity of the leaf blades and create turbulence to enlarge the blowing area. The frame body includes a protective mantle, which is supported with a plurality of reinforcement ribs.

Abstract: A compound vacuum pump includes a regenerative section and a Holweck section. An annular abutment is formed on the radially innermost rotating cylinder of the Holweck section. The abutment acts to cause dust and foreign particles entering an inlet of the pump to be trapped before entering an inlet of the regenerative section. A circular barrier may be used with the abutment to assist with trapping the dust and foreign particles.

Abstract: A pair of high speed blowers are pivotally mounted in a vertical plane on a movable frame structure. Each blower has blades turning in an opposite direction from the other blower. The blowers are locked in place at an angle of 10 to 60 degrees with respect to each other so that air emanating from the blowers impinge on each other downstream from the blowers. The air impingement creates a triangular type expanding air stream pattern downstream from the impingement area.

Abstract: Disclosed is a fan guide including a rectangular guide body located at a suction part of a fan, a central frame positioned at a central portion of the guide body, motor fixtures provided at an outer circumferential surface of the central frame, and frames for connecting the guide body and the central frame to each other while supporting the fan and a driving motor adapted to drive the fan. The frames are arranged around the central frame while being circumferentially spaced apart from one another by different angles, respectively. The arrangement of the frames is set so that intersections among lines extending inwardly along the frames beyond the central frame, respectively, discord from one another. By this arrangement, it is possible to decrease the degree of noise resulting from a blade passing frequency while destroying the regularity of a vortex shedding formed at each frame to reduce the interaction between a vortex flow and fan blades, thereby achieving a reduction in noise and flow loss.

Abstract: A multi-use clean air fan and fan motor mount assembly comprising a bifurcated conical air inlet and blown air deflector, a fan motor mount, motor mount supports, a fan motor and a fan, the bifurcated conical air inlet and blown air deflector having a long outer wall, and a short inner wall, the fan motor mount suspended within the bifurcated conical air inlet and blown air deflector by motor mount supports fastened between the outer wall of the bifurcated conical air inlet and blown air deflector and the fan motor mount, an aperture defining a central opening in the top of the bifurcated conical air inlet and blown air deflector, the fan and fan motor having a common longitudinal axis with the longitudinal axis of the bifurcated conical air inlet and blown air deflector, the fan having a series of vanes extending outwardly from the central longitudinal axis of the fan, the inside of the long outer wall of the bifurcated conical inlet and blown air deflector surrounding more than half of the longitudinal heig

Abstract: In a fluid machine such as multistage centrifugal compressor, the pressure of a working fluid is raised with the rotation of a impeller. A shaft sealing device is mounted at the end of the rotary shaft in order to prevent the working gas of the raised pressure from leaking out of the fluid machine and then polluting the surroundings. In a case where the fluid machine operates to rotate at high speed, a labyrinth sealing device is employed for the purpose of reducing a frictional loss in the shaft sealing device. The labyrinth sealing device includes a plurality of stages of labyrinth fins which are formed on a casing or the rotary shaft, and a layer of abradable coating to-be-bitten which is formed in the surface part of the rotary shaft or the casing opposing to the labyrinth fins. The clearances between the labyrinth fins and the rotary shaft or the casing are made narrower on the low-pressure side of the labyrinth sealing device than on the high-pressure side thereof.

Abstract: The present invention discloses a cooling system for temperature control, e.g., removing heat from electronic circuits. The cooling system includes a fan and an airflow guiding system where the guiding system includes an inlet air duct for guiding the airflow to the fan. The inlet air duct includes turbulence reduction grid for separating the air duct into a plurality of isolated flow path whereby the air turbulence is reduced. In a preferred embodiment, the airflow guiding system further includes an outlet duct for incorporating the fan therein wherein the outlet portion and the fan are directed to a direction different from the inlet air duct for guiding the airflow to the fan. In another preferred embodiment, the outlet duct and the fan are directed to a direction perpendicular to the inlet air duct for guiding the airflow to the fan.

Abstract: A rotodynamic pump comprises a centrifugal impeller (11) provided within a volute body (7) and an emulsifier (17) provided in the region of an inlet of the volute body and rotatable with the centrifugal impeller for emulsifying material to be pumped.

Abstract: An air circulator fan has front and rear fan guard members, each of which have a grille forming a concave dish. A propeller is positioned between the fan guard members, and is attached to the rotary output of a motor. The motor is positioned centrally on the front fan guard member, in a location downstream from the propeller. When the propeller rotates during operation of the fan, air is drawn through the rear fan guard member and out the front fan guard member. Each grille has a first spacing at a major face portion thereof, and a second, lessor spacing proximate a periphery thereof. This arrangement allows debris (such as feathers in a poultry barn) to pass through the major face portion of each grille, but provides a safety feature near the periphery of the guard members. A three-point mount is provided for suspending the fan, with chains or cables, from an overhead surface.

Abstract: A fan device comprises a front fan cover, a blade device, a rear fan cover and a rotary front net. The front fan cover is installed with a first motor and a second motor therewithin. The blade means is installed behind the front fan cover and secured to the center of the shaft of the first motor for being driven to rotate by the first motor. The rear fan cover is installed behind the front fan cover and the blade device. The rear fan cover is combined with the front fan cover. The rotary front net has many lattices. The rotary front net is properly connected to the shaft center of the second motor and is driven to rotate by the second motor. The front fan cover is installed with a fragrant piece groove, a mosquito-repellent incense piece groove and an electric heat piece, and a fan leg frame is pivotally mounted to the rear fan cover. Thereby, the output wind can be diffuse uniformly and smoothly.

Abstract: A filtering pump assembly for pumping and filtering a fluid includes a pump subassembly and a filter subassembly. The pump subassembly has an inlet portion with a first cross-sectional shape. The preferred cross-sectional shape of the inlet portion is circular. The filter subassembly includes a foraminous cage member, having an opening formed therein of a shape corresponding to the first cross-sectional shape of the inlet portion and being configured to fit engagably thereon. The filter subassembly also includes a filter element formed of a porous material for placement in covering relation to the cage member. The preferred filter element is either bag-shaped or formed as a cylindrical sleeve. Preferably, the filter assembly includes a retainer for retaining the filter element in covering relation to the cage member. The retainer may be an annular spring clip having two ends which overlap one another, and having a finger grip formed at each end thereof.

Abstract: An inertial filter includes a pitot or probe extending into the main stream of a turbomachinery scroll, an open end portion of the probe being directed downstream. The probe also includes a cowling to orient or inertially swirl the airflow about the probe.