Abstract: Disclosed is a bearing unit which can be used in a drainage pump operated without supply of clean water or a hydraulic pump, which exhibits excellent wear resistance against water containing earth and sand and satisfactory assembling facility, and a method of manufacturing the bearing unit.The contact surface of a bearing made of stainless steel and/or that of a sleeve is applied with a sprayed coating, the main component of which is WC, and which contains one or more elements selected from a group consisting of nickel, chromium and cobalt as a binder material thereof, or a sprayed coating, the main component of which is Cr.sub.3 C.sub.2, and which contains NiCr as a binder material, after the sprayed coating has been formed, heating at from 300.degree. C. to 550.degree. C. is performed for one hour or longer so that hardness and wear resistance equivalent to those of a WC-12% sintered article is attained.

Abstract: A transverse fan includes a pair of end plates each having an annular shape, a plurality of blades annularly disposed between the end plates and a plurality of partition plates each having an annular shape and disposed at intermediate portions of the blades. Each of the partition plates has one side surface to which base ends of the blades are integrally secured to extend forward with a predetermined inclination and form a multi-blade impeller. A plurality of the multi-blade impeller are stacked axially so that each of the partition plates has another one side surface to which leading ends of the blades of adjacent multi-blade impeller are connected, and one of the end plate has one surface to which the leading ends of the blades of a leading end side one of the stacked multi-blade impellers are connected and another one of the end plates has one surface to which the base ends of the blades of a base end side one of the stacked multi-blade impellers is secured.

Abstract: An adjustable stator vane assembly disposed in a fluid conduit of a turbomachine includes an annular outer shroud and an annular inner shroud positioned within and concentric to the outer shroud to form an annular fluid flow path. A plurality of rotatable stator vanes are positioned between the outer shroud and the inner shroud and spaced apart about the circumference of the inner shroud. Each rotatable stator vane has a vane shaft attached to one end thereof and a pivot pin supporting the other end thereof. A plurality of vane stem bushings are mounted in one of the inner shroud and the outer shroud, with each bushing receiving a respective vane shaft. The distal end of each vane shaft is connected through an individual linkage to a synchronizing ring. An actuator provide arcuate movement of the ring so as to simultaneously rotate each of the rotatable stator vanes.

Abstract: A fan mounting arrangement of the type comprising a blade assembly incorporated to a tubular central hub (1, 10) fitted into a shaft end (2, 20) of a motor (M), the central hub (10) having at least one engaging projection (11) fitted into a corresponding engaging recess (21) provided at an end portion of the shaft end (20), in order to mount the central hub (10) to said shaft end (20) restraining said parts from relative movements, the fitting being obtained by the elastic deformation of part of the lateral wall of said central hub (10).

Abstract: The invention relates to a friction vacuum pump (1) with a housing (2, 3), a rotor (8) and a rotor bearing (9) which is supported in the housing (2, 3) via a sleeve-like support (21). In order to obtain a precise support which nonetheless permits slight oscillations in the rotating system, it is proposed that the sleeve-like support (21) is in turn supported in the housing (2, 3) via several, preferably three, substantially axially extending rods (26).

Abstract: A structure and method for transferring load, particularly bending load, from a blade to a blade hub, such as for use in a wind turbine device, is provided. In one embodiment, the structure includes two or more spaced-apart annular rings, respectively contacting the inner surface of a blade root end, and the outer surface of a hub spindle, with a web extending therebetween.

Abstract: A novelty ceiling fan is provided having an electric fan motor with separate stationary members and rotating surfaces, and a plurality of radially extending blades being secured to the one of the rotating surfaces. The ceiling fan also includes a tubular downrod for pivotally suspending the ceiling fan from a ceiling, and at least one electrical switch for selectively controlling the operation of the fan motor. A U-shaped mounting bracket is provided, securable to one of the stationary members of the fan motor, for detachably connecting a decorative globe to the fan motor substantially enclosing at least the lower and side surfaces. The decorative globe has upper and lower portions with the upper portion being comprised of a generally cylindrical side wall which defines an upper opening. The lower portion is selectively configured to generally depict conventional features of a novelty or cartoon character such as a bear head, the conventional features including a head, eyes, ears, a nose, a mouth and cheeks.

Abstract: A side channel compressor with an impeller with delivery blades that has a seal to prevent leakage between the impeller and the impeller housing. A hub supporting the impeller connects it to a drive shaft. A housing surrounds the impeller, which rotates therein. A sealing device is provided between impeller and housing. The impeller is provided with a bearing ring that overhangs the hub. The overhanging portion of the bearing ring contacts a sealing ring held against a contact surface of the housing by a retaining ring. The retaining ring can be fastened to the housing by screws. The bearing ring can be provided with a corner recess to more securely engage the sealing ring.

Abstract: A mechanical face seal is provided that incorporates fluid passages through either or both of a first and a second element of the seal for directing a flow of cooling fluid to an exposed area of the second element which extends radially outward beyond the contact area of the seal. The fluid passages are configured and oriented to provide more cooling flow through each seal element and over the surfaces of each seal element then is achievable with prior cooling and lubrication approaches, to thereby enhance heat dissipation from the elements of the seal to such a degree that lubrication, seal life and performance of the seal are improved. In preferred embodiments of the invention, the seal elements are specially configured to create an annular gap between the elements for centrifugally pumping fluid away from a contact area of the seal.

Abstract: A rotor disposed in a fluid retarder which includes a annular shell having a semicircular cross section and a plurality of blades, each blade being composed of a semicircular blade body and a rib bent from an arcuate edge of the blade body and fixed to an inside of the shell. The annular shell and the blades are composed of sheet metal. The blades are arranged at regular intervals in the circumferential direction of the shell and are welded into place. Because the annular shell and the blades are composed of sheet metal and are brazed together, the cost of manufacturing the rotor can be reduced without reducing its performance.

Abstract: A mounting arrangement (100) for a Variable Diameter Rotor blade assembly (16) having an outer blade segment telescopically mounting to a torque tube member (24), and connecting means (70) for transferring centrifugal loads of the outer blade segment (22) to a rotor hub assembly (18). The outer blade segment (22) includes a spar member (30) having a longitudinal axis (26) and defining an internal channel (62) for accepting the torque tube member (24) and the connecting means (70). The mounting arrangement (100) couples the connecting means (70) to the spar member (30) and includes a restraint surface (86) formed within the spar member (30) and a restraint assembly (68) disposed in combination therewith. The restraint surface (86) is disposed inboard of the tip end (90) of the spar member (30) and in a plane oriented transversely of the longitudinal axis (26).

Abstract: A fan for a vacuum cleaner has a fan housing, motor and impeller. The fan housing has an inlet and outlet. The impeller has a overmolded hub and multiple flexible blades. This flexible blade fan provides better air performance, less noise, better durability, and easier impeller installation than conventional vacuum cleaner fans.

Abstract: Apparatus for drying and/or treating powdered, granular, or flaked material in combination with a containment room or glove box under controlled atmospheric conditions, which may have an oven in the room with a chamber with a vessel therein to carry material, the chamber having a door to seal it off and vacuum creation and gas supplying features directly therefor, the vessel which carries material for drying and/or treating is supported on a frame with provisions for rotation by motor equipment, with heater elements around the outside of the chamber to provide heat if required, and vanes inside the vessel to fluidize the material upon rotation and the application to the vessel of vacuum, heat, and/or gas for drying and/or treating the material as required.

Abstract: A lightweight, impact-resistant gas turbine blade, such as an aircraft engine fan blade, includes attached-together first-metal and second-composite segments together defining an airfoil portion. The first segment includes entirely the suction side, leading edge, and trailing edge from the blade root to the blade tip and further includes partially the pressure side near the leading and trailing edges from the blade root to the blade tip. The second segment includes partially the pressure side from near the leading edge to near the trailing edge from the blade root to near the blade tip.

Abstract: A turbine nozzle includes a circumferentially continuous annular outer band, and a plurality of circumferentially spaced apart vanes extending radially inwardly therefrom. A circumferentially segmented inner band is joined to the vanes and is disposed coaxially with the outer band. The inner band includes a plurality of circumferentially adjoining arcuate segments, adjacent ones of which have circumferentially facing end faces spaced apart to define a gap therebetween. In an exemplary embodiment, strip seals are inserted in corresponding slots formed in the end faces to seal leakage therebetween.

Abstract: The drying apparatus for crop materials particularly alfalfa includes a press with a main press roller and a plurality of subsidiary press rollers which is fed using an additional guide roller cooperating with the transportation belt and guide fingers in the main roller to direct the bulky crop into the nip between the rollers for extracting juice and providing a partially dried crop. The partially dried crop is supplied to a drying apparatus including a tumbling cylinder into which is injected heated air from a ceramic tube heat exchanger fed by a co-generation gas turbine. The gas turbine is used to generate electric power for motors in the apparatus and generates a flow of highly heated air which is passed over the ceramic tubes to heat air drawn into the tumbling cylinder for drying of the crop material.

Abstract: The attachment for securing the stator vanes to the outer compressor case includes hooks strategically located with one set in the center of a segment and one set each at either end of each segment. The segments are assembled end to end to form a ring of an array of rows of airfoils for directing air to the compressor blades of a gas turbine engine. Each assembled segment may include three rows of vanes. The axial gap between the structure of the upstream stage of the compressor, the axial and circumferential gap of radially extending pins attached to the "floating" lug-nuts assembled in each pair of hooks and the tight fit of the pins in the center pair of hooks allow for axial and circumferential thermal expansion and the bolted lug-nuts and outer case provide radial restraint, all of which combine to reduce stresses on the airfoil during engine transient conditions.

Abstract: A material treatment system for treatment of particulate material includes a transport conveyor including a transport surface for transporting particulate material through a treatment zone, conveying compartments attached to the transport surface, and foraminous cover structure travelling with and covering the conveying compartments. The system further includes a supply plenum above the treatment zone, a gas flow system for placing particles on the conveyor in fluidized condition as they move through the treatment zone, and exhaust structure for moving gases from the treatment zone upwardly away from the treatment zone. The conveying compartments and foraminous cover retain particulate material being fluidized and provide increased control of the position and movement of the particles passing through the treatment zone of the system.

Abstract: A vibration absorber having a mass member which when static is supported by in-plane springs spaced apart from a base plate, top plate and spring retaining structures. The mass member has a bumper surface for contacting a motion limiter in the base plate. The mass member, base plate and top plate can have a passageway through the axis. The vibration absorber can be tuned by proper selection of the springs, degree of precompression and the variation of the amount of mass by the addition or removal of mass tuning weights.

Abstract: A semiconductor device according to the present invention includes a resistant heating element as a temperature regulation means on a circuit board. A semiconductor chip of the device is connected to the circuit board through connecting electrodes. A difference in temperature between the semiconductor chip and circuit board is kept at a fixed value by controlling the resistant heating element.