Abstract: A bearing assembly for a gas turbine engine rotor includes a paired race, a bearing, a mounting joint, and a plurality of mechanical fuses. The paired race includes an outer race and an inner race. The bearing is between the inner and outer races, and is configured to support the rotor on a support frame. The mounting joint includes a joint inner race and a joint outer race. At least one of the joint inner race and the joint outer race includes a spherical surface. The mounting joint is configured to reduce dynamic loads to the gas turbine engine structure and static bending to the rotor. The plurality of mechanical fuses extend through at least one of the joint inner race and the joint outer race.

Abstract: A water, pump includes a driven portion, a shaft connected to the driven portion, an impeller connected to the shaft, and a body supporting the driven portion for relative rotation therewith. The water pump is characterized in that the driven portion and the shaft are formed integrally by resin molding, and an outer surface of the bearing is fixed to the driven portion.

Abstract: A pipe member is pushed into an inner periphery of a core of an armature to fix the pipe member to the armature. The pipe member is inserted over a fixed shaft. Bearing members have a small hole and a large hole formed at their centers. Pipe member ends are pushed into and fixed to the large diameter holes. The fixed shaft is inserted into the small holes to rotatably support the armature. A guide hole is formed at the center of an impeller of a pump unit, and is fitted to the bearing member, thereby the impeller rotates while the impeller is guided by the outer peripheral surface of the bearing member which rotates integrally with the armature. Coupling protrusions formed on the armature are inserted, and engaged with engagement recesses formed in the impeller to transmit a rotation force of the armature to the impeller.

Abstract: A thermal turbomachine, an axial flow gas turbine (10) in particular, includes a rotor (16), which at its exit side is supported on a bearing (15), which is situated on a bearing saddle (14) within an annular inner part (11) of an exhaust casing, the bearing saddle (14) being supported on a foundation of the machine by means of a spring support (25). In such a turbomachine, the stiffness of the bearing support is improved or restored by attaching the bearing saddle (14) to the inner part (11) of the exhaust casing by a spring-loaded bolted connection (19, . . . .,22).

Abstract: A compressor in which an electric motor and a compressing mechanism are accommodated in a case, a main shaft and an auxiliary shaft of a rotating shaft of the motor are supported by a radial plain bearing and a rolling bearing with a predetermined clearance given to the rotating shaft in an axial direction, a flange portion that contacts with a main-shaft receiving member of the radial plain bearing to align the rotating shaft with the compressing mechanism is provided on the main shaft, and preload toward the side of the rolling bearing is given to the rotating shaft. In this constitution, a prevention member for preventing contact and/or collision of the rotating shaft with the main-shaft receiving member is provided between opposing faces of the flange portion and the main-shaft receiving member.

Abstract: A bushing and washer forming a bearing assembly at the outer radial end of a stator vane, the outer bearing assembly, and the bearing assembly at the inner radial end of the stator vane, the inner bearing assembly, that facilitate durability, effectiveness and reduced cost. Both the inner and outer bearing assemblies are designed to rotate relative to the vane shaft and the respective mating shroud or case to even out the wear around the circumference of the bushing. However, the bushing is designed so that if the relative wear rate between the bushing material and the vane or the shroud/case is high, the bushing will not rotate relative to that material. When a rotating bushing is used, a flange on the bushing is designed to be positioned on the inside of the case, so that a pressure differential across the case applies a force to the vane to move it outwardly against the flange and the flange against the case, thereby minimizing air leakage.

Abstract: A structure of a water pump is provided without increasing the cost thereof, or without enlarging the size to improve the durability of the water pump. A seal apparatus having a seal ring 13 and a slinger 14 in combination to prevent foreign matter from progressing into the rolling bearing 6a. The amount of compression &dgr; of the second seal lip 23, which occurs when the tip edge of the second seal lip 23 of the seal ring 13 comes in contact with the outer peripheral surface of the outer-diameter-side cylindrical section 26 that is formed at the outer peripheral edge of the slinger 14, is at least {fraction (1/10)} and up to {fraction (7/10)} the height of the second seal lip 23 in the free state. In addition, the roughness of a portion of the outer peripheral surface of the outer-diameter-side cylindrical section 26 which the tip edge of the second seal lip 23 comes in sliding contact with is from 0.2 &mgr;m to 2.0 &mgr;m in the arithmetic mean Ra, or is from 0.8 &mgr;m to 8.

Abstract: A ball bearing (18) that carries a rotor side portion of a rotor shaft (16) includes an inner race (23), an outer race (24), and a plurality of balls (25). The inner race has an enlarged end face (S1) which supports a supporting part (22) of a rotor (13). The enlarged end face has a diameter (D1) which is at least as large as a reference diameter (D3) minus 34% of a diameter of the balls (25). The flexural strength of the rotor shaft is increased at the location of the ball bearing (18). The natural bending frequency also increases and is caused to be above an operating frequency of the rotor shaft. Resonances are also avoided.

Abstract: A system is provided for changing the critical speed of a shaft that includes: a first shaft supported for relative rotational movement with respect to a stationary structure, a forward bearing disposed at the forward end of the shaft, an aft bearing disposed at the aft end of the shaft, at least one active bearing disposed between the forward bearing and the aft bearing, and means for changing the support stiffness of the active bearing.

Abstract: A blower is provided for effectively cooling heat generating parts in a casing of a personal computer and so on, with a heat sink apparatus using the blower and an electronic equipment using the heat sink apparatus. The blower comprises a fan and an outer frame. The outer frame of the fan is made of a highly thermally conductive material such as aluminum. A radiation board is fixed to or formed integrally with a lower surface of the outer frame. Heat generated from a heat generating device is conveyed through the radiation board to the outer frame. The blower is provided with radiation fins so that the heat conveyed to the outer frame is transferred to the radiation fins as well.

Abstract: A steam turbine includes a turbine casing, in which a turbine rotor is accommodated so as to extend along a direction of flow of steam, and a plurality of turbine pressure sections are mounted to the turbine rotor, which includes, in combination, at least two or more of a turbine high pressure portion, a turbine intermediate pressure portion and a turbine low pressure portion. The turbine casing is divided into two casing sections, each of the divided turbine casing sections being further divided into a turbine casing upper half and a turbine casing lower half, and the turbine casing lower halves of the divided turbine casing sections being connected to each other by a fastening member such as stud bolt inserted from a side of the turbine low pressure portion.

Abstract: The invention relates to a liquid tank with centrifugal pump with a substantially vertical pump shaft for discharging of the liquid, wherein the pump is arranged with the intake side at the bottom of the tank and via a drive shaft connected to drive means preferably arranged above the tank, where the drive shaft with a coupling is in operable connection with the pump shaft, and wherein the pump near the coupling has a first main shaft at the upper end of the pump shaft and a second main bearing opposite the coupling at the lower end of the pump shaft near the tank bottom, and wherein there is connection between the discharge side of the pump step opposite each bearing and the bearing faces of the relevant bearing, and wherein there is provided an outlet from each bearing to the intake side of the pump step.

Abstract: A fan assembly includes a mounting tube having an annular flange extending radially and inwardly from an inner wall surface thereof. A rotor includes a rotor shaft extending into the mounting tube. First and second bearings are sleeved on the rotor shaft, and each has an abutment plate, and a peripheral flange that extends axially from the abutment plate, that slidably contacts the inner wall surface of the mounting tube, and that cooperates with the rotor shaft and the abutment plate to define a lubricant-receiving reservoir thereamong. Two annular bearing-covering caps are sleeved on the rotor shaft to sealingly cover the lubricant-receiving reservoirs in the first and second bearings.

Abstract: A bushing for a fan assembly includes a through hole longitudinally defined through the bushing for receiving therein a journal of the fan assembly and grooves each longitudinally defined in an inner periphery defining the through hole to communicate with the through hole. The grooves are able to collect residue arising from friction between the journal and the inner periphery of the bushing so that rotation of the journal is not hindered.

Abstract: A trunnion support for a variable-position stator vane in a turbomachine. The stator vane includes an upper trunnion and a lower trunnion to allow the stator vane to be pivoted about a longitudinal axis. The lower trunnion is supported in a bushing that is carried in an opening provided in an annular stator vane carrier ring. The bushing is longitudinally split and is installed in the carrier ring while in a laterally compressed condition so that when installed in the carrier ring the bushing bears against the carrier ring opening in which it is positioned. When the carrier ring material expands with rising temperature, the pre-stress in the bushing will cause it to expand to maintain tight frictional engagement between the bushing and the opening and thereby prevent relative rotation between the bushing and the carrier ring to minimize wear of the carrier ring material.

Abstract: The Cu-based sintered alloy bearing of the present invention is made of a Cu-based sintered alloy with a composition consisting of, by weight, Ni: 10 to 25%, Zn: 10 to 25%, P: 0.1 to 0.9%, C: 0 to 5%, molybdenum disulfide: 0.5 to 5%, and Cu and inevitable impurities as the balance. The Cu-based sintered alloy has a texture from a Cu—P compound, free graphite, and molybdenum disulfide being dispersed in a base material made of a solid solution phase of a Cu—Ni—Zn alloy, and a porosity is within a range of 5 to 25%.

Abstract: A gas bearing system for use in a turbocompressor or similar device that embodies a uniquely configured thrust washer or disk that exhibits superior strength characteristics when the disk is rotated at high speed. The thrust washer is a generally circular-shaped disk, has a predetermined diameter and comprises a body portion having spaced apart faces and a generally “V” shaped groove formed intermediate the spaced-apart faces to define a pair of radially outwardly extending segments.

Abstract: A wind wheel assembly of a separable air conditioner which comprises the following components. A plurality of multi-sectional wind wheels is fixed to a seat of the separable air conditioners. At least one motor is positioned on at least one respective positioning plate, each motor being connected between two wind wheels. A plurality of bearings are positioned on at least one respective positioning plate; each bearing being positioned between two wind wheels or positioned at the outer side of two outermost wind wheels. The at least one motor and the plurality of bearing are alternatively arranged; thereby, the wind wheel assembly is operated smoothly and steadily.

Abstract: An arrangement for the releasable fastening of struts serving as bearing carriers for the rotor of an aeronautical gas turbine to the casing structure of the aeronautical gas turbine, with stop faces, arranged in the circumferential direction and in the axial direction of the rotor of the gas turbine, at that end of the strut which faces away and acts as a connection head, the said stop faces being assigned matching stop faces on the casing structure of the aeronautical gas turbine, and with a screw connection, inclined at an angle, between the casing structure and the connection head of the strut, for the purpose of the positive and non-positive retention of the strut on the casing structure.

Abstract: In combination, a gas turbine engine component having a centerline and a partial flange for connecting the component to the gas turbine engine extending only partially around the centerline and terminating in spaced apart ends of the flange, and a support element releasably attachable to the flange and extending between the ends of the flange for bridging the ends of the flange to prevent the ends from puncturing a vacuum bag when installed around the flange and to prevent the vacuum bag from distorting the component.

Abstract: The present invention provides a modular submersible pump comprising a motor section, bearing section and a pump section. The motor section includes a motor frame and a motor shaft. The bearing section has a bearing frame removably connected to the motor frame of the motor section. A removable cartridge is disposed within the bearing frame and has a shaft extension connected to the motor shaft. The cartridge includes at least one bearing and at least one seal in communication with the shaft extension. The pump section has a pump case removably connected to the bearing frame and having an impeller disposed therein. The impeller is connected to the shaft extension of the removable cartridge.

Abstract: A gas turbine engine including a rotor shaft includes a bearing isolation system including an isolation shaft and a pair of pilots. The pilots are disposed between the isolation and rotor shafts and connect the isolation shaft to the rotor shaft to form a gap between the isolation and rotor shafts. The pilots are positioned axially along the rotor shaft and permit the isolation shaft to move axially with respect to the rotor shaft. Each pilot includes a plurality of openings to permit cooling air to flow within the gap defined between the isolation shaft and the rotor shaft.

Abstract: An adjustable and stable pre-loading device equipped fan includes a stator, a first rigid spacer, a first bearing, an elastic device, a second bearing, a second rigid spacer, a rotor and a shaft. Among these, the stator includes a receptacle. The first bearing is formed on the first rigid spacer in the receptacle. The elastic device is formed in the receptacle and further on the first bearing. The second rigid spacer is formed on the second bearing on the elastic device. The rotor is coupled to the stator and has a blade structure. The first rigid spacer compresses the elastic device by means of the first bearing. The second rigid spacer compresses the elastic device by means of the second bearing. The distance between the first rigid spacer and the second rigid spacer is adjustable, thereby altering pre-loading applied on the first bearing and the second bearing.

Abstract: A fan having stable pre-loading device includes a stator, at least one bearing, a rotor having a blade structure, a shaft and a rigid spacer. Among these, the bearing is formed in the space of the stator. One terminal of the shaft is coupled to the stator. The elastic device is formed on the bearing. The rigid spacer is formed on and thus compresses the elastic device. Another terminal of the shaft passing the rigid spacer as well as the elastic device is coupled to the inner ring of the bearing.

Abstract: A self lubricating bearing for use submerged in cryogenic fluids. The self-lubricating bearing comprises hardened races, hardened rolling elements and polymeric retainers or cages. More particularly, the rolling elements may be hardened balls, and the polymeric cages may include PEEK. In particular a bearing for self lubricated use in seal-less, magnetic drive pump for pumping fluids at very low temperatures and cryogenic temperatures below about −100 degrees centigrade such as liquid nitrogen and temperatures below about −150 degrees centigrade such as liquefied natural gas (LNG). An environment for submerged use of such a bearing may be a magnetically driven cryogenic pump with a housing having an intake and exhaust with a back plate mounted therein in which a shaft is journaled in self-lubricating bearings having hardened stainless steel or ceramic balls, stainless steel races and polymeric retainers or cages for retaining the balls for rolling contact in the races.

Abstract: A lubrication system for equipment (e.g. centrifugal pump) employing a rotating shaft and corresponding support bearings is disclosed. The lubrication system includes a lubricant dispenser having a plurality of blades or dispensing members pivotally attached thereto, the dispenser affixed to the shaft for rotation therewith. Centrifugal force created by rotation of the shaft to which the dispensing blades are attached causes the blades to extend radially outward from the shaft center during operation so as to dispense the lubricant throughout a lubricating or misting chamber in order to lubricate the adjacent bearings. The system is also advantageous in that the blades are permitted to pivot or flap downward toward the shaft in either direction so that the dispenser may be more easily inserted into the misting chamber during manufacturing of the device or replacement of the lubricating system.

Abstract: A fan having stable pre-loading device includes a stator, at least one bearing, a rotor having a blade structure, a shift and a rigid spacer. Among these, the bearing is formed in the space of the stator. One terminal of the shaft is coupled to the stator. The elastic device is formed on the bearing. The rigid spacer is formed on and thus compresses the elastic device. Another terminal of the shaft passing the rigid spacer as well as the elastic device is coupled to the inner ring of the bearing.

Abstract: A bearing assembly for a gas turbine engine rotor includes a damper bearing configured to support the rotor, a bearing centering sub-assembly configured to position the damper bearing relative to the rotor, and a retainer. The damper bearing includes a frame that defines a bearing bore, an inner race, and an outer race, said inner and outer races within said bearing bore. The bearing centering apparatus sub-assembly includes a plurality of first springs and a plurality of second springs. The retainer is coupled to the bearing housing and is configured to maintain an axial position of the bearing outer race with respect to the support structure.

Abstract: A lubrication system for equipment (e.g. centrifugal pump) employing a rotating shaft and corresponding support bearings is disclosed. The lubrication system includes a lubricant dispenser having a plurality of blades or dispensing members pivotally attached thereto, the dispenser affixed to the shaft for rotation therewith. Centrifugal force created by rotation of the shaft to which the dispensing blades are attached causes the blades to extend radially outward from the shaft center during operation so as to dispense the lubricant throughout a lubricating or misting chamber in order to lubricate the adjacent bearings. The system is also advantageous in that the blades are permitted to pivot or flap downward toward the shaft in either direction so that the dispenser may be more easily inserted into the misting chamber during manufacturing of the device or replacement of the lubricating system.

Abstract: A blower assembly for a split air conditioner comprises a casing having a bearing trough in one end, a pair of rubber sleeve troughs in the other opposite end, a plurality of central hollow posts each having a threaded hole; and a blower having a plurality of blower units each having a shaft in one end and a hole in the other opposite end, at least one bearing seat, a plurality of bearings, at least one motor, a plurality of rubber sleeves mounted on the motor and together rested on the rubber sleeve troughs, and a plurality of plates for threadedly securing the rubber sleeves. By utilizing these components, a variety of advantages are obtained such as an increase of draft, more stable operation, no abnormal expansion and contraction, and noise reduction.

Abstract: A mini fan for computer is disclosed, which includes a housing, a motor, self-lubricated axle bearings respectively adapted to the center hole of the motor, and a fan blade unit supported in the self-lubricated axle bearings for smooth rotation upon operation of the motor, the self-lubricated axle bearings being made of high molecular heat resisting compound material or high molecular compound material of low coefficient of friction for the advantages of low manufacturing cost and low operation noise level.

Abstract: An expansion turbine for low-temperature applications containing a turbine stage into which a cold gas is admitted. A turbine rotor is mounted on a shaft. Also provided is a roller support for the shaft being lubricated with a minimum amount of oil or grease. The roller support contains a roller bearing located adjacent to the turbine stage. The roller bearing is comprised of an inner bearing ring, rollers, and an outer bearing ring supported on the side of the housing. An insulating bush made of ceramic engineering material is arranged between the inner bearing ring and the shaft. The bush thermally separates the inner bearing ring from the cold shaft.

Abstract: The present invention provides a modular submersible pump comprising a motor section, bearing section and a pump section. The motor section includes a motor frame and a motor shaft. The bearing section has a bearing frame removably connected to the motor frame of the motor section. A removable cartridge is disposed within the bearing frame and has a shaft extension connected to the motor shaft. The cartridge includes at least one bearing and at least one seal in communication with the shaft extension. The pump section has a pump case removably connected to the bearing frame and having an impeller disposed therein. The impeller is connected to the shaft extension of the removable cartridge.

Abstract: A water, pump includes a driven portion, a shaft connected to the driven portion, an impeller connected to the shaft, and a body supporting the driven portion for relative rotation therewith. The water pump is characterized in that the driven portion and the shaft are formed integrally by resin molding, and an outer surface of the bearing is fixed to the driven portion.

Abstract: A seal apparatus is comprised of a seal ring 13 and a singer 14 in combination to prevent foreign matter from progressing into the rolling bearing 6a. The amount of compression &dgr; of the second seal lip 23, which occurs when the tip edge of the second seal lip 23 of the seal ring 13 comes in contact with the outside surface of the singer 14, is at least {fraction (1/10)}and up to {fraction (7/10)}the height of the second seal lip 23 in the free state. In addition, the roughness of a portion of the outside surface of the singer 14 which the tip edge of the second seal lip 23 comes in sliding contact with is from 0.2&mgr;m to 2.0&mgr;m in the arithmetic mean Ra, or is from 0.8 &mgr;m to 8.0 &mgr;m in the maximum height Ry. Consequently, a structure of a water pump is provided without increasing the cost thereof, or without enlarging the size to improve the durability of the water pump.

Abstract: A variable gas turbine compressor vane structure includes a gas turbine compressor vane having a vane support at an end thereof, and a case structure having a bearing support disposed to engage the vane support of the gas turbine compressor vane. The bearing support is typically a bearing bushing or a bearing washer. The bearing support is made of a metal skeleton having open-cell porosity extending therethrough, and an infiltrant material such as an organic or a ceramic infiltrated into the porosity of the metal skeleton.

Abstract: A variable stator vane assembly for a gas turbine engine including a bushing that facilitates extending a useful life of the stator vane assembly is described. The stator vane assembly includes a spacer and a vane secured to an engine casing. The bushing is between the spacer and vane, and prevents the spacer and the vane from contacting the engine casing. The bushing is fabricated from several materials formed in a matrix, such that at least a portion of the bushing is electrically conductive. During engine operation, a conductive path is realized through the bushing that discharges electrical charges.

Abstract: A centrifugal pump includes a C-shaped sealing assembly including an annular spring disposed between opposing legs of a base member. The spring biases the legs away from one another into sealing positions. In other embodiments, a vertical pump may be provided so as to include an oil recirculation system which enables an oil-based lubricant to be utilized instead of grease. In still other embodiments, the axial location of a pump shaft may be adjusted by rotating a bearing housing relative to the bearing frame where the two are threadedly connected to one another.

Abstract: A sealing device is disclosed comprising a least one sealing leaf maintained axially in position by a retaining bracket which comprises a first end bearing on the sealing leaf and a bent-back second end engaged in a groove in a structural element. The sealing leaf is preferably retained radially in position by lugs which are bent so as to engage below lugs provided on the retaining bracket. When the sealing device comprises at least two adjacent sealing leaves placed edge to edge, the device also comprises a cover sheet so disposed between the sealing leaves and the retaining bracket as to cover the joint between the two adjacent leaves.

Abstract: A rotor assembly for a gas turbine engine including a bearing centering sub-assembly that facilitates reduces an effect of radial forces transmitted to a bearing assembly is described. The bearing assembly supports a rotor shaft with a rolling element positioned radially inward from an outer race. The bearing centering sub-assembly is coupled to the outer race and includes a plurality of first springs and a plurality of second springs extending circumferentially in rows. Each first springs is coupled between a second spring and the outer race such that each first spring is radially aligned with respect to each second spring.

Abstract: A rotor assembly for a gas turbine engine including a bearing assembly and a damper sub-assembly that facilitate reducing dynamic motion to the rotor assembly is described. The bearing assembly includes rolling elements positioned between a paired race. The rotor assembly includes a rotor shaft supported by the bearing assembly. The damper sub-assembly is radially outward from the bearing assembly adjacent a sump housing, and includes a damper insert. A predetermined preload force is applied to the rolling elements. An outer race of the bearing assembly distorts to substantially match a distortion pattern of the damper insert.

Abstract: A bearing support for a rotor of an aircraft turbine engine includes a frangible linkage designed to enable the engine to safely shut down despite the introduction of an excessive unbalance to the fan stage.

Abstract: An improved rotary compressor (1) for respiration systems with breathing gases transported in a closed system. This rotary compressor (1), which can be washed and sterilized, is has an electrically driven compressor wheel (5) mounted by means of an aerodynamic gas slide bearing. The gas slide bearing comprises radially and axially loaded surfaces, wherein either the axially loaded surface (10) of the compressor wheel (5) or the axially loaded, nonmoving housing surface (11) has grooves (22).

Abstract: A variable stator vane assembly for a gas turbine engine including a bushing that facilitates extending a useful life of the stator vane assembly is described. The stator vane assembly includes a spacer and a vane secured to an engine casing. The bushing is between the spacer and vane, and prevents the spacer and the vane from contacting the engine casing. The bushing is fabricated from several materials formed in a matrix, such that at least a portion of the bushing is electrically conductive. During engine operation, a conductive path is realized through the bushing that discharges electrical charges.

Abstract: A blower assembly for a split air conditioner comprises a casing including a bearing trough in one end, a pair of rubber sleeve troughs in the other opposite end, a plurality of central hollow posts each having a threaded hole; and a blower including a plurality of blower units each having a shaft in one end and a hole in the other opposite end, at least one bearing seat, a plurality of bearings, at least one motor, and a plurality of rubber sleeves mounted on the motor and together rested on the rubber sleeve troughs, a plurality of plates for threadedly securing the rubber sleeves. By utilizing this, a variety of advantages are obtained such as an increase of draft, more stable operation, no abnormal expansion and contraction, and noise reduction.

Abstract: An electric motor having a housing, having an armature, having an armature shaft supported in two slide bearings, where one of the slide bearings axially displaceably receives the armature shaft and the other slide bearing limits an axial displaceability of the armature shaft by the disposition of a stop disk between a slide bearing bush of the slide bearing and the armature, by the disposition of an axial stop, in the form of a stop ring pressed over one end of the armature shaft. The armature shaft end protrudes out of the housing and is intended for carrying and driving a fan wheel that has a hub which is located adjacent the particular a slide bearing that receives only radial forces.

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: An adjustable and stable pre-loading device equipped fan includes a stator, a first rigid spacer, a first bearing, an elastic device, a second bearing, a second rigid spacer a rotor and a shift. Among these, the stator includes a receptacle. The first bearing is formed on the first rigid spacer in the receptacle. The elastic device is formed in the receptacle and further on the first bearing. The second rigid spacer is formed on the second bearing on the elastic device. The rotor is coupled to the stator and has a blade structure. The first rigid space compresses the elastic device by means of the first bearing. The second rigid space compresses the elastic device by means of the second bearing. The distance between the first rigid spacer and the second rigid spacer is adjustable, thereby altering pre-loading applied on the first bearing and the second bearing.

Abstract: The present invention is directed to a pump system. The pump system has a motor, a pump shaft, a pumping section, a connecting column, and a shaft isolator. The motor drives the pump shaft and has a bottom surface above a desired medium. The pumping section has a top surface that receives the pump shaft and pumps the desired medium to a predetermined instrument. The connecting column surrounds a predetermined portion of the pump shaft and connects the motor support and pumping section together. The shaft isolator is positioned between the connecting column and the pump shaft, and extends from the top surface of the pumping section to a predetermined height above the desired medium and below the bottom surface of the motor. The resulting pumped medium has an acceptable amount of entrained air that will not adversely affect the predetermined instrument.

Abstract: A pump has a thrust bearing has a casing with an inlet port and a discharge port. A shaft is positioned within the pump. A thrust bearing is coupled to the shaft. A pressure alterable bearing cavity is located within the casing. The pressure alterable cavity allows the axial thrust on the shaft from the impellers to be counteracted. The thrust bearing has an annular seal coupled with respect to the casing disc is coupled to the shaft and positioned adjacent the seal. The seal and the disc have a gap therebetween. A feedback pipe couples the bearing cavity to the inlet port. As the axial thrust acting on the shaft changes, the gap between the seal and the disc also changes. The changing of the gap changes the pressure within the bearing cavity. The disc and thus the shaft are repositioned in response to the change in the bearing cavity pressure change.