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| Number | Title | Issue Date |
| 7435051 | Multi-stage blower A blower is formed with multiple sets of rotatable rings of blades coupled to each other. Multiple inlet rings are correspondingly coupled to the multiple sets of rotatable rings of blades. In one embodiment, the blades may be forward facing blades and include a vol... | 10/14/2008 |
| 7338251 | Turbo compressor A turbo compressor comprising a driving motor, an impeller to be rotated by the driving motor, a second gas suction part through which gas is introduced into the impeller, and a discharger through which the gas is discharged from the impeller, the turbo compressor c... | 03/04/2008 |
| 7165942 | Fan impeller with integrated grease separation, especially for cooking appliance The disclosure relates to a fan impeller including a base plate and a plurality of fan impeller blades fixed to the plate. The fan impeller blades are positioned in an essentially vertical manner on the base plate and have a substantially radial arrangement, each fa... | 01/23/2007 |
| 7163371 | Centrifugal fan A centrifugal fan is configured to be capable of preventing turbulence of the flow in the vicinity of an inlet. The centrifugal fan is a multi blade fan that takes gas in from a rotational axis line direction and blows the gas out in a direction that intersects the ... | 01/16/2007 |
| 7118344 | Wind power plant for generating energy A wind power system (1) for generating power is proposed, comprising a rotor which is axially flowed through, is rotatably held on a shaft (2) and is provided with blades (3), as well as a guide device (5) which accelerates the air flow t... | 10/10/2006 |
| 7114921 | Fan and blower unit having the same A cooling fan includes a cylindrical boss portion, a plurality of blades extending from the boss portion in a radial direction and a ring member integrated with radial outside edges of the blades. The ring member has an axial dimension smaller than an axial dimensio... | 10/03/2006 |
| 7086825 | Fan A fan is provided for use with a casing having a bellmouth and a conduit portion. The fan has a hub, a number of blades extending from the hub, and a shroud. In cooperation with the casing and the conduit portion surrounding the shroud, the shroud has means for gene... | 08/08/2006 |
| 7037069 | Impeller and wear plate In one aspect, there is provided a wear plate for use in combination with a centrifugal pump and impeller. The wear plate has a wear surface defined by a substantially flat surface, a truncated conic section, and/or a curvilinear solid of revolution formed by revolv... | 05/02/2006 |
| 6964555 | Centrifugal blower In a centrifugal blower, a centrifugal fan is housed in a scroll casing and driven by a motor. The scroll casing includes a suction scroll wall and a motor scroll wall. The scroll casing forms a scroll air passage between a first protruding portion of the suction sc... | 11/15/2005 |
| 6953320 | Ventilation fan A ventilation fan assembly (10) having a fan (22) mounted in a housing (12) and a shutter assembly (60). The housing has a square inlet portion (12C), a circular center portion (12E) and a conical outlet portion (12D)... | 10/11/2005 |
| 6776578 | Winglet-enhanced fan Small winglets placed at the outer end of each fan blade substantially reduce the vortices created in conventional fans by the pressure differential between the low pressure and high pressure sides of the blade. The winglet acts as a barrier, which substantially blo... | 08/17/2004 |
| 6726442 | Disc turbine inlet to assist self-starting A disc turbine inlet collects working fluid, introduces it into the rotor housing at a defined location and imparted at a defined injection angle with respect to the tangential motion of the discs in rotary motion. An injection angle within the optimum range delinea... | 04/27/2004 |
| 6558116 | Gas-cooled machine, in particular a turbo-generator A turbo-generator comprising a shaft, on which is positioned an axial ventilator, a cover that divides an inflow chamber for a cooling gas transported by the axial ventilator from an outflow chamber for this cooling gas, and a cylindrical channel segment ... | 05/06/2003 |
| 6532731 | Turbofan engine having central bypass duct and peripheral core engine A turbofan engine has a fan bypass duct which is at the center of the engine surrounding the fan and compressor drive shafts and an annular drive engine which is located at the outer periphery of the engine surrounding the bypass duct. The annular drive e... | 03/18/2003 |
| 6517315 | Enhanced performance fan with the use of winglets Small winglets placed at the outer end of each fan blade substantially reduce the vortices created in conventional fans by the pressure differential between the low pressure and high pressure sides of the blade. The winglet acts as a barrier, which substa... | 02/11/2003 |
| 6413045 | Turbine blades The shroud (26) of a shrouded turbine blade (22) has a convex leading edge (30) the apex of which extends towards the trailing edge of the shroud (24) of an adjacent, preceding guide vane. The extension enables the containment of a reverse flow of high pr... | 07/02/2002 |
| 6398492 | Airflow guide stator vane for axial flow fan and shrouded axial flow fan assembly having such airflow guide stator vanes An airflow guide stator vane for an axial flow fan and a shrouded axial flow fan assembly having such stator vanes are disclosed. The airflow guide stator vane has a leading edge line, a trailing edge line, and an airflow guide surface extending from the ... | 06/04/2002 |
| 6390770 | Fan device and shroud A fan apparatus includes a fan having a plurality of blades and producing an air flow with revolution thereof. At least one shroud is disposed upstream of the fan for introducing the air flow to the suction side of the fan. Damping means are provided for ... | 05/21/2002 |
| 6328529 | Cooling device with support members facing fin A blower for flowing cooling air toward a corrugated fin is disposed to face the corrugated fin. The blower is covered with a blower case. Leg portions are integrally formed with and protrude from the blower case to face the corrugated fin at both sides i... | 12/11/2001 |
| 6273672 | Two-phase helical mixed flow impeller with curved fairing A compression or expansion two-phase helical mixed flow impeller (1) comprising one or more vanes (3) mounted on a boss, a cover (4) or fairing mounted on the outer part of the vanes, the assembly being arranged in a housing (2). The cover (4) has at leas... | 08/14/2001 |
| 6270310 | Fuel pump assembly A fuel pump assembly 10 including a motor 12, a drive shaft 14 which is rotatably coupled to motor 12, an impeller 16, and a chamber assembly 18. Fuel pump assembly 10 has improved efficiency due to the substantial reduction and/or elimination of friction... | 08/07/2001 |
| 6227797 | Rotary pump with hydrodynamically suspended impeller This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blade... | 05/08/2001 |
| 6164911 | Low aspect ratio compressor casing treatment A compressor for a gas turbine engine, comprising a casing having an inner surface defining a plurality of circumferentially spaced-apart grooves adjacent the tips of a row of rotor blades. Each groove as a depth which is less than half the width thereof ... | 12/26/2000 |
| 6142733 | Stator for fan A fan assembly comprising a fan, a stationary airflow directing device and a support inner ring. The fan has a hub portion and a plurality of fan blades. Each of the fan blades has a root region and a tip region. The root regions of each fan blade are sec... | 11/07/2000 |
| 6027307 | Fan and shroud assembly adopting the fan A fan includes a hub coupled to a driving shaft of a motor, a plurality of blades installed on the outer circumferential surface of the hub to be spaced from each other at a predetermined interval, and a band connecting free ends of the blades. An axial d... | 02/22/2000 |
| 5755555 | Rotating fan having tapered disk component A rotating fan assembly is provided for use in single stage and multi-stage applications. The fan assembly includes a fan member having a tapered disk member, a flat annular ring member and a plurality of blade members interposed between the disk and the ... | 05/26/1998 |
| 5342171 | Impeller blade with reduced stress A fluid impeller blade with lowered stress and increased useful life has an edge extending from the hub of the blade and forming, in part, a boundary for axial fluid flow. The edge, at least at its extremity, is spaced axially into the blade, at an angle ... | 08/30/1994 |
| 5249927 | Profiled annular hoop for a fan helix and its application to vehicle motorized fans The profiled annular hoop for a fan helix blade tip exhibits a curved inlet collar whose convexity is directed towards the axis (100), and is characterized in that this collar (11) has a given axial length (l) and a meridian section (110) shaped approxima... | 10/05/1993 |
| 5249923 | Water actuated outdoor fan A water actuated outdoor fan which includes a plurality of radiating blades for creating a current of air, and a water turbine for converting the kinetic energy of moving water to mechanical power to operate the plurality of radiating blades.... | 10/05/1993 |
| 5226790 | Peripheral-longitudinal diffusser for a single-impeller centrifugal pump The invention discloses a single-impeller pump with a diffuser (1, 40, 50, 60, 80, 100, 120, 130) arranged in front of the impeller (14, 46, 57, 107) on the suction side of the impeller (14,46,57,107) which evolves in the longitudinal direction toward the... | 07/13/1993 |
| 5071317 | Centrifugal pump having a unitary one-piece diffusion casing and a unitary one piece turbine impeller unit A multiple-stage pump has a one-piece diffusion casing and a one-piece multiple turbine impeller. The casing has multiple diffusion chambers enclosing respective multiple impeller sections. The casing and the impeller have adjacently disposed surfaces at ... | 12/10/1991 |
| 4806078 | Device for transmitting torque to brittle impellers of fluid flow machines A centrifugal pump wherein the back shroud of a brittle impeller of ceramic or glass is coupled to the radially outwardly extending disc of a metallic adapter whose hub receives torque from the pump shaft. The adapter has a flange which surrounds the peri... | 02/21/1989 |
| 4588353 | Submersible pump A submersible pump especially usable for civil engineering works is provided in which a wear resistant protecting member is disposed at the portion opposing the backside of an impeller shroud to protect that portion from wear due to abrasion by earth and ... | 05/13/1986 |
| 4533292 | Turbine rotatable in one direction in a reciprocating flow A turbine includes a plurality of blades mounted on a rotary pedestal such that the pedestal is rotatable in the same direction regardless of the direction of flow. Conversion efficiency is improved by generally locating the zero lift plane of the blades ... | 08/06/1985 |
| 4355954 | Pump impeller A bidirectional pump is provided which includes a pair of impellers each operable for pumping liquid in one direction of operation. One of the impellers has modified vane structure for reducing turbulent liquid flow conditions when rotated in a reverse di... | 10/26/1982 |
| 4324527 | Centrifugal pump A centrifugal pump adapted for use in a fermentor is provided. The fermentor includes an outer vessel which has mounted therein a generally centrally located draft tube. A centrifugal pump is mounted adjacent to one end of the draft tube and is operably c... | 04/13/1982 |
| 4243357 | Turbomachine A turbomachine, operable as a compressor or a turbine, for a compressible fluid is provided which includes a wheel having a plurality of vanes extending from a generally axial flow section to a generally radial flow section. Adjacent vanes define fluid pa... | 01/06/1981 |
| 4227855 | Turbomachine A turbomachine for a compressible fluid is provided which includes a compressor wheel having a plurality of vanes extending from a generally axial flow inlet to a generally radial flow outlet. Adjacent vanes define fluid passageways having a generally axi... | 10/14/1980 |
| 4223239 | Multiphasic pump for rotating cryogenic machinery A mixed phase pump for rapidly rotating cryogenic machinery is disclosed, preferably for installation to a superconducting generator rotor. The superconducting generator rotor includes an inner and outer rotor structure joined in a thermally insulated con... | 09/16/1980 |
| 4213426 | Shrouding for engine mounted cooling fan Engine cooling fan shrouding comprising a flexible shroud mounted on a stationary component within the engine compartment and a rotating shroud carried by the blade tips of an engine mounted cooling fan. With this arrangement, there is small clearance bet... | 07/22/1980 |
