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| Number | Title | Issue Date |
| 4957411 | Turbojet engine with fan rotor blades having tip clearance In a turbojet engine of the kind having a fan, the face of the radially outer tip of each rotor blade of the fan has a radiussed profile centered at a point R situated in a position displaced on the concavely curved side of the blade relative to its radia... | 09/18/1990 |
| 4921404 | Propellors for watercraft A propellor (10) for watercraft has a hub (11) with a pair of blades (12) with a leading portion (13) central portion (14) and trailing portion (15). The leading portion (13) of the blades are forwardly inclined relative to the hub (11) and the blades pro... | 05/01/1990 |
| 4915590 | Wind turbine blade attachment methods A rotor blade for a horizontal axis wind turbine wherein a multiplicity of sucker rods are utilized internally of the blade root for securing the blade to the rotating hub of the turbine including the method of attaching the blade root to the hub and the ... | 04/10/1990 |
| 4902196 | Gas-moving device A gas-moving device comprises (a) a rotor which comprises a plurality of fibres, filaments, tapes, ribbons, strips or sheets which are mounted such that on rotation of the rotor they move in one or more planes which are substantially transverse to the axi... | 02/20/1990 |
| 4897021 | Stator vane asssembly for an axial flow rotary machine A stator vane assembly 30 for a rotary machine is disclosed. The stator vane assembly includes an array of stator vanes 44 and an inner air seal 46. Various construction details which damp vibrational stresses in the vanes are developed. In one embodiment... | 01/30/1990 |
| 4883405 | Turbine nozzle mounting arrangement The invention comprises a turbine nozzle and nozzle support assembly in which a turbine nozzle support seating flange is positioned adjacent to a turbine nozzle mounting flange and pins are used to affix the turbine nozzle to the nozzle support. Retainer ... | 11/28/1989 |
| 4883404 | Gas turbine vanes and methods for making same This invention relates to vanes for gas turbines and methods for making them. Embodiments include vanes that have internal fluid travel paths and cavities to permit the passage of fluids therethrough. Such embodiments have an internal structure member sup... | 11/28/1989 |
| 4881872 | Steam turbine for part load operation In steam turbines operated with nozzle group control (3) in part load operation, a swirl cascade (4) is fitted downstream of the control wheel (2) in the flow direction. The partial flows emerging from the control wheel (2) are provided with a distinct sw... | 11/21/1989 |
| 4880352 | Centrifugal liquid pump A centrifugal liquid pump including a housing section having an intake cavity and defining a rotational axis of the pump. An impeller section is in communication with and extends coaxially of the intake cavity of the housing section. An impeller is mounte... | 11/14/1989 |
| 4878812 | Turbine rotor A turbine rotor having a ceramic turbine wheel having an improved resistance to cracking and breaking. The turbine wheel is made of a ceramic material having pores formed therein with a maximum diameter of 20 μm distributed in the blade portion of the wh... | 11/07/1989 |
| 4877373 | Vaned diffuser with small straightening vanes An improved vaned diffuser includes primary and secondary curved vanes. The secondary vanes are located radially outward of the leading edges of the primaries. A plurality of secondary vanes is associated with each pair of first row vanes. The camber or c... | 10/31/1989 |
| 4877371 | Pump A vertical turbine pump comprises an assembly including a rotatable pump shaft, an impeller, and an impeller bowl. The assembly is removably mounted in a fluid flow diverter that directs fluid at a right angle to the axis of rotation of the pump shaft the... | 10/31/1989 |
| 4877370 | Diffuser for centrifugal compressor A diffuser centrifugal compressor of a comprising a plurality of stator blades provided outside an impeller thereof, and which converts kinetic energy of fluid from the impeller into pressure energy by operation of the stator blade. The diffuser is provid... | 10/31/1989 |
| 4877372 | Multi-stage rotary pump A multistage rotary pump, which comprises a substantially closed pump body having a jacket surrounding the pump body in spaced relationship for the purpose of forming an annular return volume, a base element comprising suction and pressure connecting piec... | 10/31/1989 |
| 4875827 | Fluid pump and method for making the same A fluid pump has a casing and a support tube mounted within the casing. A rotatably mounted drive shaft is inserted through the support tube and has a propeller mounted on one end thereof for moving fluid through the pump. A helical shaped bearing is seat... | 10/24/1989 |
| 4875826 | Pitot pump assembly for a rotating fluid management device A pitot pump assembly including a rotating drum 12 having a central bore 14 and a cavity 20 between its two axial ends and at least one radially extending opening 22. A stationary shaft 24 is inserted within the bore 14 and includes a plurality of fluid p... | 10/24/1989 |
| 4874289 | Variable stator vane assembly for a rotary turbine engine A variable angle vane stator arrangement of relatively simple design is pided enabling widely variable angular stator vane positioning with little aerodynamic loss. This is accomplished by positioning the leading nose portion of each variable second row ... | 10/17/1989 |
| 4872808 | Centrifugal pump modular bearing support for pumping fluids containing abrasive particles A submersible centrifugal pump is disclosed. It includes a housing with a linear stack of axially mounted pumping units therein. Each unit constructed as a module with at least a first and a second impeller mounted to a central shaft. A diffuser forms an ... | 10/10/1989 |
| 4871294 | Axial-flow fan An axial-flow fan having a stepped housing defined by an inlet part and an outlet part, the outlet part having the inside diameter smaller than the inside diameter of the inlet part, the inlet part adjoined to an inlet tube of an inside diameter substanti... | 10/03/1989 |
| 4871295 | Modular rankine cycle vapor turbine A Rankine cycle power plant includes a plurality of vapor turbine modules, each having a shaft rotatably mounted in a housing, and a pair of axially spaced discs coupled together and mounted on the shaft for rotation therewith. Axial flow turbine blades a... | 10/03/1989 |
| 4869645 | Composite gas turbine blade and method of manufacturing same A composite gas turbine blade consists of an airfoil (1) in an oxide-dispersion-hardened nickel-based superalloy, in the condition of longitudinally directed coarse columnar crystals, and a shroud plate (6) or a shroud and a root (7), the latter items in ... | 09/26/1989 |
| 4869643 | Pump housing, mould parts of a mould wall for a pump housing and method of manufacturing a pump housing A pump housing, particularly meant for pumps of high yield and low lift, has a suction casing, a suction mouth and a volute arranged in the concrete substructure of a pump station. The volute is made by assembling thin-walled mould wall parts, mounting th... | 09/26/1989 |
| 4867644 | Composite member, unitary rotor member including same, and method of making A composite member includes circumferentially extending ceramic fibers in a metallic matrix. A rotor member integrally includes such a ceramic fiber/metal matrix composite member to reinforce a homogeneous remainder portion of the rotor member with respec... | 09/19/1989 |
| 4867638 | Split ring seal of a centrifugal pump A split ring seal of a centrifugal pump comprises two rings that consist of a sintered material and that are respectively connected in a frictional or positive manner to a front cover disk of the impeller and to the pump housing which are made of a cast p... | 09/19/1989 |
| 4867640 | Exhaust fan for bathrooms and the like An improved fan of the centrifugal type for bathrooms and the like has a housing with a base wall and four depending side walls. An exhaust outlet fitting in one of the walls has an integral centrifugal fan outlet cutoff. A venturi plate, positioned withi... | 09/19/1989 |
| 4867635 | Variable guide vane arrangement for a compressor The invention relates to variable guide vane arrangements for axial flow compressors of aircraft gas turbine engines. The variable guide vane arrangement comprises a plurality of stator vanes rotatably mounted in a stator structure of the compressor. A co... | 09/19/1989 |
| 4867634 | Turbocharger turbine housing particulate debris trap A turbocharger turbine housing particulate debris trap for collecting all unwanted exhaust gas entrained particles before engagement with the turbine wheel. The trap can be located anywhere in the exhaust system upstream of the turbine wheel and is design... | 09/19/1989 |
| 4867636 | Device for controlling and synchronizing the guide vanes of a distributor of hydraulic machines, particularly of turbines This invention relates to a device for controlling and synchronizing the guide vanes of a distributor of hydraulic machines, particulalry of turbines, which comprises ramps borne by spaced apart radial tabs secured with the synchronization ring. Each leve... | 09/19/1989 |
| 4865520 | Marine propeller with addendum A marine propeller (4) has a plurality of blades (12, 13, 14, and 15) each with an integral addendum (34) extending rearwardly from the trailing edge (30) of the positive pressure surface (26) of the blade. A particular combination of blade area ratio and... | 09/12/1989 |
| 4865519 | Oil submersible pump A multi-stage centrifugal pump mainly used for oil extraction, which incls two essential components, namely, a rotational impeller comprising several blades and a stationary diffuser. The shapes of blades and flow passages are designed by using three-dim... | 09/12/1989 |
| 4863343 | Turbine vane shroud sealing system In an axial flow turbine having a casing disposed about a rotor, a liner also disposed about the rotor and in a radially spaced relationship with the casing, such that the spaced relationship defines an annular opening, and an annular row of stationary bl... | 09/05/1989 |
| 4863354 | Nose cowl for a turbojet engine shaft A nose cowl or spinner is provided for a fixed, non-rotatable central hub of a turbojet engine having assembly means that facilitate the attachment and detachment of the nose cowl to the central hub, and provides a readily visible indication of whether or... | 09/05/1989 |
| 4861229 | Ceramic-matrix composite nozzle assembly for a turbine engine A nozzle assembly for a turbine engine comprises an annular ceramic-matrix composite hub having integral radially outwardly extending vanes, and a pair of annular ceramic-matrix composite shrouds which interlockingly engage and secure the radially outermo... | 08/29/1989 |
| 4859141 | Metallic hollow component with a metallic insert, especially turbine blade with cooling insert A metallic hollow structural part, whose inner geometry is matched to at least one metallic insert supported thereat and pre-profiled to the finished condition, which is secured at the hollow structural part under predetermined heat influence, especially ... | 08/22/1989 |
| 4859145 | Compressor with supercritical diffuser Losses in a diffuser 26 for a radial discharge compressor including an impeller 10 with impeller blades 16 terminating in radially outer discharge ends 18 are minimized by means of first and second stages of diffuser vanes 30 and 32, which vanes 30 and 32... | 08/22/1989 |
| 4859140 | Centrifugal fan A centrifugal fan in which the cone and wheel have a telescoping relationship to vary the rated capacity of the fan. The mechanism effects the relative movement manually, or by a servo arrangement responsive to system pressure. The telescoping relationshi... | 08/22/1989 |
| 4854818 | Shrouded inducer pump An improvement in a pump including a shrouded inducer, the improvement comprising first and second sealing means 32,36 which cooperate with a first vortex cell 38 and a series of secondary vortex cells 40 to remove any tangential velocity components from ... | 08/08/1989 |
| 4850797 | Double chambered turbine housing and seal The invention is in a double chambered turbine housing and seal that includes separate exhaust gas inlet and exhaust chambers and a turbine chamber (11) and (12) combined in a single housing (10), and provides a ball segment (29) that is secured to an exh... | 07/25/1989 |
| 4850802 | Composite compressor wheel for turbochargers A composite compressor wheel for turbochargers and the like comprises a cast shell having aerodynamically contoured centrifugal impeller blades and a hub section defining a generally conical recess into which a hub insert of noncast material resistant to ... | 07/25/1989 |
| 4850795 | Diffuser having ribbed vanes followed by full vanes An improved diffuser is provided for centrifugal compressors and the like. In the improved diffuser, ribbed vanes are aligned with the log spiral core flow within the diffuser and are located radially inwardly of full vanes on a fixed or variable width di... | 07/25/1989 |
