| Patent Number |
Title Of Patent |
Date Issued |
| 6398622 |
Polishing mechanism for vehicle bumper |
June 4, 2002 |
| A polishing mechanism for treating a vehicle bumper incorporating with a multi-shaft robot is disclosed. A polishing wheel is rotationally attached to an end of the robot. A rotational positioning device is provided for positioning the bumper in a position within a working range of the r |
| 5698867 |
Turn-off, MOS-controlled, power semiconductor component |
December 16, 1997 |
| In a MOS-controlled turn-off thyristor (MCT), a conventional integral cell with a combined emitter and short-circuiting function is replaced by a separate DMOS cell (D) and emitter cell (E). The DMOS cell (D) contains a five-layer sequence of cathode short-circuit region (18), first chan |
| 5625203 |
Controlled turn-off power semiconductor device |
April 29, 1997 |
| A controlled turn-off power semiconductor device is proposed which is subdivided into unit cells and which comprises five layers in a p-n-p-n-p sequence, namely a p-type emitter layer (9), an n-type base layer (8), a p-type base layer (7), an n-type emitter layer (6) and a p-doped contac |
| 5540969 |
Insulating tape and method of producing it |
July 30, 1996 |
| To improve the thermal conductivity of the main insulation of an electrical machine, an insulating tape is proposed which is composed of one or more glass-fabric layers (6) and mica layers (5). Only essentially the interspaces of the glass fabric (6) which is made up of glass threads (7) |
| 5536079 |
Cabinet |
July 16, 1996 |
| A cabinet includes a supporting metallic framework having a rectangular shape. At the corners of the cabinet are sheet-metal framework posts connected to a roof panel and a floor panel. The roof panel and the floor panel are formed from identical parts. Casing parts are fitted to the |
| 5493247 |
Gate circuit for hard driven GTO |
February 20, 1996 |
| In a circuit for hard driving a GTO, the conductor inductance (L1) and the internal inductance of the GTO (L2) form, together with a first capacitor (C1) situated in parallel via a switch (S), a series resonance circuit inside the gate circuit. In this connection, the chosen sizes of the |
| 5490388 |
Gas turbine combustion chamber having a diffuser |
February 13, 1996 |
| In a gas turbine combustion chamber in which for cooling purposes use is made of combinations of convective heat transfer mechanisms whose basic principle is the elimination of heat by flow, the transition from the convective cooling channel (4) to the plenum upstream of the burners (5) |
| 5482457 |
Gas-operated premixing burner |
January 9, 1996 |
| In a gas-operated premixing burner for the combustion chamber of a gas turbine, the fuel injected within a premixing space (21) by means of a plurality of nozzles (17) is intensively mixed with the combustion air prior to ignition. The nozzles are arranged around a burner axis (10). In |
| 5468916 |
Means for fixing winding overhangs in electrical machines |
November 21, 1995 |
| To fix the conductors and coils of wind overhangs and to fill cavities in the winding overhangs of electrical machines, strings are used which include compressible rovings (1) made up of fibers and surrounded by an elastic sheath (2) which is permeable to impregnating resin. A spacing is |
| 5465577 |
Gas turbine combustion chamber |
November 14, 1995 |
| In a gas turbine combustion chamber, which consists of an inlet zone (1) with injection, an ignition delay zone (2), a reaction zone (3), a burn-out zone (4) and a transition zone (5) to the turbine, the reaction zone (3) has a cross-section which increases in such a way that the gas |
| 5431752 |
Friction welding of .gamma. titanium aluminide to steel body with nickel alloy connecting piece |
July 11, 1995 |
| The component comprises a body (5) composed of an alloy based on a .gamma.-titanium aluminide, a steel body (2) and a connecting piece (4) composed of a nickel-base alloy. The .gamma.-titanium aluminide body (5) and the steel body (2) are rigidly joined together by means of the conne |
| 5427419 |
Pipe system |
June 27, 1995 |
| This pipe system has a pressurized feed conduit and an outflow conduit for a hydraulic fluid. It furthermore has parts (6, 8, 10) for connection to a hydraulically actuable device.The intention is to create a pipe system which is improved as regards safety of operation and fire protectio |
| 5421190 |
Device for measuring gas density |
June 6, 1995 |
| The device serves to measure the density of a gas, in particular of the insulating gas of a gas-insulated electrical installation. It contains two resonators (11, 12) each comprising a piezoelectric crystal (14, 15) and each comprising two electrodes applied to the crystal. A first (11) |
| 5416398 |
Method and device for operating a synchronous machine |
May 16, 1995 |
| A synchronous machine (22) can be run up with increasing frequency by a controllable frequency converter (21) with an opened switch (S1) and a closed switch (S2), the exciter direct current for its exciter winding (22E) being supplied by a starting converter (23). When the synchronous |
| 5413478 |
Burner with an electric ignition device |
May 9, 1995 |
| A burner with an electric ignition device, for use in an internal combustion engine, a combustion chamber of a gas turbine set, or for a furnace installation, includes two hollow part-conical bodies that are positioned to form a conical combustion space and are offset so that longitu |
| 5409891 |
Method for producing a rotationally symmetrical molded part of a high-temperature superconductor |
April 25, 1995 |
| A rotationally symmetrical molded part of a high-temperature superconductor achieves a critical current density of j.sub.c .gtoreq.800 A/cm.sup.2 at a temperature of 77K, by using a powder mixture (8) having the stoichiometric composition of Bi.sub.2+x EA.sub.3 Cu.sub.2 O.sub.y, where |
| 5409781 |
High-temperature component, especially a turbine blade, and process for producing this component |
April 25, 1995 |
| A turbine blade including a blade and blade foot. The blade foot is formed by a ductile material and the blade comprises a material which is brittle compared to the ductile material but resistant to high temperature. The two materials are alloys of the same base compositions but differ a |
| 5403149 |
Stabailization device for extending the characteristic map of a compressor |
April 4, 1995 |
| In a compressor, the stabilization device for extending the characteristic map consists of a co-rotating ring (2) rigidly connected to the runner blades (1), there being arranged between the ring (2) and the housing (3) of the compressor a recirculation duct (4) which has an opening to t |
| 5400587 |
Gas turbine annular combustion chamber having radially displaced groups of oppositely swirling b |
March 28, 1995 |
| In a gas turbine combustion chamber which surrounds the rotor as an annulus and therefore has the shape of an annular combustion chamber, the front wall (10) is equipped with a number of burners whose ends occupy a uniform plane. These burners form a double ring (10b, 10c) on the front w |
| 5397216 |
Flow divider for radial-axial inlet housings |
March 14, 1995 |
| In a radial-axial inlet housing of rotating thermal machines, a flow divider is disposed in the turbine or compressor inlet, in front of the inlet and opposite the first turbine guide vane row or the compressor ribs. The flow divider in this case is disposed in the central lower stag |
| 5395699 |
Component, in particular turbine blade which can be exposed to high temperatures, and method of |
March 7, 1995 |
| A turbine blade including a blade foot and a blade. The blade foot is formed by a ductile material and the blade comprises a material which is brittle compared to the ductile material but resistant to high temperature. The two materials are alloys of different chemical compositions a |
| 5388412 |
Gas turbine combustion chamber with impingement cooling tubes |
February 14, 1995 |
| In a gas turbine combustion chamber (1) cooled by means of impingement cooling, the height of the cooling duct (5) formed by the perforated plate (3) and the impingement surface (4) increases continuously in the transverse flow direction to correspond with the supply of cooling air. |
| 5388397 |
Method for operating a turbocompressor |
February 14, 1995 |
| The invention relates to a method for operating a turbocompressor (12) having at least two compressor stages and a cooler (14) to which water is applied as coolant, the heated cooling water having a pressure exceeding the saturation pressure, with the result that said cooling water is |
| 5388030 |
Metal module housing having a plurality of lugs formed therein for supporting and grounding a pr |
February 7, 1995 |
| The input and/or output device for process data has a mounting rack (1), as well as a plurality of modules (2) fastened on the mounting rack (1). A process connector (4) can be inserted into each of the modules (2) on the front side in each case. Each module (2) has a circuit board (17) |
| 5387082 |
Guide wave suspension for an axial-flow turbomachine |
February 7, 1995 |
| In a gas turbine having a plurality of vane carrier segments (2, 2') suspended coaxially in a machine casing (3) the guide vanes (11, 11') are held by their roots (14, 14') in such a manner that the root (14) of each guide vane engages in each case in two vane carrier segments (2, 2') |
| 5386687 |
Method of operating a gas turbine group |
February 7, 1995 |
| In a method for operating a gas turbine group (32) having an integrated steam process (33) and having an air storage installation (34), a partial mass flow (17) is extracted from a high-pressure turbine (15) of the gas turbine group (32) and passed through a heat exchanger (20) for cooli |
| 5386685 |
Method and apparatus for a combined cycle power plant |
February 7, 1995 |
| A method and apparatus for a combined turbine installation includes a gas turbine group with a compressor having a water cooler, a combustion chamber and a gas turbine, and having a steam turbine installation with a waste heat boiler heated by the exhaust gas from the gas turbine. The |
| 5382906 |
Method for determining an actual tripping characteristic of a relay |
January 17, 1995 |
| The present invention is directed to a method for determining actual tripping characteristics with the aid of a test apparatus in which test parameters are input with the aid of an input unit. The aim is to specify an appropriate method which works particularly quickly and precisely. Thi |
| 5381653 |
Aircraft engine with pressure exchanger |
January 17, 1995 |
| In an aircraft engine with a fan or propeller drive, in which at least two shafts (1, 2) disposed to rotate coaxially and independently of one another respectively support a separate compressor (3, 4) and a separate turbine (5, 6), wherein a suitable device for combusting the gases is |
| 5376911 |
Choke coil |
December 27, 1994 |
| A choke coil comprises mutually similar flat bars which are electrically connected at the corners. Each coil winding comprises an integral number of mutually similar flat bars which in each case lie on top of one another on contact areas at the corners so as to overlap over a large area. |
| 5375974 |
Stabilizing device for extending the characteristic diagram of a compressor |
December 27, 1994 |
| In a stabilizing device for extending the characteristic diagram of a compressor, which consists of a ring permanently attached to the impeller vanes of the impeller and a recess in the casing of the compressor in the form of a rotationally symmetrical groove, the ring is limited to the |
| 5373695 |
Gas turbine combustion chamber with scavenged Helmholtz resonators |
December 20, 1994 |
| In a gas turbine combustion chamber having an annular combustion space, the combustion chamber inlet is equipped with a plurality of burners, which are uniformly distributed in the peripheral direction and are fastened to a front plate. Scavenged Helmholtz resonators (21) consisting of s |
| 5366345 |
Turbine blade of a basic titanium alloy and method of manufacturing it |
November 22, 1994 |
| A turbine blade, preferably used in the low pressure stages of a steam turbine, is formed from a basic titanium alloy. Near the blade tip, it has a region, including the blade leading edge with a surface of a material which is more resistant to erosion than the basic titanium alloy.This |
| 5363642 |
Method of operating a gas turbine group |
November 15, 1994 |
| In a method of operating a gas turbine group (34) with or without integrated steam process (20) and with or without an air reservoir installation (20), a series connection with one and the same air mass flow (16, 17) is used for cooling one or more structures (15, 18, 19) which are i |
| 5362204 |
Gas turbine with flanged-on exhaust gas casing |
November 8, 1994 |
| In a gas turbine having a blade carrier (2) which is suspended coaxially in a turbine casing (3), both the turbine casing and the blade carrier are provided with a horizontal junction plane. An exhaust gas casing (5), whose bounding walls consist essentially of an annular inner part on t |
| 5361576 |
Method for operating a combustion chamber of a gas turbine |
November 8, 1994 |
| In a method for operating a silo combustion chamber (A) of a gas turbine, this combustion chamber is equipped with a number of premixing burners (B), these burners being arranged so that they are subdivided in groups within the combustion chamber (A). At least one group is equipped with |
| 5359533 |
Method for determining a frequency/time profile of hits, and device for carrying out the method |
October 25, 1994 |
| In a method for determining a frequency/time profile of hit sequences and the corresponding device, a measuring window is opened after an external starting signal has been locked. As long as the measuring window is open, the clock periods are counted. If a hit occurs, it is marked with t |
| 5353589 |
Gas turbine plant having a water or steam cooled energy exchanger |
October 11, 1994 |
| The use of a pressure wave machine as energy exchanger (C) in a gas turbine plant makes it possible, owing to the self-cooling cellular wheel (22), to employ substantially higher temperatures. However, in order to be able to make full use of this advantage, steam cooling (13) is applied |
| 5351267 |
Process for electrode control of a DC arc furnace, and an electrode control device |
September 27, 1994 |
| Direct current arc furnaces (8) have a current regulator (14) for maintaining the current of an arc (10) constant, and an electrode control (18) for affecting the position of an electrode (7) of the arc furnace (8) and thus the length of an arc (10). Control of the position of the el |
| 5349213 |
Turn-off power semiconductor device |
September 20, 1994 |
| To avoid peripheral current-density overshoots in a turn-off power semiconductor device, in particular an MOS-controlled thyristor MCT having a multiplicity of separate MCT cells ((M1, . . . , M3), the unit cells (here: MCT cells (M1, . . . , M3)) are combined in groups to form segments |
| 5346365 |
Gas turbine with exhaust gas casing and exhaust gas duct |
September 13, 1994 |
| In a gas turbine, the exhaust gas casing (5) consists of a ring-shaped hub-end inner part (6) and a ring-shaped outer part (7), which parts bound a diffuser (9) and are provided with a horizontal split plane. The exhaust gas casing merges into an exhaust gas duct, whose boundary walls li |
| 5343036 |
Optical measurement of electrical quantities using inverse piezoelectric effect with dual double |
August 30, 1994 |
| In a fiber-optic sensor for measuring electric fields and voltages, in place of a double-mode fiber extending between sensor head (15) and evaluating unit (14) two separate, similar double-mode fibers (5a, 5b) are connected in series in the manner of a tandem interferometer. The first |
| 5342577 |
High temperature alloy for machine components based on doped tial |
August 30, 1994 |
| The high temperature alloy is intended for machine components subjected to high mechanical and thermal stress. It is essentially based on doped TiAl and has the following composition: |
| 5342170 |
Axial-flow turbine |
August 30, 1994 |
| An axial-flow turbine has at least one row of bowed guide vanes (7) and at least one row of rotor blades. The bowing of the guide vanes (7) over the vane height is selected at right angles to the chord and is directed towards the pressure side of the respectively adjacent guide vane in t |
| 5342169 |
Axial flow turbine |
August 30, 1994 |
| In an axial flow turbine with a row of individually adjustable guide vanes (8) and a row of rotor blades (5), the guide vanes can be rotated by an adjusting shaft (9) supported in a casing (4) and passing through a vane carrier (3). The tips of the rotor blades seal against a cover (7). |
| 5341283 |
Protective circuit with feedback capability for two-point and three-point inverters, and method |
August 23, 1994 |
| In a two-point or three-point inverter, a feedback circuitry is provided, which is disposed in parallel with a feedback capacitor (CR), and essentially include a semiconductor valve (SR) and a transformer (TR). As a result of switching the semiconductor valve (SR) once, the energy of the |
| 5340306 |
Device for mixing two gaseous components and burner in which this device is employed |
August 23, 1994 |
| A device for mixing two gaseous components, particularly in the context of a burner in which it is desired to mix the two gaseous components prior to combustion. The device includes a tangential inlet flow duct which opens into an inlet flow gap. A first gaseous component flows in throug |
| 5339026 |
Fiber-optic sensor with first and second bimode fibers |
August 16, 1994 |
| In a fiber optic sensor for measuring electric fields and voltages, in place of a bimode fiber extending between sensor head (14) and evaluation unit (13) two separate bimode fibers (4a, 4b) of the same type are connected in series in the manner of a tandem interferometer. The first |
| 5338155 |
Multi-zone diffuser for turbomachine |
August 16, 1994 |
| A multi-zone diffuser for an axial-flow turbomachine has a minimal overall length and a first zone with a minimal diameter. The kink angles of the diffuser inlet both at the hub and at the cylinder of the turbomachine are fixed exclusively for evening out the total pressure profile over |
| 5337554 |
Method for reducing the pressure of a gas from a primary network |
August 16, 1994 |
| In a method for reducing the pressure of a gas (12) from a primary network, this gas (12) is first fed through a heat exchanger (9) whose temperature potential comes from the exhaust gases (8) of a gas turbine (2), this gas turbine (2) being a constituent part of a gas turbine group (1, |
