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Class Information
Number: 415/174.5
Name: Rotary kinetic fluid motors or pumps > Bearing, seal, or liner between runner portion and static part > Labyrinth seal
Description: Device wherein the means prevents or retards the flow of fluid between the runner* and the fixed element. The means comprises maze like or zigzag interconnecting passages formed by the opposing runner part and fixed element surfaces, through which passages the fluid must flow to pass between the runner and the fixed element.


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7625177 Simple axial retention feature for abradable members Dec. 1, 2009
7597538 Thermostructural turbomachine part that is circularly symmetrical about a longitudinal axis, the part including an annular wiper, and a method of manufacture Oct. 6, 2009
7581920 Method for air circulation in a turbomachine compressor, compressor arrangement using this method, compression stage and compressor incorporating such a arrangement, and aircraft engine equipp Sep. 1, 2009
7581923 Gas turbine engine with purge air pump and guide Sep. 1, 2009
7578653 Ovate band turbine stage Aug. 25, 2009
7572099 Seal for turbine engine Aug. 11, 2009
7556474 Turbomachine, for example a turbojet for an airplane Jul. 7, 2009
7549835 Leakage flow control and seal wear minimization system for a turbine engine Jun. 23, 2009
7540709 Box rim cavity for a gas turbine engine Jun. 2, 2009
7540708 Methods and apparatus to facilitate sealing in a turbine Jun. 2, 2009
7527476 Rotor assembly and annulus filler for gas turbine engine compressor May. 5, 2009
7500824 Angel wing abradable seal and sealing method Mar. 10, 2009
7470113 Split knife edge seals Dec. 30, 2008
7430802 Labyrinth seal in a stationary gas turbine Oct. 7, 2008
7425114 Shaft seal for a transmission expander or compressor, and transmission expander or compressor having a shaft seal Sep. 16, 2008
7384235 Variable clearance positive pressure packing ring and carrier arrangement with leaf springs Jun. 10, 2008
7364402 Turbine module for a gas turbine engine Apr. 29, 2008
7363762 Gas turbine engines seal assembly and methods of assembling the same Apr. 29, 2008
7344357 Methods and apparatus for assembling a rotary machine Mar. 18, 2008
7338255 Turbo-type fluid machine and a stepped seal apparatus to be used therein Mar. 4, 2008
7287956 Removable abradable seal carriers for sealing between rotary and stationary turbine components Oct. 30, 2007
7264442 Seal structure Sep. 4, 2007
7252474 Sealing arrangement in a compressor Aug. 7, 2007
7241109 Seal system Jul. 10, 2007
7234918 Gap control system for turbine engines Jun. 26, 2007
7186074 Axial flow stream turbines Mar. 6, 2007
7175388 Integrated labyrinth and carbon seal Feb. 13, 2007
7121791 Main gas duct internal seal of a high-pressure turbine Oct. 17, 2006
7097423 Endface gap sealing for steam turbine diaphragm interstage packing seals and methods of retrofitting Aug. 29, 2006
7082962 Seal support system for maintaining barrier fluid pressure within a mechanical seal Aug. 1, 2006
7059821 Method and apparatus to facilitate sealing within turbines Jun. 13, 2006
7056088 Steam turbine rotor temperature control at oil deflector Jun. 6, 2006
7052017 Rotary machine with seal May. 30, 2006
7048496 Turbine cooling, purge, and sealing system May. 23, 2006
7048497 Gas turbine stator May. 23, 2006
7044710 Gas turbine arrangement May. 16, 2006
7040861 Method and apparatus for reducing self sealing flow in combined-cycle steam turbines May. 9, 2006
6994519 Apparatus and methods for coupling axially aligned turbine rotors Feb. 7, 2006
6923005 System to feed cooling air into a gas turbine rotor Aug. 2, 2005
6916151 Ventilation device for a high pressure turbine rotor of a turbomachine Jul. 12, 2005
6899520 Methods and apparatus to reduce seal rubbing within gas turbine engines May. 31, 2005
6884023 Integral swirl knife edge injection assembly Apr. 26, 2005
6857847 Simplified support device for nozzles of a gas turbine stage Feb. 22, 2005
6854958 Hydraulic turbine with enhanced dissolved oxygen Feb. 15, 2005
6854957 Seal of a vertical pump Feb. 15, 2005
6837676 Gas turbine Jan. 4, 2005
6821086 Turbomachine seal assembly and method therefor Nov. 23, 2004
6779970 Balancing piston for centrifugal compressors with a seal with small cells which have divergent play Aug. 24, 2004
6779972 Flowpath sealing and streamlining configuration for a turbine Aug. 24, 2004
6776573 Bladed rotor disc side-plate and corresponding arrangement Aug. 17, 2004

1 2 3 4 5


 
 
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