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U.S. Headquarters

901 N. Fourth Street
Jeannette, PA 15644
Tel: 724-527-2811

Japan Headquarters

20-1 Nakasode
Sodegaura-Shi
Chiba-Ken, 299-0296
Tel: 81-4-3860-6111

Elliott Patents

100 Years of Engineering Research & Development

Elliott Group is proud of its hundred-year history of excellence in the field of turbomachinery and believes that the investment in research and development promotes the development of superior products. Elliott's patents reflect the significant investment spent on research and engineering each year.

In accordance with Section 287 of the revised Title 35 of the United States Code, the reader is hereby notified of Elliott Group's rights in the United States patents listed on this site and associated with the following products.

Compressors

Method for preventing one-cell stall in bladed discs

 

5,832,606

Casing design for rotating machinery and method for manufacture thereof

 

6,506,018

Method for forming a fluid seal between rotating and stationary members

 

6,663,739

 

Welding method, filler metal composition and article made therefrom 

 

6,712,912

 

Permanent magnet rotor and magnet cradle 

 

6,933,645

Method of brazing and article made therefrom 

 

6,935,555

Impeller lock assembly and method 

 

7,018,177

Method of brazing and article made therefrom 

 

7,407,715

Bearing assembly and centering support structure therefor

 

7,625,121

 

Impeller

 

7,628,586

Four-bearing rotor system 

 

7,726,883

Positioning device for the fabrication of compressor impellers 

 

8,056,889

 

Boltless multi-part diaphragm for use with a centrifugal compressor 

 

8,157,517

 

Method of positioning a bearing assembly and centering support structure therefor

 

8,726,503

Turbomachinery stationary vane arrangement for disk and blade excitation reduction and phase cancellation

 

9,581,034

 

Internal cooling bearing pads

 

9.874,247

 

Method of welding

 

5,945,013

Self-leveling thrust bearing retainer

 

9,771,972 

Extended sculpted twisted return channel vane arrangement

10,760,587

Bearing assembly and centering support structure therefor 

 

7,625,121

Seating and locking system for turbomachinery

8,262,052

Turbines

Method of welding

 

5,945,013

 

Method for forming a fluid seal between rotating and stationary members

 

6,663,739

Individually replaceable and reversible insertable steam turbine nozzle 

 

6,416,277

 

High-stability valve arrangement for a governor valve 

 

7,108,244

Bearing assembly and centering support structure therefor 

 

7,625,121

Tilted cone diffuser for use with an exhaust system of a turbine 

 

7,731,475

 

Passive dynamic inertial rotor balance system for turbomachinery

 

8,984,940

Valve exerciser for an emergency shutoff valve of a steam turbine and method for using the same 

 

9,057,450

 

Method of positioning a bearing assembly and centering support structure therefor

 

8,726,503

Brush ring seal

 

9,347,333

Deposited core cast diafram process

 

9,180,514

Hot gas expander inlet casing assembly and method

 

9,863,321 

 

Internal cooling bearing pads

9,874,247

Dual type multiple stage, hydraulic turbine power generator including reaction type turbine with adjustable blades

6,441,508

Hot gas expander inlet casing assembly and method

6,141,871

Multistage liquefied gas expander with variable geometry hydraulic stages

8,497,616

Self-leveling thrust bearing retainer

 

9,771,972

Seating and locking system for turbomachinery

8,262,052

Cryogenic Pumps and Expanders

Cryogenic liquid rotary machine

9.461,520

Cryogenic submerged turbine generator with hydrostatic bearings

8,253,292

Counter rotation inducer housing

8,506,236

Inducer for centrifugal pump

9,631,622

8,550,771

Liquefaction process producing subcooled LNG

8,991,208

9,879,904

Multistage liquefied gas expander with variable geometry hydraulic stages

8,497,616

Dual type multiple stage, hydraulic turbine power generator including reaction type turbine with adjustable blades

6,441,508

Support device for high pressure pumps usable in or on the deck of a marine vessel

8,162,596

Methods and apparatus for centrifugal pumps utilizing head curve

8,240,976

Seating and locking system for turbomachinery

8,262,052

Thrust balancing device for cryogenic fluid machinery

8,513,847

Liquefied gas expander nozzle ring having adjustable guide vanes

8,653,687

Power recovery system using a rankine power cycle incorporating a two-phase liquid-vapor expander with electric generator

8,664,785

8,823,189

8,963,354

9,341,085

Liquefied gas expander and integrated Joule-Thomson valve

8,683,824

Method of gas expansion using liquefied gas expander and integrated Joule-Thomson valve

9,335,092

Thrust equalizing mechanism for cryogenic turbine generator

9,341,191

Thrust balancing device for cryogenic fluid pump

9,461,519

Three-way integrated Joule-Thomson valve and liquefied gas expander

9,593,882

Other Patents

Aerodynamic insert for high-speed permanent magnet motor

 

7,466,054

Method of balancing an embedded permanent magnet motor rotor 

 

7,626,309

Method for assembling rotor of permanent magnet motor

 

7,661,185

 

 

Apparatus for assembling rotor of permanent magnet motor 

 

7,854,059

 

Method of compressing lamination stacks for permanent magnet rotor

 

7,358,637