Alexei P Yelistratov

20090269206, Oct 29, 2009

Apr 25, 2008

12/150246

Alexei Yelistratov - Dunlap IL, US
Marion Grant - Princeville IL, US

F01D 5/14
B23K 9/04
B32B 3/10

416229 A, 219 761, 428601

A process for building up a leading edge of a machine component such as a leading edge of a turbine blade for a turbocharger includes forming a molten pool along the edge of the machine component, feeding a filler material in a solid state into the molten pool and melting the filler material via heat transfer between the molten pool and the filler material. A solid layer may be formed along the leading edge by cooling the molten pool. The process is applicable to remanufacturing damaged machine components having a plurality of blades with relatively thin leading edges.

20090293464, Dec 3, 2009

May 30, 2008

12/155199

Gregory J. Kaufmann - Metamora IL, US
Alexei Peter Yelistratov - Dunlap IL, US

F01N 3/022
B23P 15/16

60311, 4232132, 2989662, 55523

An exhaust treatment assembly is provided, which includes a plurality of first grid members. The assembly also includes a plurality of second grid members engaged with the first grid members, the grid members are arranged to form spaces. A plurality of exhaust filter elements is disposed in the spaces and forms an exhaust filter block. A first side wall is engaged with the first grid members, and is adjacent a first edge of the filter block. A second side wall is engaged with the second grid members, and is adjacent a second edge of the filter block. An insulator is located between the first side wall and the first edge of the filter block, and located between the second side wall and the second edge of the filter block.

20090314757, Dec 24, 2009

Jun 18, 2008

12/141691

Alexei P. Yelistratov - Dunlap IL, US

Caterpillar Inc. - Peoria IL

B23K 9/00
B32B 15/00

219137 R, 428615

A method of thick gage welding joins a first work piece to a second work piece. Abutting edges of the pieces are parallel and separated by a gap G. A displacer is inserted between the work pieces with its bottom surface substantially flush with undersides of the work pieces. The displacer width w is from 0.5G to 0.7G and the displacer height h is about 1.5 times the weld penetration depth. Respective root passes are executed with average current along the bottom of the displacer at the edge of the first work piece and the second work piece. Subsequently, respective root passes are executed at full current, or higher than average current, along the top of the displacer at the edge of the first work piece and the second work piece. The remaining space is filled via additional welding pass(es) to create a completed weld.

20090320288, Dec 31, 2009

Jun 30, 2008

12/216124

Alexei P. Yelistratov - Dunlap IL, US
Marion B. Grant - Princeville IL, US

B23P 6/00

298891

A method for facilitating turbine repair is disclosed. The method includes determining wear characteristics of a turbine blade based on at least one of turbine type or turbine application. The method also includes determining a delineated repair area on the turbine blade based on the determined wear characteristics of the turbine blade. The method additionally includes providing a replacement turbine blade part generally matching the size, shape, and material of the turbine blade.

20100089888, Apr 15, 2010

Oct 10, 2008

12/285659

James Anthony Forck - Peoria IL, US
Alexei Peter Yelistratov - Dunlap IL, US
Mark Wayne Hammerton - Peoria IL, US

B23K 9/00
C21D 1/40

219136, 219162

A method for welding an edge of a first member to a side surface of a second member is provided. The first member and the second member are joined to one another at a joint. The method includes beveling an edge of the first member. The method also includes positioning the edge of the first member proximate the side surface of the second member. The method further includes supplying welding material via a welding wire along the edge of the first member to create a joint between the first and second members. Supplying welding material includes controlling a feed rate of the welding wire, such that a weld bead formed at the joint defines a concave cross-section.

20120153713, Jun 21, 2012

Dec 21, 2010

12/974383

Alexei P. Yelistratov - Dunlap IL, US

CATERPILLAR, INC. - Peoria IL

B62D 55/14
B23P 17/00
B62D 55/08

305137, 474166, 29894322

An undercarriage system for a track-type machine includes a ground engaging track, and an idler for the ground engaging track having a hub formed of a relatively lower hardness metallic material, and a compound annular rim capping the hub and being formed of a relatively higher hardness metallic material. The hub includes a radially projecting outer spine, which is annular and concentric with an idler mounting bore defined by an inner peripheral surface of the hub. First and second rim components of the compound annular rim abut one another and sandwich the radially projecting outer spine. Each of the first and second abutting rim components includes a stepped profile. The idler may include a remanufactured idler having a reusable hub and replacement compound annular rim.

20120153714, Jun 21, 2012

Dec 21, 2010

12/974474

Alexei P. Yelistratov - Dunlap IL, US

CATERPILLAR, INC. - Peoria IL

B62D 55/14
B62D 55/08

305137, 474190

A compound rim assembly for a rotatable idler in an undercarriage system of a track-type machine includes a one-piece annular base configured for mounting the compound annular rim assembly upon an outer peripheral surface of an idler hub. The one-piece annular base is formed of a relatively lower hardness metallic material, and the compound rim assembly further includes a first annular track contacting rim a second annular track contacting rim positioned upon the one-piece base and being formed of a relatively higher hardness metallic material. The compound rim assembly further includes a track guiding ring trapped axially between the first and second annular track contacting rims and abutting the outer cylindrical surface of the one-piece annular base, the track guiding ring being formed of a non-metallic material and projecting radially outward of the first and second annular track contacting rims.

20120325779, Dec 27, 2012

Jun 22, 2011

13/166319

Alexei Yelistratov - Dunlap IL, US

CATERPILLAR, INC. - Peoria IL

B23K 9/04

219 7614, 219 761

A hardfacing machine is used for depositing a hardfacing alloy onto a metallic workpiece. An welding unit includes a wire feed system to supply wire to a welding head. A powder alloy feeding system includes a powder feed nozzle fluidly connected to an alloy powder supply. The welding head and powder feed nozzle move in a travel direction relative to the workpiece. The powder feed nozzle is positioned and oriented to feed a powder stream of alloy powder into a molten pool generated on the workpiece by an electrical arc produced by the welding head at a low temperature location behind the welding head relative to the travel direction. This alloy surfacing strategy limits vaporization of alloy elements by avoiding the high temperature region associated with the electrical arc.