Lawrence M Grycko

7507933, Mar 24, 2009

Nov 23, 2005

11/287010

John Francis Nolan - Cobleskill NY, US
Lawrence Michael Grycko - Lockport IL, US
John Matthew Sassatelli - Valley Falls NY, US

General Electric Company - Schenectady NY

B23K 9/18

219 73, 219 61, 219137 R

A method for fabricating a rotor shaft using a welding process. The method includes positioning a first rotor shaft section adjacent a second rotor shaft section, and using a submerged arc welding process with an included weld preparation angle of between about 0 and about 30 to join the first and second rotor shaft sections together.

8196276, Jun 12, 2012

Dec 30, 2008

12/346208

John Matthew Sassatelli - Valley Falls NY, US
Mark Edward Burnett - Barton NY, US
Engelbert Paauwe - Shorewood IL, US
Aaron Paauwe - Crestwood IL, US
Lawrence Michael Grycko - Lockport IL, US
Jeffrey Paul Cutler - Cohoes NY, US
Carter Steven Cook - Westford NY, US

General Electric Company - Schenectady NY

B21D 53/78

29 2351, 298891

A multi-functional rotary turning and positioning apparatus and method for performing multiple service operations on a turbomachinery rotor while the rotor remains continuously supported with the apparatus. The apparatus includes a platform, a rotary headstock mounted to the platform, a spindle coupled to and rotatably supported by the headstock and adapted for coupling to a turbomachinery rotor, bearing pedestals mounted to the platform and adapted for rotatably supporting the rotor, at least one motor for turning the spindle at least two different rotational speed ranges, equipment mountable to the platform for performing multiple service operations on the rotor, and equipment for controlling the rotational speed and position of the spindle for the purpose of performing the service operation with the operating equipment.

20070164001, Jul 19, 2007

Jan 18, 2006

11/333416

Lawrence Grycko - Lockport IL, US
John Nolan - Cobleskill NY, US
Andrew Tomko - Glenville NY, US

General Electric Company - Schenectady NY

B23K 9/167

219075000

A shielding gas supply tube for delivering shielding gas to a welding arc at the bottom of a narrow groove includes at least one substantially hollow, elongated planar tube having a gas supply end and a gas discharge end; a pair of gas passageways within the tube, isolated from each other, extending between the supply end and the discharge end, and a pair of gas supply fittings at the supply end communicating separately with the pair of gas passageways.

20080011812, Jan 17, 2008

Nov 4, 2005

11/266182

Lawrence Grycko - Lockport IL, US
John Nolan - Cobleskill NY, US
John Sassatelli - Valley Falls NY, US
Mark Burnett - Barton NY, US
Carter Cook - Westford NY, US
David Parker - Richfield Springs NY, US

General Electric Company - Schenectady NY

B23K 31/02

228119000

A stub shaft section adapted to be welded to a re-used end portion of a rotor shaft, the stub shaft section including a hollow cylindrical member having a substantially uniform inner diameter and first chamfered end adapted to form one side of a substantially V-shaped weld groove, and an integral backing ring extending axially beyond the chamfered end, the backing ring having a circumferential recess in a radially outer surface thereof. A related method of replacing a stub shaft on an end of a rotor shaft comprising: (a) providing a new stub shaft with a first chamfered end and an integral backing ring; (b) aligning the first chamfered end with a second chamfered end on the rotor shaft, with the integral backing ring overlapping the second chamfered end, and with the first and second chamfered ends forming a substantially V-shaped weld groove, with the integral backing ring overlapping the second chamfered end; (c) filling the V-shaped groove with weld material; (d) welding the stub shaft to the rotor shaft; and (e) machining the integral backing ring away from the stub shaft.

20130074670, Mar 28, 2013

Sep 26, 2011

13/245294

Brian David Albin - Chicago IL, US
Lawrence Michael Grycko - Lockport IL, US

GENERAL ELECTRIC COMPANY - Schenectady NY

B23D 47/02
B23D 45/00
B23D 47/08

83478, 83651, 83544

An apparatus for machining a weld tab on an article. In one embodiment, the apparatus includes: a base member including at least one rolling element for contacting an underlying surface, the base member having a leading end and a trailing end; a cutting apparatus operably connected to the base member, the cutting apparatus including: a cutting member positioned proximate the leading end of the base member, the cutting member sized to coincide with a size of the weld tab; and a handle member proximate the trailing end and operably connected to the cutting member, the handle member for modifying a position of the cutting member relative to the base member.

59102586, Jun 8, 1999

Mar 25, 1996

8/621392

Benedict Kazirskis - Barto PA
Lawrence M. Grycko - Lockport IL

General Electric Company - Schenectady NY

B23K 912

219 60R

A weld head assembly which, in one embodiment, includes a mounting ring subassembly and a faceplate subassembly is described. The mounting ring subassembly includes a mounting ring configured to be mounted to one of the pipes to be welded. At least one motor is mounted to the mounting ring and the motor includes an output shaft having a rotatable spur gear mounted thereto. A plurality of bevel rollers are mounted, at spaced locations, to the mounting ring and each of the rollers is mounted along a same radial path. The faceplate subassembly is secured to the mounting ring subassembly and includes a faceplate ring, a bevel ring and a spur gear mounted to the faceplate ring. Wire spool holders, wire feeders, a welding torch, and cameras are secured to the rotatable faceplate ring. The bevel ring is located to rotatably interface with the bevel rollers of the mounting ring subassembly and the spur gear is located to mesh with the rotatable spur gear of the mounting ring motor so that the faceplate subassembly rotates with the motor spur gear.

60499796, Apr 18, 2000

Nov 27, 1998

9/200723

John Francis Nolan - Latham NY
Lawrence Michael Grycko - Lockport IL
David Roy Parker - Worcester NY
Gerald Richard Crawmer - Clifton Park NY

General Electric Co. - Schenectady NY

B23P 1500

298891

The welding method for repairing a turbine rotor dovetail includes removal of buckets from damaged dovetails, removing a damaged dovetail from a turbine wheel, leaving a rotor wheel body having a rim. A plurality of ring sections are disposed about the wheel body rim, leaving axially opening annular grooves along opposite sides of the wheel. Welding apparatus including an electrode, welding wire and gas-carrying tube are inserted into the groove through an axial face of the wheel. One or more cover plates are disposed to overlie the groove at the location of its opening through the axial face of the wheel to at least partially seal the groove at its opening and maintain welding gas in the groove, enveloping the electrode and weld wire.

56700725, Sep 23, 1997

Apr 22, 1994

8/231614

Henry Peter Offer - Los Gatos CA
Lawrence Michael Grycko - Lockport IL

General Electric Company - San Jose CA

B23K 9167

219137R

A welding process and an apparatus used therein for providing a significant improvement in the detrimental tensile residual stress condition on the root side of welds, especially on the inside wall of piping welds. The method combines an extremely thin weld joint design with a non-circular cylindrical, thin welding electrode having an elongated cross-sectional shape. During welding, the elongated dimension is aligned parallel with the length of the weld joint. This combination enables joining of piping and other residual stress-sensitive components with both the initial weld joint preparation and the completed weld having a uniquely thin width and with a high aspect ratio of depth to width. Use of this high-aspect-ratio weld joint process substantially mitigates welding-induced residual stresses, without the normally required internal water cooling. The process is considered to be effective in mitigating residual stresses and the associated welding strains (distortion) in joints having any path shape, whether welded from one or more sides of the material.