Frank G Arcella

6396025, May 28, 2002

Aug 4, 1999

09/366792

Clarence L. Pyritz - Waconia MN
Frank G. Arcella - Eden Prairie MN
Michael A. House - Chaska MN

Aeromet Corporation - Eden Prairie MN

B23K 2600

21912163, 21912184, 21912165, 21912147

A powder feed nozzle for laser welding applications including a multiple outlet nozzle tip for focusing a discharged powder stream. The multiple outlet nozzle tip disperses multiple outlet streams and includes a powder discharge outlet and at least one focus gas discharge outlet, radially spaced from the powder discharge outlet, for dispersing a powder stream and a gas stream. Powder flows from a powder source through a powder channel to discharge a powder stream. Focus gas flows through a focus gas channel angled relative to the powder channel to discharge a focus gas stream.

6605795, Aug 12, 2003

Nov 6, 2000

09/707186

Frank G. Arcella - Eden Prairie MN
Bradley A. Cleveland - Plymouth MN
Mark S. Fullen - St. Paul MN

MTS Systems Corporation - Eden Prairie MN

B23K 2600

21912163, 21912165

An imaging system for controlling powder aiming in a molten puddle. In the imaging system of the present invention, an image processor extracts a first image of the molten puddle and a second image of a powder envelope from a composite image of the weld area. The first and second processed images provide feedback for process control.

6696664, Feb 24, 2004

Apr 1, 2002

10/113861

Clarence L. Pyritz - Waconia MN
Frank G. Arcella - Eden Prairie MN
Michael A. House - Chaska MN

MTS Systems Corporation - Eden Prairie MN

B23K 2600

21912164, 21912166, 21912184, 21912185

A powder feed nozzle for laser welding applications including a multiple outlet nozzle tip for focusing a discharged powder stream. The multiple outlet nozzle tip disperses multiple outlet streams and includes a powder discharge outlet and at least one focus gas discharge outlet, radially spaced from the powder discharge outlet, for dispersing a powder stream and a gas stream. Powder flows from a powder source through a powder channel to discharge a powder stream. Focus gas flows through a focus gas channel angled relative to the powder channel to discharge a focus gas stream.

6881919, Apr 19, 2005

Dec 26, 2003

10/746727

Clarence L. Pyritz - Waconia MN, US
Frank G. Arcella - Eden Prairie MN, US
Michael A. House - Chaska MN, US

Aeromet Corporation - Eden Prairie MN

B23K001/16
B23K011/30

219 761, 219 7612, 219 64

A powder feed nozzle for laser welding applications including a multiple outlet nozzle tip for focusing a discharged powder stream. The multiple outlet nozzle tip disperses multiple outlet streams and includes a powder discharge outlet and at least one focus gas discharge outlet, radially spaced from the powder discharge outlet, for dispersing a powder stream and a gas stream. Powder flows from a powder source through a powder channel to discharge a powder stream. Focus gas flows through a focus gas channel angled relative to the powder channel to discharge a focus gas stream.

20020020164, Feb 21, 2002

Jul 26, 2001

09/915758

Bradley Cleveland - Plymouth MN, US
Frank Arcella - Eden Prairie MN, US
Michael Skinner - Eden Prairie MN, US

B23P011/00
B23B011/00
B23P017/00

060/039010, 029/505000, 029/527200, 029/412000, 029/03400R, 029/03300T

A metal article of manufacture including a tubular body portion and free-formed metal features on the tubular body portion. The free-formed metal features are formed of a layerwise deposition of a molten metal material in a predefined pattern to form the desired free-formed feature or construction.

41403371, Feb 20, 1979

Mar 24, 1977

5/780776

Frank G. Arcella - Bethel Park PA
Albert F. Berringer - Apollo PA
John S. Billings - Trafford PA

Electric Power Research Institute, Inc. - Palo Alto CA

F16L 3500

285 3

In making a quick connection and hermetic seal for coupling low pressure systems of a type such as heat pipes and the like, a pre-installed fitting forming the sealing portion of a quick connection assembly is disposed in a depression formed in the sidewall of the low pressure chamber so that the chamber and the sealing portion of the connecting assembly can be fully processed together. The open end of a second system is coupled into the inserted sealing fitting by means of threads formed about a pipe plug device and carried by the tubular end portion of the second system. Sealant applied between the threads of the plug and fitting so that as the plug advances along the fitting a gas-tight seal will be obtained. The fitting includes a sealing membrane disposed across the inserted end thereof to be upset by advancing movement of the tubular end portion carried by the plug.

41502485, Apr 17, 1979

Mar 9, 1978

5/884885

Maurice G. Fey - Plum Borough PA
Frank G. Arcella - Bethel Park PA

Westinghouse Electric Corp. - Pittsburgh PA

H05B 700

13 2P

An arc heater system for producing high purity silicon characterized by the use of an arc heater into which a silicon halide is injected together with a liquid metal reductant, such as an alkali metal, which are reacted together by projecting them into a reaction chamber to cause the formation of liquid silicon, and the walls containing the system being provided with cooling jacket means for preliminarily heating the reactants.

40335046, Jul 5, 1977

Oct 24, 1975

5/625733

James C. Administrator of the National Aeronautics and Space Fletcher
Frank G. Arcella - Pittsburgh PA
Gerald G. Lessmann - Pittsburgh PA
Russell A. Lindberg - Westlake OH

B23K 1500
B23K 1900

228190

The formation of voids through interdiffusion in bimetallic welded structures exposed to high operating temperatures is inhibited by utilizing an alloy of the parent materials in the junction of the parent materials or by preannealing the junction at an ultrahigh temperature. These methods are also used to reduce the concentration gradient of a hardening agent.