Gerald P Piechowski

US Patent:

20040031841, Feb 19, 2004

Filed:

Aug 16, 2002

Appl. No.:

10/064782

Inventors:

Gerald Piechowski - Hortonville WI, US
Mark Christopher - Neenah WI, US

International Classification:

B23K020/14
B23K031/02

US Classification:

228/219000, 228/042000

Abstract:

A shielding gas filter that can be readily incorporated into a gas shielding system for an arc welding apparatus. The gas shielding filter is readily installed to the system upstream of a gas solenoid valve and removes any potentially harmful particles from the supply of the shielding gas to prevent those particles from entering the gas solenoid valve. The shielding gas filter includes a housing having an inlet and an outlet and a specially formed passageway that communicates between the inlet and the outlet. A filter screen is retained within the housing to filter out the particles larger than a predetermined size. Preferably, the filter screen is constructed of stainless steel and filters out particles larger than about 100 microns.

US Patent:

20080035626, Feb 14, 2008

Filed:

Aug 10, 2006

Appl. No.:

11/502865

Inventors:

Mark Richard Christopher - Neenah WI, US
Gerald Peter Piechowski - Hortonville WI, US

International Classification:

B23K 9/12

US Classification:

2191377, 21913731

Abstract:

A welding torch is provided that includes a motorized arrangement for advancing continuous electrode wires during welding. The torch has a pair of rollers that contact the electrode wire to force it through the torch during welding. A force adjustment selector is provided in the torch handle that allows the operator to alter the force or pressure applied to the electrode wire. Markings on the handle, or stops provided between the selector and the handle allow for easy adjustment and verification of the proper pressure or force applied for specific types of electrode wires.