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Battery Powered Spool Gun

IP.com Disclosure Number: IPCOM000242301D
Publication Date: 2015-Jul-06
Document File: 2 page(s) / 25K

Publishing Venue

The IP.com Prior Art Database


This invention creates a spool gun that can easily attach toThis invention creates a spool gun that can easily attach to a variety of equipment and require fewer cords.

This text was extracted from a Microsoft Word document.
This is the abbreviated version, containing approximately 54% of the total text.
  1. Title of the invention:

Battery Powered Spool Gun

  1. Inventor(s):

Ed Enyedy

David Mayer


  1. Summary of what has been done before:

Spool guns are convenient to use because of their small size, but connecting them to a welder can be difficult.  Various welders may output different voltages for operating the motor.  One may have 42 VAC, another 115 VAC, and another 40 VDC and still a basic machine may not even have power for a spool gun. 

Furthermore, having a cable for the spool gun adds weight, creates a tripping hazard and is at risk of getting broken or cut.  A 100 foot cable defeats the purpose of having a small, lightweight gun, because the cable may weigh more than the spool gun itself.

  1. Summary of the invention:

The invention is to create a spool gun where the wire drive motor and controls are powered by a battery instead of the welding power supply.  Preferably, the battery is easily removable and rechargeable, similar to designs common in cordless drills.

The spool gun would include a means to vary the speed of the motor similar to today’s spool guns.  This can be done with a rheostat or electronic controls.

A variation is to include a method for triggering the welding output of the power source.  Ideally, this would be done through wireless communications, also powered by the same battery that runs the motor.  The wireless controls could also communicate a weld output setting.

Alternatively, the trigger of the spool gun could engage a switch to open and close the electrode output.   The switch could be mechanically coupled to the trigger and be in the form of a c...