Abstract: There is provided a portable welding system that includes a power supply unit and a wire feeder unit. The power supply unit includes power supply electronics and a power supply housing sized and configured to house the power supply electronics. The power supply housing includes a base face and an opposing upper support face. The wire feeder unit is detachably engaged with the power supply unit. The wire feeder unit includes a welding gun hose connection port sized and configured for connection to a welding gun hose. The wire feeder unit further includes a wire spool and a wire feeder housing. The wire spool is attached to the wire feeder housing. The wire feeder housing has a bottom face and an opposing top face, and the wire feeder unit is detachably engaged with the power supply unit with the upper support face disposed adjacent the bottom face.

Abstract: A teeth whiting device including a main housing having a main housing opening disposed about an axis offset from a vertical axis. The teeth whitening device further includes an extension arm having a first arm end portion and an opposed second arm end. The extension arm is coupled to the main housing adjacent the first arm end portion and extends through the main housing opening. A light emitting unit is coupled to the second arm end portion and is adapted to emit light within a prescribed wavelength range toward teeth of a user for whitening the teeth. The extension arm is flexible and capable of assuming a prescribed configuration to enable selective positioning of the light emitting unit relative to the main housing.