Abstract: A cart frame having a bottom frame member, a top frame member, support struts connecting the bottom frame member and the top frame member, and caster wheels attached to the bottom frame member. The top frame member has a higher positioned opened front side and a lower positioned back supported rear side. The open front side may be inserted under upright collapsible tables with the table tilted up easily by a single person so that they will slide back and are then supported against the rear side's support back.

Abstract: A welder's mask with breath-activated eye shield which includes a conventional welder's mask housing with hardware for mounting upon a welder's head. A viewing opening exists in the mask housing which receives a welder's eye shield into an eye shield framework. A power source and motor are mounted to the mask housing. A linkage is attached between the shaft of the motor and the eye shield. The motor operates to turn the shaft in either rotational direction causing the linkage to move the eye shield out of the eye shield framework or into the eye shield framework according to the welder's choice. Operation of the motor is controlled by a breath-activated switch. An air chamber includes an aperture covered by a resilient diaphragm. A tube is connected to a second aperture in the air chamber. The welder exhales to outwardly flex the diaphragm from the chamber and inhales to inwardly flex the diaphragm. A rigid stem is connected between the diaphragm and an electrically conductive element.

Abstract: A welder's mask having a remote controlled eye shield for allowing the user to remotely and independently control opening of the eye shield when not needed, and closing of the eye shield when needed, which includes a conventional welder's mask housing having a viewing opening means to mount the mask housing upon the user's head. A conventional welder's eye shield is adjustably secured to the mask housing in such a way that it is moveable between a closed position covering the viewing opening, and an open position uncovering the viewing opening. A motor means, mounted on the mask housing, has a connecting means between the motor means and the eye shield which transmits the output of the motor means to the eye shield to move it between the open and closed positions.