Abstract: A head-mountable flashback arrestor for a gas torch having body, head, and tip sections. The head-mountable flashback arrestor may be disposed in a variety of gas torches, such as cutting torches, welding torches, heating torches, and so forth. The flashback arrestor also may embody a variety of filtering mechanisms, such as a porous metal structure. For example, the porous metal structure may be sintered from a metal particulate, such as a stainless steel powder, to form a non-linear or random flow pattern.

Abstract: A torch operable to pivotally secure a lever on opposite sides of the torch. The torch may comprise a torch butt, a valve assembly, and a lever. The valve assembly may be operable to control a flow of a fluid through the torch butt. The lever may be selectively securable to a first portion of the torch butt and a second portion of the torch butt. The second portion of the torch butt may be disposed opposite the first portion of the torch butt. The valve assembly may be selectively securable within the torch butt to enable the lever to operate the valve assembly with the lever selected to pivot about the first portion of the torch butt and the second portion of the torch butt.

Abstract: An emergency cutting torch system adapted to be stored within a compartment of a rescue vehicle. The emergency cutting torch system may comprise a wheeled cart adapted to maintain a first gas storage tank and a second gas storage tank to the wheeled cart in all orientations of the wheeled cart. The emergency cutting torch system may comprise a rotateable lifting member adapted to be rotate outward to extend from the wheeled cart to facilitate engagement with a hook, or other lifting member, for lifting the emergency cutting torch system. The lifting member may rotate to a stowed position to reduce the outer dimensions of the emergency cutting torch system. The emergency cutting torch system may comprise a quick-release system to enable a hose assembly wound on a cart be removed quickly without having to unwind the hose assembly from the cart.

Abstract: An emergency cutting torch system adapted to be stored within a compartment of a rescue vehicle. The emergency cutting torch system may comprise a wheeled cart adapted to maintain a first gas storage tank and a second gas storage tank to the wheeled cart in all orientations of the wheeled cart. The emergency cutting torch system may comprise a rotateable lifting member adapted to be rotate outward to extend from the wheeled cart to facilitate engagement with a hook, or other lifting member, for lifting the emergency cutting torch system. The lifting member may rotate to a stowed position to reduce the outer dimensions of the emergency cutting torch system. The emergency cutting torch system may comprise a quick-release system to enable a hose assembly wound on a cart be removed quickly without having to unwind the hose assembly from the cart.

Abstract: A head-mountable flashback arrestor for a gas torch having body, head, and tip sections. The head-mountable flashback arrestor may be disposed in a variety of gas torches, such as cutting torches, welding torches, heating torches, and so forth. The flashback arrestor also may embody a variety of filtering mechanisms, such as a porous metal structure. For example, the porous metal structure may be sintered from a metal particulate, such as a stainless steel powder, to form a non-linear or random flow pattern.

Abstract: A pressure regulator having a disc spring. The pressure regulator comprises a valve having a movable device that is positioned to control fluid flow through the pressure regulator. Downstream fluid pressure produces a first force acting on the movable device to close the valve to block fluid flow through the pressure regulator. The disc spring produces a second force that acts on the movable device to open the valve to enable fluid to flow through the pressure regulator.

Abstract: An arc welding system using a wire to produce an arc. The arc welding system comprising a welding handle. A tip being disposed in the welding handle to direct wire through the welding handle. The tip having a passage through the tip to receive the wire. The tip having an end portion adapted to be in facing relationship with a target material during welding. The passage having an outer surface layer of electroless nickel. The end portion having an outer surface layer of electrolytic nickel.

Abstract: A welding system having a welding gun. The welding gun having a neck, a handle and a retaining nut for securing the neck to the handle. The retaining nut consists essentially of a polymeric material. The polymeric material may be polyphenylene sulfide (PPS).

Abstract: A welding gun includes a welding handle and at least one interchangeable assembly. A plurality of interchangeable assemblies are securable to the welding handle to enable the welding gun to be configured for operation in a plurality of welding applications. A first interchangeable assembly enables the welding gun to receive gas and wire. A second interchangeable assembly enables the welding gun to receive flux and wire. The welding gun is coupled to a power source. The welding gun may be coupled to a flux reservoir or a source of gas. The welding gun may be coupled to the system by a cable operable to convey wire, gas, and flux to the welding handle.

Abstract: A welding system having a welding gun. The welding gun having a neck, a handle and a retaining nut for securing the neck to the handle. The retaining nut consists essentially of a polymeric material. The polymeric material may be polyphenylene sulfide (PPS).

Abstract: A pressure regulator having a movable seat and a seat retainer. The seat retainer having a hollow interior with an interior surface. The seat is disposed within the hollow interior of the seat retainer to control fluid flow through the pressure regulator. The seat may be adapted to slidingly engage the interior surface of the seat retainer during movement of the seat to dampen the movement of the seat. The seat may be elastically deformed by the seating surface when seated against the seating surface. The pressure regulator may have a stem extending through the seat retainer orifice and affixed to the solid body of the seat to move the seat in response to movement of a diaphragm.

Abstract: A pressure regulator having a disc spring. The pressure regulator comprises a valve having a movable device that is positioned to control fluid flow through the pressure regulator. Downstream fluid pressure produces a first force acting on the movable device to close the valve to block fluid flow through the pressure regulator. The disc spring produces a second force that acts on the movable device to open the valve to enable fluid to flow through the pressure regulator.

Abstract: An arc welding system using a wire to produce an arc. The arc welding system comprising a welding handle. A tip being disposed in the welding handle to direct wire through the welding handle. The tip having a passage through the tip to receive the wire. The tip having an end portion adapted to be in facing relationship with a target material during welding. The passage having an outer surface layer of electroless nickel. The end portion having an outer surface layer of electrolytic nickel.

Abstract: A welding gun comprising a welding handle and at least one interchangeable assembly. A plurality of interchangeable assemblies are securable to the welding handle to enable the welding gun to be configured for operation in a plurality of welding applications. A first interchangeable assembly enables the welding gun to receive gas and wire. A second interchangeable assembly enables the welding gun to receive flux and wire. The welding gun is coupled to a power source. The welding gun may be coupled to a flux reservoir or a source of gas. The welding gun may be coupled to the system by a cable operable to convey wire, gas, and flux to the welding handle.

Abstract: A pressure regulator having a movable seat and a seat retainer. The seat retainer having a hollow interior with an interior surface. The seat is disposed within the hollow interior of the seat retainer to control fluid flow through the pressure regulator. The seat may be adapted to slidingly engage the interior surface of the seat retainer during movement of the seat to dampen the movement of the seat. The seat may be elastically deformed by the seating surface when seated against the seating surface. The pressure regulator may have a stem extending through the seat retainer orifice and affixed to the solid body of the seat to move the seat in response to movement of a diaphragm.

Abstract: An integrated regulator and flow meter assembly having a piston reciprocatingly disposed in an opening of a body member, a support member disposed in the body member opening over the piston, and a flow tube coupled to the support member, wherein an aperture of the support member interconnects a flow conduit of the piston and the flow tube. A spring, preferably a wave spring or disc spring, biases the piston away from an orifice with a valve seat formed thereabout on an end portion of the body member opening. In one embodiment, the piston and a seating surface thereof are formed unitarily of a plastic material.