A 3D printer includes at least one consumable loading bay configured to supply filament from a consumable supply assembly to a print head and at least one drive assembly that is configured to advance filament to the print head from the consumable supply. Each drive assembly includes a follower wheel rotatable about a follower axis and a drive wheel spaced apart from the follower wheel. The drive wheel is rotatable about a drive axis and is located on an opposing side of a filament path from the follower wheel such that the follower axis and the drive axis are substantially parallel. The drive wheel further includes an outer surface extending between two ends and has at least one engaging portion that is configured to engage with the filament and at least one disengaging portion that is configured to disengage from the filament.

A drain cleaner including a cable configured to inserted in a drain, a drum supporting the cable, a motor configured to rotate the drum, and a cable feed control mechanism configured to feed the cable in a linear direction. The cable feed mechanism includes a plurality of feed wedges surrounding the cable, a plurality of rollers supported by the feed wedges, and a collar positioned around at least a portion of the plurality of feed wedges and having a cam surface. Each feed wedge has an inclined surface. Movement of the collar relative to the plurality of feed wedges causes the cam surface of the collar to engage the inclined surfaces of the plurality of feed wedges to move the plurality of feed wedges radially inward and into engagement with the cable.

A drain cleaner including a cable configured to inserted in a drain, a drum supporting the cable, a motor configured to rotate the drum, and a cable feed control mechanism configured to feed the cable in a linear direction. The cable feed mechanism includes a plurality of feed wedges surrounding the cable, a plurality of rollers supported by the feed wedges, and a collar positioned around at least a portion of the plurality of feed wedges and having a cam surface. Each feed wedge has an inclined surface. Movement of the collar relative to the plurality of feed wedges causes the cam surface of the collar to engage the inclined surfaces of the plurality of feed wedges to move the plurality of feed wedges radially inward and into engagement with the cable.

A method for transporting fuel to a geographic specific location and retrieving empty fuel hose by connecting a fuel hose to a vessel, deploying the fuel hose from the moveable container associated with the tugger while transporting the moveable container and tugger to a temporary fuel terminal with a manifold, connecting the fuel hose to the manifold, charging the fuel hose with fuel from the vessel, and retrieving the fuel hose by passing the fuel hose over a lead roller mounted to the frame in the first segment to a second segment. The fuel hose is aligned in the tugger for high speed retrieval without entanglement for storage in a moveable container.

A method for transporting fuel to a geographic specific location and retrieving empty fuel hose by connecting a fuel hose to a vessel, deploying the fuel hose from the moveable container associated with the tugger while transporting the moveable container and tugger to a temporary fuel terminal with a manifold, connecting the fuel hose to the manifold, charging the fuel hose with fuel from the vessel, and retrieving the fuel hose by passing the fuel hose over a lead roller mounted to the frame in the first segment to a second segment. The fuel hose is aligned in the tugger for high speed retrieval without entanglement for storage in a moveable container.

A consumable filler metal delivery system includes a reciprocating wire feeding gear assembly configured to move a wire forward and backward with a net forward motion and a motor configured to drive the reciprocating wire feeding gear assembly, wherein the motor is configured to rotate only in one direction during operation of the consumable filler metal delivery system.

A consumable filler metal delivery system includes a reciprocating wire feeding gear assembly configured to move a wire forward and backward with a net forward motion and a motor configured to drive the reciprocating wire feeding gear assembly, wherein the motor is configured to rotate only in one direction during operation of the consumable filler metal delivery system.

A rodstock barrel drive having a first and second roller gears, each having a toothed section and a gripping surface section, such that the teeth of the roller gears intermesh, causing rotation of one of roller gear to rotate the other roller gear in the opposite direction, so as to draw a rodstock through a space between the gripping surfaces of the pair of roller gears, a ring gear which engages with one of the pair of roller gears, a drive gear which engages with the ring gear, and one or more idler gears which engage with the ring gear, all within a housing, the drive gear being connected to, and rotated by, a motor, which causes the rodstock to be drawn through the roller gears, wherein all the gears are all positioned within, and oriented parallel to, a common plane.

The present invention relates generally to medical equipment, more particularly, the use of fluid hoses coupling tanks to cannulas, as part of medical gas therapy, such as oxygen therapy. The invention describes a collection system for managing excess flexible hose that a patient might need to wear for medical reasons such as home oxygen medical therapy. It comprises a collection container, a non-spooling roller system for collecting excess hose into the collection container and extraction from the collection container, and power system to power and control the roller system.

The present invention relates generally to medical equipment, more particularly, the use of fluid hoses coupling tanks to cannulas, as part of medical gas therapy, such as oxygen therapy. The invention describes a collection system for managing excess flexible hose that a patient might need to wear for medical reasons such as home oxygen medical therapy. It comprises a collection container, a non-spooling roller system for collecting excess hose into the collection container and extraction from the collection container, and power system to power and control the roller system.