A method and apparatus is disclosed for additive manufacturing and three-dimensional printing, and specifically for extruding tubular objects. A print head extrudes a curable material into a tubular object, while simultaneously curing the tubular object and utilizing the interior of the cured portion of the tubular object for stabilizing and propelling the print head.

A device for spraying a liquid for use in dye penetration inspection into an inner cavity of a workpiece for making a turbine engine part, the device including a workpiece support, a manifold for spraying the inspection liquid into the inner cavity, a manifold for sucking up and discharging the sprayed inspection liquid, and a mechanism for tilting at least a portion of the support from a substantially horizontal position to an inclined position in which the workpiece is inclined so that the inspection liquid sprayed into the cavity flows under gravity to a zone from which it is sucked up.

An apparatus for introducing a parting agent into a hollow workpiece before or during processing of the hollow workpiece by using a laser processing machine, includes an introduction section with a nozzle for dispensing the parting agent and a centering element which is disposed on the introduction section and serves for centering the introduction section within the hollow workpiece. A loading station, a system and a method are also provided.

A de-ice apparatus is configured to remove ice buildup in containers or other locations by melting the ice using a de-ice component and to remove waste fluid using a vacuum component. The de-ice component causes discharge of pressurized fluid to melt ice. The de-ice component may include a base with guide features configured to engage an opening of the container. The de-ice component may direct a spray of the pressurized fluid into the container to melt the ice. The de-ice component may include a pressure regulator valve to selectively regulate a resulting force of the fluid sprayed into the container, which may enable a user to avoid damaging internal components located within the container. The vacuum component may cause the pressurized fluid to flow through a high pressure nozzle to create a vacuum effect at a suction inlet, which can extract waste fluid and/or other debris from the container.

Pipe inspection systems including a push-cable, jetter, and camera assembly are disclosed. A jetter nozzle may be configured to spin and/or propel the camera head within a pipe or other cavity. A cutter line may be attached to the camera head to clean obstructions. A sonde may be coupled to a camera head to generate magnetic field signals for use with a buried utility locator to locate a pipe or other cavity into which the camera head is deployed.

A holder, a transport device, and a method of manufacturing a container are described. The container comprises a body that extends along an axis and a flange that extends radially to the axis, and the holder comprises one or more fastening elements that are configured to engage one or more of a top surface, a bottom surface, or a peripheral surface of the flange.

An in-situ applicator for applying a composition in a pipe comprises a flow diverter configured to receive a composition and eject the composition from at least one outlet. The applicator also comprises a hollow conical body having a narrow end, a broad end, and an interior surface configured to receive the composition ejected from the flow diverter. The conical body also has a plurality of holes forming a band that wraps circumferentially around the conical body which defines a flow region on the interior surface between the band and the narrow end. The band includes first holes adjacent to the flow region where each of the first holes has a first average diameter and second holes disposed between the first holes and the broad end, each of the second holes having an average diameter greater than the first diameter.

A liquid flow-focusing apparatus for droplet atomization may include a dispensing body, including a liquid duct and a gas duct defined therein. The apparatus may include a plurality of nozzle wells defined in the dispensing body. The apparatus may include a plurality of flow-focusing nozzle inserts. Each nozzle well of the plurality of nozzle wells may be shaped to house a flow-focusing nozzle insert of the plurality of flow-focusing nozzle inserts. Each flow-focusing nozzle insert of the plurality of flow-focusing nozzle inserts may be housed in a corresponding nozzle well of the plurality of nozzle wells. Each flow-focusing nozzle insert of the plurality of flow-focusing nozzle inserts may be in fluid communication with the liquid duct and the gas duct.

A prosthetic heart valve includes a base and a plurality of polymeric leaflets. Each leaflet has a root portion coupled to the base, and each leaflet has an edge portion substantially opposite the root portion and movable relative to the root portion to coapt with a respective edge portion of at least one of the other leaflets of the plurality of leaflets. Each leaflet includes) at least two polymers along at least one portion of the leaflet, and each leaflet has a composition gradient of each of the at least two polymers along at least one portion of the leaflet.

An internal pipe powder coating system includes a nozzle having an attachment device to removably attach to a chamber; the nozzle having holes extending through a thickness of the body; a powder coating machine engaged with the chamber to deliver powder coating to the nozzle; the nozzle sprays the powder coating to an inside of a pipe.