Abstract: A manufacturing method for producing ceramic item from a photocurable ceramic filled material by stereolithography. The method compensates for the anisotropic shrinkage of the item during firing to produce a dimensionally accurate item.

Abstract: A manufacturing method for producing ceramic item from a photocurable ceramic filled material by stereolithography. The method compensates for the anisotropic shrinkage of the item during firing to produce a dimensionally accurate item.

Abstract: A manufacturing method for producing ceramic item from a photocurable ceramic filled material by stereolithography. The method compensates for the anisotropic shrinkage of the item during firing to produce a dimensionally accurate item.

Abstract: Supports for green ceramic stereolithography parts are disclosed which limit or minimize deformation during burnout and sintering. The supports have a time/temperature thermal response tuned to the part being sintered and control geometrically-induced distortion or gravimetric sag.

Abstract: A lightweight, structurally strong, hanging storage tray adapted to be suspended from a conventional classroom chair, a ladder or other implement for holding various forms of articles. When used with a conventional classroom chair, the tray is well suited to store books, laptop computers, notebooks, 3-ring binders, etc. The tray can be easily attached or moved from a conventional chair or ladder without any tools or independent fastening elements. The tray is further shaped such that it is stackable with other trays when it is to be stored.

Abstract: Systems and processes are disclosed to provide pre-heated air to a furnace configured to treat ceramic green bodies which are made of a particulate material and a combustible fugitive binder. In one embodiment the furnace includes a heater disposed within an intake conduit which supplies pre-heated air to a combustion chamber disposed within the furnace.

Abstract: A manufacturing method for producing ceramic item from a photocurable ceramic filled material by stereolithography. The method compensates for the anisotropic shrinkage of the item during firing to produce a dimensionally accurate item.

Abstract: A lightweight, structurally strong, hanging storage tray adapted to be suspended from a conventional classroom chair, a ladder or other implement for holding various forms of articles. When used with a conventional classroom chair, the tray is well suited to store books, laptop computers, notebooks, 3-ring binders, etc. The tray can be easily attached or moved from a conventional chair or ladder without any tools or independent fastening elements. The tray is further shaped such that it is stackable with other trays when it is to be stored.

Abstract: The removal of ceramic material from the interior of cast metallic components is accomplished in a closed system. A vessel within the system is filled with a chemical leaching fluid that immerses the cast component having the ceramic material and/or ceramic cores therein. The leaching fluid is superheated and boiling is controlled by varying the pressure within the closed system without changing the molecules in the vessel.

Abstract: The removal of ceramic material from the interior of cast metallic components is accomplished in a closed system. A vessel within the system is filled with a chemical leaching fluid that immerses the cast component having the ceramic material and/or ceramic cores therein. The leaching fluid is superheated and boiling is controlled by varying the pressure within the closed system without changing the molecules in the vessel.

Abstract: The present invention is a monolithic ballasted penetrator capable of delivering a working payload to a hardened target, such as reinforced concrete. The invention includes a ballast made from a dense heavy material insert and a monolithic case extending along an axis and consisting of a high-strength steel alloy. The case includes a nose end containing a hollow portion in which the ballast is nearly completely surrounded so that no movement of the ballast relative to the case is possible during impact with a hard target. The case is cast around the ballast, joining the two parts together. The ballast may contain concentric grooves or protrusions that improve joint strength between the case and ballast. The case further includes a second hollow portion; between the ballast and base, which has a payload fastened within this portion. The penetrator can be used to carry instrumentation to measure the geologic character of the earth, or properties of arctic ice, as they pass through it.