Abstract: Medical needle shield apparatus for covering a needle after use. In embodiments of this invention a shield with two or more segments hingedly connected to each other is movable from a retracted position where the needle is exposed, to an extended position where the shield extends beyond the end of the needle. The needle is affixed in a hub of a medical needle device, and the shield is articulated to the hub. At least one of the two or more segments has an open orifice through which the needle passes to form an axis of intersection about the needle. The shield includes a channel for covering the needle when the shield is linearly extended. One or more locks associated with one or more of the segments secures one or more of the segments relative to the shield in the extended position. A latch is also disposed on the distal segment for securing the distal segment relative to the shield when in the extended position.

Abstract: A saw guide bearing casting machine includes a pair of mold plates selectively movable by a cylinder between a closed operative position defining a mold cavity for receiving molten babbitt material and forming material into a saw guide bearing. The first mold plate includes a flat planar portion of the mold cavity. The second mold plate includes the remainder of the mold cavity, for forming the sides and face portions of the bearing. The second late slides on guide rods while the first plate is held stationary. Ejection pins and hole forming plugs and studs are provided on the second plate. The ejection pins slide within the second plate and through a stationary stop plate. Abutments are mounted on the ejection pins on opposite sides of the stop plate. Inward abutments strike the stop plate as the second plate is retracted, to force the cast bearing to drop from the mold.

Abstract: The methods and test kit of the present invention provide a fast, inexpensive, reproducible, simple, and accurate method for optimizing the dosage of an asphaltene dispersant antifouling agent for a given crude oil containing asphaltenes. A method is provided wherein a sample of the crude oil is diluted with a quantity of an aromatic organic solvent. To the diluted crude oil is added a known amount of the antifouling agent being evaluated. A portion of the diluted crude oil containing the antifouling agent is removed and mixed with a quantity of a liquid paraffinic hydrocarbon. The concentration of materials which remain dispersed in the liquid paraffinic hydrocarbon is measured. The inventive methods are useful to evaluate a single dose of an antifouling agent or may be used to simultaneously evaluate a plurality of doses in order to determine which dose is most effective for a given sample of crude oil.

Abstract: A destructible core is formed from a frangible plastic shell filled with inert ballast. The core is used for forming complex cavities in the production of cast resin parts.

Abstract: Multilayer printed circuit board is fabricated by coating a suitable substrate, metal, plastic, paper, with a photosensitive coating, exposing the photosensitive coating to form a dielectric thereof, coating the dielectric layer with a coating of a photosensitive chemical solution, selectively imaging and developing the photosensitive coating to form a desired circuit pattern on the dielectric coating, forming a first layer of circuitry by coating the circuit pattern with a conducting material, coating the circuitry bearing layer with a second layer of photosensitive material, selectively exposing and developing the second layer of photosensitive material to form a dielectric with open windows to the first circuit layer, coating the second dielectric layer of the first circuitry with a coating of photosensitive chemical solution, selectively imaging and developing the coating of photosensitive chemical solution to form a circuit pattern and an interconnect pattern and forming a conductor layer of circuitry an