Abstract: A lightweight virtual machine monitor (“LVMM”) allocates devices on a virtual host. In one embodiment, the LVMM identifies a primary and a secondary VM on the virtual host. The LVMM may expose various devices on the virtual host directly to the primary VM and provide these devices as virtual devices to the secondary partition.

Abstract: Improved silicon carbide composites made by an infiltration process feature a metal phase in addition to any residual silicon phase. Not only are properties such as mechanical toughness improved, but the infiltrant can be so engineered as to have much diminished amounts of expansion upon solidification, thereby enhancing net-shape-making capabilities. Further, multi-component infiltrant materials may have a lower liquidus temperature than pure silicon, thereby providing the practitioner greater control over the infiltration process. In particular, the infiltration may be conducted at the lower temperatures, where low-cost but effective bedding or barrier materials can terminate the infiltration process once the infiltrant has migrated through the permeable mass up to the boundary between the mass and the bedding material.

Abstract: Techniques to bond two or more smaller bodies or subunits to produce a unitary SiC composite structure extend the capabilities of reaction-bonded silicon carbide, for example, by making possible the fabrication of complex shapes. In a first aspect of the present invention, two or more preforms are bonded together with a binder material that imparts at least strength sufficient for handling during subsequent thermal processing. In a second aspect of the present invention, instead of providing the subunits to be bonded in the form of preforms, the subunits may be dense, SiC composite bodies, e.g., RBSC bodies. In each of the above embodiments, a preferable means for bonding two or more subunits combines aspects of adhesive and mechanical locking characteristics. One way to accomplish this objective is to incorporate a mechanical locking feature to the joining means, e.g., a “keyway” feature.

Abstract: Improved silicon carbide composites made by an infiltration process feature a metal phase in addition to any residual silicon phase. Not only are properties such as mechanical toughness improved, but the infiltrant can be so engineered as to have much diminished amounts of expansion upon solidification, thereby enhancing net-shape-making capabilities. Further, multi-component infiltrant materials may have a lower liquidus temperature than pure silicon, thereby providing the practitioner greater control over the infiltration process. In particular, the infiltration may be conducted at the lower temperatures, where low-cost but effective bedding or barrier materials can terminate the infiltration process once the infiltrant has migrated through the permeable mass up to the boundary between the mass and the bedding material.

Abstract: Improved silicon carbide composites made by an infiltration process feature a metal phase in addition to any residual silicon phase. Not only are properties such as mechanical toughness improved, but the infiltrant can be so engineered as to have much diminished amounts of expansion upon solidification, thereby enhancing net-shape-making capabilities. Further, multi-component infiltrant materials may have a lower liquidus temperature than pure silicon, thereby providing the practitioner greater control over the infiltration process. In particular, the infiltration may be conducted at the lower temperatures, where low-cost but effective bedding or barrier materials can terminate the infiltration process once the infiltrant has migrated through the permeable mass up to the boundary between the mass and the bedding material.

Abstract: Techniques to bond two or more smaller bodies or subunits to produce a unitary SiC composite structure extend the capabilities of reaction-bonded silicon carbide, for example, by making possible the fabrication of complex shapes. In a first aspect of the present invention, two or more preforms are bonded together with a binder material that imparts at least strength sufficient for handling during subsequent thermal processing. In a second aspect of the present invention, instead of providing the subunits to be bonded in the form of preforms, the subunits may be dense, SiC composite bodies, e.g., RBSC bodies. In each of the above embodiments, a preferable means for bonding two or more subunits combines aspects of adhesive and mechanical locking characteristics. One way to accomplish this objective is to incorporate a mechanical locking feature to the joining means, e.g., a “keyway” feature.

Abstract: A container for dispensing two flowable products in desired proportions includes a multichamber squeeze tube with a pair of nested tubes and a dispensing neck on it that are integrally molded with a transverse wall as a single piece. Apertures in the end wall provide dispensing openings for a first chamber inside the inner tube, and for a second chamber between the two tubes. The transverse wall has an annular stepped wall portion in it between the two tubes that is generally parallel with the outer surface of the dispensing neck and has a dispensing opening through the stepped wall portion. The openings through the stepped wall are formed by parting line contact between the mold surfaces of the mold used to form the squeeze tube. The single piece, two chamber squeeze tube is molded in a straight draw mold with a split mold piece only required to release external threads formed on the neck. A cap with internal threads screws onto the threaded neck.

Abstract: A plastic closure has a gas impermeable barrier member co-extruded with and substantially fully embedded within the cap so that the barrier member is mechanically captured within the molded cap. The substantially fully embedded barrier member extends at least across the end wall and can also extend circumferentially within and at least partially axially down the skirt from the end wall.

Abstract: A container for dispensing two flowable products in desired proportions includes a multichamber squeeze tube with a pair of nested tubes integrally molded with an end wall as a single piece. Apertures in the end wall provide dispensing openings for a first chamber inside the inner tube, and for a second chamber between the two tubes. Preferably, the two tubes have out of round cross-sections, generally ellipsoidal in configuration, and the outer tube has a cylindrical neck with a shoulder joining it to the out of round main section. The out of round inner tube extends up into the neck of the outer tube to the end wall and is integrally molded along a major axis to the shoulder of the outer tube. The single piece, two chamber squeeze tube is molded in a straight draw mold with a split mold piece only required to release external threads formed on the neck. A cap with internal threads screws onto the threaded neck.

Abstract: A television camera contains its electrode sub-assemblies mounted on printed circuit boards which extend radially from the central axis of the camera tube. The camera is provided with a cast spherical housing having a window located on the axis of the camera tube.