Abstract: A hinge for supporting a vent between a closed position in which it lies within a fixed frame and an open position in which it extends substantially perpendicularly to the fixed frame comprises a support track, a slider mounted on the support track and a vent arm attached to the support track via the slider by a plurality of links. The hinge further comprises a restricting member for acting between the support track and the vent arm wherein upon movement of the vent arm, the restricting member acts to further restrict movement of the vent arm. The slider includes a body portion and a restricting device for engaging the track, in use, to limit movement of the slider, wherein a portion of the restricting device extends into the body portion of the slider to provide reinforcement thereto.

Abstract: A hinge for supporting a vent between a closed position in which it lies within a fixed frame and an open position in which it extends substantially perpendicularly to the fixed frame comprises a support track, a slider mounted on the support track and a vent arm attached to the support track via the slider by a plurality of links. The hinge further comprises a restricting member for acting between the support track and the vent arm wherein upon movement of the vent arm, the restricting member acts to further restrict movement of the vent arm. The slider includes a body portion and a restricting device for engaging the track, in use, to limit movement of the slider, wherein a portion of the restricting device extends into the body portion of the slider to provide reinforcement thereto.

Abstract: A thermally conductive film that includes a film of polymeric matrix material having a thickness t defined between a top surface and a bottom surface. A plurality of fibers, having a greater thermal conductivity than the polymeric matrix material, is disposed in the film and extends between the top surface and the bottom surface. Each of the fibers are oriented in the film to form a fiber-to-film surface angle .theta. relative to the top and bottom surfaces that is greater than about 45.degree. but is less than arctan t/d, where t is the thickness of the film and d is the diameter of the fibers in the direction of the angle .theta.. A shear/extruder apparatus is used to form the thermally conductive film from a sheet of composite prepreg material. An upper die block and a lower die block separated by a predetermined distance form an extrusion slot therebetween.

Abstract: A thermally conductive film that includes a film of polymeric matrix material having a thickness t defined between a top surface and a bottom surface. A plurality of fibers, having a greater thermal conductivity than the polymeric matrix material, is disposed in the film and extends between the top surface and the bottom surface. Each of the fibers are oriented in the film to form a fiber-to-film surface angle .theta. relative to the top and bottom surfaces that is greater than about 45.degree. but is less than arctan t/d, where t is the thickness of the film and d is the diameter of the fibers in the direction of the angle .theta.. A shear/extruder apparatus is used to form the thermally conductive film from a sheet of composite prepreg material. An upper die block and a lower die block separated by a predetermined distance form an extrusion slot therebetween.

Abstract: A thermally conductive film that includes a film of polymeric matrix material having a thickness t defined between a top surface and a bottom surface. A plurality of fibers, having a greater thermal conductivity than the polymeric matrix material, is disposed in the film and extends between the top surface and the bottom surface. Each of the fibers are oriented in the film to form a fiber-to-film surface angle .theta. relative to the top and bottom surfaces that is greater than about 45.degree. but is less than arctan t/d, where t is the thickness of the film and d is the diameter of the fibers in the direction of the angle .theta.. A shear/extruder apparatus is used to form the thermally conductive film from a sheet of composite prepreg material. An upper die block and a lower die block separated by a predetermined distance form an extrusion slot therebetween.

Abstract: A prepreg formulation comprising prepreg fabric or filament fibers unidirectionally aligned and a toughened resin system comprising a thermosetting matrix resin and a small amount of a chromium (III) complex. In another embodiment, the invention includes the presence of thin surface layers of extremely fine fibers of a thermoformable polymer having at least one of a T.sub.m or T.sub.g greater than about 300.degree. C. or no T.sub.m or T.sub.g and a decomposition temperature greater than about 300.degree. C. In another embodiment, the invention includes the presence of inorganic fine fibers. The preferred matrix resin is a blend of a thermosetting epoxy resin and an amorphous thermoplastic polymer having a T.sub.g greater than about 195.degree. C.

Abstract: An article of manufacture comprising a circuit board construction which comprises a composite of a electronic circuit provided on a dielectric article in which the article comprises a layer of syntactic film.

Abstract: A prepreg formulation comprising prepreg filament fibers unidirectionally aligned, and/or woven and nonwoven fibrics, a thermosetting matrix resin and thin surface layers of extremely fine fibers of a thermoformable polymer having at least one of a T.sup.m or T.sup.g greater than about 300.degree. C. or no T.sup.m or T.sub.g and a decomposition temperature greater than about 300.degree. C. The preferred matrix resin is a blend of a thermosetting epoxy resin and an amorphous thermoplastic polymer that has a T.sub.g greater than about 195.degree. C. The invention contemplates the addition of small amounts of a Cr(III) complex and inorganic whiskers.

Abstract: The invention relates to an impact resistent syntactic foam-prepreg composite material comprising syntactic foam of microballoons in a matrix resin bonded to a compatible resin containing carbon fiber prepeg in which the syntactic foam is one or more thin uniform layers located within the composite material sufficiently close to an impact prone surface of the composite to enhance the composite's ability to withstand the impact through such surface.