Abstract: Integrated core-shell investment casting molds that provide tongue or groove structures corresponding, respectively, to groove or tongue structures in the surface of the turbine blade or stator vane, including in locations that are otherwise inaccessible provide a pathway to restrict cooling flow between turbine blades to the flowpath.

Abstract: Integrated core-shell investment casting molds that provide tongue or groove structures corresponding, respectively, to groove or tongue structures in the surface of the turbine blade or stator vane, including in locations that are otherwise inaccessible provide a pathway to restrict cooling flow between turbine blades to the flowpath.

Abstract: The present disclosure generally relates to integrated core-shell investment casting molds that provide tongue or groove structures corresponding, respectively, to groove or tongue structures in the surface of the turbine blade or stator vane, including in locations that are otherwise inaccessible. The groove and tongue structures also provide a pathway to restrict cooling flow between turbine blades to the flowpath.

Abstract: A platform including an upper deck and a lower deck longer than the upper deck, both being constructed of a light-weight sturdy material. The edges of the upper deck extend downward and the edges of the lower deck extend upward. The decks are hinged together at the forward edge of the platform, which comes in contact with the roof. Male-female sleeves are attached to the inner parts of the sides and support pieces of both decks to provide support. The sleeves adjust so the platform can accommodate varying roof pitches. The bottom surface of the lower deck is covered in non-skid material to provide adhesion to the roof. The forward edge of the lower deck has extensions with holes so the platform can be secured to the roof with screws or nails.

Abstract: The Adjustable Portable Roof Work Platform is a new rectangular platform consisting of an upper deck and a longer lower deck constructed of a light-weight yet sturdy material and tubular framework. The decks are hinged together the edge of the platform that comes in contact with the roof which is labeled the forward edge. Tubular male-female sleeves are attached on the inner parts of the side frames of both decks with hinge pins or bolts with spacer washers to provide support and adjust to accommodate varying roof pitches. The bottom surface of the lower deck is completely covered in non-skid material to provide greater surface tension and adhesion on a roof. The forward edge of the lower deck extends beyond the frame and has holes so that the platform can be secured to a roof with screws or nails. The rear edge of the upper deck has a lip extending upward as an option.