Abstract: A horizontal direction drilling system comprises a power pack coupled to a source of compressed air and a water reservoir and forms a mixture of compressed air, water, and oil. The horizontal direction drilling system further comprises a steerable horizontal drill. The steerable horizontal drill includes an air powered reciprocating hammer, and a drill head. The steerable horizontal drill receives the mixture to power the reciprocating hammer. The drill head includes a drill face and the mixture exits the steerable horizontal drill through the drill face.

Abstract: A shell structure for a turbine engine that includes a plurality of diaphragms, wherein each diaphragm comprises: an annularly formed support structure that positions and secures a row of circumferentially spaced stator blades, and wherein the plurality of diaphragms are configured and axially stacked such that each diaphragm abuts the diaphragm that is positioned directly upstream from it and the diaphragm that is positioned directly downstream from it such that a first shell structure is formed; a second shell structure disposed outboard of the first shell structure; and an intermediate chamber defined between an outboard face of the first shell structure and an inboard face of the second shell structure; wherein: a downstream end and an upstream end of the first shell structure define the axial length of the first shell structure; one or more downstream radial ports are defined at the approximate axial position of the downstream end of the first shell structure, each downstream radial port fluidly connecti

Abstract: A horizontal direction drilling system comprises a power pack coupled to a source of compressed air and a water reservoir and forms a mixture of compressed air, water, and oil. The horizontal direction drilling system further comprises a steerable horizontal drill. The steerable horizontal drill includes an air powered reciprocating hammer, and a drill head. The steerable horizontal drill receives the mixture to power the reciprocating hammer. The drill head includes a drill face and the mixture exits the steerable horizontal drill through the drill face.

Abstract: A horizontal direction drilling system comprises a power pack coupled to a source of compressed air and a water reservoir and forms a mixture of compressed air, water, and oil. The horizontal direction drilling system further comprises a steerable horizontal drill. The steerable horizontal drill includes an air powered reciprocating hammer, and a drill head. The steerable horizontal drill receives the mixture to power the reciprocating hammer. The drill head includes a drill face and the mixture exits the steerable horizontal drill through the drill face.

Abstract: A shell structure for a turbine engine that includes a plurality of diaphragms, wherein each diaphragm comprises: an annularly formed support structure that positions and secures a row of circumferentially spaced stator blades, and wherein the plurality of diaphragms are configured and axially stacked such that each diaphragm abuts the diaphragm that is positioned directly upstream from it and the diaphragm that is positioned directly downstream from it such that a first shell structure is formed; a second shell structure disposed outboard of the first shell structure; and an intermediate chamber defined between an outboard face of the first shell structure and an inboard face of the second shell structure; wherein: a downstream end and an upstream end of the first shell structure define the axial length of the first shell structure; one or more downstream radial ports are defined at the approximate axial position of the downstream end of the first shell structure, each downstream radial port fluidly connecti

Abstract: A horizontal direction drilling system comprises a power pack coupled to a source of compressed air and a water reservoir and forms a mixture of compressed air, water, and oil. The horizontal direction drilling system further comprises a steerable horizontal drill. The steerable horizontal drill includes an air powered reciprocating hammer, and a drill head. The steerable horizontal drill receives the mixture to power the reciprocating hammer. The drill head includes a drill face and the mixture exits the steerable horizontal drill through the drill face.

Abstract: A steam turbine has a diaphragm (20) and a rotor/bucket assembly (1). Steam directed to the assembly flows through the diaphragm. A setback (38b) is formed in a root setback face (38) of the diaphragm adjacent the assembly, and a plurality of grooves (36) formed in the setback provide a steam flow path (Qf) between the diaphragm and rotor/bucket assembly. The grooves are radially extending grooves extending the height of the setback, and the number, width, and spacing of the grooves are a function of the design of the steam turbine. When the steam turbine is in a fully closed position, the grooves provide a steam flow path by which upstream pressure on the rotor/bucket assembly is relieved and damage to the assembly prevented.

Abstract: A robust fastener locking device (10, 20) prevents loosening of a fastener (F) used to attach to two parts (P1, P2) together. A plate (12, 22) fits against a part and abuts against at least two adjacent sides (S1, S2) of the part. The plate has an opening (14, 24) therein sized for a bolt to be inserted through the opening with the head of the bolt, or the nut (N) bearing against the plate when the fastener is secured in place. A portion of the plate adjacent the opening is deformable about the fastener after the fastener is secured in place to prevent subsequent rotation of the fastener which would loosen the fastener. In one embodiment, tabs (30a-30c) are formed adjacent the opening and can be bent about the portion of the fastener. The tab is broken off if the fastener needs to be removed, but the locking device can be reused.

Abstract: A steam turbine has a diaphragm (20) and a rotor/bucket assembly (1). Steam directed to the assembly flows through the diaphragm. A setback (38b) is formed in a root setback face (38) of the diaphragm adjacent the assembly, and a plurality of grooves (36) formed in the setback provide a steam flow path (Qf) between the diaphragm and rotor/bucket assembly. The grooves are radially extending grooves extending the height of the setback, and the number, width, and spacing of the grooves are a function of the design of the steam turbine. When the steam turbine is in a fully closed position, the grooves provide a steam flow path by which upstream pressure on the rotor/bucket assembly is relieved and damage to the assembly prevented.