Abstract: The present disclosure relates to impellers with removable and replaceable vanes, and methods of constructing such impellers. According to aspects of the present disclosure, a plurality of impeller back plates are provided with differently configured slots to receive removable vanes. In addition, a plurality of differently configured vanes are disclosed which may be connected to the plurality of impeller back plates. As a result, the desired performance characteristics of a pump based upon end use applications may be efficiently and quickly achieved by combining appropriately configured vanes and back plate into a desired impeller providing the desired characteristics, together with a particular pump casing and motor.

Abstract: A device for coupling two shafts by a gear mechanism includes a coupling part ending one of the two shafts. The coupling part is fitted concentrically into a complementary coupling part ending the other shaft. Splines of the coupling part have a constant profile along a median zone of the coupling part and which, in a first zone in continuation of the median zone, has a smaller thickness, between flanks of a spline, than a maximum thickness of the same spline in the median zone. Splines of the coupling part continue, beyond the first zone, as far as a centering zone on the same side as the first zone. The splines and the spline bottoms have, in the coupling zone between the centering zone and the first zone, a profile that continuously couples the splines and the spline bottoms to the surface of the centering zone.

Abstract: A hydraulic motor assembly capable of precise control having a housing, a hydraulic mounting surface located in the housing, a cylinder block rotatably disposed on the hydraulic mounting surface, a motor shaft engaged to the cylinder block and supported proximate to a first end, a plurality of cooperating gears located in the housing and rotationally engaged to a second end of the motor shaft, an output shaft rotationally engaged to the plurality of cooperating gears, a speed sensor located proximate to one of the plurality of cooperating gears, wherein the speed sensor transmits a signal indicative of the rotational speed of the one of the plurality of cooperating gears.

Abstract: Provided are a stator blade assembly advantageous for improving the evacuation performance by shortening the evacuation time, and an exhaust pump provided with such a stator blade assembly. Inner and outer stator blade bases of a plurality of stator blades are supported by frames. A projecting portion protruding from the frame supporting the inner stator blade base, or from the frame supporting the outer stator blade base, or from both of the frames is provided in a gap in the vicinity of the inner or outer stator blade base between one of the supported stator blades and the stator blade transversely adjacent thereto.

Abstract: A strut-flap vane system for a turbomachine includes a vane strut comprising an airfoil portion and a strut mount extending in a radially outward direction from the airfoil portion. The strut mount forms a hollow semi-cylinder and includes threading on an outer diameter thereof. The system includes an aft mount portion or portions defining a hollow semi-cylinder configured to form a strut cylinder with the strut mount such that the aft mount portion can be disposed in contact with the strut mount to form the strut cylinder. The strut cylinder defines a cylinder opening and the aft mount portion includes threading on an outer diameter thereof that aligns with the threading of the strut mount to allow a strut spanner nut to mesh with both the strut mount and the mount portion.

Abstract: Embodiments of the invention provide a paddle wheel mechanism for a pool cleaner. The paddle wheel mechanism includes a housing, a paddle wheel shaft supported by the housing, a first paddle wheel, and a second paddle wheel. The housing directs fluid from a fluid path of the pool cleaner into a first flow path and a second flow path. The first paddle wheel is supported by the paddle wheel shaft and is positioned within the housing along the first flow path. The second paddle wheel is supported by the paddle wheel shaft and is positioned within the housing along the second flow path. The first paddle wheel rotates responsive to fluid directed along the first flow path, and the second paddle wheel rotates responsive to fluid directed along the second flow path.

Abstract: A machine adapted to carry out at least one laundry drying cycle. Such machine comprises a frame wherein a tub is mounted; a drum wherein laundry is placed, said drum being rotatably mounted within the tub and having at least one load opening; a door movable between a closed position and an open position; a drying system comprising: an intake channel for removing humid air from the tub; a delivery channel for supplying dry air into the drum; a drying apparatus interposed between the intake channel and the delivery channel for separating at least partially the air from the water contained therein obtaining dry air. The delivery channel is at least partially provided on the door.

Abstract: A turbine thrust shaft providing a thrust disk having a surface P and a surface Q, and a shaft body formed through the thrust disk, the shaft body including a first plurality of holes, wherein the first plurality of holes are spaced apart and each hole of the first plurality of holes has a first diameter between 0.0600 inches to 0.0680 inches and has a first center disposed a first distance between 0.1400 inches to 0.1600 inches from surface P, and a second plurality of holes wherein the second plurality of holes are spaced apart and each hole of the second plurality of holes has a second diameter between 0.0960 inches to 0.1040 inches and has a second center disposed a second distance between 2.1350 inches to 2.1550 inches from surface Q.

Abstract: A rotor for a gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a rotor disk rotatable about an axis and a gas path wall coupled to and radially outward of the rotor disk. The gas path wall bounds a radially inward portion of a gas path. A plurality of rotor spokes are radially intermediate the rotor disk and the gas path wall. The plurality of rotor spokes is circumferentially spaced to define a plurality of cooling channels intermediate the rotor disk and the gas path wall. A thermal barrier coating is disposed on a surface of at least one of the plurality of cooling channels. A method of cooling a rotor assembly is also disclosed.

Abstract: A support assembly for a gas turbine engine includes a control ring that extends about a circumferential axis. A plurality of first supports has a cavity that receives the control ring. A plurality of cover plates are attached to the first plurality of supports and enclose the cavity.

Abstract: The propeller fan includes a boss including a rotation axis, a plurality of blades formed on an outer periphery of the boss, and a bellmouth arranged so as to surround the plurality of blades at a trailing edge side of each of the blades. Each blade has a bending portion that bulges toward an upstream side of the air current in a cross-sectional shape in a radial direction, and a bend of the bending portion of the blade at an inner side of the bellmouth is set to be gentler than a bend of the bending portion of the blade at an outer side of the bellmouth.

Abstract: An input piston connected to a brake pedal and an output piston which is moved forward to increase a hydraulic pressure in a pressure chamber are fitted to each other telescopically, and an engaging spring is provided between the input piston and the pressure chamber. The output piston is moved forward relative to the input piston by a hydraulic pressure in a rear chamber while compressing the engaging spring. Since a set load of the engaging spring is set at a small value, the output piston is moved forward relative to the input piston in an initial period of a braking operation, making it possible to reduce a stroke of the input piston which is required for a hydraulic pressure in brake cylinders to reach a first set pressure.

Abstract: A triple piston fluid pressure cylinder is disclosed with a parallel arrangement of the pistons that allows a combination of the first two stages of the cylinder into one stage so that the first two stages of the cylinder are working into the same common space. As the result of that arrangement the overall length of the triple pistons cylinder is reduced by a significant amount. The saved length may be used to increase the stroke of the cylinder. The piston body assembly is built around the piston arrangement, and is composed of a cylinder tube with one head end cover and one rod end cover and one middle fixed pistons. The middle fixed piston is extended through an extension tube to an extension fixed piston.

Abstract: A turbine engine fan rotor having a disk carrying blades, a substantially frustoconical cover mounted on the disk, and axial retention device for retaining the blades and including a ring mounted in an annular groove in the disk and forming a bearing surface for roots of the blades. The ring is festooned or crenellated and co-operates with a festooned radial annular lip of the disk. The rotor also has at least one axial tooth inserted in hollow portions of the ring and of the lip of the disk. Two coaxial parts arranged radially inside the disk have respective first and second fastener flanges for fastening to the disk, said flanges being axially interposed between the cover and the disk, being circumferentially offset relative to one another, and being fastened independently of one another to the disk.

Abstract: A hydrostatic variable displacement pump (2) has a displacement volume set by an electro-hydraulic control device (10) provided with a safety function. In a fault scenario, the variable displacement pump (2) is set to a neutral position. The electro-hydraulic control device (10) has a single electro-hydraulic setpoint encoder (30) to specify the setpoint of the displacement volume of the variable displacement pump (2) and an electrically actuatable valve device (35) connected in series downstream of the setpoint encoder (30), by which the direction of displacement of the variable displacement pump (2) is controlled and which is provided with the safety function.

Abstract: A multi-stage radial turbine for usage in energy capture from fluid streams with low to moderate relative speed.

Abstract: A power turbine section for a gas turbine engine includes a heat shield assembly mounted to a bearing support to form a first annular compartment and a second annular compartment.

Abstract: In a turbine wheel, each of seal plates is formed from an elastic plate member whose radially intermediate portion is curved projecting toward one axial end surfaces of turbine blades and a turbine disk. The seal plate includes: an assembly recessed portion recessed in a direction getting closer to the one axial end surfaces, near a radially outer end of the plate; and a disassembly protrusion projecting in a direction getting away from the one axial end surfaces, near a radially inner end of the plate. When the recessed portion is pressed for attaching the plate, a tip end of the recessed portion comes into contact with the one axial end surface of each turbine blade or the disk. The plate is accordingly inhibited from being excessively deformed. Thus, the plate is blocked from being plastically deformed, and is precluded from coming off the wheel.

Abstract: A shroud sealing arrangement for a gas turbine engine, which comprises a static shroud assembly mounted to an engine case and having a platform surrounding a rotatable airfoil array. The platform has an inner side and an outer side and extends from a leading edge to a trailing edge. A shroud support structure mounts the shroud platform to the case. A circumferential groove is defined on the outer side of the shroud platform proximal to one of the leading edge and the trailing edge. A sealing ring is set in the groove and adapted to seal cooling air from escaping directly to the gas path.

Abstract: A surface structure having an overlapping herringbone filmhole pattern is disclosed. For instance, the surface structure may have filmholes arranged in filmrows, each filmrow divided into groups of filmholes. A first group may be oriented to direct cooling air generally outward over a surface of the surface structure and a second group may be oriented to direct cooling air generally inward over a surface of the surface structure. Between the first group and the second group of filmholes in each filmrow, a transition region exists. A transition region filmrow group may be disposed within the transition region and may be collinear with or staggered relative to the first group and/or the second group. In this manner, the transition region filmrow group enhances the effectiveness of the cooling proximate to the transition region.