Various multi-stage radial turbine configurations that provide highly efficient momentum transfer between a fluid and the mechanical interface in both power producing and power consuming undertakings.

Various multi-stage radial turbine configurations that provide highly efficient momentum transfer between a fluid and the mechanical interface in both power producing and power consuming undertakings.

A machine for use in an environmental control system has a turbine impeller. A turbine inlet is connected to supply compressed air to drive the turbine impeller. There is a compressor impeller and a compressor inlet connected to supply air to be compressed to the compressor impeller. The compressor impeller delivers air to a compressor outlet. The compressor outlet is connected to the turbine inlet. A turbine outlet is connected to a first connection connected to an aircraft. The turbine impeller is connected to the compressor impeller by a drive shaft. The drive shaft includes a radially outwardly extending thrust disk, and thrust bearings provided on each of two axial sides of the thrust disk. A cooling air inlet is connected to pass air along the thrust bearings, then radially inwardly and then axially along the shaft. The cooling air is directed to a cooling air outlet. The cooling air outlet is connected to a second connection maintained separate from the first connection. An environmental control system is also disclosed.

An assembly for joining together modules of a modular wind turbine blade. According to one embodiment the assembly is formed by a plurality of bolts that are secured between pairs of first and second inserts respectively housed in the composite material of first and second modules. According to one embodiment each assembly is formed by first and second lateral caps, upper wedge and a lower wedges located between the first and second lateral caps, and transverse screws joining the upper and lower wedges that together are formed around the corresponding bolt. When a force F1 is applied to the wedges, the lateral caps respond with forces F.sub.2 that urge the first and second modules away from one another to longitudinally stress the bolt.

A surgical apparatus includes a rotatable shaft and a turbine assembly. The rotatable shaft includes a cutter located thereon. The cutter is configured to cut an object when the shaft is rotating about a rotational axis. The turbine assembly includes a turbine and a turbine housing. The turbine housing is configured to receive a fluid that enters the housing parallel to the rotational axis, and to steer the fluid to impinge on the turbine in a direction that is not parallel to the rotational axis. The turbine is configured to rotate the shaft so as to cut the object by the cutter.

A surgical apparatus includes a rotatable shaft and a turbine assembly. The rotatable shaft includes a cutter located thereon. The cutter is configured to cut an object when the shaft is rotating about a rotational axis. The turbine assembly includes a turbine and a turbine housing. The turbine housing is configured to receive a fluid that enters the housing parallel to the rotational axis, and to steer the fluid to impinge on the turbine in a direction that is not parallel to the rotational axis. The turbine is configured to rotate the shaft so as to cut the object by the cutter.

A pneumatic motor for pneumatic tools includes a cylinder provided therein with a vane wheel. A rotating shaft inserted in the vane wheel is provided with a withstanding member and a tightening member, which can push the withstanding member to move toward the vane wheel and tighten the vane wheel with the rotating shaft for avoiding gap between the vane wheel and the rotating shaft. Thus, when outside driving air pushes the vane wheel to rotate, the vane wheel can synchronously drive the rotating shaft to rotate immediately and truly. By so designing, this invention can solve the problems of the conventional pneumatic motor that is likely to cause starting delay, untrue in power transmission and easy to wear.

A pneumatic motor for pneumatic tools includes a cylinder provided therein with a vane wheel. A rotating shaft inserted in the vane wheel is provided with a withstanding member and a tightening member, which can push the withstanding member to move toward the vane wheel and tighten the vane wheel with the rotating shaft for avoiding gap between the vane wheel and the rotating shaft. Thus, when outside driving air pushes the vane wheel to rotate, the vane wheel can synchronously drive the rotating shaft to rotate immediately and truly. By so designing, this invention can solve the problems of the conventional pneumatic motor that is likely to cause starting delay, untrue in power transmission and easy to wear.

A control valve for a fluid flow includes: a valve body that defines an inlet and an outlet for the fluid, an obstructer inserted in the valve body, and an actuator system configured for reversibly translating the obstructer between a first position, in which the obstructer allows the passage of the fluid between the inlet and the outlet, and a second position, in which the obstructer prevents the passage of the fluid between the inlet and the outlet; the control valve further includes a turbine rotor housed inside the valve body, wherein the rotor includes a plurality of blades and is configured for continuously rotating under the action of the fluid flowing between the inlet and the outlet, the rotor rotating about an axis of rotation substantially aligned with the direction of translation of the obstructer.

The purpose of the present invention is to minimize fluid leakage and pressure leakage, and a turbine apparatus of the present invention comprises: a turbine (510) rotating together with a turbine shaft (513) in response to an inflow of fluid; a turbine cover (520) coupled to an upper end of the turbine (510) to seal the turbine (510); a lower nozzle plate (350) and an upper nozzle plate (370) coupled to each other in the turbine (510); a plurality of nozzles (380) coupled between the lower nozzle plate (350) and the upper nozzle plate (370) to control the amount of fluid flowing into the turbine (510); a through pipe (356) coupled to the center of an upper surface of the lower nozzle plate (350) and passing through the lower nozzle plate (350) and the upper nozzle plate (370); and a control pipe (322) rotating inside the through pipe (356) for opening and closing the nozzles (380).