A sectionalized turbine wheel mounted for rotation about a vertical axis and having a plurality of turbine blades mounted to its circumference. There is an outer circumferential feeder pipe surrounding a distribution pipe that defines a distribution chamber, which in turn leads through a plurality of vane assemblies to the turbine blades. The turbine blades are substantially enclosed in a housing structure which provides an annular downward opening. Water under pressure flows into the feeder pip...

A dual integrated electro hydraulic actuator package for remotely controlling the position of an aircraft control surface has both its input power and its input command signals supplied solely by wires from remote locations. The package encloses two complete and separate hydraulic actuators mechanically connected together to drive a load and includes duplicate sets of electro hydraulic drive components and electro hydraulic control components, one for each actuator. The load on the actuators is ...

A stand-alone power stacker for envelopes and similar type planar articles is provided wherein two end to end arcuately adjustable belt conveyors are adapted to be driven at automatically varying relative speeds depending on load conditions. The machine drive motor is controlled by a sensing means that detects the presence of each envelope that is delivered to the upstream end of the stacker and a time delay control circuit is provided to delay a termination of operation of said motor for a sele...

A power belt which comprises a belt member adapted to be secured around the waist of a person using the belt, and a plurality of pockets carried by the belt member. Electrical cells are contained in all but one of these pockets and are series connected. The remaining pocket contains an inverter unit to which the cells are connected, whereby an a.c. output is obtained. Further, the inverter unit is removably fitted to a connector unit in the pocket, by way of a push-in coupling designed to allow ...

A prime source of mechanical power comprising an expansion chamber, an inlet into which expansible fluid is injected, and an outlet through which the fluid is exhausted after expansion in chamber. Expansion of fluid is achieved by application of a heat source directly to the expansion chamber, which expansion acts through a piston to create useful mechanical motion. The prime source of mechanical power preferably includes an expansion chamber having three laterally adjacent portions, with one po...

Disclosed herein is a power rake comprising a housing supported by front and rear wheels for travel over the ground and including a top wall and spaced side walls, a handle extending from the housing and including a portion adapted to be gripped by an operator to propel and guide the rake over the ground, a thatching reel including a plurality of thatching blades and supported in the housing for rotation of the blades in respective vertical paths, a drive for rotating the reel so that, adjacent ...

The invention is concerned with a submersible power generator for converting the energy of deep ocean currents, tidal flows, river channel currents and the like to more usable forms of power such as electricity. The generator comprises a rotor having a plurality of horizontally radiating spokes mounted in common on a rotatable vertical shaft to drive the same. Each spoke has a hinged impeller blade which by its automatic positioning relative to its spoke maximizes the surface area of the blade a...

A power transmission includes a chambered housing having a horizontal axis with a rotatable crankshaft disposed therethrough and outwardly of the housing independently mounted upon a suitable support. A pair of diametrically opposed piston rods on said crankshaft slidably mount non-rotatively a pair of pistons which are yieldably biased outwardly. Cam rollers on said pistons bear against a continuous cam bore within said housing. Said bore includes a circular portion of maximum radius throughout...

A directional valve for hydraulic power transmission systems of the closed center type has a spool for directing fluid from inlet to either of two motor ports through one or the other of a pair of check valves for holding the load against dropping. A second pair of check valves connect from each motor port directly to a fluid return port independently of the spool. The second check valves have control chambers the maximum pressure in which is limited by a pilot relief valve to cause the check va...

A directional valve for hydraulic power transmission systems of the closed center type has a spool for directing fluid from inlet to either of two motor ports through one or the other of a pair of check valves for holding the load against dropping. A second pair of check valves connect from each motor port directly to a fluid return port independently of the spool. The second check valves have control chambers the maximum pressure in which is limited by a pilot relief valve to cause the check va...