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Sperry Corporation

Sperry Rand Corporation

Anthony P Nardi

Richard L Earle

Joannes N De Jong

William H Kent

A positive displacement single expansion steam expander engine. Cylinder heads are fixed to the wall of the engine. A rotatable power shaft assembly has a plurality of nests. Received in each of the nests is a free-floating piston (nonengaged) having lobes which allows free movement of the pistons in the nests.

Pressure articulated positive displacement, single expansion rotary engine

Rotary expander

In a flapper nozzle actuator system a radial outward flow turbine like flapper is used as the flapper. The angular velocity of the turboflapper is used to lift the turboflapper off a backplate towards a nozzle. The amount of lift off the backplate and hence nozzle outlet area is a function of the angular velocity of the turboflapper. An adjustable opposing torque on the turboflapper controls the angular velocity of the turboflapper and thus controls the flow rate.

Turboflapper nozzle systems

For use in transmitting acoustic waves propated along a well drilling string, a piezoelectric transducer is provided operating in the relatively low loss acoustic propagation range of the well drilling string. The efficiently coupled transmitting transducer incorporates a mass-spring-piezoelectric transmitter combination permitting a resonant operation in the desired low frequency range.

Resonant acoustic transducer system for a well drilling string

The operation of a geothermal well power-generationsystem is monitored by sensor, communication, and performance monitoring equipment normally associated integrally with the operating power generation system. Sensors detect magnitudes of well water temperature, of water pressure below and above the pump, and of other parameters of interest deep in the well. This data is transmitted by multiplex communication via a novel two-wire line telemetric system to receiver and utilization means at the earth's surface. Power for excitation of deep well monitor units is supplied from the earth's surface also by the two-wire telemetric system. A configuration involving a mechanically separable transformer disposed serially within the two-wire line aids installation of the monitor system and its removal in the rare event that it is required to remove the entire pump from its operating deep well site.

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Burlington, MA, United States of America

Anthony P Nardi