Actuator for producing a displacement movement on a set temperat

Apparatus and method for a heat engine

Arrangement for determining the difference between differing and

Arrangement for retaining an actuating member in an extreme posi

Electro-thermal actuator system

Electro-thermal actuator with valved boiler configuration

Electro-thermal linear actuator with internal reservoir

Electrothermal actuator with latch mechanism

Energy converter machine

Engine apparatus

Engine powered by low boiling liquid

External combustion engine

Fluid pressure-responsive unit

Gravity actuated thermal motor

Gravity-actuated thermal engines

Heat pipe turbo generator

Heat pipe-turbine

Hydraulic engine

Instant return-stroke differential temperature engine

Linear actuator linkage