Solar differential temperature motor
Solenoid operated check valve
Space reversible differential temperature engine
Spindle drive with expansible chamber motors
System for producing work using a small temperature differential
Temperature responsive actuating device
Thermal actuator
Thermal actuator, method of controlling such and actuating syste
Thermal energy differential power conversion apparatus
Thermal fluid displacement actuator
Thermal servo-motor, particularly for valves
Thermally responsive power elements with multiple vapor/gas fill
Thermochemical/mechanical actuator
Thermostatic assembly
Thermostatic servo-motor, particularly for valves
Vapor stirling heat machine