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4086769 |
Compound memory engine
A mechanism for transforming heat energy into mechanical energy capable of tilizing heat from low temperature sources such as solar heated water, geothermal hot water and rejected heat from...
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4075845 |
Freeze/thaw power system
A method and apparatus using a FREEZE/THAW POWER CYCLE. The apparatus includes a piston driven by the expansion power of a fluid such as water in a cyclinder on freezing and the thawing thereof...
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4075847 |
Direct conversion of solar energy to mechanical energy
Disclosed is a method and means for direct conversion of solar energy to mechanical energy through alternate warming and cooling of material consisting of highly aligned, high density polymer...
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4075846 |
Thermal engine with entrapped working medium
A thermal engine with entrapped working medium is a device with a principle element in the form of a continuous yieldable belt whose tension and length are responsive to temperature due to the...
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4055954 |
Damper actuator for a ventilation system
A damper actuator for use in a ventilation system typically used in an air conditioning system to activate the damper or damper assembly in response to an electrical signal. More particularly, a...
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4055956 |
High torque solar motor
A frame having two or more thin elongate vanes mounted thereon and a shaft for supporting the frame for rotation so that each of the two opposite surfaces of the vanes is sequentially exposed to...
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4055955 |
Memory alloy heat engine and method of operation
A heat engine and method of operation employing an alloy having a shape memory effect. A memory alloy element such as one or more wire loops are cyclically moved through a heat source, along a path...
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4043532 |
Valve with electrically operated actuator
An electrically operated valve having a valve body in which a valve member is mounted for movement to an open or closed position, an operating assembly being removably mounted on the body and...
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4041706 |
Linear force generator and heat engine embodying same
A heat powered linear force generator and a heat engine embodying a plurality of the force generators for driving a rotary output shaft. The linear output force of the force generator is a periodic...
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4037411 |
Thermal energy converting assembly
A thermal energy converting assembly including a support housing rotatably supporting a central hub with a plurality of temperature sensitive metal alloy strips extending radially from the hub for...
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4036433 |
Thermally operated control device and method of making the same
A thermally operated control device having a housing provided with a chamber divided into two sections by a flexible diaphragm and with thermally expansible material filling one of the sections to...
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4031704 |
Thermal engine system
A thermal engine system is characterized by a cylinder having a suitable working fluid disposed therein and having a piston reciprocally movable in first and second directions within the cylinder,...
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4030298 |
Thermal motor
This invention relates to apparatus for the conversion of thermal energy into mechanical motion. Transducers, such as nickel-titanium alloys, are employed which change their configuration and...
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4027479 |
Variable density heat engine
A heat engine employs an endless belt including a number of discrete elements which will interact with a force field, and are interconnected by a shape memory material, such as Nitinol. Two...
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4016722 |
Safety blow-out protection for fluid actuators
Excessive pressure is relieved in a fluid actuator by controlled destruction of an internal extensible diaphragm without damage to the exterior structural integrity of the actuator. Upon occurrence...
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4010455 |
Cyclical bi-directional rotary actuator
A thermally powered rotary actuator is disclosed which is used for positioning a shaft in first and second positions which are disposed 180° apart. A pair of heat extensible springs are attached...
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4006594 |
Solar power plant
A solar power plant having a means for collecting solar heat and a means for applying the heat so collected to a selected portion of a plurality of expansile-contractile members movably mounted...
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3994132 |
Apparatus for converting heat energy to mechanical energy
Apparatus for converting heat derived from a heated fluid into mechanical energy comprising a double-walled shell having a high coefficient of thermal expansion and other preferred qualities, such...
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3989417 |
Apparatus for converting solar energy into mechanical energy
An apparatus for producing mechanical energy utilizing the sun's rays is disclosed. The apparatus includes a continuously rotating structure having a plurality of thermally actuated pump units,...
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3987630 |
Mechanical thermal motor
An apparatus is provided for converting thermal energy such as solar energy into mechanical motion for driving fluid pumps and the like. The thermal motor comprises an inner concentric cylinder...
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3986354 |
Method and apparatus for recovering low-temperature industrial and solar waste heat energy previously dissipated to ambient
A method and apparatus are described for recovering useful amounts of low-temperature industrial and solar waste heat energy previously dissipated to ambient. The low-temperature heat energy is...
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3968692 |
Thermostatic expansible material-working element
A thermostatic expansible material-working element with a housing filled with the material and a pin-shaped work piston which is pointed at one end. The work piston with its pointed end extends...
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3953973 |
Heat engine and heat pump utilizing a working medium undergoing solidification and melting operations
The present invention introduces a heat engine, or a heat pump, in which the working medium used is subjected alternatively to solidification and melting operations. A working medium so used is...
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3937019 |
Thermal engine
A machine is constructed from plural elongated elements constructed as tubes or rods with double duct and which are alternatingly cooled and heated past a transition temperature, whereby...
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3908378 |
Fluid pressure responsive device
A fluid pressure responsive device, such as a device sensing the thermal expansion or contraction of a fluid, has a movable member biased by a spring against the pressure of the fluid. The spring...
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3905228 |
Mechanical heat flux recorder
A mechanical heat flux recorder is provided which is based upon the shape covery properties of a nickel-titanium alloy (NiTi). A pair of nickel-titanium strips are connected between a heat sink...
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3860169 |
AMBIENT TEMPERATURE CONTROL SYSTEM
A system for controlling ambient temperature having a valve that adjusts the amount of fluid flow is disclosed. The valve includes a chamber containing thermal-expansive material and a piston which...
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3841551 |
THERMO-OPERATION TYPE TRANSFER VALVE
A transfer valve operative in response to variation in temperature at two predetermined setting points includes a valve member slidable in a valve passage which is provided with an output passage...
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3830060 |
SOLID MEDIUM THERMAL ENGINE
A thermal engine apparatus including an elongated cylindrical tube of metal providing a single phase working substance supported to rotate freely about its longitudinal axis while being subjected...
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3823560 |
METHOD AND APPARATUS FOR OBTAINING ENERGY FROM TEMPERATURE CHANGES
This invention relates to the conversion of temperature changes into energy. In the present invention, there is confined within a sealed chamber a temperature responsive composition comprising a...
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3803845 |
THERMAL ENGINE
A thermal engine having a pair of levers defining the sides of a triangle, the levers being connected together at their top-ends to define the apex of the triangle, and the levers attached at the...
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3798896 |
OPTICALLY ACTUATED TWO POSITION MECHANICAL MOVER
An optically actuated mechanical mover adapted to be moved from an ambient position to an active position, is disclosed. The mechanical mover essentially comprises a piston/cylinder arrangement...
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3793837 |
WAX ELEMENT DIAPHRAGM AND SEAL
The flanged end of the plunger guide which fits into the enlarged end of the wax element cup has a chamfer which seats against the internal shoulder when the clamping is completed. Inside the...
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3782121 |
ACTUATOR APPARATUS
An actuator for converting electrical energy into linear mechanical movement comprises a chamber containing an expandable material and a positive temperature coefficient (PTC) of resistance heater...
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3766803 |
VALVE OPERATOR WITH EXPLOSIVE CARTRIDGE
A valve operator incorporates an explosive actuator which includes an elongated twisted steel tube, for emergency use in, for example, closing a valve quickly. When the emergency arises, the...
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3760645 |
CHEMICAL TO MECHANICAL ENERGY CONVERTER
A contractile polymer member is immersed in a denaturing medium. Means is provided to alternately increase and decrease the concentration of that portion of the medium which is in the neighborhood...
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3756083 |
THERMALLY OPERATED ACTUATOR DEVICE
A thermally operated actuator device which is capable of operating an external instrument operatively connected with said actuator device in response to changes in temperature of a medium to which...
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3754151 |
THERMAL MOTOR AND GENERATOR
A thermal motor with an elongated housing, rotatably mounted on a transverse axis, defining a channel for reciprocating longitudinal motion within the housing of a coaxially supported bar and...
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3721125 |
THERMAL ACTUATOR FOR A METER TEMPERATURE COMPENSATING MECHANISM
A thermal actuator for a meter temperature compensating mechanism which includes a casing mounted in the meter housing within a temperature well so as to be exposed to the mainstream of throughput...
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3719085 |
THERMAL POWER ELEMENT
A thermal power element is constructed of a pair of generally hollow casing members with a thermally responsive charge in one casing member and with a sealed plunger protruding from the other...
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3712052 |
THERMAL ACTUATOR WITH CAPTIVE PISTON SHAFT AND SPECIAL SEAL
A thermal actuator comprising a pressure chamber, expansible material responsive to heat in the chamber, and a piston shaft driven by the expansible material, the shaft being slidable in a bearing...
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3703693 |
LIQUID LEVEL SENSING SYSTEM
For detecting a level of a liquid in a container, an element is mounted in a container so as to extend along an area corresponding to the location where liquid depth is to be detected. That element...
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3699769 |
TEMPERATURE CHANGE ACTUATED MOTOR
A battery of side-by-side tubes constructed of a material having a high coefficient of expansion is provided and one set of ends of the tubes are stationarily supported from a suitable base. A...
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3696611 |
THERMAL MOTORS
An electrical-to-thermal-to-mechanical power translating device comprising a mass of solid-to-liquid expansion material packed into a piston-cylinder chamber and heated electrically by a positive...
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3665705 |
THERMAL ENGINES
A thermal engine capable of converting heat directly into rotary motion and having only one prime moving part. A cylindrical rotor member is rotatably supported between trunnioned bearings so that...
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3613732 |
TEMPERATURE-RESPONSIVE VALVE OPERATORS
Temperature-responsive valve operators including a control member controlling the position of a valve member and constructed of a material having a temperature-actuated shape memory, the control...
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3574275 |
THERMALLY ACTUATED MOTOR WITH AUTOMATICALLY RETURNABLE SHAFT
A thermally actuated motor provided with an axially reciprocable, automatically returnable shaft, comprising a differential diameter shaft having a radially extending flange between its larger and...
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3540479 |
HEAT MOTOR AND VALVE
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3537678 |
THERMAL MOTOR ACTUATED VALVES
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3505809 |
THERMAL MOTOR
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