Matches 201 - 250 out of 455 < 1 2 3 4 5 6 7 8 9 10 >
Match Document Document Title
4759187 Wire engine  
The reciprocating motion that is provided when long arrays of wires of shape memory metal alloys are made to repeatedly change in length by means of repeated temperature alternations is made to...
4751821 Digital linear actuator  
A digital linear actuator includes a plurality of digital actuator cells each connected to the next in sequential fashion. Each of the digital actuator cells contracts or expands a predetermined...
4742680 Antiballistic missile targeter  
A cylinder with one end convex, upon said end a disk with a hole in it sits upon it to act as a pivoting mounting plate; stretched nitinol wires are strung down the sides of the cylinder from the...
4716731 Actuator of shape memory effect material  
An actuator made of a material having a shape memory effect includes a plurality of materials having a shape memory effect and a heat insulator member. The plurality of materials having a shape...
4700541 Shape memory alloy actuator  
An electrically controlled shape memory alloy actuator capable of being miniaturized for use in robotics and other fields. The actuator is made of a shape memory alloy wire which is torsioned end...
4699235 Linear actuator control system for split axle drive mechanism  
A control system for automatically operating the clutch in a single clutch split axle mechanism responsive to an operational mode of a transfer case in a part-time four-wheel drive vehicle...
4691516 Thermally-activated device for creating considerable power  
A thermal actuator is provided in which a thermally expansible material such as a high melting point wax is heated to produce linear movement of an actuator element. A secondary chamber containing...
4691518 Vertically oscillating heat engine  
A simple nitinol wire powered engine employing a four bar linkage which oscillates the nitinol wire in a vertical plane into and out of a pair of aligned different temperature baths.
4691517 Laterally oscillating nitinol engine  
A simple nitinol wire powered engine which employs a pair of interconnected drive members which oscillate in a horizontal plane about two different axes of rotation.
4685651 Thermostatic control devices  
A capsule of a thermic control device contains a substance which expands when heated by an electrical resistor to displace a piston. Devices are disclosed wherein the capsule is disposed...
4683721 Twin-crank type heat engine  
A heat engine is provided with twin crankshafts and coil shaped power elements mounted between each of two crankshafts. Each power element moves upward and downward, parallel with the surface of a...
4684913 Slider lifter  
A slider lifter including a support structure, a flexure arm and a resilient means cantilevered from the support structure, and a shape memory alloy element operatively connected between the...
4646523 Wire engine for water pumps  
Mechanical energy is provided in the form of continuous reciprocating motion by causing repeated temperature alternations in wire arrays made of alloys of shape memory metals when alternating...
4638828 Water temperature actuated drip valve  
An automatically operated valve to prevent freezing of water lines. The valve is elongated, having threads on one end to be received in a conventional plumbing tee or the like, or in a threaded...
4612768 Tide activated generator  
Apparatus for mechanical storage of energy derived from the rotation of a first shaft and for driving a rotatable main shaft associated with a power generator comprising, in combination, means for...
4598550 Radiant heat engine  
An engine powered by radiant thermal energy wherein elongated thermally expandable members are tensioned radially out from a centrally located floating bearing to which the converging ends of the...
4586335 Actuator  
An actuator including a plurality of shape memory materials used as a drive source. The plurality of the shape memory materials being arranged in parallel between a stationary member and a movable...
4567549 Automatic takeup and overload protection device for shape memory metal actuator  
A device to provide overload protection for a shape memory metal (SMM) wire of an SMM-type actuator and to automatically compensate for cyclic creep and maintain the tension of the SMM wire. During...
4563876 Linear output nitinol engine  
A linear output heat engine for developing energy from elements of nitinol wire. The wires are secured between parallel linkage levers which are reciprocated between hot and cold fluid baths...
4559512 Self-protecting and conditioning memory metal actuator  
A shape-memory-effect actuator is provided having a shape-memory-alloy spring and a compensator spring. The alloy spring is operatively connected to a concentrically-mounted compensator spring by...
4556050 Artificial sphincter including a shape memory member  
An artificial sphincter includes an implantable clamp which selectively pinches closed or opens a vessel in a living body. The clamp includes a spring member and a shape memory member that has a...
4556934 Shape memory metal actuator  
A shape memory metal (SMM) actuator includes an SMM actuator element mounted to an end fitting. An end portion of the actuator element adjacent the end fitting is cold formed to a thickness no more...
4556935 Adjustable shape memory metal actuator  
A shape memory metal actuator includes an actuator element that is secured at one end to an end fitting which is in turn secured to an overload protection spring. An adjustable screw is mounted to...
4553393 Memory metal actuator  
A mechanical actuator can be constructed by employing a plurality of memory metal actuator elements in parallel to control the amount of actuating force. In order to facilitate direct control by...
4551974 Shape memory effect actuator and methods of assembling and operating therefor  
Disclosed is a shape memory effect actuator. The actuator comprises a biasing means which is normally biased in a first position and a shape memory alloy actuator element cooperatively engaged with...
4541735 Thermal sensing element using methanol saturated fluorocarbon elastomer as the heat responsive material  
A thermal sensing element containing a heat responsive material having a very high negative coefficient of thermal expansion. The heat responsive material contained therein is a methanol saturated...
4541448 Freeze protection valve with metal to plastic fitting design  
The freeze protection valve includes a molded plastic valve housing (A) including a peripheral wall (10) which defines an elongated recess (12) therein. The valve housing includes a first seating...
4538633 Optical-hydraulic control system  
An optical hydraulic control wherein the flow of hydraulic fluid is controlled by movement of a valve spool 12. Movement of the valve spool is initiated by a hydraulic pressure differential that is...
4530208 Fluid circulating system  
A fluid circulating system includes a thermal differential engine having a pair of expansion-contraction vessels each containing an expansion component expansible with heat for discharging fluid to...
4524343 Self-regulated actuator  
A self-regulated actuator is disclosed having a shape-memory element which is heated preferably by passing electrical current therethrough and having a reset mechanism including a circuit-breaking...
4523605 Freeze preventing valve  
A freeze preventing valve which comprises a valve cage body longitudinally provided with a cylindrical guide at the upper part thereof in a valve housing connected to a steam feed pipe, a valve...
4507921 Thermostatic sensor and method of making same  
Thermostatic sensor for controlling radiator valves either directly or by remote control, comprising a cup-like metallic vessel (1) with a compressible plastic bellows (3) and a means (6) for...
4503675 Fail-safe actuator with fusible link  
An apparatus for moving a controlled member, as for example a valve, to a predetermined position in response to temperature conditions includes a bearing member which overcomes a force exerted by...
4503676 Apparatus for directly converting thermal to rotational energy  
Apparatus for directly converting thermal energy into rotational movement. A long shaft relative to its cross-section and made of an elastic material with a high thermal coefficient of expansion is...
4490976 Two-way shape memory alloy heat engine  
A two-way shape memory alloy, a method of training a shape memory alloy, and a heat engine employing the two-way shape memory alloy to do external work during both heating and cooling phases. The...
4476067 Device for controlling the operation of a carburetor  
A device for controlling the operation of a carburetor comprising a wax valve fitted into a bore formed in the device housing. A wax valve holder is fitted into the bore so as to surround the...
4472939 Energy conversion system  
A thermal-mechanical energy converting device including a fixed cylinder, a frame mounted to co-axially rotate about the fixed cylinder, at least one wheel rotatably support on the frame, and...
4472113 Pumping by martensitic transformation utilization  
Pumping in oil wells and like power conversion applications is carried out in an economical manner with efficient utilization of energy and low capital cost by pushing or pulling the plunger...
4463560 Thermal actuator apparatus  
Thermal actuator apparatus for controlling or adjusting the position of a surface or other object as a function of temperature. The principle of operation is the rate of change, as a function of...
4460006 Freeze protection valve  
The freeze protection valve includes a valve housing (A) which has a bore (20) through a lower wall portion (22) thereof to define a freeze drain outlet (B). A valve assembly (C) including a valve...
4450686 Single wire nitinol engine  
A simple single wire nitinol engine including a pair of levers, one of which reciprocates with respect to the other and is connected to a crank shaft by a connecting rod to transmit rotational...
4448147 Temperature responsive warning device  
A warning device for indicating a predetermined temperature level of a solid object includes inner and outer concentric telescoping tubes having outer surfaces of different and contrasting...
4441318 Method and apparatus for obtaining work from heat energy  
The present invention provides a method of obtaining mechanical work from heat energy comprising heating a body of metal or metal alloy confined within a pressure vessel having a coefficient of...
4441317 Piston and cylinder type thermal device part therefor and methods of making the same  
A piston and cylinder type thermal device and method of making the same are provided, the device having a cylinder member carrying a piston stem that has an outer end that projects out of the...
4439987 Prime mover operated by the expansion and contraction of a tubular metal member of substantial length  
A prime mover has a tubular metal member of substantial length which, when both its exterior and its interior are subjected to a heating and cooling cycle, produces work strokes of substantial...
4439111 Solar pumping installation for pumping liquid and solar collector construction  
A solar pumping system, comprises, a pumping housing which defines a pump chamber therein which is adapted to be positioned in the ground below ground water level. Displacer means in the form of,...
4434618 Engine construction  
An engine has at least two piston-cylinder assemblies each comprising a cylinder formed in an engine block with a cylinder head and a piston therein in sliding relationship toward and away from the...
4431603 Self-actuated device  
A self-actuated device, of particular use as a valve or an orifice for nuclear reactor fuel and blanket assemblies, in which a gas produced by a neutron induced nuclear reaction gradually...
4431951 Resistance thermal unit for thermal electric energy demand meter  
A resistance thermal unit for a thermal electric energy demand meter responsive to a variable electric quantity characterized by a dielectric housing having a pair of opposed chambers for...
4429624 Stirring arrangement  
This arrangement provides the stirring of the contents of a container. The motive force for the stirring action is supplied by connection of the stirring means to a selected pulley shaft of a...
Matches 201 - 250 out of 455 < 1 2 3 4 5 6 7 8 9 10 >