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7600378 |
Volume phase transition to induce gel movement
Movement of a gel structure is propagated by successively applying external stimuli to cause volume phase transition in the gel structure by alternately causing the gel structure to collapse and...
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7582109 |
Thermal transition methods and devices
A method of sequentially transitioning a thermally active shape memory device progressively translocates the thermally active shape memory device through a first controlled temperature zone and...
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7481054 |
Shape memory alloy actuator
A shape memory alloy actuator includes a housing, a plunger, a shaft, a resilient member, and a shape memory alloy component. The plunger is slidably but non-rotatably received in the housing and...
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7469538 |
Self assembling/quick assembly structure using shape memory alloy materials
A shape memory alloy material may be incorporated in an assembly structure.
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7464548 |
Shape memory alloy linear actuator
Linear actuators including coupled elongate members formed of shape memory alloys are provided. Members that lengthen when heated are coupled to members that shorten when heated such that stroke...
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7464547 |
Thermal actuators
A thermal bend actuator ( 6 ) is provided with a group of upper elongate actuator arms ( 23, 25, 26 ) and a group of lower elongate actuator arms ( 27, 28 ) which are non planar, so increasing the...
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7456698 |
Mechanical self-reciprocating oscillator and mechanism and a method for establishing and maintaining regular back and forth movement of a micromachined device without the aid of any electronic components
A mechanical self-reciprocating oscillator and mechanism and method for establishing and maintaining regular back and forth movement of a micromachined device without the aid of any electronic...
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7451596 |
Multiple degree of freedom micro electro-mechanical system positioner and actuator
A micro electro-mechanical system (MEMS) positioner, including an actuator and method for making the same, includes a stage formed within a first layer of semiconductor material, along with a...
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7451595 |
Drive device
The driving device includes a bendable shape memory alloy member, a resilient member for applying a tension to the shape memory alloy member in a longitudinal direction thereof, a bending member...
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7414512 |
Operating device, position-switching device, and magneto-optical recording/reproducing apparatus
An operating device has a pair of linear members ( 43, 44 ) made of a shape memory alloy and contracting axially due to heat generated by electrification and generating tension in the contracting...
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7372355 |
Remote controlled wall switch actuator
A device to actuate a switch. The switch has a switch toggle movable between a first position and a second position. The device includes a switch yoke movable between the first position and the...
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7367186 |
Wireless technique for microactivation
The present invention is a method and apparatus for achieving high work output per unit volume in micro-robotic actuators, and in particular TiNi actuators. Such actuators are attractive as a means...
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7350762 |
Flow control assemblies having integrally formed shape memory alloy actuators
In one embodiment of the present invention, a shape memory alloy (“SMA”)-actuated flow controller comprises a number of grille members, each having a long axis and being slideable relative to...
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7313917 |
Volume phase transition to induce gel movement
Movement of a gel structure is propagated by successively applying external stimuli to cause volume phase transition in the gel structure by alternately causing the gel structure to collapse and...
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7305824 |
Power-off hold element
A power-off hold element for operating in cooperation with an actuator is disclosed. The power-off hold element comprises a material having selectively adjustable rigidity wherein a position or...
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7301767 |
Electronic equipment including an apparatus for cooling interior of housing
An electronic equipment of the present invention includes housings and, a substrate, electronic components mounted on the substrate, a heatsink which is connected to the electronic component,...
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7299630 |
Positioning and locking mechanisms and articles that employ the same
Disclosed herein is a locking mechanism for positioning or locking an article comprising a housing 3 ; an optional active element 6 in operative communication with a connecting means 22 ,...
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7296457 |
Thermally-actuated press brake tool holder technology
The invention provides press brake technology. In more detail, the invention involves a press brake tool holder having a thermally-responsive actuator. In certain embodiments, the actuator...
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7260932 |
Shape memory alloy latching valve
A shape memory activated fluid control pinch valve is disclosed. The valve may be normally open or normally closed. In various embodiments of the valve, the valve may be a latching pinch valve and...
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7256518 |
Shape memory alloy actuators
Linear actuators comprised of a plurality of geometric links connected together in displacement multiplied fashion by a plurality of SMA wires. The links may have a trigon or chevron configuration....
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7207658 |
Printhead integrated circuit with electromechanical actuators incorporating heatsinks
A printhead integrated circuit that has an array of nozzles and corresponding micro-electromechanical actuators for ejecting ink there through. Each of the micro-electromechanical actuators having...
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7188473 |
Shape memory alloy actuator system using segmented binary control
An architecture shape memory alloy (SMA) actuators is presented called Segmented Binary Control (SBC). Instead of controlling the phase transition of the entire SMA wire as a single plant, we...
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7168249 |
Microelectrical mechanical structure (MEMS) optical modulator and optical display system
A microelectrical mechanical out-of-plane thermal buckle-beam actuator is capable of providing transverse-plane movement of shutters. The actuator includes a pair of structural anchors secured to a...
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7155911 |
Thermal bend actuator with corrugate profile
A thermal bend actuator ( 6 ) is provided with a group of upper arms ( 23, 25, 26 ) and a group of lower arms ( 27, 28 ) which are non planar, so increasing the stiffness of the arms. The arms (...
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7140391 |
Multiway valve
A multiway valve contains a housing having several inlets and outlets and a chamber. Several seats are provided and each is respectively associated with one inlet or one outlet. A closure element...
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7117673 |
Actuator for two angular degrees of freedom
An apparatus for two degree of freedom positioning a moveable structure relative to a support structure is provided. The apparatus includes a moveable structure, a support structure, a compliant...
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7104056 |
Design of ferromagnetic shape memory alloy composites and actuators incorporating such materials
The present invention employs an optimized cross-sectional shape for a ferromagnetic shape memory alloy (FSMA) composite that is used in a spring-type actuator, an improved hybrid magnetic trigger...
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7093817 |
Flow control assemblies having integrally formed shape memory alloy actuators
In one embodiment of the present invention, a shape memory alloy (“SMA”)-actuated flow controller comprises a number of grille members, each having a long axis and being slideable relative to...
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7076951 |
Discrete step rotary actuator
A discrete step rotary actuator ( 1 ) comprises a stator ( 2 ), a rotor ( 3 ) and at least an actuating element ( 10 ) made with a shape memory active material, the actuating element ( 10 ) having...
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7073332 |
Stop device with shape memory actuator
A stop device with a shape memory actuator includes two stop elements sliding within a fixed support structure and usually hold in their mutual distant position by cam means pushed through spring...
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7043910 |
Thermal actuator
An asymmetric MEMS thermal actuator device includes a base portion, typically a pair of bond pads, and an actuator element connected to the base portion by a flexure portion. The actuator element...
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7037076 |
Shape memory alloy device and control method
A preferred rotary actuator includes an actuator assembly having a torque tube formed of a shape memory alloy (SMA), a superelastic NiTinol return spring associated with the torque tube and adapted...
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7036312 |
MEMS actuators
The MEMS cantilever actuator is designed to be mounted on a substrate. The actuator comprises an elongated hot arm member having two spaced-apart portions, each provided at one end with a...
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7028474 |
Micro-electromechanical actuator with control logic circuitry
A micro-electromechanical actuator includes a substrate. An elongate actuator arm has a fixed end portion that is fast with the substrate and a free end portion that is spaced from the substrate....
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7021055 |
Shape memory alloy actuator
Actuators that employs a shape memory alloy component as the driving element include linear and rotational devices. An Intrinsic Return Means (IRM) may be imparted to the SMA actuator, thereby...
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7017345 |
High stroke, highly integrated SMA actuators
A shape memory alloy (SMA) actuator assembly is provided that includes an SMA component. The SMA component is used to impart motion in an output shaft. Also provided is a return force component...
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7013641 |
Micro-electromechanical device
A fluid ejection device includes a substrate. Nozzle chamber walls are arranged on the substrate and define a plurality of nozzle chambers. The substrate defines a plurality of fluid inlet channels...
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7007471 |
Unilateral thermal buckle beam actuator
A unilateral in-plane thermal buckle-beam microelectrical mechanical actuator is formed on a planar substrate of semiconductor material, for example. The actuator includes first and second anchors...
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6988364 |
Thermal actuator
A specially profiled wax retaining cup and piston guide are crimped together to compress a peripheral portion of a diaphragm wax seal to the extent of extruding the diaphragm material to form both...
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6983595 |
Fluid ejection device
A device is formed from an integrated circuit which comprises a substrate; drive circuitry arranged on the substrate; and a plurality of micro-electromechanical devices positioned on the substrate....
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6983594 |
Shape memory thin micro-actuator, and method for producing the same
A micro-actuator includes a shape memory thin film having one end fixed to a substrate and one remaining part which, at room temperature, is in the martensitic phase and assumes a...
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6981374 |
SMA actuator with improved temperature control
A SMA actuator having rigid members and SMA wires, in which improved temperature control of the SMA wires of the actuator is provided by a heat sink, which may be the rigid members themselves, in...
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6978613 |
Thermal bend actuator
A thermal bend actuator ( 6 ) is provided with upper arms ( 23, 25, 26 ) and lower arms ( 27, 28 ) which are non planar, so increasing the stiffness of the arms. The arms ( 23, 25, 26, 27, 28 ) may...
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6969920 |
Low current shape memory alloy devices
An SMA device in which an SMA wire actuating element is operated periodically at a low voltage by power derived from a current source current which is too low to heat the wire directly sufficiently...
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6960849 |
Three-dimensional microelectromechanical tilting platform operated by gear-driven racks
A microelectromechanical (MEM) tiltable-platform apparatus is disclosed which utilizes a light-reflective platform (i.e. a micromirror) which is supported above a substrate by flexures which can be...
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6938416 |
Aircraft with shape memory alloys for retractable landing gear
Aircraft that use a shape memory alloy to extend or retract landing gear are provided. The present invention includes aircraft that contain a first retractable landing gear and a first shape memory...
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6931892 |
Drainage control device for washing machines
A drainage control device for washing machines is disclosed. This device controls the drain port, provided at the bottom of a washing tub, thus draining water from the washing tub in accordance...
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6928812 |
SMA actuator safety mechanism
A method and apparatus for preventing the unintended activation of SMA devices by ambient temperatures that exceed the phase transition temperature of the SMA material itself. In one embodiment a...
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6915633 |
Shape memory alloy actuators for use with repetitive motion devices
Shape memory actuators for use with repetitive motion devices are provided. The present invention includes a method of urging a working end of a repetitive motion work arm into a work surface in...
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6892538 |
Apparatus for controlling exhaust attack angle for a variable turbine
An apparatus for controlling an exhaust attack angle for a variable turbine applied in a turbocharger of an engine is provided that comprises: an actuator driven according to a strength of a...
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