A shape memory material element configuration including a shape memory material element, and a capillary line extending to the element and positioned to apply an activation fluid to the element.

A biological engine is configured to transfer mechanical energy from a biological actuator. The biological engine has an enclosure containing a biological feedstock. A cylinder opening is arranged on a bottom side of the enclosure. A turbine hole is arranged on the bottom side of the enclosure. A turbine is arranged in the turbine hole with a turbine seal. A crankshaft assembly has a crankshaft joined to the turbine. A piston is joined to the crankshaft assembly. A cylinder surrounds the piston and connected to the cylinder opening. A biological actuator joins the piston and a cylinder head with an artificial tendon. An electrode pad touches the biological actuator and connected to a current source with a wire and an electrode connector. Electrical current from the current sources causes the biological actuator to expand and contract, moving the piston, turning the crankshaft and transferring the mechanical energy.

A thermobimetal heat driven turbine having a rotor, and a series of vanes extending from the rotor wherein the vanes comprise two or more separate materials laminated together, said two separate materials having different coefficients of expansion whereby exposure to a heat source causes the two separate materials to expand at different rates thereby re-shaping the vanes to drive the rotor. The rotating turbine is thus able to generate power using direct heat from an energy source. The heat source may be radiant, convection and/or conduction type heat.

A capillary action propulsion system includes an absorbent material, at least one compression member, and a fluid. The absorbent material forms an endless path. At least one compression member compresses a portion of the absorbent material at a compression location. A fluid is disposed within the absorbent material in an unequal distribution with a first side of the absorbent material having more fluid than a second side. The absorbent material is configured to continuously rotate due to the at least one compression member compressing the portion of the absorbent material at the compression location causing the fluid to continuously remain unequally distributed within the absorbent material creating a weight imbalance in the absorbent material and a resulting moment. The fluid is configured to continuously rise, due to capillary action, within the absorbent material along the endless path from the compression location on the first side of the absorbent material.

A system manages the reactions of fluids to their changes in their environment in order to convert these reactions into energy thereby harvesting the same while protecting the device against destruction or malfunction when the environmental conditions exceed predefined thresholds.

A compressed air generation system that provides compressed air for a variety of applications including generation of electricity. The a system for accumulating and storing compressed air that is later used for a variety of applications including energy generation. The system uses mechanical air pumps that are activated when vehicles, including cars and buses, pass over air pumps imbedded in the road surface. Alternative embodiments use air compression pumps to store compressed air when the moving vehicles, such as trains, pass over railroad ties. The compressed air is fed into air accumulators that are used to produce clean electrical energy.

In an example, an engine includes a thermal expansion unit comprising expansion material that expands in response to a temperature increase of the expansion material and contracts in response to a temperature decrease of the expansion material. The engine includes a structure comprising a heat receiving region, wherein at least a portion of the thermal expansion unit is disposed within the structure. The heat receiving region is configured to transfer thermal energy from a source of thermal energy to the expansion material through a first thermal energy transference path. The transfer of thermal energy to the thermal expansion unit causes expansion of the expansion material within the thermal expansion unit. The expansion of the expansion material causes an increase in length of the thermal expansion unit. The increase in length of the thermal expansion unit causes establishment of a second thermal energy transference path through which thermal energy is transferred from the expansion material to outside the thermal expansion unit.

Shape memory actuators may be used in unmanned aerial vehicles to control various components. For example, shape memory actuators may adjust cant angles of motors, propellers, and other propulsion mechanisms. In addition, shape memory actuators may adjust positions or orientations of various other components of unmanned aerial vehicles, including wings, control surfaces, motor arms, frame sections, payload doors, and landing gears. The shape memory actuators may be formed of various shape memory materials, may be one-way or two-way shape memory actuators, and may change their configurations responsive to heat and/or magnetic fields.

An energy-recovery device comprises an engine, an immersion chamber, a drive, and a power module. The engine comprises a core comprising a core element that comprises working material, the core element comprising a fixed first end and a second end that is connected to the drive. The immersion chamber houses the engine and is configured to be sequentially filled with fluid to expand and contract the core element. The power module applies a controlled stress to the core element during at least one of a heating phase and a cooling phase of a power cycle carried out by the engine.

A vehicle headrest assembly includes a latch mechanism moveable between an engaged position and a release position. The vehicle headrest assembly also includes a shape memory alloy (SMA) release assembly operatively coupled to the latch mechanism to selectively move the latch mechanism from the engaged position to the release position. The SMA release assembly includes an actuator base including a pair of tracks defining a slot, the actuator base including a plurality of retaining tabs. The SMA release assembly also includes a printed circuit board (PCB) retained directly to the actuator base and disposed adjacent the plurality of retaining tabs. The SMA release assembly further includes a slide disposed within the slot and retained to the actuator base with the pair of tracks. The slide is moveable to contact and bias the latch mechanism to the release position upon energization and contraction of a SMA wire.