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| Number | Title | Issue Date |
| 8446080 | Ferroeletret multilayer composite and method for producing a ferroelectret multilayer composite with parallel tubular channels The present invention relates to a ferroelectret multi-layer composite (1) comprising at least two polymer films arranged one on top of the other and bonded together, wherein voids are formed between the polymer films, said voids being tubular channels, parti... | 05/21/2013 |
| 8373335 | Actuator element and use of same Actuator elements can be used for mechatronic, adaptive applications under the most varied conditions of use. These actuator elements have improved properties and can be manufactured inexpensively. The actuator elements are formed with at least one dielectric separa... | 02/12/2013 |
| 8310138 | Actuator An actuator includes an ion-conductive polymer layer made of a first ion-conductive polymer, a pair of electrode layers provided one on each side of the ion-conductive polymer layer and made of a second ion-conductive polymer and conductive powder, and ions containe... | 11/13/2012 |
| 8183751 | Piezoelectric element and audio device A piezoelectric element including a plurality of stacked piezoelectric sheets, wherein the stretching axis of a first piezoelectric sheet and the stretching axis of a second piezoelectric sheet of the plurality of piezoelectric sheets are oriented in different direc... | 05/22/2012 |
| 7982375 | Integrated actuator sensor structure An integrated sensory actuator (10) which uses an electroactive polymer is provided. The sensory actuator is comprised of an actuating member (12) made of an ionic polymer-metal composite; a sensing member (14) made of a piezoelectric material; ... | 07/19/2011 |
| 7956520 | Electroactive nanostructured polymers as tunable organic actuators An actuator element formed from an actuator composition is described, along with transducers including the same. The composition comprises: (i) a thermoplastic elastomer copolymer, the copolymer comprising at least one flexible midblock, and at least two glassy or s... | 06/07/2011 |
| 7919910 | Medical balloon incorporating electroactive polymer and methods of making and using the same An expandable medical balloon having at least one static state, at least one expanded state, and at least one deflated state, the expandable medical balloon including at least one active region, the at least one active region including electroactive polymer. ... | 04/05/2011 |
| 7906891 | Light control of an electronic device The invention is directed towards an electronic device including at least one electro active polymer element. The at least one electro active polymer element includes an electrode. The at least one electro active polymer element is configured to change volume when a... | 03/15/2011 |
| 7898159 | Compliant electroactive polymer transducers for sonic applications Described herein are compliant electroactive polymer transducers for use in acoustic applications. A compliant electroactive polymer transducer includes a compliant electroactive polymer at least two electrodes. For sound production, circuitry in electrical communic... | 03/01/2011 |
| 7834527 | Dielectric elastomer fiber transducers Disclosed are electroactive polymer fibers, processes of preparing electroactive polymer fibers, and devices containing electroactive polymer fibers. Devices can be used as actuators and sensors, generators and transducers. Applications include inter alia artificial... | 11/16/2010 |
| 7777399 | Medical balloon incorporating electroactive polymer and methods of making and using the same An expandable medical balloon having at least one static state, at least one expanded state, and at least one deflated state, the expandable medical balloon including at least one active region, the at least one active region including electroactive polymer. ... | 08/17/2010 |
| 7733000 | Electrically conductive polymer actuator, and method for manufacturing the same To improve adhesive properties between an electrically conductive polymer membrane and a solid electrolyte membrane to each other, and thus to ensure the operation of an electrically conductive polymer actuator which effects a bending motion is aimed. The ben... | 06/08/2010 |
| 7626319 | Three-dimensional electroactive polymer actuated devices Devices employing electroactive polymer actuators are disclosed. Acrylic dielectric material based actuators are optionally provided in which architectures are presented that allow for improved power output as compared with other known acrylic dielectric material ba... | 12/01/2009 |
| 7608989 | Compliant electroactive polymer transducers for sonic applications Described herein are compliant electroactive polymer transducers for use in acoustic applications. A compliant electroactive polymer transducer includes a compliant electroactive polymer at least two electrodes. For sound production, circuitry in electrical communic... | 10/27/2009 |
| 7521847 | High-performance electroactive polymer transducers Transducers employing electroactive polymer films are disclosed. ... | 04/21/2009 |
| 7498729 | Optical device An optical device includes a lens holder that holds a lens and is movable in the optical-axis direction of the lens, and an actuator that moves the lens holder in the optical-axis direction. The actuator includes an actuator element composed of an electroactive poly... | 03/03/2009 |
| 7474041 | System and method for design and fabrication of a high frequency transducer Techniques for fabricating high frequency ultrasound transducers are provided herein. In one embodiment, the fabrication includes depositing a copperclad polyimide film, a layer of epoxy on the copperclad polyimide film, and a polyvinylidene fluoride film on the epo... | 01/06/2009 |
| 7443075 | Entrapment detecting system An entrapment detecting system includes a detection portion provided at an opening/closing apparatus for detecting an acceleration thereof on the basis of an output from a piezoelectric sensor for outputting a voltage corresponding to the acceleration and a control ... | 10/28/2008 |
| 7443082 | Piezoelectric polymer composite article and system The subject invention provides composite articles (20, 120) and associated systems (32, 132). A first composite article (20) includes a piezoelectric layer (22) having a piezoelectric property. The piezoelectric layer (22) is sandw... | 10/28/2008 |
| 7443087 | Polymer actuator A polymer actuator comprising a conductive powder compact comprising a conductive polymer and a dopant, an ion donor, a work electrode, and a counter electrode, whereby it contracts or extends when voltage is applied between the work electrode and the counter electr... | 10/28/2008 |
| 7436099 | Electroactive polymer pre-strain The present invention provides electroactive polymers, transducers and devices that maintain pre-strain in one or more portions of an electroactive polymer. Electroactive polymers described herein may include a pre-strained portion and a stiffened portion configured... | 10/14/2008 |
| 7397166 | Electroactive polymer-actuated peristaltic pump and medical lead incorporating such a pump A peristaltic pump for conveying a fluid comprises a flexible tube having an outer surface and a lumen for carrying the fluid such as a therapeutic agent. The tube has a length defined by opposed ends of the tube, the outer surface of the body carrying a plurality o... | 07/08/2008 |
| 7394181 | Hybrid eletromechanical actuator and actuation system A hybrid electromechanical actuator has two different types of electromechanical elements, one that expands in a transverse direction when electric power is applied thereto and one that contracts in a transverse direction when electric power is applied thereto. The ... | 07/01/2008 |
| 7388321 | Piezoelectric body, electric generator and polymer actuator A piezoelectric body comprising a powder compact 1 formed from conductive powder comprising a conductive polymer and a dopant, and an ion donor 2, to generate an electromotive force by stress change, and an electric generator or a polymer actuator comp... | 06/17/2008 |
| 7382082 | Piezoelectric transducer with gas matrix A piezoelectric transducer defined by two faces comprises a plurality of piezoelectric cylinders. The axial length and composition of the piezoelectric cylinders determines the frequency of the transducer when excited. The axial ends of the piezoelectric cylinders a... | 06/03/2008 |
| 7378783 | Electroactive polymer torsional device The present invention relates to mechanical-electrical power conversion systems. The systems comprise one or more electroactive polymers that convert between electrical and mechanical energy. When a voltage is applied to electrodes contacting an electroactive polyme... | 05/27/2008 |
| 7368862 | Electroactive polymer generators The present invention relates to transducers, their use and fabrication. The transducers convert between mechanical and electrical energy. Some transducers of the present invention include a pre-strained polymer. The pre-strain improves the conversion between electr... | 05/06/2008 |
| 7362032 | Electroactive polymer devices for moving fluid The invention describes devices for performing thermodynamic work on a fluid, such as pumps, compressors and fans. The thermodynamic work may be used to provide a driving force for moving the fluid. Work performed on the fluid may be transmitted to other devices, su... | 04/22/2008 |
| 7362035 | Polymer bulk acoustic resonator A polymer bulk acoustic resonator that includes an active semiconductor layer, a first thin film electrode layer applied to the semiconductor layer, a thin film electro-active polymer layer applied to the first thin film electrode layer; and a second thin film elect... | 04/22/2008 |
| 7362040 | Device for opening and closing a mobile element A device for opening and closing an opening (11), in particular in a motor vehicle, by means of a motor-driven, movable part (10), with a control unit (26) and a pinch prevention sensor (14), which is disposed essentially along an edge ( | 04/22/2008 |
| 7352111 | Electroactive polymer pumping system An electroactive polymer pump having an electroactive polymer mass forming a channel between an inlet and an outlet and an electrical distribution system in operational connection with the electroactive polymer mass for selectively energizing sections of the electro... | 04/01/2008 |
| 7342350 | Handheld device having ultrasonic transducer for axial transmission of acoustic signals A handheld stylus having an elongated housing, a writing and drawing implement disposed within the housing and including a tip extending through an opening at an end of the housing where ultrasonic waves radiate therefrom and are used for determining a position of t... | 03/11/2008 |
| 7327067 | Actuator modules A lightweight, compact, and flexible organic actuator module that is stably operated in a gas such as air and safely handled has a structure in which an organic actuator and a counter electrode immersed in electrolyte solution together with the gas are stored and se... | 02/05/2008 |
| 7317275 | Harmonic propulsion and harmonic controller A device and method for propelling objects using periodic or harmonic vibrations is described. The device comprises a flexible substrate or surface and a source of vibrational energy that is applied to the substrate or surface. Specific embodiments include a device ... | 01/08/2008 |
| 7315109 | Actuators and fluid delivery systems using such actuators An actuator includes a non-magnetic, electroactive material that is suitable to impart force upon application of an electric current, a power supply to provide an electric current to the electroactive material and a controller in operative connection with the power ... | 01/01/2008 |
| 7301493 | Meta-materials based upon surface coupling phenomena to achieve one-way mirror for various electro-magnetic signals A one-way reflective sensor shield with an increased bandwidth meta-materials coating is provided which substantially reduces or eliminates deleterious electronic signatures and backscattering. The one-way reflective sensor shield with meta-materials coating operate... | 11/27/2007 |
| 7259503 | Electroactive polymers The present invention relates to transducers, their use and fabrication. The transducers convert between mechanical and electrical energy. Some transducers of the present invention include a pre-strained polymer. The pre-strain improves the conversion between electr... | 08/21/2007 |
| 7259495 | Conductive polymer actuator Two conductive polymer films, one of which swells and the other of which shrinks by an oxidation-reduction reaction, are connected to a link mechanism for reciprocally converting shrinkage-directional displacements of one film to swell-directional displacements of t... | 08/21/2007 |
| 7242134 | Electromechanical actuator and methods of providing same An electromechanical actuator comprising an inherently conducting polymer and a conductor for conducing voltage along the polymer from a first end region thereof. The conductor is adapted for axially extending and contracting with axial expansion and contraction of ... | 07/10/2007 |
| 7233097 | Rolled electroactive polymers The invention describes rolled electroactive polymer devices. The invention also describes employment of these devices in a wide array of applications and methods for their fabrication. A rolled electroactive polymer device converts between electrical and mechanical... | 06/19/2007 |
