Patents by Inventor Roy D. Kornbluh
Roy D. Kornbluh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7872850Abstract: Described herein is electroadhesion technology that permits controllable adherence between two objects. Electroadhesion uses electrostatic forces of attraction produced by an electrostatic adhesion voltage, which is applied using electrodes in an electroadhesive device. The electrostatic adhesion voltage produces an electric field and electrostatic adherence forces. When the electroadhesive device and electrodes are positioned near a surface of an object such as a vertical wall, the electrostatic adherence forces hold the electroadhesive device in position relative to the surface and object. This can be used to increase traction or maintain the position of the electroadhesive device relative to a surface. Electric control of the electrostatic adhesion voltage permits the adhesion to be controllably and readily turned on and off.Type: GrantFiled: May 15, 2009Date of Patent: January 18, 2011Assignee: SRI InternationalInventors: Ronald E. Pelrine, Harsha Prahlad, Roy D. Kornbluh, Patrick D. Lincoln, Scott Stanford
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Publication number: 20100271746Abstract: Described herein is electroadhesion technology that permits controllable adherence between two objects. Electroadhesion uses electrostatic forces of attraction produced by an electrostatic adhesion voltage, which is applied using electrodes in an electroadhesive device. The electrostatic adhesion voltage produces an electric field and electrostatic adherence forces. When the electroadhesive device and electrodes are positioned near a surface of an object such as a vertical wall, the electrostatic adherence forces hold the electroadhesive device in position relative to the surface and object. This can be used to increase traction or maintain the position of the electroadhesive device relative to a surface. Electric control of the electrostatic adhesion voltage permits the adhesion to be controllably and readily turned on and off.Type: ApplicationFiled: July 2, 2010Publication date: October 28, 2010Applicant: SRI INTERNATIONALInventors: Ronald E. Pelrine, Harsha Prahlad, Joseph S. Eckerle, Roy D. Kornbluh, Scott Stanford
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Patent number: 7804227Abstract: Described herein are several solutions that increase transducer lifetime by reducing or preventing tear propagation in a compliant electroactive polymer. One solution couples a compliant tear resistant treatment to a transducer proximate to an edge portion of the electroactive polymer. Another solution uses a tear resistant layer that couples to and covers a large surface area of the transducer. Another suitable tear resistant solution provides added material outside an active area; the added material reduces stress or strain variations in polymer material outside the active area when the electroactive polymer transducer is deflected or pre-strained.Type: GrantFiled: March 13, 2008Date of Patent: September 28, 2010Assignee: SRI InternationalInventors: Ronald E. Pelrine, Roy D. Kornbluh, Harsha Prahlad, Sunity K. Sharma, Bryan Chavez, Donald E. Czyzyk, Annjoe Wong-Foy, Scott E. Stanford
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Patent number: 7787646Abstract: The present invention provides electroactive polymer transducers that produce out-of-plane deflections. The transducers form a set of surface features based on deflection of an electroactive polymer. The set of surface features may include elevated polymer surface features and/or depressed electrode surface features. Actuation of an active area may produce the polymer deflection that creates one or more surface features. A passive layer may operably connect to a polymer. The passive layer may comprise a thicker and softer material to amplify polymer thickness changes and increase surface feature visibility.Type: GrantFiled: July 29, 2007Date of Patent: August 31, 2010Assignee: SRI InternationalInventors: Ronald E. Pelrine, Roy D. Kornbluh, Harsha Prahlad
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Patent number: 7773363Abstract: Described herein is electroadhesion technology that permits controllable adherence between two objects. Electroadhesion uses electrostatic forces of attraction produced by an electrostatic adhesion voltage, which is applied using electrodes in an electroadhesive device. The electrostatic adhesion voltage produces an electric field and electrostatic adherence forces. When the electroadhesive device and electrodes are positioned near a surface of an object such as a vertical wall, the electrostatic adherence forces hold the electroadhesive device in position relative to the surface and object. This can be used to increase traction or maintain the position of the electroadhesive device relative to a surface. Electric control of the electrostatic adhesion voltage permits the adhesion to be controllably and readily turned on and off.Type: GrantFiled: July 30, 2007Date of Patent: August 10, 2010Assignee: SRI InternationalInventors: Ronald E. Pelrine, Harsha Prahlad, Joseph S. Eckerle, Roy D. Kornbluh, Scott Stanford
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Patent number: 7705521Abstract: 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 polymer, the polymer deflects. This deflection may be converted into rotation of a power shaft included in a motor. Repeated deflection of the polymer may then produce continuous rotation of the power shaft.Type: GrantFiled: April 23, 2008Date of Patent: April 27, 2010Assignee: SRI InternationalInventors: Ronald E. Pelrine, Roy D. Kornbluh, Jonathan Heim
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Publication number: 20100059298Abstract: Described herein is electroadhesion technology that permits controllable adherence between two objects. Electroadhesion uses electrostatic forces of attraction produced by an electrostatic adhesion voltage, which is applied using electrodes in an electroadhesive device. The electrostatic adhesion voltage produces an electric field and electrostatic adherence forces. When the electroadhesive device and electrodes are positioned near a surface of an object such as a vertical wall, the electrostatic adherence forces hold the electroadhesive device in position relative to the surface and object. This can be used to increase traction or maintain the position of the electroadhesive device relative to a surface. Electric control of the electrostatic adhesion voltage permits the adhesion to be controllably and readily turned on and off.Type: ApplicationFiled: May 15, 2009Publication date: March 11, 2010Applicant: SRI INTERNATIONALInventors: Ronald E. Pelrine, Harsha Prahlad, Roy D. Kornbluh, Patrick D. Lincoln, Scott Stanford
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Publication number: 20100026143Abstract: The present invention relates to polymers, transducers and devices that convert between electrical and mechanical energy. When a voltage is applied to electrodes contacting an electroactive polymer, the polymer deflects. This deflection may be used to do mechanical work. Similarly, when the electroactive polymer deflects, an electric field is produced in the polymer. This electric field may be used to produce electrical energy. An active area is a portion of a polymer having sufficient electrostatic force to enable deflection of the portion and/or sufficient deflection to enable a change in electrostatic force. The present invention relates to transducers and devices including multiple active areas. The invention also relates to methods for actuating one or more active areas.Type: ApplicationFiled: July 12, 2007Publication date: February 4, 2010Applicant: SRI INTERNATIONALInventors: Ronald E. Pelrine, Roy D. Kornbluh, Qibing Pei, Joseph S. Eckerle
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Publication number: 20100027187Abstract: Described herein is electroadhesion technology that permits controllable adherence between two objects. Electroadhesion uses electrostatic forces of attraction produced by an electrostatic adhesion voltage, which is applied using electrodes in an electroadhesive device. The electrostatic adhesion voltage produces an electric field and electrostatic adherence forces. When the electroadhesive device and electrodes are positioned near a surface of an object such as a vertical wall, the electrostatic adherence forces hold the electroadhesive device in position relative to the surface and object. This can be used to increase traction or maintain the position of the electroadhesive device relative to a surface. Electric control of the electrostatic adhesion voltage permits the adhesion to be controllably and readily turned on and off.Type: ApplicationFiled: July 30, 2007Publication date: February 4, 2010Applicant: SRI INTERNATIONALInventors: Ronald E. PELRINE, Harsha PRAHLAD, Joseph S. ECKERLE, Roy D. KORNBLUH, Scott STANFORD
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Publication number: 20100013356Abstract: 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 communication with the transducer electrodes is configured to apply a driving signal that causes the electroactive polymer to deflect in the acoustic range.Type: ApplicationFiled: September 22, 2009Publication date: January 21, 2010Applicant: SRI INTERNATIONALInventors: Richard P. HEYDT, Ronald E. PELRINE, Roy D. KORNBLUH, Neville A. BONWIT, Joseph S. ECKERLE
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Patent number: 7649276Abstract: Described herein are marine devices and methods that convert mechanical energy in one or more waves to mechanical energy that is better suited for conversion into electrical energy. The marine devices employ a mechanical energy conversion system that harnesses wave energy and converts it into limited motion that is suitable for input to an electrical energy generator.Type: GrantFiled: July 30, 2007Date of Patent: January 19, 2010Assignee: SRI InternationalInventors: Roy D. Kornbluh, Ronald E. Pelrine, Harsha Prahlad, Seiki Chiba, Joseph S. Eckerle, Bryan Chavez, Scott E. Stanford, Thomas Low
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Publication number: 20100007240Abstract: The present invention provides meta-materials with an actively controllable mechanical property. The meta-material includes a deformable structure and a set of activation elements. The activation elements are controllable between multiple states. The meta-material includes a first value for a mechanical property when one or more of the activation elements is in the first activation state and includes a second value for the mechanical property when the activation elements have been activated to the second activation state. In one aspect, the meta-material resembles a composite material where the connectivity between the component materials or shape and arrangement of the component materials is dynamically controllable so as to affect a mechanical property of the meta-material.Type: ApplicationFiled: August 28, 2009Publication date: January 14, 2010Applicant: SRI INTERNATIONALInventors: Roy D. Kornbluh, Ronald E. Pelrine, Harsha E. Prahlad, Scott E. Stanford
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Patent number: 7608989Abstract: 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 communication with the transducer electrodes is configured to apply a driving signal that causes the electroactive polymer to deflect in the acoustic range.Type: GrantFiled: February 20, 2007Date of Patent: October 27, 2009Assignee: SRI InternationalInventors: Richard P. Heydt, Ronald E. Pelrine, Roy D. Kornbluh, Neville A. Bonwit, Joseph S. Eckerle
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Patent number: 7598652Abstract: The present invention provides meta-materials with an actively controllable mechanical property. The meta-material includes a deformable structure and a set of activation elements. The activation elements are controllable between multiple states. The meta-material includes a first value for a mechanical property when one or more of the activation elements is in the first activation state and includes a second value for the mechanical property when the activation elements have been activated to the second activation state. In one aspect, the meta-material resembles a composite material where the connectivity between the component materials or shape and arrangement of the component materials is dynamically controllable so as to affect a mechanical property of the meta-material.Type: GrantFiled: July 30, 2007Date of Patent: October 6, 2009Assignee: SRI InternationalInventors: Roy D. Kornbluh, Ronald E. Pelrine, Harsha Prahlad, Scott E. Stanford
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Patent number: 7598651Abstract: The present invention provides meta-materials with an actively controllable mechanical property. The meta-material includes a deformable structure and a set of activation elements. The activation elements are controllable between multiple states. The meta-material includes a first value for a mechanical property when one or more of the activation elements is in the first activation state and includes a second value for the mechanical property when the activation elements have been activated to the second activation state. In one aspect, the meta-material resembles a composite material where the connectivity between the component materials or shape and arrangement of the component materials is dynamically controllable so as to affect a mechanical property of the meta-material.Type: GrantFiled: March 11, 2005Date of Patent: October 6, 2009Assignee: SRI InternationalInventors: Roy D. Kornbluh, Ronald E. Pelrine, Harsha Prahlad, Scott E. Stanford
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Publication number: 20090241894Abstract: Combustion devices described herein comprise a compliant combustion chamber wall or segment. The compliant segment deforms during combustion in the combustion chamber. Some devices may include a compliant wall configured to stretch responsive to pressure generated by combustion of a fuel in the combustion chamber. A coupling portion translates deformation of the compliant segment or wall into mechanical output. One or more ports are configured to inlet an oxygen source and fuel into the combustion chamber and to outlet exhaust gases from the combustion chamber.Type: ApplicationFiled: December 30, 2008Publication date: October 1, 2009Applicant: SRI INTERNATIONALInventors: Ronald E. Pelrine, Scott E. Stanford, Harsha Prahlad, Seajin Oh, Jonathan Heim, Roy D. Kornbluh
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Patent number: 7567681Abstract: The present invention provides electroactive polymer transducers that produce out-of-plane deflections. The transducers form a set of surface features based on deflection of an electroactive polymer. The set of surface features may include elevated polymer surface features and/or depressed electrode surface features. Actuation of an active area may produce the polymer deflection that creates one or more surface features. A passive layer may operably connect to a polymer. The passive layer may comprise a thicker and softer material to amplify polymer thickness changes and increase surface feature visibility.Type: GrantFiled: September 1, 2004Date of Patent: July 28, 2009Assignee: SRI InternationalInventors: Ronald E. Pelrine, Roy D. Kornbluh, Harsha Prahlad
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Patent number: 7557456Abstract: Described herein are systems and methods that use an electroactive polymer transducer to convert mechanical energy, originally contained in one or more waves, to electrical energy. Marine devices described herein may employ a mechanical energy conversion system that transfers mechanical energy in a wave into mechanical energy suitable for input to the electroactive polymer transducer.Type: GrantFiled: March 9, 2007Date of Patent: July 7, 2009Assignee: SRI InternationalInventors: Roy D. Kornbluh, Ronald E. Pelrine, Harsha Prahlad, Seiki Chiba, Joseph S. Eckerle, Bryan Chavez, Scott E. Stanford, Thomas Low
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Patent number: 7554787Abstract: Described herein is electroadhesion technology that permits controllable adherence between two objects. Electroadhesion uses electrostatic forces of attraction produced by an electrostatic adhesion voltage, which is applied using electrodes in an electroadhesive device. The electrostatic adhesion voltage produces an electric field and electrostatic adherence forces. When the electroadhesive device and electrodes are positioned near a surface of an object such as a vertical wall, the electrostatic adherence forces hold the electroadhesive device in position relative to the surface and object. This can be used to increase traction or maintain the position of the electroadhesive device relative to a surface. Electric control of the electrostatic adhesion voltage permits the adhesion to be controllably and readily turned on and off.Type: GrantFiled: June 4, 2007Date of Patent: June 30, 2009Assignee: SRI InternationalInventors: Ronald E. Pelrine, Harsha Prahlad, Roy D. Kornbluh, Patrick D. Lincoln, Scott Stanford
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Patent number: 7551419Abstract: Described herein is electroadhesion technology that permits controllable adherence between two objects. Electroadhesion uses electrostatic forces of attraction produced by an electrostatic adhesion voltage, which is applied using electrodes in an electroadhesive device. The electrostatic adhesion voltage produces an electric field and electrostatic adherence forces. When the electroadhesive device and electrodes are positioned near a surface of an object such as a vertical wall, the electrostatic adherence forces hold the electroadhesive device in position relative to the surface and object. This can be used to increase traction or maintain the position of the electroadhesive device relative to a surface. Electric control of the electrostatic adhesion voltage permits the adhesion to be controllably and readily turned on and off.Type: GrantFiled: June 4, 2007Date of Patent: June 23, 2009Assignee: SRI InternationalInventors: Ronald E. Pelrine, Harsha Prahlad, Joseph S. Eckerle, Roy D. Kornbluh, Scott Stanford