Patents by Inventor Nilesh Mankame
Nilesh Mankame 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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Publication number: 20220154702Abstract: A phase transformational cellular material, including a plurality of bistable cells, each respective bistable cell operationally connected to at least one other respective bistable cell. Each bistable cell enjoys a first stable phase and a second stable phase. The first stable phase is a first geometric configuration and the second stable phase is a second geometric configuration different from the first geometric configuration. An energy transaction is required to shift each respective cell between stable phases. A mechanical energy transaction is required to shift from the first to the second phase, while a thermal energy transaction is required to shift from the second to the first phase.Type: ApplicationFiled: March 27, 2020Publication date: May 19, 2022Inventors: Pablo Zavattieri, Yunlan Zhang, Nilesh Mankame, David Restrepo, Gordon Jarrold, Maria Milian Velay-Lizancos
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Patent number: 8118866Abstract: A percutaneously inserted bistable heart valve prosthesis is folded inside a catheter for transseptal delivery to the patient's heart for implantation. The heart valve has an annular ring, a body member having a plurality of legs, each leg connecting at one end to the annular ring, claws that are adjustable from a first position to a second position by application of external force so as to allow ingress of surrounding heart tissue into the claws in the second position, and leaflet membranes connected to the annular ring, the body member and/or the legs, the leaflet membranes having a first position for blocking blood flow therethrough and a second position for allowing blood flow therethrough. The heart valve is designed such that upon removal of the external force the claws elastically revert to the first position so as to grip the heart tissue positioned within the claws, thereby holding the heart valve in place. The body member and claws may be integrated into a one-piece design.Type: GrantFiled: October 21, 2009Date of Patent: February 21, 2012Assignee: The Trustees of the University of PennsylvaniaInventors: Howard C. Herrmann, Nilesh Mankame, Suresh G. K. Ananthasuresh
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Publication number: 20100042208Abstract: A percutaneously inserted bistable heart valve prosthesis is folded inside a catheter for transseptal delivery to the patient's heart for implantation. The heart valve has an annular ring, a body member having a plurality of legs, each leg connecting at one end to the annular ring, claws that are adjustable from a first position to a second position by application of external force so as to allow ingress of surrounding heart tissue into the claws in the second position, and leaflet membranes connected to the annular ring, the body member and/or the legs, the leaflet membranes having a first position for blocking blood flow therethrough and a second position for allowing blood flow therethrough. The heart valve is designed such that upon removal of the external force the claws elastically revert to the first position so as to grip the heart tissue positioned within the claws, thereby holding the heart valve in place. The body member and claws may be integrated into a one-piece design.Type: ApplicationFiled: October 21, 2009Publication date: February 18, 2010Applicant: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIAInventors: Howard C. Herrmann, Nilesh Mankame, Suresh G. K. Ananthasuresh
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Patent number: 7621948Abstract: A percutaneously inserted bistable heart valve prosthesis is folded inside a catheter for transseptal delivery to the patient's heart for implantation. The heart valve has an annular ring, a body member having a plurality of legs, each leg connecting at one end to the annular ring, claws that are adjustable from a first position to a second position by application of external force so as to allow ingress of surrounding heart tissue into the claws in the second position, and leaflet membranes connected to the annular ring, the body member and/or the legs, the leaflet membranes having a first position for blocking blood flow therethrough and a second position for allowing blood flow therethrough. The heart valve is designed such that upon removal of the external force the claws elastically revert to the first position so as to grip the heart tissue positioned within the claws, thereby holding the heart valve in place. The body member and claws may be integrated into a one-piece design.Type: GrantFiled: July 20, 2004Date of Patent: November 24, 2009Assignee: The Trustees of the University of PennsylvaniaInventors: Howard C Herrmann, Nilesh Mankame, Suresh G. K. Ananthasuresh
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Publication number: 20080100092Abstract: A door system includes a structural member and a door that is movably mounted with respect to the structural member for movement between an open position and a closed position. A spring is mounted with respect to the structural member or the door and being sufficiently positioned to bias the door toward its open position when the door is in its closed position. Active material based actuators may selectively compress the spring prior to door closure to minimize door closing effort.Type: ApplicationFiled: October 30, 2007Publication date: May 1, 2008Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Xiujie Gao, James Shoemaker, Paul Alexander, Alan Browne, Nancy Johnson, Nilesh Mankame, Louise Stauffer, Robert Vitale, Jack Bailey
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Publication number: 20070182146Abstract: A vehicle member generally comprises a thermally activated shape memory material in operative communication with a pyrotechnic device. The pyrotechnic device is effective to thermally change a dimension, a shape, an orientation change, an elastic modulus property change or a combination comprising at least one of the foregoing properties of the shape memory material, which results in a structural and/or mechanical change to the vehicle member.Type: ApplicationFiled: February 3, 2006Publication date: August 9, 2007Inventors: Alan Browne, Kenneth Strom, Nilesh Mankame, Mark Kramarczyk
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Publication number: 20070102962Abstract: A tunable property bracket for a vehicle body, includes a support member comprising a first active material configured to provide support for static and dynamic loads during normal operation of the vehicle body, wherein the first active material undergoes a change in a property upon exposure to an activating condition during a loading event or a sensed loading event, wherein the change in the property is effective to provide a load bearing capacity change to the support member.Type: ApplicationFiled: October 31, 2006Publication date: May 10, 2007Applicant: GM Global Technology Operations, Inc.Inventors: Paul Alexander, Alan Browne, Nancy Johnson, Nilesh Mankame, Hanif Muhammad, Thomas Wanke
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Publication number: 20070016286Abstract: A percutaneously inserted bistable heart valve prosthesis is folded inside a catheter for transseptal delivery to the patient's heart for implantation. The heart valve has an annular ring, a body member having a plurality of legs, each leg connecting at one end to the annular ring, claws that are adjustable from a first position to a second position by application of external force so as to allow ingress of surrounding heart tissue into the claws in the second position, and leaflet membranes connected to the annular ring, the body member and/or the legs, the leaflet membranes having a first position for blocking blood flow therethrough and a second position for allowing blood flow therethrough. The heart valve is designed such that upon removal of the external force the claws elastically revert to the first position so as to grip the heart tissue positioned within the claws, thereby holding the heart valve in place. The body member and claws may be integrated into a one-piece design.Type: ApplicationFiled: July 20, 2004Publication date: January 18, 2007Inventors: Howard Herrmann, Nilesh Mankame, Suresh Ananthasuresh
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Publication number: 20060186126Abstract: Reconfigurable structures include at least one hub, a plurality of arms attached to and extending from the at least one hub, wherein at least a portion of the arm and/or hub defines a node and is formed of an active material. The active material is adapted to change at least one attribute in response to an activation signal, wherein the change in the at least one attribute changes a modulus property, a shape orientation, or a combination of the modulus property change and the shape orientation change to the active material portion. The plurality of arms and at least one hub can form a reconfigurable opening for attaching and releasing a member. Alternatively, the plurality of arms and/or hub can further include a connector for attaching an additional structure. Also disclosed herein are methods for selectively reconfiguring a structure.Type: ApplicationFiled: February 17, 2006Publication date: August 24, 2006Inventors: Alan Browne, Nilesh Mankame, Nancy Johnson
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Publication number: 20060186700Abstract: A panel having active material based segments, wherein the segments define a hinge location that can be selectively stiffened or folded on demand. The active material based segments include an active material such that activation of the active material by an activation device can allow folding of the panel, can effect self-folding of the panel, or can serve to lock the panel into a fixed position when not activated. In this manner, the panel that can be variously stiffened or folded on demand. Other embodiments include forming the panel of the active material such that the panel can be compacted and stowed upon activation of the active material to change the modulus properties thereof.Type: ApplicationFiled: February 17, 2006Publication date: August 24, 2006Inventors: Alan Browne, Nilesh Mankame, Nancy Johnson, Andrew Keefe
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Publication number: 20060156785Abstract: A reconfigurable fixture device system, including: a base member; a reconfigurable pad disposed on the base member, wherein the reconfigurable pad comprises a shape memory material configured to selectively conform to a surface contour of a workpiece; an activation device in operative communication with the shape memory material; a controller in operable communication with at least one of the reconfigurable pad, the activation device, and the base member; a plurality of sensors for sensing a parameter associated with at least one of the reconfigurable pad, the base member, the fixture device, and the workpiece, wherein the plurality of sensors is in operable communication with the controller; and an actuator in operable communication with the controller and the at least one of the reconfigurable pad, the base member, the fixture device, and the workpiece.Type: ApplicationFiled: January 19, 2006Publication date: July 20, 2006Inventors: Nilesh Mankame, James Wells, Christopher Henry, Ivan Sears, Douglas Linn, Alan Browne, Richard Skurkis
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Publication number: 20060157907Abstract: A fixture device generally includes a base member, a reconfigurable pad disposed on the base member, wherein the reconfigurable pad comprises a shape memory material configured to selectively conform to a surface contour of a workpiece, and an activation device in operative communication with the shape memory material.Type: ApplicationFiled: January 19, 2006Publication date: July 20, 2006Inventors: Alan Browne, Douglas Linn, Nilesh Mankame, Roland Menassa, Ivan Sears, Robin Stevenson, Christopher Henry, Nancy Johnson, Charles Wampler
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Publication number: 20060156535Abstract: A process generally includes contacting a surface of at least one workpiece with a reconfigurable pad of a fixture device, wherein the reconfigurable pad comprises a shape memory material configured to conform to the surface of the at least one workpiece, and fixturing the contacted workpiece.Type: ApplicationFiled: January 19, 2006Publication date: July 20, 2006Inventors: Alan Browne, Douglas Linn, Nilesh Mankame, Roland Menassa, Ivan Sears, Robin Stevenson, Christopher Henry, Nancy Johnson
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Publication number: 20060157908Abstract: A fixture device generally includes a base member, a reconfigurable pad comprising a shape memory material configured to selectively conform to a surface contour of a workpiece, and a thermoelectric unit in operative communication with the shape memory material of the reconfigurable pad. A process for operating a fixture device includes passing a current in a first direction through a thermoelectric unit in operative communication with a reconfigurable pad in an amount effective to heat a shape memory material therein to or above a shape setting temperature, contacting a surface of a workpiece with the reconfigurable pad, cooling the shape memory material below the shape setting temperature, and fixturing the workpiece with the fixture device.Type: ApplicationFiled: January 19, 2006Publication date: July 20, 2006Inventors: Mark Verbrugge, Jihui Yang, Yang Cheng, Michael Lukitsch, Alan Browne, Nilesh Mankame
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Publication number: 20050263359Abstract: Disclosed herein is a strut assembly 10 comprising a housing 2; a piston 3 in slideable communication with the housing 2; an actuator 16 in operative communication with the piston 3 and/or the housing 2; wherein the actuator 16 is adapted to change the location of the housing 2 from a first position to a second position and/or change in a stroke length of the piston 3. Disclosed herein too is a method for changing the strut length of a strut assembly 10 comprising activating an actuator 16 that is in operative communication with a housing 2 or a piston of the strut assembly 10; and changing in the location of the housing 2 from a first position to a second position and/or changing a stroke length of the piston 3.Type: ApplicationFiled: March 11, 2005Publication date: December 1, 2005Inventors: Nilesh Mankame, Robin Stevenson, Alan Browne, Nancy Johnson, Gary Jones, John Ulicny
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Publication number: 20050230195Abstract: Disclosed herein is a strut assembly 10 comprising a locking device 11 in operative communication with a piston 3, wherein the locking device 11 comprises an active material operative to resist motion of the piston 3 in response to an activation signal. Disclosed herein too is a method of operating a strut assembly 10 comprising displacing a suspended body 60 in mechanical communication with a piston 3; activating an active material in operative communication with the piston 3; and controlling the motion of the suspended body 60.Type: ApplicationFiled: March 11, 2005Publication date: October 20, 2005Inventors: Gary Jones, Nilesh Mankame, Alan Browne, Nancy Johnson, Norman Bucknor, Paul Meernik, John Ulicny, James O'Kane
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Publication number: 20050205364Abstract: Disclosed herein is a strut assembly 10 comprising a piston 3 in slideable communication with a housing 2; a seal 6 in operative communication with the piston 3 and/or the housing 2; wherein the seal 6 comprises an active material adapted to control the motion of the piston 3. Disclosed herein too is a method of operating a strut assembly 10 comprising displacing a suspended body 60 in mechanical communication with a piston 3; wherein the piston 3 comprises a piston head 14 and a piston rod 12; activating an active material in operative communication with the piston head 14; and controlling the motion of the suspended body 60.Type: ApplicationFiled: March 10, 2005Publication date: September 22, 2005Inventors: Alan Browne, Nancy Johnson, Nilesh Mankame, John Ulicny, Gary Jones, James O'Kane
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Publication number: 20050200067Abstract: Disclosed herein is a programmable shim 28 for positioning a work piece 12 comprising a first plate 30; an optional reference frame 32; and an actuator 34 in operative communication with the first plate 30 and the reference frame 32. Disclosed herein too is a method of aligning a work piece 12 comprising disposing the work piece 12 upon a first plate 30 of a programmable shim 28; activating an actuator 34 with an external stimulus; wherein the actuator 34 is in operative communication with the first plate 30; and displacing the work piece 12.Type: ApplicationFiled: March 11, 2005Publication date: September 15, 2005Inventors: Alan Browne, Charles Wampler, Andrew Keefe, Nancy Johnson, John Cafeo, Gary Jones, William Barvosa-Carter, Nilesh Mankame
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Publication number: 20050199455Abstract: Disclosed herein is a strut assembly 10 comprising a piston 3 in slideable communication with the housing 2; an actuator 16 in operative communication with the piston 3, wherein the actuator 16 comprises a shape memory material and is adapted to control the displacement of the piston. Disclosed herein too is a method of operating a strut assembly 10 comprising displacing a suspended body 60 in operative communication with a piston; and activating an actuator 16 in operative communication with the piston, wherein the actuator 16 comprises a shape memory material.Type: ApplicationFiled: March 10, 2005Publication date: September 15, 2005Inventors: Alan Browne, Nancy Johnson, Nilesh Mankame, John Ulicny, Gary Jones, James O'Kane