Patents by Inventor Craig Lusk
Craig Lusk 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: 11067118Abstract: A linear element with two stable points, it can be used as trust element allows for change in length. It can transform structure from one shape to another thus allowing for morphable configuration. A new model is presented herein for a linear bi-stable compliant mechanism and design guidelines for its use. The mechanism is based on the crank-slider mechanism. This model takes into account the first mode of buckling and post-buckling behavior of a compliant segment to describe the mechanism's bi-stable behavior. The kinetic and kinematic equations, derived from the Pseudo-Rigid-Body Model, were solved numerically and are represented in plots. This representation allows the generation of step-by-step design guidelines. Because different applications may have different input requirements, two different design approaches are described herein with different parameters subsets as inputs.Type: GrantFiled: June 11, 2019Date of Patent: July 20, 2021Assignee: University of South FloridaInventors: Ahmad Alqasimi, Craig Lusk
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Patent number: 10473152Abstract: A linear element with two stable points, it can be used as trust element allows for change in length. It can transform structure from one shape to another thus allowing for morphable configuration. A new model is presented herein for a linear bi-stable compliant mechanism and design guidelines for its use. The mechanism is based on the crank-slider mechanism. This model takes into account the first mode of buckling and post-buckling behavior of a compliant segment to describe the mechanism's hi-stable behavior. The kinetic and kinematic equations, derived from the Pseudo-Rigid-Body Model, were solved numerically and are represented in plots. This representation allows the generation of step-by-step design guidelines. Because different applications may have different input requirements, two different design approaches are described herein with different parameters subsets as inputs.Type: GrantFiled: June 30, 2016Date of Patent: November 12, 2019Assignee: University of South FloridaInventors: Ahmad Alqasimi, Craig Lusk
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Publication number: 20190323550Abstract: A linear element with two stable points, it can be used as trust element allows for change in length. It can transform structure from one shape to another thus allowing for morphable configuration. A new model is presented herein for a linear bi-stable compliant mechanism and design guidelines for its use. The mechanism is based on the crank-slider mechanism. This model takes into account the first mode of buckling and post-buckling behavior of a compliant segment to describe the mechanism's bi-stable behavior. The kinetic and kinematic equations, derived from the Pseudo-Rigid-Body Model, were solved numerically and are represented in plots. This representation allows the generation of step-by-step design guidelines. Because different applications may have different input requirements, two different design approaches are described herein with different parameters subsets as inputs.Type: ApplicationFiled: June 11, 2019Publication date: October 24, 2019Applicant: University of South FloridaInventors: Ahmad Alqasimi, Craig Lusk
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Patent number: 10422124Abstract: A bistable collapsible compliant mechanism including a first sub-mechanism comprising opposed first and second quaternary links and multiple binary links, each link being connected to at least two other links in the sub-mechanism, and a second sub-mechanism connected to the first sub-mechanism, the second sub-mechanism also comprising opposed first and second quaternary links and multiple binary links, each link being connected to at least two other links in the sub-mechanism, wherein the bistable collapsible compliant mechanism can be alternatively be placed in a stable extended orientation in which the bistable collapsible compliant mechanism has a trapezoidal shape and in a stable contracted orientation in which the bistable collapsible compliant mechanism has a polygonal spiral shape.Type: GrantFiled: May 12, 2017Date of Patent: September 24, 2019Assignee: University of South FloridaInventors: Rami A. Alfattani, Craig Lusk
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Patent number: 10336028Abstract: The first objective of this paper is to take an existing design for a shape-shifting surface (SSS) and make it waterproof, making it an effective barrier to fluid flow. The second objective is to minimize internal stresses in the device during operation, by optimizing the kinematic geometry of the SSS. The first objective was achieved by adding a waterproof membrane between the layers of the SSS, where the membrane had an origami fold pattern that enables the membrane to mimic the kinematics of the SSS. The second objective was achieved by creating a two objective optimization routine, which determined the kinematic geometry of the SSS which would minimize the internal stresses due to compression/tension of the flexure portion of the SSS during operation. The resulting SSS is easier to operate due to lower stresses, and has a membrane which prevents transverse fluid flow and mimics its motion.Type: GrantFiled: July 28, 2016Date of Patent: July 2, 2019Assignee: University of South FloridaInventors: Andrew Jason Katz, Craig Lusk
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Patent number: 10330144Abstract: A linear element with two stable points, it can be used as trust element allows for change in length. It can transform structure from one shape to another thus allowing for morphable configuration. A new model is presented herein for a linear bi-stable compliant mechanism and design guidelines for its use. The mechanism is based on the crank-slider mechanism. This model takes into account the first mode of buckling and post-buckling behavior of a compliant segment to describe the mechanism's bi-stable behavior. The kinetic and kinematic equations, derived from the Pseudo-Rigid-Body Model, were solved numerically and are represented in plots. This representation allows the generation of step-by-step design guidelines. Because different applications may have different input requirements, two different design approaches are described herein with different parameters subsets as inputs.Type: GrantFiled: August 30, 2018Date of Patent: June 25, 2019Assignee: University of South FloridaInventors: Ahmad Alqasimi, Craig Lusk
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Patent number: 10006196Abstract: A shape-morphing space frame (SMSF) utilizing the linear bistable compliant crank-slider mechanism (LBCCSM). The frame's initial shape is constructed from a single-layer grid of flexures, rigid links and LBCCSMs. The grid is bent into the space frame's initial cylindrical shape, which can morph because of the inclusion of LBCCSMs in its structure. The design parameters include the frame's initial height, its tessellation pattern (including the unit cell bistable elements' placement), its initial diameter, and the resulting desired shape. The method used in placing the unit cell bistable elements considers the principle stress trajectories. Two different examples of shape-morphing space frames are presented herein, each starting from a cylindrical-shell space frame and morphing, one to a hyperbolic-shell space frame and the other to a spherical-shell space frame, both morphing by applying moments, which shear the cylindrical shell, and forces, which change the cylinder's radius using Poisson's effect.Type: GrantFiled: August 30, 2017Date of Patent: June 26, 2018Assignee: University of South FloridaInventors: Ahmad Alqasimi, Craig Lusk
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Patent number: 9783977Abstract: Unit cell bistable elements, and particular arrangements thereof, that can transform or morph a structure from one shape to another. In certain embodiments, the current invention includes unit cell bistable elements, and particular arrangements and uses thereof, that can transform or morph a structure from one shape to another. In an embodiment, the current invention provides a method/ability to transform any four-bar compliant mechanism into a bistable compliant mechanism. It is an object of the current invention to facilitate structures morphing from one specific shape to another specific shape using unit cell bistable elements.Type: GrantFiled: June 29, 2016Date of Patent: October 10, 2017Assignee: University of South FloridaInventors: Ahmad Alqasimi, Craig Lusk
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Patent number: 9783978Abstract: A shape-morphing space frame (SMSF) utilizing the linear bistable compliant crank-slider mechanism (LBCCSM). The frame's initial shape is constructed from a single-layer grid of flexures, rigid links and LBCCSMs. The grid is bent into the space frame's initial cylindrical shape, which can morph because of the inclusion of LBCCSMs in its structure. The design parameters include the frame's initial height, its tessellation pattern (including the unit cell bistable elements' placement), its initial diameter, and the resulting desired shape. The method used in placing the unit cell bistable elements considers the principle stress trajectories. Two different examples of shape-morphing space frames are presented herein, each starting from a cylindrical-shell space frame and morphing, one to a hyperbolic-shell space frame and the other to a spherical-shell space frame, both morphing by applying moments, which shear the cylindrical shell, and forces, which change the cylinder's radius using Poisson's effect.Type: GrantFiled: August 1, 2016Date of Patent: October 10, 2017Assignee: University of South FloridaInventors: Ahmad Alqasimi, Craig Lusk
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Publication number: 20170145681Abstract: Unit cell bistable elements, and particular arrangements thereof, that can transform or morph a structure from one shape to another. In certain embodiments, the current invention includes unit cell bistable elements, and particular arrangements and uses thereof, that can transform or morph a structure from one shape to another. In an embodiment, the current invention provides a method/ability to transform any four-bar compliant mechanism into a bistable compliant mechanism. It is an object of the current invention to facilitate structures morphing from one specific shape to another specific shape using unit cell bistable elements.Type: ApplicationFiled: June 29, 2016Publication date: May 25, 2017Applicant: University of South FloridaInventors: Ahmad Alqasimi, Craig Lusk
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Patent number: 9649120Abstract: An apparatus for the insertion, placement, attachment, and removal of a surgical device includes a handle and an elongate shaft. Opposing spring fingers that open and close relative to one another are partially and slidably disposed within the distal end of the elongate shaft opposite the handle. The opposing spring fingers are adapted to grasp a surgical device and power the surgical device via physical conductors on the spring fingers or graspers attached thereto, resulting in the surgical device being fully functional. A first trigger mechanism opens and closes the spring fingers via a piston disposed within the elongate shaft. A second trigger mechanism rotates the surgical device grasped by the spring fingers.Type: GrantFiled: September 29, 2014Date of Patent: May 16, 2017Assignees: University of South Florida, Innovatia Medical Systems, L.L.C.Inventors: Richard D. Gitlin, Adam Anderson, Shekhar Bhansali, Alexander Rosemurgy, Craig Lusk, Sharona Ross, Peter P. Savage
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Patent number: 8908089Abstract: An imaging device for in vivo medical applications that enables minimally invasive surgical procedures. The imaging device includes an elongated frame having a base, a module housing, and an optional helical member interposed between the base and module housing. The imaging device further includes an actuation unit positioned within the frame that engages the module housing causing the frame to bend at the optional helical member. The module housing includes an imaging module and may include other modules including tools used for laparoscopic surgery.Type: GrantFiled: April 8, 2013Date of Patent: December 9, 2014Assignee: University of South FloridaInventors: Richard Gitlin, Craig Lusk, Shekhar Bhansali, Alexander Rosemurgy
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Patent number: 8416342Abstract: An imaging device for in vivo medical applications that enables minimally invasive surgical procedures. The imaging device includes an elongated frame having a base, a module housing, and a helical member interposed between the base and module housing. The imaging device further includes an actuation unit positioned within the frame that engages the module housing causing the frame to bend at the helical member. The module housing includes an imaging module and may include other modules including tools used for laparoscopic surgery.Type: GrantFiled: February 9, 2010Date of Patent: April 9, 2013Assignee: University of South FloridaInventors: Richard Gitlin, Craig Lusk, Shekhar Bhansali, Alexander Rosemurgy
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Patent number: 8358981Abstract: A system for performing non-invasive networked medical procedures including a number of in vivo medical devices, a communication path between at least two of the devices, an ex vivo control unit to control the behavior of the devices, and a wireless communication path between the control unit and at least one of the devices. An associated method for performing non-invasive networked medical procedures is also provided.Type: GrantFiled: October 29, 2009Date of Patent: January 22, 2013Assignee: University of South FloridaInventors: Richard Gitlin, Craig Lusk, Shekhar Bhansali, Alexander Rosemurgy
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Patent number: 8336421Abstract: A platform actuator includes a substrate, a first, a second, and a third spherical input slider-crank mechanism, wherein each of the first, second, and third spherical input slider crank mechanism is coupled by a first end to said substrate, and a platform is coupled to a second end of each of the first, second, and third spherical input slider-cranks. According to one exemplary embodiment, each of the first, second, and third spherical input slider-crank mechanisms are configured to convert in-plane motion to out-of-plane motion.Type: GrantFiled: July 31, 2006Date of Patent: December 25, 2012Assignee: Brigham Young UniversityInventors: Craig Lusk, Larry L. Howell
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Patent number: 7763818Abstract: A spherical bi-stable mechanism includes a planar bi-stable compliant member including an input and an output, and a spherical mechanism member coupled to the output of the first planar bi-stable compliant component. An actuation of the first planar bi-stable compliant member in a first plane is configured to cause the spherical mechanism member to be selectively positioned in a second plane.Type: GrantFiled: July 31, 2006Date of Patent: July 27, 2010Assignee: Brigham Young UniversityInventors: Craig Lusk, Larry L. Howell
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Patent number: 7614673Abstract: A prosthetic finger includes a crossed four (4) bar linkage system having a base formed by a base bar, two cross bars, and an interface bar that engages an object to be held. The base bar is fixed to an artificial finger of an amputee. A first cross bar has a first end pivotally mounted to a first end of the base bar and a second cross bar has a first end pivotally mounted to a second end of the base bar. The first cross bar has a second end pivotally mounted to a first end of the interface bar and the second cross bar has a second end pivotally mounted to a second end of the interface bar. The first and second cross bars are slideably interconnected to one another at a cross point which changes its location as the prosthesis grasps objects of differing sizes and shapes.Type: GrantFiled: November 1, 2007Date of Patent: November 10, 2009Assignee: University of South FloridaInventors: Murray E. Maitland, M. Jason Highsmith, Craig Lusk
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Publication number: 20080109084Abstract: A prosthetic finger includes a crossed four (4) bar linkage system having a base formed by a base bar, two cross bars, and an interface bar that engages an object to be held. The base bar is fixed to an artificial finger of an amputee. A first cross bar has a first end pivotally mounted to a first end of the base bar and a second cross bar has a first end pivotally mounted to a second end of the base bar. The first cross bar has a second end pivotally mounted to a first end of the interface bar and the second cross bar has a second end pivotally mounted to a second end of the interface bar. The first and second cross bars are slideably interconnected to one another at a cross point which changes its location as the prosthesis grasps objects of differing sizes and shapes.Type: ApplicationFiled: November 1, 2007Publication date: May 8, 2008Applicant: UNIVERSITY OF SOUTH FLORIDAInventors: Murray E. Maitland, M. Jason Highsmith, Craig Lusk
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Publication number: 20070028714Abstract: A platform actuator includes a substrate, a first, a second, and a third spherical input slider-crank mechanism, wherein each of the first, second, and third spherical input slider crank mechanism is coupled by a first end to said substrate, and a platform is coupled to a second end of each of the first, second, and third spherical input slider-cranks. According to one exemplary embodiment, each of the first, second, and third spherical input slider-crank mechanisms are configured to convert in-plane motion to out-of-plane motion.Type: ApplicationFiled: July 31, 2006Publication date: February 8, 2007Applicant: Brigham Young UniversityInventors: Craig Lusk, Larry Howell
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Publication number: 20070023271Abstract: A spherical bi-stable mechanism includes a planar bi-stable compliant member including an input and an output, and a spherical mechanism member coupled to the output of the first planar bi-stable compliant component. An actuation of the first planar bi-stable compliant member in a first plane is configured to cause the spherical mechanism member to be selectively positioned in a second plane.Type: ApplicationFiled: July 31, 2006Publication date: February 1, 2007Applicant: Brigham Young UniversityInventors: Craig Lusk, Larry Howell