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1. 发明授权

US09783978B1 Shape-morphing space frame apparatus using linear bistable elements 有权
公开(公告)号：US09783978B1
公开(公告)日：2017-10-10
申请号：US15224995
申请日：2016-08-01
申请人： Ahmad Alqasimi , Craig Lusk
发明人： Ahmad Alqasimi , Craig Lusk
IPC分类号： E04B1/343 , E04B1/344 , E04B1/19
CPC分类号： E04B1/3441 , E04B1/1903 , E04B1/34384 , E04B2001/1942 , E04B2001/1957 , F16S3/08
摘要： 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.

2. 发明授权

US10330144B1 Linear bi-stable compliant crank-slider-mechanism 有权
公开(公告)号：US10330144B1
公开(公告)日：2019-06-25
申请号：US16117979
申请日：2018-08-30
申请人： Ahmad Alqasimi , Craig Lusk
发明人： Ahmad Alqasimi , Craig Lusk
IPC分类号： F16C11/12 , F16C7/06
摘要： 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.

3. 发明授权

US10473152B1 Linear bi-stable compliant crank-slider-mechanism 有权
公开(公告)号：US10473152B1
公开(公告)日：2019-11-12
申请号：US15198627
申请日：2016-06-30
申请人： Ahmad Alqasimi , Craig Lusk
发明人： Ahmad Alqasimi , Craig Lusk
IPC分类号： F16C11/12 , F16C7/06
摘要： 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.

4. 发明授权

US10006196B1 Shape-morphing space frame apparatus using linear bistable elements 有权
公开(公告)号：US10006196B1
公开(公告)日：2018-06-26
申请号：US15691110
申请日：2017-08-30
申请人： Ahmad Alqasimi , Craig Lusk
发明人： Ahmad Alqasimi , Craig Lusk
IPC分类号： E04B1/34 , E04B1/344 , E04B1/343 , E04B1/19
CPC分类号： E04B1/3441 , E04B1/1903 , E04B1/34384 , E04B2001/1942 , E04B2001/1957 , F16S3/08
摘要： 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.

5. 发明申请

US20170145681A1 SHAPE-MORPHING SPACE FRAME APPARATUS USING UNIT CELL BISTABLE ELEMENTS 有权
公开(公告)号：US20170145681A1
公开(公告)日：2017-05-25
申请号：US15197203
申请日：2016-06-29
申请人： Ahmad Alqasimi , Craig Lusk
发明人： Ahmad Alqasimi , Craig Lusk
IPC分类号： E04B1/344 , E04B1/343 , E04B1/19
CPC分类号： E04B1/3441 , E04B1/1903 , E04B1/34384 , E04B2001/1957 , F16S3/08
摘要： 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.

6. 发明申请

US20190323550A1 LINEAR BI-STABLE COMPLIANT CRANK-SLIDER-MECHANISM 审中-公开
公开(公告)号：US20190323550A1
公开(公告)日：2019-10-24
申请号：US16437778
申请日：2019-06-11
申请人： Ahmad Alqasimi , Craig Lusk
发明人： Ahmad Alqasimi , Craig Lusk
IPC分类号： F16C11/12 , F16C7/06
摘要： 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.

7. 发明授权

US09783977B2 Shape-morphing space frame apparatus using unit cell bistable elements 有权
公开(公告)号：US09783977B2
公开(公告)日：2017-10-10
申请号：US15197203
申请日：2016-06-29
申请人： Ahmad Alqasimi , Craig Lusk
发明人： Ahmad Alqasimi , Craig Lusk
IPC分类号： E04B1/34 , E04B1/344 , E04B1/19 , E04B1/343
CPC分类号： E04B1/3441 , E04B1/1903 , E04B1/34384 , E04B2001/1957 , F16S3/08
摘要： 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.

8. 发明授权

US10336028B1 Waterproof shape-shifting surface 有权
公开(公告)号：US10336028B1
公开(公告)日：2019-07-02
申请号：US15222258
申请日：2016-07-28
申请人： Andrew Jason Katz , Craig Lusk
发明人： Andrew Jason Katz , Craig Lusk
IPC分类号： B32B3/06 , B32B3/26 , B32B7/08 , B32B7/05 , E04B1/34 , E04B1/66 , B62D29/04 , F16L11/12
摘要： 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.

9. 发明授权

US07614673B2 Conforming artificial finger mechanism 有权
标题翻译：符合人工手指机制
公开(公告)号：US07614673B2
公开(公告)日：2009-11-10
申请号：US11933806
申请日：2007-11-01
申请人： Murray E. Maitland , M. Jason Highsmith , Craig Lusk
发明人： Murray E. Maitland , M. Jason Highsmith , Craig Lusk
IPC分类号： B25J15/08
CPC分类号： A61F2/588 , A61F2/586 , A61F2/68 , A61F2/72 , A61F2002/6827 , A61F2002/7635 , Y10S294/902
摘要： 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.
摘要翻译：假手指包括交叉的四（4）连杆系统，其具有由基座条形成的基部，两个横杆和接合待接合物体的接合杆。基座杆被固定在被截肢者的人造手指上。第一横杆具有枢转地安装到基座杆的第一端的第一端，并且第二横杆具有枢转地安装到基座杆的第二端的第一端。第一横杆具有枢转地安装到接口杆的第一端的第二端，并且第二横杆具有枢转地安装到接口杆的第二端的第二端。第一和第二横杆在交叉点处彼此可滑动地互相连接，该交叉点随着假体抓住不同尺寸和形状的物体而改变其位置。

10. 发明申请

US20080109084A1 Confirming Artificial Finger Mechanism 有权
标题翻译：确认人工手指机制
公开(公告)号：US20080109084A1
公开(公告)日：2008-05-08
申请号：US11933806
申请日：2007-11-01
申请人： Murray E. Maitland , M. Jason Highsmith , Craig Lusk
发明人： Murray E. Maitland , M. Jason Highsmith , Craig Lusk
IPC分类号： A61F2/42
CPC分类号： A61F2/588 , A61F2/586 , A61F2/68 , A61F2/72 , A61F2002/6827 , A61F2002/7635 , Y10S294/902
摘要： 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.
摘要翻译：假手指包括交叉的四（4）连杆系统，其具有由基座条形成的基部，两个横杆和接合待接合物体的接合杆。基座杆被固定在被截肢者的人造手指上。第一横杆具有枢转地安装到基座杆的第一端的第一端，并且第二横杆具有枢转地安装到基座杆的第二端的第一端。第一横杆具有枢转地安装到接口杆的第一端的第二端，并且第二横杆具有枢转地安装到接口杆的第二端的第二端。第一和第二横杆在交叉点处彼此可滑动地互相连接，该交叉点随着假体抓住不同尺寸和形状的物体而改变其位置。

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