公开(公告)号：US20180289510A1

公开(公告)日：2018-10-11

申请号：US15948270

申请日：2018-04-09

Applicant: Worcester Polytechnic Institute

Inventor： Mitchell K. Muller ,  Marko B. Popovic

IPC: A61F2/58 ,  A61F2/68 ,  A61F2/76

Abstract: A shoulder prosthesis restores the complex dynamics of the arm for whole-arm amputees. While most prosthesis for arm amputees focus on restoring the user's capabilities for dexterous manipulation, the disclosed prosthesis remains affixed to the shoulder and exerts a moment on the user's trunk similar to that of the arm during walking for dynamic motion assistance. The prosthesis includes a rotating, gimbaled mass oriented based on gait and stride for emulating forces that would have been provided by the amputee arm. The size, ease of use, and relatively low cost manufacture of the proposed device makes it an attractive complement or alternative to standard prosthesis, particularly for amputees who pursue rigorous or prolonged physical activity.

公开(公告)号：US20180271641A1

公开(公告)日：2018-09-27

申请号：US15897428

申请日：2018-02-15

Applicant: Worcester Polytechnic Institute

Inventor： Sakthikumar Ambady ,  Alexandra Czamara ,  Anne McLoughlin ,  Kyra McNamara ,  Lindsay Schneider ,  Emily Viloudaki ,  Kristin Gallagher ,  Gabriela Meza ,  Nicholas Brocato ,  Robert J. Meislin

IPC: A61F2/08 ,  B33Y80/00

CPC classification number: A61F2/0811 ,  A61F2002/0829 ,  A61F2002/0835 ,  A61F2002/087 ,  A61F2210/0004 ,  B33Y80/00

Abstract: A biocompatible, biodegradable surgical fastening device employs opposed engagement surfaces having receptacles and protrusions, in which the receptacles are responsive to the protrusions on the opposed engagement surface. The fastening device has a generally planar construction defining the engagement surface, such that each engagement surface has a proximate end for engaging the opposed engagement surface, and a distal end for attachment to an anatomical structure. The distal end of two devices each connect to anatomical structures to be joined, and the engagement surfaces joined to each other at the proximate end to complete the repair. The distal end of the engagement surface defines a flexible attachment portion having a lateral attachment width, the lateral width configured for securement to the anatomical structure across a nonlinear disposition of the lateral width. The flexible lateral width conforms around an irregular shape of an anatomical structure such as a tendon, ligament or bone.

公开(公告)号：US20180263586A1

公开(公告)日：2018-09-20

申请号：US15924946

申请日：2018-03-19

Applicant: Worcester Polytechnic Institute

Inventor： Travis F. Henchie ,  Karen L. Troy

IPC: A61B6/00 ,  A61B6/03 ,  G06T7/00 ,  G06T19/20

CPC classification number: A61B6/5217 ,  A61B6/032 ,  A61B6/505 ,  G06T7/0014 ,  G06T19/00 ,  G06T19/20 ,  G06T2207/10081 ,  G06T2207/30008 ,  G06T2210/41 ,  G06T2219/2004 ,  G06T2219/2016

Abstract: In some embodiments, a method for determining a deformity in a bone surface comprises performing a scan of a healthy bone and a diseased bone; creating 3-dimensional (3D) representations of a current surface of the diseased bone; constructing an estimated healthy surface in 3D for the diseased bone based on the surface of the healthy bone; and identifying a deformity in the diseased bone by comparing the estimated healthy surface to the current surface of the diseased bone. In some embodiments, the scan is performed using high resolution peripheral quantitative computed tomography (HR-pQCT).

公开(公告)号：US20180244585A1

公开(公告)日：2018-08-30

申请号：US15903565

申请日：2018-02-23

Applicant: Worcester Polytechnic Institute

Inventor： Nima Rahbar ,  Suzanne Frances Scarlata ,  Jessica Anne Rosewitz

IPC: C04B41/50 ,  C04B41/45

CPC classification number: C04B41/5012 ,  C04B41/009 ,  C04B41/4535 ,  C04B41/501 ,  C04B41/65 ,  C04B2103/0001 ,  C04B2111/72 ,  C12N9/88 ,  C12P3/00 ,  C12Y402/01001 ,  C04B28/02 ,  C04B41/455 ,  C04B2103/001

Abstract: An aqueous solution of carbonic anhydrase and calcium chloride is contacted with a cementitious surface defining at least one opening or fissure in the presence of ambient carbon dioxide to thereby cause the calcium chloride and carbon dioxide to react, whereby calcium carbonate precipitate from the solution and seals the opening or fissure.

公开(公告)号：US20180149356A1

公开(公告)日：2018-05-31

申请号：US15825514

申请日：2017-11-29

Applicant: Worcester Polytechnic Institute

Inventor： Shivaprasad Arava ,  Kemal S. Arsava ,  Ali S. Rangwala ,  Hayri Sezer ,  Apoorv Walawalkar ,  Vasudevan Raghavan

IPC: F23G7/05 ,  F23G5/00

CPC classification number: F23G7/05 ,  F23G5/008 ,  F23G7/14 ,  F23G2205/12 ,  F23G2206/10 ,  F23G2206/203 ,  F23G2207/101 ,  F23N2041/18

Abstract: A toxic waste incinerator is capable of enhanced combustion of hazardous waste (oil contaminated sand, human waste, garbage, etc.) utilizing immersed non-combustible and thermally conductive objects for increasing heat feedback from the flames to the unburned fuel, while air inlets are used to optimize the air entrainment rate to enhance the burning efficiency. The burning rate of a fluidic mass such as a sand-oil mixture is enhanced using immersed conductive objects (copper rods) which enable rapid heat-up of the flame exposed to the upper surface of the rod and transmits heat back into the sand. Consequent conduction of heat to the porous media through the lower portion of the immersed rod significantly increases vaporization and therefore the burning rate. Incineration may be performed on a transient, exigent basis as with hazardous waste and oil spills, or as part of a permanent fixture for receiving an ongoing waste stream.

公开(公告)号：US09905052B2

公开(公告)日：2018-02-27

申请号：US14988286

申请日：2016-01-05

Applicant: Worcester Polytechnic Institute

Inventor： Robert W. Lindeman

IPC: G06T19/00 ,  A63F13/25 ,  A63F13/213 ,  A63F13/2145 ,  G06F3/147 ,  G06F1/16 ,  G06F3/01 ,  G02B27/01

CPC classification number: G06T19/006 ,  A63F13/213 ,  A63F13/2145 ,  A63F13/25 ,  A63F2300/6653 ,  A63F2300/8082 ,  G02B27/0172 ,  G02B27/0176 ,  G02B2027/0138 ,  G02B2027/014 ,  G02B2027/0178 ,  G06F1/163 ,  G06F3/011 ,  G06F3/147

Abstract: Systems and methods are provided for controlling immersiveness of head-worn displays. A virtual-reality headset includes at least one panel on the virtual reality headset that is capable of being adjusted to increase or decrease opacity of the panel. A control device in communication with the at least one panel is capable of adjusting the opacity of the at least one panel in response to a command to increase or decrease the opacity of the panel so that a system user's immersiveness in the virtual world displayed by the virtual-reality headset is capable of being automatically controlled while the system user wears the virtual-reality headset.

公开(公告)号：US20180032816A1

公开(公告)日：2018-02-01

申请号：US15662965

申请日：2017-07-28

Applicant: WORCESTER POLYTECHNIC INSTITUTE

Inventor： Andrew C. Trapp ,  Soussan Djamasbi ,  Wen Liu

IPC: G06K9/00 ,  G06K9/62 ,  G06T7/73 ,  G06F3/01

CPC classification number: G06K9/00617 ,  G06F3/013 ,  G06K9/00 ,  G06K9/00604 ,  G06K9/0061 ,  G06K9/6218 ,  G06K9/6222 ,  G06T7/74

Abstract: A fixation identification system includes an eye-tracking device and a fixation identification device disposed in electrical communication with the eye-tracking device. The fixation identification device includes a controller having a memory and a processor, the controller being configured to identify each gaze position data element received from the eye-tracking device as one of fixation gaze position data and saccade gaze position data, each gaze position data element corresponding to a visual location associated with a field of view at a corresponding time; identify at least one fixation region associated with the fixation gaze position data; adjust a number of fixation gaze position data elements associated with the at least one fixation region; and generate a density optimized fixation region based upon the adjusted number of fixation gaze position data elements.

公开(公告)号：US09879767B2

公开(公告)日：2018-01-30

申请号：US14903126

申请日：2014-07-10

Applicant: Worcester Polytechnic Institute

Inventor： Marko B. Popovic ,  Christopher J. Berthelette ,  Matthew Dipinto ,  James D. Sareault ,  Thane R. Hunt

IPC: F16H33/02 ,  F03G1/02 ,  F03G3/08

CPC classification number: F16H33/02 ,  F03G1/02 ,  F03G3/08

Abstract: Actuation systems and methods are disclosed. Such systems may comprise a motor having a drive shaft, one or more modules coupled to the drive shaft, each module comprising one or more energy storage elements and one or more actuating members connecting the one or more energy storage elements to one or more degrees of freedom, which are configured to actuate in response to a discharge of energy from the one or more energy storage element, and a plurality of clutches associated with each module to couple the energy storage element of the module to the drive shaft of the motor and to control an energy state of the energy storage element independent of energy storage elements of other modules.

公开(公告)号：US09857245B2

公开(公告)日：2018-01-02

申请号：US15064872

申请日：2016-03-09

Applicant: Worcester Polytechnic Institute

Inventor： Cagdas D. Onal ,  Selim Ozel

IPC: G01L1/12 ,  B25J13/08 ,  B25J15/12 ,  G01L5/22

CPC classification number: G01L1/122 ,  B25J13/088 ,  B25J15/12 ,  G01L5/226 ,  Y10S901/46

Abstract: A robotic sensing and touch apparatus detects gradual deformations in a resilient surface, in contrast to conventional rigid member displacement. Hall effect sensors coupled to rare-earth magnets in a deformable base allow sensing of surface curvature and compression against grasped objects. The deformable base, such as a silicone mold or other resilient encapsulation, fixes a magnetic source and an opposed Hall effect sensor. Calibration of a received magnetic field is defined by a sensor element voltage in an “at rest” (undeformed) state, and at successive degrees of deformation resulting from compression of the deformable base that draws the magnet in different orientations relative to the Hall effect sensor. An array of magnet and sensor element pairs allows relative sensing over an area for detecting curvature of a translated or articulated member, or engagement with a curved surface.

公开(公告)号：US09707422B2

公开(公告)日：2017-07-18

申请号：US14638229

申请日：2015-03-04

Applicant: Worcester Polytechnic Institute

Inventor： Brian E. Elias ,  Robert G. Zalosh ,  Ali S. Rangwala

IPC: A62C3/07 ,  A62C3/06 ,  A62C2/06 ,  B60K15/04 ,  A62C4/00

CPC classification number: A62C3/065 ,  A62C4/00

Abstract: A volatile liquid storage container has combustion resistance properties from a flexible sock or tube constructed of fire resistant fibers coupled to a neck of the storage container to prevent flame flash-back into the storage container. The storage container defines an enclosed volume having an orifice in the container material leading to a neck for pouring and filling the enclosed volume for exchanging the contents therein. The tube is elongated and surrounds a circumference of the orifice for engaging any ignition source entering through the orifice. The flexible nature of the tube or sock allows it to extend to an opposed interior surface of the enclosed volume, and ensures that the tube or sock is immersed in the fluid for encircling any ignition path to the volatile liquid without interfering with an ability to pour or refill the container.