Patents by Inventor Marcus William Powell

Marcus William Powell 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).

  • Publication number: 20260069443
    Abstract: A sole attachment assembly for attachment to an orthotic bar having a sole to retain a shoe of a user and a quick release member to couple to an orthotic bar. The sole includes a sole body, a release member receiver, a platform on the receiver, guide wings, a centering projection, and a release button barrier spanning between the guide wings. The quick release member includes a release member body, wings extending laterally from the release member body to slide within the guide wings, a locking tab to keep the quick release member coupled to the shoe sole by interfacing with the quick release button barrier, a locating recess in a top potion of the body configured to provide enhanced stability by interfacing with the platform on the sole, and a centering notch at the front of the body configured to interface with the centering projection on the sole.
    Type: Application
    Filed: November 17, 2025
    Publication date: March 12, 2026
    Applicant: MD Orthopaedics, Inc.
    Inventors: Lucas J. Mitchell, Marcus William Powell, Shawn Edward Twyman
  • Patent number: 12508140
    Abstract: A reversible tensioning device for an orthotic that includes: a cover; an insert rotatably disposed within the cover; a slot within the cover; a peg fixedly disposed on the insert and slidably located within the slot on the cover, the peg configured to slide between a first end portion and a second end portion of the slot; a spring fixedly attached to the cover and the insert and configured to urge the cover and the insert in opposite rotational directions; a first flange surface on the cover; and a second flange surface on the insert and facing an opposite direction from the first raised surface. The first flange surface and the second flange surface are configured to operably couple with third and fourth flange surfaces on an orthotic device to provide opposing forces on the reversible tensioning device.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: December 30, 2025
    Assignee: MD Orthopaedics, Inc.
    Inventors: Lucas J. Mitchell, Marcus William Powell, Shawn Edward Twyman
  • Patent number: 12496207
    Abstract: A sole attachment assembly for attachment to an orthotic bar having a sole to retain a shoe of a user and a quick release member to couple to an orthotic bar. The sole includes a sole body, a release member receiver, a platform on the receiver, guide wings, a centering projection, and a release button barrier spanning between the guide wings. The quick release member includes a release member body, wings extending laterally from the release member body to slide within the guide wings, a locking tab to keep the quick release member coupled to the shoe sole by interfacing with the quick release button barrier, a locating recess in a top portion of the body configured to provide enhanced stability by interfacing with the platform on the sole, and a centering notch at the front of the body configured to interface with the centering projection on the sole.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: December 16, 2025
    Assignee: MD Orthopaedics, Inc.
    Inventors: Lucas J. Mitchell, Marcus William Powell, Shawn Edward Twyman
  • Publication number: 20250041091
    Abstract: A reversible tensioning device for an orthotic that includes: a cover; an insert rotatably disposed within the cover; a slot within the cover; a peg fixedly disposed on the insert and slidably located within the slot on the cover, the peg configured to slide between a first end portion and a second end portion of the slot; a spring fixedly attached to the cover and the insert and configured to urge the cover and the insert in opposite rotational directions; a first flange surface on the cover; and a second flange surface on the insert and facing an opposite direction from the first raised surface. The first flange surface and the second flange surface are configured to operably couple with third and fourth flange surfaces on an orthotic device to provide opposing forces on the reversible tensioning device.
    Type: Application
    Filed: November 30, 2022
    Publication date: February 6, 2025
    Inventors: Lucas J. Mitchell, Marcus William Powell, Shawn Edward Twyman
  • Publication number: 20250032300
    Abstract: An assembly for locating footwear to maintain a user's feet in a predetermined therapeutic position, including a bar, typically a unitary curved bar forming an uninterrupted arc, where the bar has a first end and a second end, a first inner locating position on the first end, a first outer locating position on the first end, a second inner locating position on the second end, and a second outer locating position on the second end. Each of the locating positions typically includes a plurality of spaced apart ribs at least partially surrounding in a radial arrangement extending about a center point of a connection hole.
    Type: Application
    Filed: November 30, 2022
    Publication date: January 30, 2025
    Inventors: Lucas J. Mitchell, Marcus William Powell, Shawn Edward Twyman, Jeffrey Allan Dassow
  • Publication number: 20250025323
    Abstract: A sole attachment assembly for attachment to an orthotic bar having a sole to retain a shoe of a user and a quick release member to couple to an orthotic bar. The sole includes a sole body, a release member receiver, a platform on the receiver, guide wings, a centering projection, and a release button barrier spanning between the guide wings. The quick release member includes a release member body, wings extending laterally from the release member body to slide within the guide wings, a locking tab to keep the quick release member coupled to the shoe sole by interfacing with the quick release button barrier, a locating recess in a top potion of the body configured to provide enhanced stability by interfacing with the platform on the sole, and a centering notch at the front of the body configured to interface with the centering projection on the sole.
    Type: Application
    Filed: November 30, 2022
    Publication date: January 23, 2025
    Inventors: Lucas J. Mitchell, Marcus William Powell, Shawn Edward Twyman
  • Patent number: 11925572
    Abstract: A foot orthotic having a foot support where the foot support includes a thermoplastic outer shell, a closed cell foam liner within the outer shell, and a tongue to secure the user's foot within the foot support. The orthotic also typically has includes a lower leg support that includes a thermoplastic outer shell, a closed cell foam liner within the outer shell, and a strap to secure the orthotic to the user's leg within the lower leg support. A cinching mechanism that typically has a rotatable tightening knob is on the lower leg support, and a tightening cable coupled to the rotatable tightening knob and operably connected to the foot support.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: March 12, 2024
    Assignee: DOXA MEDICAL, LLC
    Inventors: Matthew John Prihoda, John Ray Mitchell, Andy Michael Smith, Marcus William Powell, Shawn Edward Twyman
  • Publication number: 20210205114
    Abstract: A foot orthotic having a foot support where the foot support includes a thermoplastic outer shell, a closed cell foam liner within the outer shell, and a tongue to secure the user's foot within the foot support. The orthotic also typically has includes a lower leg support that includes a thermoplastic outer shell, a closed cell foam liner within the outer shell, and a strap to secure the orthotic to the user's leg within the lower leg support. A cinching mechanism that typically has a rotatable tightening knob is on the lower leg support, and a tightening cable coupled to the rotatable tightening knob and operably connected to the foot support.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 8, 2021
    Inventors: MATTHEW JOHN PRIHODA, JOHN RAY MITCHELL, ANDY MICHAEL SMITH, MARCUS WILLIAM POWELL, SHAWN EDWARD TWYMAN
  • Patent number: 10470914
    Abstract: An AFO for use in the Ponseti method which is bar-less and provides for readily interchangeable structures for providing differing articulation resistance. In one embodiment, the readily interchangeable structure is a flexible member achieving connection between and the majority of the separation between the shoe and the calf engaging structure. In another embodiment, an articulated arm with two rigid segments joined at a spring loaded hinge, with interchangeable spring canisters is used.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: November 12, 2019
    Inventors: Marcus William Powell, John R Mitchell
  • Publication number: 20180311065
    Abstract: An AFO for use in the Ponseti method which is bar-less and provides for readily interchangeable structures for providing differing articulation resistance. In one embodiment, the readily interchangeable structure is a flexible member achieving connection between and the majority of the separation between the shoe and the calf engaging structure. In another embodiment, an articulated arm with two rigid segments joined at a spring loaded hinge, with interchangeable spring canisters is used.
    Type: Application
    Filed: April 27, 2018
    Publication date: November 1, 2018
    Inventors: Marcus William Powell, John R. Mitchell
  • Patent number: 5884443
    Abstract: A protective cover for the ends of reinforcing bars has a cylindrical tube having upper and lower ends. A cap is mounted on the upper end of the tube and is comprised of a continuous circular wall extending upwardly and outwardly from the upper end of the tube, with a bottom covering the top of the tube. A post extends upwardly from the center of the bottom, and a plurality of spaced rib elements are secured to and extend radially outwardly from the post for connection to the wall. A canopy is secured to the upper edge of the wall and extends slightly downwardly therefrom. The canopy has a circular perimeter which has a downwardly extending circular flange extending therearound. The ribs are tied together by secondary ribs. Friction bars are located within the tube to create friction between the tub and a bar upon which it is mounted.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: March 23, 1999
    Assignee: Lomont Molding, Inc.
    Inventors: Jerry D. Schimmelpfennig, Marcus William Powell, Richard Sylvan, Douglas James Spenner
  • Patent number: D416630
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: November 16, 1999
    Assignee: Lomont Molding, Inc.
    Inventors: Jerry D. Schimmelpfennig, Marcus William Powell, Richard Sylvan, Douglas James Spenner
  • Patent number: D416631
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: November 16, 1999
    Assignee: Lomont Molding, Inc.
    Inventors: Jerry D. Schimmelpfennig, Marcus William Powell, Richard Sylvan, Douglas James Spenner