Patents
US 11911298 B2: Robust adaptable foot prosthesis
- Granted
- 2024-02-27
- Filed
- 2021-06-15 application 17347785
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A device is provided to allow adaptation of a prosthetic or robotic foot in the medial-lateral direction, including pronation and supination of the foot using a series of articulations. Articulations are permitted in the disclosed device due to linkage systems positioned at various locations of the prosthetic foot. In particular, the device includes multiple connected linkage systems each including upper and lower portions with an articulating contact surface designed for load carriage and stability. The point of contact between the contact surfaces of each linkage system comprises the position-dependent instantaneous center of rotation of the upper portion with respect to the lower portion. The device also includes a platform coupled between the linkage systems and a base.
Source: PVGPATDIS, file of 2026-04-10 (ipg240227.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| University of Washington 1,041 patents | US company or organization | Seattle, WA | UNIVERSITY OF WASHINGTON State business registration EXACT high confidence: identical full name and state UNIVERSITY OF WASHINGTON Federal lobbying client EXACT high confidence: identical full name and state UNIVERSITY OF WASHINGTON Nonprofit EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
| The Ohio Willow Wood Company 21 patents | US company or organization | Sterling, OH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Murray E. Maitland | Seattle, WA | 5 | PVGPATDIS, file of 2026-04-10 | |
| Matthew M. Wernke | Seattle, WA | 8 | PVGPATDIS, file of 2026-04-10 | |
| Evandro M. Ficanha | Seattle, WA | 6 | PVGPATDIS, file of 2026-04-10 | |
| James M. Colvin | Seattle, WA | 14 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A61F | Filters implantable into blood vessels; prostheses; devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents; orthopaedic, nursing or contraceptive devices; fomentation; treatment or protection of eyes or ears; bandages, dressings or absorbent pads; first-aid kits | A61F2/6607 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2026-10-09 | Security interest Security interest Security interest | WILLOWWOOD GLOBAL LLC signed 2026-10-08 | APOGEM CAPITAL LLC, AS ADMINISTRATIVE AGENT CHICAGO, IL | 76324/900 | PASDL, file of 2026-10-16 |
| 2026-08-25 | Correction Corrective assignment to correct the assignee name previously recorded on reel 75756 frame 939. assignor(s) hereby confirms the assignee/receiving party is willowwood global llc.. | THE OHIO WILLOW WOOD COMPANY signed 2021-12-01 | WILLOWWOOD GLOBAL LLC MT. STERLING, OH | 76287/198 | PASDL, file of 2026-10-11 |
| 2026-08-24 | Assignment Assignment of assignor's interest | THE OHIO WILLOW WOOD COMPANY signed 2019-04-23 | WILLOWWOOD GLOBAL HOLDINGS LLC MT. STERLING, OH | 75756/939 | PASDL, file of 2026-10-15 |
| 2026-07-17 | Release of security interest Release of security interest | APOGEM CAPITAL LLC, AS AGENT signed 2026-07-16 | WILLOWWOOD GLOBAL LLC MT. STERLING, OH | 75305/983 | PASDL, file of 2026-10-15 |
| 2022-04-18 | Security interest Security interest Assignment of intellectual property security agreement | MADISON CAPITAL FUNDING LLC signed 2022-04-01 | APOGEM CAPITAL LLC, AS SUCCESSOR AGENT CHICAGO, IL | 59724/506 | PASDL, file of 2026-10-15 |
| 2021-12-02 | Security interest Security interest Security interest | WILLOWWOOD GLOBAL LLC signed 2021-12-02 | MADISON CAPITAL FUNDING LLC, AS AGENT CHICAGO, IL | 58274/806 | PASDL, file of 2026-10-15 |
| 2021-06-15 | Assignment Assignment of assignor's interest | COLVIN, JAMES M. signed 2020-08-18 FICANHA, EVANDRO M. signed 2020-08-18 WERNKE, MATTHEW M. signed 2020-08-18 | THE OHIO WILLOW WOOD COMPANY MT. STERLING, OH | 56544/840 | ECORSEXC, file of 2026-09-25 |
| 2021-06-15 | Assignment Assignment of assignor's interest | MAITLAND, MURRAY E. signed 2018-03-21 | UNIVERSITY OF WASHINGTON SEATTLE, WA | 56544/782 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.