Patents
US 8317877 B2: Prosthetic foot
- Granted
- 2012-11-27
- Filed
- 2008-08-18 application 12193240
- Type
- Utility · 8 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A stable shock absorbing prosthetic foot that transfers energy between heel strike and toe-off. A toe plate is separated from one or more other plates by a bumper assembly located at each of the toe end and heel end of the foot. Certain embodiments of the shock absorbing foot of the present invention are designed for use with a prosthetic ankle. A torsion adapter may also be used to attach a prosthetic foot of the present invention to the remainder of a prosthesis.
Source: PVGPATDIS, file of 2026-04-10 (ipg121127.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| The Ohio Willow Wood Company 21 patents | US company or organization | Mount Sterling, OH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Jeffrey L. Doddroe | Washington Court House, OH | 7 | PVGPATDIS, file of 2026-04-10 | |
| Charles R. Flora | South Salem, OH | 4 | PVGPATDIS, file of 2026-04-10 | |
| Lonnie L. Nolt | Washington Court House, OH | 6 | PVGPATDIS, file of 2026-04-10 | |
| James M. Colvin | Hilliard, OH | 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 |
|---|---|---|---|---|---|
| 2026-07-17 | 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 |
| 2022-01-20 | Release of security interest Release of security interest | MADISON CAPITAL FUNDING LLC, AS AGENT signed 2021-12-02 | WILLOWWOOD GLOBAL LLC MT. STERLING, OH | 58786/492 | 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 |
| 2019-06-05 | Security interest Security interest Security interest | WILLOWWOOD GLOBAL LLC signed 2019-06-05 | MADISON CAPITAL FUNDING LLC, AS AGENT CHICAGO, IL | 49376/71 | PASDL, file of 2026-10-15 |
| 2019-06-03 | Assignment Assignment of assignor's interest | THE OHIO WILLOW WOOD COMPANY signed 2019-06-01 | WILLOWWOOD GLOBAL LLC MT.STERLING, OH | 49352/264 | PASDL, file of 2026-10-15 |
| 2008-08-18 | Assignment Assignment of assignor's interest | COLVIN, JAMES M. signed 2008-08-18 DODDROE, JEFFREY L. signed 2008-08-18 FLORA, CHARLES R. signed 2008-08-18 NOLT, LONNIE L. signed 2008-08-18 | THE OHIO WILLOW WOOD COMPANY MOUNT STERLING, OH | 21404/174 | 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.