Hydraulic locking device and systems
US12201540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2021 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | May 9, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/7635
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Technology is described to provide a locking device to control movement of a prosthetic limb. The technology may include a hydraulic damper having a movable damper wall in a hydraulic housing of the hydraulic damper, and the movable damper wall may form a first chamber and second chamber in the hydraulic damper. A first fluid channel may be coupled to the first chamber. In addition, a latch may be in fluid communication with the first fluid channel. A poppet valve can be configured to set the latch in an open position when pressure is reduced in the first chamber and to stop fluid movement when pressure is increased in the first chamber. A second fluid channel between the second chamber and the latch may enable fluid to flow between the second chamber and the latch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.