| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8381805eba6d034fc77bd230dd02e6e2 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-5033
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-5075
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-5004
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-6678
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-763
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-5079
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-509
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-503
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-5073
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-6657
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-6818
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2-605
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-5006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-7625
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-701
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-704
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-7645
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-7635
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2002-764
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2-68 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B62D57-032
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2-6607
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B25J19-0008
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2-70
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61F2-60 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F2-76
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F2-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F2-50 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B62D57-032
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F2-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F2-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F2-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F2-70
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B25J19-00 |
| filingDate |
2019-07-01^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2022-03-15^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_da00b18753d1699bc7e9ca895e8cdf83
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d5e5fe363ecd8c9ebb891235473b4572
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5f695fb1ddd3f8fab50b782bb8fbc7b7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94ed76a0be09e6db806c9158b4feb24d |
| publicationDate |
2022-03-15^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-11273060-B2 |
| titleOfInvention |
Artificial ankle-foot system with spring, variable-damping, and series-elastic actuator components |
| abstract |
An artificial foot and ankle joint consists of a curved leaf spring foot member having a heel extremity and a toe extremity, and a flexible elastic ankle member that connects the foot member for rotation at the ankle joint. An actuator motor applies torque to the ankle joint to orient the foot when it is not in contact with the support surface and to store energy in a catapult spring that is released along with the energy stored in the leaf spring to propel the wearer forward. A ribbon clutch prevents the foot member from rotating in one direction beyond a predetermined limit position. A controllable damper is employed to lock the ankle joint or to absorb mechanical energy as needed. The controller and sensing mechanisms control both the actuator motor and the controllable damper at different times during the walking cycle for level walking, stair ascent, and stair descent. |
| priorityDate |
2005-03-31^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |