The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2022
Filed:
Dec. 23, 2019
Applicant:
Nabtesco Corporation, Tokyo, JP;
Inventor:
Masahiko Okuda, Tokyo, JP;
Assignee:
NABTESCO CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F 2/64 (2006.01); A61F 2/60 (2006.01); A61F 2/30 (2006.01); A61F 2/68 (2006.01);
U.S. Cl.
CPC ...
A61F 2/64 (2013.01); A61F 2/604 (2013.01); A61F 2/644 (2013.01); A61F 2002/30329 (2013.01); A61F 2002/6818 (2013.01); A61F 2002/6827 (2013.01);
Abstract
A prosthetic leg knee joint includes a thigh connection part that is provided on the thigh side, a lower leg part that is provided rotatably around a knee shaft connected to the thigh connection part, a four-bar link mechanism that sets an instant center S whose relative position with respect to the thigh connection part is substantially constant regardless of the relative position between the thigh connection part and the lower leg part, and a braking unit that brakes the movement of the lower leg part in accordance with the relative position between the instance center S set by the four-bar link mechanism and the lower leg part.