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:
Sep. 28, 2021
Filed:
Dec. 15, 2020
Agency for Defense Development, Daejeon, KR;
Gwang Tae Kim, Daejeon, KR;
Tae Woo Park, Daejeon, KR;
Young June Shin, Daejeon, KR;
Man Bok Hong, Daejeon, KR;
Young Cheol Kim, Daejeon, KR;
Byoung Ju Lee, Daejeon, KR;
Agency for Defense Development, Daejeon, KR;
Abstract
A passive ankle assist apparatus with a torsional coil spring for assisting an ankle joint of a user in a state of being mounted on a shoe worn by the user includes a shank frame mountable on a shank of the user, the shank frame including a guide hole, a torsional coil spring including a coil part provided in a state of being wound around a central portion a plurality of times, the torsional coil spring slidable along the guide hole, a support part configured to support the coil part, and a coupling frame configured to support the support part, the coupling frame couplable to the shoe.