1904 – Apparatus for Facilitating Walking or Running – Skorzewski (West Prussian)

(1904 claims) Skorzewski's Apparatus for Facilitating Walking or Running avoids one of the main causes of muscular fatigue, namely the necessity of a man's lifting his centre of gravity a certain height at every step. During the period of descent there is no compensation for the energy expended. The muscles have to remain strained in …

1890 – Assisted-walking Device – Nicholas Yagn (Russian)

Nicholas Yagn, of St.Petersburg, Russia, designed a set of walking, jumping, and running assisted apparatus from 1889-1890. An earlier version used a giant bow spring. The final version used compressed gas bags to store the energy. An example of a passive and human-powered exoskeleton . Patent number: 440684 Filing date: Feb 11, 1890 Issue date: Nov 1890 See …