| 摘要 |
The invention relates to catapult-type devices for shoe production. The inventive devices comprise a mechanical articulation which acts as the metatarsophalangeal joint. The invention is characterised in that the aforementioned device operates in a similar way to a catapult which launches a weight that follows a parabolic path along the trajectory thereof and which uses the downward inertia as an upward force. Moreover, said devices are characterised in that they are anatomical and orthopaedic and that they comprise a rigid sole (2), an impulse spring heel (3) and a middle sole (4) which balances the body. Furthermore, two combined wedges are characterised in that they are made from synthetic rubber and a spring is characterised in that it forms a system of levers with steel sheets.
|
