| 摘要 |
A knee protection device for use by athletes, particularly football players, consisting of a jointed rigid reinforcing bar adapted to be worn at the inside of the knee, with its pivot coaxial to the transverse axis of the knee joint, and extending above and below the joint, the surface of the bar next to the leg being specially conformed to the leg whereby to be firmly positioned when pressed firmly against the leg, a pair of straps encircling the leg and reinforcing bar respectively above and below the knee joint, and pressing the bar firmly against the leg, and an impact-operated strap tightening device interposed in each strap and operable to tighten the strap further whenever the knee receives a blow at its outer side.
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