Abstract: A telescopic rod retainer is disclosed. A protecting sleeve is located above a tip-end post of an outer tube and a press resists against the protecting sleeve to prevent it from sliding down. When the press is pressed inwards, the press moves along an inner groove in the protecting sleeve and then to a buckling hole in the protecting sleeve so as to be ejected out so that the tip-end post is protected. In storing the rod retainer; the inner tube is rotated to further move into the outer tube. When the outer tube is near the buckling ring, the inner tube is further rotated so that a threaded rod at the lower end of the inner tube is rotated into the buckling ring. When the buckling ring approaches the inner rod body, the buckling ring will expand so as to be tightly combined with the outer tube.

Abstract: A crutch includes an upper portion and a lower portion pivotally secured together with a shaft, at suitable angular position, and foldable to compact folding structure that is excellent for storing and transportation purposes. The lower and the upper portions of the crutch each may include a number of teeth engageable with each other, and a fastener to force the teeth toward and to engage with each other, and thus to adjustably secure the upper and the lower portions of the crutch together. The upper portion of the crutch includes a hand grip adjustably secured between two posts.