| 摘要 |
A retrieval, storage and discharge device including an inner cylindrical tube having a lower end, an upper end, an outer diameter, and an inner diameter sufficient to receive the balls, an outer cylindrical tube having a lower end, an upper end, an outer diameter, and an inner diameter sufficient to receive the outer diameter of the inner cylindrical tube, circumferentially spaced biased members carried in apertures formed through the lower end of the inner tube, and a collar mounted on the lower end of the outer cylindrical tube having an inner surface with greater diameters and lesser diameters, the collar rotatable with respect to the inner tube between a storage position wherein the biased members are aligned with and urged inward by the lesser diameter of the collar and a discharge position wherein the biased members are aligned with the greater diameter, and therefore permitted to move outwardly.
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