| 摘要 |
A corkscrew 300 with a threaded bit 124 for engaging a stopper 60, mounted on a shaft 318 which is threaded of opposite handedness to the bit336. The shaft is connected through at least one rack and pinion mean(s) 330 to lever arm(s) 328. The pinion(s) of the lever arm(s) are fully meshed with the thread of the shaft so that as the handle 120 is turned the bit is screwed into the stopper 60 and the arm(s) is(are) raised. Depression of the arms forces the shaft 318 to move up and draw the stopper 60 from the neck of the vessel 50. The reverse-threading of the shaft with respect to the bit causes amplification of the axial distance the stopper is drawn through compared to the axial distance it travelled when being screwed into the stopper, thus allowing for easier removal. |
