| 摘要 |
<p>The present invention is directed to a jack (100) preferably comprising: a platform (102); a jack arm stabilizer guide (104) having a first and a second terminal end, the first terminal end being attached to the platform; a jack arm (106); a jack arm stabilizer (108) attached near the first terminal end of the jack arm, and the jack arm stabilizer is preferably slidably connected to the jack arm stabilizer guide (104) so as to allow the jack arm stabilizer (108) to be translocatable between the first and the second terminal ends of the jack arm stabilizer guide; and a vertical lift system (110) operatively connected between the jack arm and the platform which is capable of vertically lifting the jack arm (106), thus translocating the jack arm stabilizer (108) within the jack arm stabilizer guide. The vertical lift system (110) preferably comprises a bellow (602) connected between the platform and the jack arm, wherein the bellow is capable of being inflated causing it to vertically expand, thereby lifting the jack arm (106) and translocating the jack arm stabilizer (108) between the first and the second terminal ends of the jack arm stabilizer guide. The jack preferably further comprises a lock and release system (316, 210, 212) to prevent the jack arm from descending subsequent to the jack arm (106) having been lifted by the vertical lift system (110).</p> |
