| 主权项 |
1. A jack stand, comprising:
a stand assembly having a base and a tubular receiving member extending upwardly from the base, the tubular member defining a cavity; a latch extending from the tubular receiving member; a support bar having upper and lower ends and being telescopically housed in the tubular member cavity; the support bar having first, second, and third sides; the first and second support bar sides each having multiple embedded slots; the third support bar side having multiple holes; the support bar holes having angled surfaces such that positioning of the latch in any of the support bar holes restricts the support bar from moving upwardly yet allows the support bar to move downwardly; an automatic lifting device disposed at least partially inside the tubular member cavity, the automatic lifting device imparting an upward force upon the support bar; and a stopper for selectively interacting with the stand assembly and the support bar to restrict the support bar from moving downwardly yet allow the support bar to move upwardly, the stopper passing at least partially inside two of the embedded slots to interact with the support bar. |
