| 摘要 |
An adaptor (10) for a jack (12) having a threadable jack shaft (24) and a support platform (18) that rises or lowers when the threadable jack shaft (24) turns. The adaptor (10) has a housing containing a drive motor that is coupled to a drive shaft. The adaptor (10) has an engagement bracket (52) for engaging releasably the adaptor (10) to the jack (12). Spring loaded bolts bias the engagement bracket (52) against the face of the housing. A jack (12) and adaptor (10) in combination and a method for operating a jack (12) having support aligning bars (20) wherethrough a threadable jack shaft (24) rotatably passes to raise or lower a support platform (18) of the jack (12) upon rotation. |
