US Patent 8141851 Portable vehicle lift

A portable lift including a pair of elongate rails adapted for being located underneath corresponding lift points associated with a vehicle to be elevated. A pair of cross members fixedly securing at opposite ends to spaced apart locations associated with the rails and in order to construct a frame. Scissor jacks are associated with end location of the first and second rails. A drive shaft communicates to one or more of the scissor jacks, and responsive to a converted rotary input, actuates the jacks, separately or in unison, thereby causing the rails to vertically displaced for elevating and/or lowering the vehicle.