Patent ID: 7694940

Claim:
A jack apparatus comprising: a hydraulic jacking cylinder including an outer housing cylinder; an inner piston cylinder disposed in the outer cylinder; a piston reciprocally mounted in the inner cylinder; the space between the outer cylinder and the inner cylinder defining a reservoir for hydraulic fluid; a space in the inner cylinder underneath the piston defining a piston cavity for hydraulic fluid; at least one pump for moving hydraulic fluid from the reservoir to the piston cavity; and a conduit including a first end and a second end, the first end being open to receive hydraulic fluid, the second end being in communication with the at least one pump, the conduit being of a length sufficient for moving to low elevations in the reservoir in accordance with the orientation of the hydraulic cylinder for continuously providing hydraulic fluid to the at least one pump from the reservoir from any orientation of the hydraulic cylinder, at least one aperture extending through the conduit at the first end, wherein the conduit includes a flexible tube, wherein the tube includes a first end and a second end corresponding to the first end and the second end of the conduit, wherein the conduit additionally comprises a weighted tip at the first end of the tube for sinking the tube in the reservoir, the tip being open at an edge, wherein the second end of the tube is fixed in the reservoir and in communication with the at least one pump, and wherein the at least one aperture is positioned at and extends inward from the edge of the tip.