Hydra-lift system

Claim 2

A vehicular mounted jacking system to controllably raise and lower a portion of a wheeled vehicle relative to the terrain on which it is supported, comprising: a plurality of multi-chambered, telescoping hydraulic jacks attached to the vehicle in proximity to its wheels in an essentially vertical orientation relative to the supporting terrain for lifting a portion of the vehicle relative to the supporting terrain; a hydraulic power means coupled in communication with said multi-chambered, telescoping hydraulic jacks for providing a hydraulic fluid under pressure to actuate said hydraulic jacks; manifold means having valves disposed in fluid communication between said jacks and said hydraulic power means; control means for selectively activating said valves; and said multi-chambered, telescoping hydraulic jack further comprising: an outer cylindrical body for mounting to the vehicle, said outer cylindrical body formed having a central bore; an inner cylindrical body mounted concentrically within the bore of said outer cylindrical body, said inner cylindrical body being movable relative to said outer cylindrical body and having a central bore; a rod mounted concentrically within the bore of said inner cylindrical body having an outer end for engaging the supporting surface, said rod being movable relative to said inner cylindrical body and extending through said sealable axial opening in said inner cylindrical body; an outer chamber formed between the bore of the outer cylindrical body and said rod; an inner chamber formed within the bore of the inner cylindrical body between said rod; a bidirectional outer port means coupled in fluid communication with the hydraulic power means and the outer chamber for communicating the hydraulic fluid into and out of the outer chamber; and, a bidirectional inner port means coupled in fluid communication with the hydraulic power means and the inner chamber for communicating the hydraulic fluid into and out of the inner chamber; whereby the outer chamber is controllably filled with the hydraulic fluid under pressure to move the inner cylindrical body and rod into an extended position engaging the supporting surface and to raise a portion of the vehicle relative to the supporting surface and, alternatively, the inner chamber is controllably filled with the hydraulic fluid under pressure to move the inner cylindrical body and rod into a retracted position and draining the hydraulic fluid from said outer chamber.

Claim 3

The vehicular mounted jacking system of claim 1, including a foot plate attached to said rod for distributing the vehicle weight over a larger area of the supporting terrain.

Claim 4

The vehicular mounted jacking system of claim 2, wherein said foot plate is pivotally mounted on said outer end of the rod.

Claim 5

The vehicular mounted jacking system of claim 1, wherein said hydraulic power means is a power steering pump for the vehicle.

Claim 6

In a vehicular mounted jack assembly for controllably raising and lowering a portion of a wheeled vehicle, a jack mounted on the vehicle, jack control means for selectively activating said jack, and hydraulic power means in communication with said jack for providing a hydraulic fluid under pressure, the hydraulic jack comprising: an outer cylindrical body for mounting on the vehicle; said outer cylindrical body formed having a central bore with one end sealed; an inner cylindrical body mounted concentrically within the bore of said outer cylindrical body; said inner cylindrical body being movable relative to said outer cylindrical body; said inner cylindrical body formed having a central bore with one end being perforated, and an opposite end having a central, sealable axial opening; a rod mounted concentrically within the bore of said inner cylindrical body having an outer end for engaging the supporting surface; said rod being movable relative to said inner cylindrical body; said rod extending through said sealable axial opening in said inner cylindrical body; an inner end of said rod being in a movable sealed relationship to said bore of the inner cylindrical body; an outer chamber formed between said sealed end of the bore of the outer cylindrical body and the sealed end of the rod mounted within the bore of the inner cylindrical body; an inner chamber formed within the bore of the inner cylindrical body between the sealed end of the rod mounted within the bore of the inner cylindrical body and the opposite end of the inner cylindrical body having the central axial opening; a bidirectional outer port means in communication with the hydraulic power means and the outer chamber for communicating hydraulic fluid into and out of the outer chamber; and, a bidirectional inner port means in communication with the hydraulic power means and the inner chamber for communicating hydraulic fluid into and out of the inner chamber; whereby the outer chamber is controllably filled with the hydraulic fluid under pressure to move the inner cylindrical body and rod into an extended position engaging the supporting surface and to raise a portion of the vehicle relative to the supporting surface and, alternatively, the inner chamber is controllably filled with the hydraulic fluid under pressure to move the inner cylindrical body and rod into a retracted position and draining the hydraulic fluid from said outer chamber.

Claim 7

In a vehicular mounted jack assembly for controllably raising and lowering a portion of a wheeled vehicle, a jack mounted on the vehicle, jack control means for selectively activating said jack, and hydraulic power means in communication with said jack for providing a hydraulic fluid under pressure, the hydraulic jack comprising: an outer cylindrical body for mounting on the vehicle; said outer cylindrical body formed having a central bore with one end sealed; an inner cylindrical body mounted concentrically within the bore of said outer cylindrical body; said inner cylindrical body being movable relative to said outer cylindrical body; said inner cylindrical body formed having a central bore with one end being perforated, and an opposite end having a central, sealable axial opening; a rod mounted concentrically within the bore of said inner cylindrical body having an outer end for engaging the supporting surface; said rod being movable relative to said inner cylindrical body; said rod extending through said sealable axial opening in said inner cylindrical body; an inner end of said rod being in a movable sealed relationship to said bore of the inner cylindrical body; an outer chamber formed between said sealed end of the bore of the outer cylindrical body and the sealed end of the rod mounted within the bore of the inner cylindrical body; an inner chamber formed within the bore of the inner cylindrical body between the sealed end of the rod mounted within the bore of the inner cylindrical body and the opposite end of the inner cylindrical body having the central axial opening; a bidirectional outer port means in communication with the hydraulic power means and the outer chamber for communicating hydraulic fluid into and out of the outer chamber; and, a bidirectional inner port means in communication with the hydraulic power means and the inner chamber for communicating hydraulic fluid into and out of the inner chamber; whereby the outer chamber is controllably filled with the hydraulic fluid under pressure to move the inner cylindrical body and rod into an extended position engaging the supporting surface and to raise a portion of the vehicle relative to the supporting surface and, alternatively, the inner chamber is controllably filled with the hydraulic fluid under pressure to move the inner cylindrical body and rod into a retracted position and draining the hydraulic fluid from said outer chamber.

Claim 8

The vehicular mounted jack assembly of claim 5, wherein said outer end of the rod is adapted to include a foot plate for distributing weight over a larger area of the supporting terrain of the supporting surface.

Claim 9

The vehicular mounted jack assembly of claim 6, wherein said foot plate is pivotally mounted on said outer end of the rod.

Claim 10

The vehicular mounted jack assembly of claim 5, wherein the hydraulic power means is a power steering pump for the vehicle.

Claim 11

The vehicular mounted jack assembly of claim 5, wherein the wheels of the wheeled vehicle are a plurality of replaceable wheels mounted on the frame of the vehicle, and said hydraulic jack is adapted for mounting on the frame of the vehicle in proximity to said wheels.

Claim 12

The vehicular mounted jack assembly of claim 5, wherein the jack control means further includes manifold means having valves disposed in fluid communication between said hydraulic jack and said hydraulic power means; and manifold valve control means for selectively activating said valves.

Claim 13

A vehicular mounted jack assembly to controllably raise and lower a portion of a wheeled vehicle, comprising: at least one multi-chambered, telescoping hydraulic jack mounted on the vehicle in an essentially vertical orientation relative to the supporting surface for lifting the vehicle relative to the supporting surface; a hydraulic power means coupled in communication with said multi-chambered, telescoping hydraulic jacks for providing a hydraulic fluid under pressure to actuate said hydraulic jacks; and said multi-chambered, telescoping hydraulic jack further comprising: an outer cylindrical body for mounting to the vehicle; said outer cylindrical body formed having a central bore with one end sealed; an inner cylindrical body mounted concentrically within the bore of said outer cylindrical body; said inner cylindrical body being movable relative to said outer cylindrical body; said inner cylindrical body formed having a central bore with one end being perforated, and an opposite end having a central, sealable axial opening; a rod mounted concentrically within the bore of said inner cylindrical body having an outer end for engaging the supporting surface; said rod being movable relative to said inner cylindrical body; said rod extending through said sealable axial opening in said inner cylindrical body; an inner end of said rod being in a movable sealed relationship to said bore of the inner cylindrical body; an outer chamber formed between said sealed end of the bore of the outer cylindrical body and the sealed end of the rod mounted within the bore of the inner cylindrical body; an inner chamber formed within the bore of the inner cylindrical body between the sealed end of the rod mounted within the bore of the inner cylindrical body and the opposite end of the inner cylindrical body having the central axial opening; a bidirectional outer port means coupled in fluid communication with the hydraulic power means and the outer chamber for communicating the hydraulic fluid into and out of the outer chamber; and, a bidirectional inner port means coupled in fluid communication with the hydraulic power means and the inner chamber for communicating the hydraulic fluid into and out of the inner chamber; whereby the outer chamber is controllably filled with the hydraulic fluid under pressure to move the inner cylindrical body and rod into an extended position engaging the supporting surface and to raise a portion of the vehicle relative to the supporting surface and, alternatively, the inner chamber is controllably filled with the hydraulic fluid under pressure to move the inner cylindrical body and rod into a retracted position and draining the hydraulic fluid from said outer chamber.

Claim 14

A vehicular mounted jack assembly to controllably raise and lower a portion of a wheeled vehicle, comprising: at least one multi-chambered, telescoping hydraulic jack mounted on the vehicle in an essentially vertical orientation relative to the supporting surface for lifting the vehicle relative to the supporting surface; a hydraulic power means coupled in communication with said multi-chambered, telescoping hydraulic jacks for providing a hydraulic fluid under pressure to actuate said hydraulic jacks; and said multi-chambered, telescoping hydraulic jack further comprising: an outer cylindrical body for mounting to the vehicle; said outer cylindrical body formed having a central bore with one end sealed; an inner cylindrical body mounted concentrically within the bore of said outer cylindrical body; said inner cylindrical body being movable relative to said outer cylindrical body; said inner cylindrical body formed having a central bore with one end being perforated, and an opposite end having a central, sealable axial opening; a rod mounted concentrically within the bore of said inner cylindrical body having an outer end for engaging the supporting surface; said rod being movable relative to said inner cylindrical body; said rod extending through said sealable axial opening in said inner cylindrical body; an inner end of said rod being in a movable sealed relationship to said bore of the inner cylindrical body; an outer chamber formed between said sealed end of the bore of the outer cylindrical body and the sealed end of the rod mounted within the bore of the inner cylindrical body; an inner chamber formed within the bore of the inner cylindrical body between the sealed end of the rod mounted within the bore of the inner cylindrical body and the opposite end of the inner cylindrical body having the central axial opening; a bidirectional outer port means coupled in fluid communication with the hydraulic power means and the outer chamber for communicating the hydraulic fluid into and out of the outer chamber; and, a bidirectional inner port means coupled in fluid communication with the hydraulic power means and the inner chamber for communicating the hydraulic fluid into and out of the inner chamber; whereby the outer chamber is controllably filled with the hydraulic fluid under pressure to move the inner cylindrical body and rod into an extended position engaging the supporting surface and to raise a portion of the vehicle relative to the supporting surface and, alternatively, the inner chamber is controllably filled with the hydraulic fluid under pressure to move the inner cylindrical body and rod into a retracted position and draining the hydraulic fluid from said outer chamber.

Claim 15

The vehicular mounted jack assembly of claim 11, including a foot plate attached to the outer end of the rod for distributing weight over a larger area of the supporting surface.

Claim 16

The vehicular mounted jack assembly of claim 12, wherein said foot plate is pivotally mounted on said outer end of the rod.

Claim 17

The vehicular mounted jack assembly of claim 11, wherein said hydraulic power means is a power steering pump for the vehicle.

Claim 18

The vehicular mounted jack assembly of claim 11, said hydraulic jacks being adapted for attachment to the vehicle in proximity to said wheels.

Claim 19

The vehicular mounted jack assembly of claim 11, wherein a plurality of hydraulic jacks are coupled in fluid communication to a manifold means having valves disposed in fluid communication between said jacks and said hydraulic power means; and manifold valve control means for selectively activating said valves.