# US 2019/0169004 A1 · Off-Road Specialized Jack

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- Number: US 2019/0169004 A1
- Document ID: US20190169004A1
- Status: Published application
- Kind: A1
- Application number: 15/831,322
- Filed: 2017-12-04
- Published: 2019-06-06
- Earliest claimed: 2017-12-04
- Assignees: Austin International Manufacturing, Inc.
- Applicants: Austin International Manufacturing, Inc.
- Inventors: Austin Su; Charles Foreman; Benson Su
- Web page: https://patentgrep.com/patent/US20190169004A1

## CPC

- B66F 5/00: Mobile jacks of the garage type mounted on wheels or rollers
- B60C 7/00: Non-inflatable or solid tyres (B60C1/00 takes precedence)
- B60C 2200/14: for off-road use
- B66F: HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD ({invalid lifting devices A61G7/10; } mounting artificial islands on piles or like supports E02B17/00; scaffolding combined with lifting devices E04G1/22; lifting devices for sliding forms E04G11/24; lifting of buildings E04G23/06; shores or struts E04G25/00; lifts or other hoisting devices on ladders E06C7/12; props for mining E21D15/00)
- B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES

## Abstract

An off-road specialized jack having features making it more able to perform its function in off-road environments. Jacks of the inventive subject matter can include a skid plate, large diameter, non-pneumatic wheels, and, in some embodiments, a lift extender to facilitate lifting high-clearance objects or vehicles. The lift extender can be removably coupled with the jack, and its height can be adjusted according to a user's needs.

## Claims

### Claim 1

An off-road specialized jack, comprising:
a frame;
a first axle and a second axle, both coupled with the frame;
a lifting mechanism coupled with the frame;
the lifting mechanism having an upper surface and a coupling feature, the coupling feature comprising at least two inward protrusions positioned above the upper surface;
a skid plate disposed on an underside of the frame, the skid plate configured to reduce sinking into soft terrain;
a first set of wheels coupled with the first axle, wherein the first set of wheels are configured to improve their ability to roll over soft terrain; and
a second set of wheels coupled with the second axle, wherein the second set of wheels are configured to improve their ability to roll over soft terrain.

### Claim 2 (depends on 1)

The off-road specialized jack of claim 1, wherein the first set of wheels have a larger diameter than the second set of wheels.

### Claim 3

(canceled)

### Claim 4

An off-road specialized jack system, comprising:
a jack comprising:
a frame;
a lifting mechanism coupled with the frame;
the lifting mechanism having an upper surface and a coupling feature, the coupling feature comprising at least two inward protrusions positioned above the upper surface;
a skid plate disposed on an underside of the frame, the skid plate configured to reduce sinking into soft terrain;
a lifting extension comprising a second coupling feature on a bottom surface, the second coupling feature having at least two outward protrusions disposed on an end of the lifting extension, wherein the at least two outward protrusions are configured to fit between the upper surface of the lifting mechanism and the at least two inward protrusions of the coupling feature.

### Claim 5 (depends on 4)

The system of claim 4, wherein the lifting extension has a circular cross section such that a rotation can cause the at least two outward protrusions to fit between the upper surface of the lifting mechanism and the at least two inward protrusions.

### Claim 6 (depends on 4)

The system of claim 4, wherein the jack further comprises:
a first axle and a second axle, both coupled with the frame;
a first set of wheels coupled with the first axle, wherein the first set of wheels are configured to improve their ability to roll over soft terrain; and
a second set of wheels coupled with the second axle, wherein the second set of wheels are configured to improve their ability to roll over soft terrain.

### Claim 7 (depends on 6)

The system of claim 6, wherein the first set of wheels have a larger diameter than the second set of wheels.

### Claim 8

(canceled)

### Claim 9

(canceled)

### Claim 10 (depends on 4)

The system of claim 4, wherein the lifting extension further comprises:
a first component and a second component, the first component being configured to fit within the second component;
wherein the first component comprises a first hole disposed on a side of the first component and wherein the second component comprises a second hole disposed on a side of the second component; and
a pin configured to pass through the first hole and through the second hole to hold the first component and the second component in static positions relative to each other.

### Claim 11

An off-road specialized jack, comprising:
a frame;
a lifting mechanism coupled with the frame;
the lifting mechanism having an upper surface and a coupling feature, the coupling feature comprising at least two inward protrusions positioned above the upper surface; and
a skid plate disposed on an underside of the frame, the skid plate configured to reduce sinking into soft terrain.

### Claim 12 (depends on 11)

The off-road specialized jack of claim 11, wherein the jack further comprises:
a first axle and a second axle, both coupled with the frame;
a first set of wheels coupled with the first axle, wherein the first set of wheels are configured to improve their ability to roll over soft terrain; and
a second set of wheels coupled with the second axle, wherein the second set of wheels are configured to improve their ability to roll over soft terrain.

### Claim 13 (depends on 12)

The off-road specialized jack of claim 12, wherein the lifting extension has a circular cross section such that a rotation can cause the at least two outward protrusions to fit between the upper surface of the lifting mechanism and the at least two inward protrusions.

### Claim 14

(canceled)