Description:DESCRIPTION
Technical Field
[001] This disclosure relates generally to automobile accessory tools, and more particular to a spring-loaded vehicle lifting jack for lifting a vehicle to change a flat tire.

BACKGROUND
[002] Having a flat tire on a vehicle is an unavoidable problem that all vehicle users have to deal with. Changing a punctured or blown out tire is a matter of inconvenience. A typical conventional vehicle lifting jack requires considerable about of manual effort to position and elevate the vehicle. Moreover, properly operating the vehicle lifting jack is of utmost importance for effectively lifting the vehicle off the ground and avoiding an injury or a damage to the vehicle because of improper usage of the vehicle lifting jack. As such, in case of flat tire, the vehicle user have to reply on road side assistance which can prove to be time consuming and expensive.
[003] Therefore, there is a need for a more effective vehicle lifting jack that allows lifting of the vehicle without much effort, and is easy to handle, store, and operate.

SUMMARY OF THE INVENTION
[004] In an embodiment, a vehicle lifting jack is disclosed. The vehicle lifting jack may include a housing which may include a top surface. The vehicle lifting jack may be configured to be positioned underneath a vehicle with the top surface of the housing contacting a jacking point associated with the vehicle. The vehicle lifting jack may further include a vertical member partially disposed within the housing and configured to move vertically relative to the housing. The vertical member may cause to lift the vehicle in response to a forward movement of the vehicle with the vehicle lifting jack positioned underneath the vehicle and the top surface of the housing contacting the jacking point associated with the vehicle. The vertical member may further include a vertical biasing member positioned within the housing and coupled with the vertical member, to bias the vertical member against an upward movement of the vertical member. The vertical biasing member may be configured to absorb vertical jerk during lifting of the vehicle. The vertical member may further include a lateral biasing member disposed within the housing and positioned adjacent and perpendicular to the vertical biasing member. The lateral biasing member may be configured to absorb longitudinal jerk on the vehicle lifting jack during the forward movement of the vehicle.
[005] In an embodiment, a vehicle is disclosed that may include a front-left wheel, a front-right wheel, a rear-left wheel, and a rear-right wheel. The vehicle may further include a railing structure disposed underneath the vehicle. The vehicle may further include a front-left jacking point defined on the railing structure and positioned in proximity to the front-left wheel, a front-right jacking point defined on the railing structure and positioned in proximity to the front-right wheel, a rear-left jacking point defined on the railing structure and positioned in proximity to the rear-left wheel, and a rear-right jacking point defined on the railing structure and positioned in proximity to the rear-right wheel. Each of the front-left jacking point, the front-right jacking point, the rear-left jacking point, and the rear-right jacking point is configured to engage with a vehicle lifting jack when the vehicle lifting jack may be positioned underneath the vehicle. The vehicle lifting jack may be configured to lift the vehicle along one of the front-left jacking point, the front-right jacking point, the rear-left jacking point, and the rear-right jacking point with which the vehicle lifting jack is engaged, in response to a forward movement of the vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS
[006] The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and, together with the description, serve to explain the disclosed principles.
[007] FIG. 1 illustrates a schematic sectional view of a vehicle lifting jack, in accordance with some embodiments of the present disclosure.
[008] FIG. 2 illustrates a side view of a vehicle along with the vehicle lifting jack, in accordance with some embodiments.
[009] FIG. 3 illustrates a bottom view of a vehicle, in accordance with some embodiments of the present disclosure.

DETAILED DESCRIPTION OF THE DRAWINGS
[010] Exemplary embodiments are described with reference to the accompanying drawings. Wherever convenient, the same reference numbers are used throughout the drawings to refer to the same or like parts. While examples and features of disclosed principles are described herein, modifications, adaptations, and other implementations are possible without departing from the spirit and scope of the disclosed embodiments. It is intended that the following detailed description be considered as exemplary only, with the true scope and spirit being indicated by the following claims. Additional illustrative embodiments are listed below.
[011] A vehicle lifting jack and a vehicle is disclosed. The disclosed vehicle lifting jack is a self-contained, portable, and a relatively light-weight vehicle lifting jack that can be easily operable by a user. A railing structure made from a light-weight material may be provided at the bottom of the vehicle. The railing structure may define one or more, for example four jacking points. The railing structure may be mounted on the underbody of the vehicle and may act as a guide or a track over which a spring-loaded vehicle lifting jack may slides across all the four jacking points, depending on which side-wheel is required to be lifted.
[012] The spring-loaded vehicle lifting jack may include a box-in-box elongated structure. In other words, the vehicle lifting jack may include a housing and a vertical member which may be configured to slide inside the housing. The vehicle lifting jack may include two springs – a vertical biasing member (vertical spring) mounted vertically and a lateral biasing member (lateral spring) mounted horizontally. The vertical spring is configured to absorb vertical jerks during lifting the vehicle and the lateral spring is configured to absorb longitudinal jerks during forward movement of the vehicle, to ensure a smooth transition of the vehicle. Depending on which wheel side of the vehicle is to be lifted, the vehicle lifting jack may be accordingly positioned underneath that wheel side. Once lifted, that one wheel side is lifted from the ground while the remaining wheels may remain resting on the ground.
[013] The vehicle lifting jack may further include a mechanical stopper that may lock the vehicle lifting jack with the railing structure, once the vehicle lifting jack is positioned underneath a jacking point of the railing structure. By way of locking, the slippage of the vehicle lifting jack is avoided during lifted condition of the vehicle lifting jack.
[014] In the idle condition of the vehicle lifting jack, the vehicle lifting jack may be positioned at a center position of the railing structure. Further, with the vehicle lifting jack positioned at the center position of the railing structure, the entire vehicle may be lifted by moving vehicle in the forward direction, relieve contact pressure on all the four wheels.
[015] Referring now to FIG. 1, a schematic sectional view of a vehicle lifting jack 100 is illustrated, in accordance with some embodiments of the present disclosure. The vehicle lifting jack 100 may be configured to lift a vehicle (not shown in FIG. 1) in response to a forward movement of the vehicle with the vehicle lifting jack 100 is positioned underneath the vehicle. The vehicle lifting jack 100 may be further configured to absorb a vertical jerk during lifting of the vehicle. The vehicle lifting jack 100 may be further configured to absorb longitudinal jerk on the vehicle lifting jack 100 during the forward movement of the vehicle. In order to position the vehicle lifting jack 100 underneath the vehicle, the vehicle may include one or more jacking points. For example, as explained via FIG. 3 in the subsequent sections of this disclosure, the vehicle may include a railing structure disposed underneath the vehicle, such that the railing structure defines a front-left jacking point, a front-right jacking point, a rear-left jacking point, and a rear-right jacking point defined on the railing structure and positioned in proximity to the rear-right wheel,
[016] In some embodiments, the vehicle lifting jack 100 may include a housing 102. The housing 102 may be made from a rigid material, for example, a metal, an alloy, a polymer, or a composite material. In one example embodiment, the housing 102 may be made from a Steel sheet.
[017] As shown in FIG. 1, the housing 102 may include a top surface 102A. The vehicle lifting jack 100 may be configured to be positioned underneath the vehicle with the top surface 102A of the housing 102 contacting one of the jacking points associated with the vehicle. As such, the top surface 102A may be a flat surface which may be oriented horizontally when the vehicle lifting jack 100 is erected underneath the vehicle. As will be appreciated by those skilled in the art, the flat surface of the top surface 102A may allow for balancing of the vehicle lifting jack 100 thereby ensuring stability of the vehicle in a lifted condition.
[018] The vehicle lifting jack 100 may further include a vertical member 104 which may be partially disposed within the housing 102. The vertical member 104 may be prismatic structure having a circular, or a square, or a rectangular, or any other polygonal cross-section. The vertical member 104 may be configured to move vertically relative to the housing 102. In order to accommodate and guide the vertical member 104, the housing 102 may include an elongated hollow section 102B extending vertically. The elongated hollow section 102B may be configured to accommodate therewithin and guide the vertical member 104 during vertical movement of the vertical member. In particular, the vertical member 104 may be configured to slide within the elongated hollow section 102B to move vertically upwards and downwards relative to the housing 102. The vertical member 104 may cause to lift the vehicle in response to a forward movement of the vehicle with the vehicle lifting jack 100 is positioned underneath the vehicle and the top surface 102A of the housing 102 is contacting the jacking point associated with the vehicle.
[019] The vehicle lifting jack 100 may further include a vertical biasing member 106. For example, the vertical biasing member 106 may be an open-coil helical compression spring extending between a first end and a second end. As such, the vertical biasing member 106 may oppose compression. The vertical biasing member 106 may be made from a suitable material, such as spring Steel. The vertical biasing member 106 may be positioned within the housing 102 and coupled with the vertical member 104, to bias the vertical member 104 against an upward movement of the vertical member 104. The vertical biasing member 106 may be configured to absorb vertical jerk during lifting of the vehicle.
[020] It should be noted that in order to lift the vehicle using the vehicle lifting jack 100, the vehicle lifting jack 100 may be positioned underneath the vehicle. The vehicle lifting jack 100 may be positioned at an inclination to the vertical. Thereafter, the vehicle may be moved in the forward direction. As a result, while running over the vehicle lifting jack 100, the vehicle may get lifted over the vehicle lifting jack 100 around the jacking point with which the vehicle lifting jack 100 the engaged. As will be appreciated, a sudden lifting of the vehicle may cause a jerk in the vertical direction and the jerk may damage the vehicle or the vehicle lifting jack 100 or both. To this end, the vertical biasing member 106 may cushion the upward movement of the vertical member 104, thereby absorbing the vertical jerk during lifting of the vehicle.
[021] In some embodiments, the vertical biasing member 106 may be pivotably coupled with the housing 102, via a top end of the vertical member 104. As such, a pivot joint (not shown in FIG. 1) may be provided within the housing 102 at a bottom side of the top surface 102A. The vertical biasing member 106 may be pivotably coupled with pivot joint via the first end of the vertical biasing member 106. The vertical biasing member 106, therefore, may be configured to rotate (for example, by an angle of a few degrees) with respect to the housing 102.
[022] The vertical biasing member 106 may be coupled with the vertical member 104 via the second end of the vertical biasing member 106. As such, the vertical biasing member 106 may bias the vertical member 104 against an upward movement of the vertical member 104. As such, the pivot joint may enable the vertical biasing member 106 to allow a minor lateral movement of the vertical member 104 during the forward movement and the lifting of the vehicle.
[023] The vehicle lifting jack 100 may further include a lateral biasing member 108. The lateral biasing member 108 may be an open-coil helical compression spring extending between a first end and a second end. The lateral biasing member 108 may be made from a suitable material, such as spring Steel. The lateral biasing member 106 may be disposed within the housing 102 and positioned adjacent and perpendicular to the vertical biasing member 106. Further, the lateral biasing member 106 may be configured to bias the vertical member 104 and the vertical biasing member 104 against a lateral movement. The lateral biasing member 108 may be configured to absorb longitudinal jerk on the vehicle lifting jack 100 during the forward movement of the vehicle.
[024] As mentioned above, to lift the vehicle, the vehicle lifting jack 100 may be positioned underneath the vehicle at an inclination to the vertical and then the vehicle may be moved in the forward direction. While running over the vehicle lifting jack 100, the vehicle may get lifted over the vehicle lifting jack 100. The forwards movement of the vehicle may cause the jerk in the lateral direction and the jerk may damage the vehicle or the vehicle lifting jack 100 or both. To this end, the lateral biasing member 108 may cushion the lateral movement of the vertical member 104 and/or the vertical biasing member 106, thereby absorbing the longitudinal jerk during the lifting of the vehicle.
[025] In some embodiments, the vehicle lifting jack 100 may further include a foot 110 which may be attached to the vertical member 104 at a bottom end thereof, as shown in FIG. 1. The foot 110 may be configured to support thereon the vertical member 104 when the vehicle is lifted by the vertical member 104. The foot 110 may include a high-friction bottom surface 110A. by way of an example, the high-friction bottom surface 110A may be made from material selected from a rubber, a plastic, and a composite material. As will be appreciated, the foot 110 may be made of a material having high load-bearing capacity, shock absorbing capability, and anti-slip capability.
[026] In some embodiments, the vehicle lifting jack 100 may further include a mechanical stopper 112 disposed on a side of one or more sides of the housing 102. For example, as shown in FIG. 1, the housing 102 may be configured in a square or a rectangular configuration and may therefore include four side (however, other configurations with any other number of sides may be possible as well). The mechanical stopper 112 may be disposed on a side 102C of the housing 102. The mechanical stopper 112 may be configured to lock with a railing structure of the vehicle when the vehicle lifting jack 100 is positioned at a jacking point. By way of locking, the mechanical stopper 112 may avoid slipping of the vehicle lifting jack 100 during lifting of the vehicle.
[027] Referring now to FIG. 2, a side view 200 of a vehicle 202 along with the vehicle lifting jack 100 is illustrated, in accordance with some embodiments. FIG. 2 depicts a process of using the vehicle lifting jack 100 for lifting the vehicle 202, for example, for the purpose of changing a flat tire.
[028] The vehicle 202 a H-shaped railing structure mounted on an underbody of the vehicle 202. The railing structure includes a sliding mechanism and multiple jacking points (for example, five jacking points), such that the vehicle lifting jack can slide along the railing structure and can be engaged with any of the jacking points. A mechanical locking mechanism may be provided on the vehicle lifting jack 100 to avoid rollback or slipping of the vehicle lifting jack, when the vehicle lifting jack 100 is being used for lifting the vehicle 202. While removing the tire, a user may slide the vehicle lifting jack 100 along the railing structure to position the vehicle lifting jack 100 on a required jacking point. For example, as shown in FIG. 2, the vehicle lifting jack 100 may be positioned at a rear-left jacking point 204 in proximity to the rear-left wheel 206.
[029] Once the vehicle lifting jack 100 is positioned at the required jacking point, the vehicle lifting jack 100 may be lowered by rotating the jacking point from horizontal position to a position where the jack touches the ground 208 in a slanted position. Thereafter, a driver may cause the vehicle 202 to move in the forward direction to run over the vehicle lifting jack 100, till the vehicle lifting jack 100 assumes a substantially vertical position. As a result, the vehicle may bel lifted around the required jacking point and the wheel (tire).
[030] Referring now to FIG. 3, a bottom view of a vehicle 300 is illustrated, in accordance with some embodiments of the present disclosure. The vehicle 300 may be a four-wheeled vehicle, such as a passenger vehicle (for example, a car, a van, etc.) or a commercial vehicle (for example, a truck, a trailer, etc.). As such, the vehicle 300 may include a front-left wheel 302A, a front-right wheel 302B, a rear-left wheel 302C, and a rear-right wheel 302D. The vehicle 300 may further include a railing structure 304 which may be disposed underneath the vehicle. For example, as shown in FIG. 3, the railing structure 304 may be a H-shaped structure that may include two longitudinal rails positioned along the length of the vehicle 300 and a lateral rail positioned along the width of the vehicle 300. It should be noted that the railing structure 304 may either be integral to the vehicle 300 or may be retrofitted to the vehicle 300.
[031] The railing structure 304 may define various jacking points thereon that may be configured to engage with the vehicle lifting jack 100 when the vehicle lifting jack 100 is positioned underneath the vehicle 300. In particular, the railing structure 304 may include a front-left jacking point 306A which may be defined on the railing structure 304 and positioned in proximity to the front-left wheel 302A. The railing structure 304 may further include a front-right jacking point 306B which may be defined on the railing structure 304 and positioned in proximity to the front-right wheel 302B. The railing structure 304 may further include a rear-left jacking point 306C which may be defined on the railing structure 304 and positioned in proximity to the rear-left wheel 302C. The railing structure 304 may further include a rear-right jacking point 306D which may be defined on the railing structure 304 and positioned in proximity to the rear-right wheel 302D.
[032] Each of the front-left jacking point 306A, the front-right jacking point 306B, the rear-left jacking point 306C, and the rear-right jacking point 306D may be configured to engage with the vehicle lifting jack 100 when the vehicle lifting jack 100 is positioned underneath the vehicle 300. As mentioned above, the vehicle lifting jack 100 may be configured to lift the vehicle 300 along one of the front-left jacking point 306A, the front-right jacking point 306B, the rear-left jacking point 306C, and the rear-right jacking point 306D with which the vehicle lifting jack 100 is engaged, in response to a forward movement of the vehicle 300.
[033] In some embodiments, as shown in FIG. 3, the railing structure 304 may further define a central jacking point 306E. The central jacking point 306E may be defined on the railing structure 304 and positioned at the middle of the railing structure 304. The central jacking point 306E may be configured to engage with the vehicle lifting jack 100, such that vehicle lifting jack 100 may lift the entire vehicle 300 in response to a forward movement of the vehicle 300 with the vehicle lifting jack 100 is positioned underneath the central jacking point 306E. As such, the vehicle lifting jack 100 may be positioned at the central jacking point 306E of the H-shaped railing structure 304 to lift all the wheels 302A, 302B, 302C, 302D of the vehicle 300 and release pressure to some extent to thereby prevent flat spotting of tires, especially when the vehicle 300 is parked (i.e. not moved) for long durations.
[034] The railing structure 304 may further include a sliding mechanism, such that the vehicle lifting jack 100, which may be fitted in the H-shaped railing structure 304, may be configured to slide along the railing structure 304. As such, the vehicle lifting jack 100 can be slidably moved along the railing structure 304 and can be positioned at any of the five jacking points 306A, 306B, 306C, 306D, 306E.
[035] The vehicle lifting jack 100 may include a mechanical locking mechanism (not shown in FIG. 3) which may allow the vehicle lifting jack 100 to be engaged with one of the five jacking points 306A, 306B, 306C, 306D, 306E at which the vehicle lifting jack 100 is required to be positioned. As such, upon slidably moving along the railing structure 304 and positioned the vehicle lifting jack 100 at one of the five jacking points 306A, 306B, 306C, 306D, 306E, the vehicle lifting jack 100 may be locked with jacking point using the mechanical locking mechanism. For example, the vehicle lifting jack 100 may be further configured to lock with the jacking point associated with the vehicle 300, via the top surface 102A of the housing 102. The mechanical locking mechanism may avoid rollback or slipping of the vehicle lifting jack 100 at the time of using the vehicle lifting jack 100 for lifting the vehicle.
[036] The above disclosure discloses a spring-loaded vehicle lifting jack that provides for easily lifting a vehicle, for example, to change a flat tire. The spring-loaded vehicle lifting jack includes a vertical and a horizontal spring for provide cushioning against vertical and longitudinal jerks. A H-shaped railing structure is mounted on an underbody of the vehicle. The railing structure includes a sliding mechanism and five jacking points, such that the vehicle lifting jack can slide along the railing structure and can be engaged with any of the five jacking points. A mechanical locking mechanism is provided on the vehicle lifting jack to avoid rollback or slipping of the vehicle lifting jack when the vehicle lifting jack is in use for lifting the vehicle. While removing the tire, a user may slide the vehicle lifting jack along the railing structure to position the jack on a required jacking point, and then lower the vehicle lifting jack by rotating the jack from horizontal position to a position where the jack touches the ground in a slanted position. Thereafter, the a driver may cause the vehicle to move in the forward direction to run over the vehicle lifting jack, till the vehicle lifting jack assumes a vertical position, thereby lifting the vehicle around the required tire. Moreover, the vehicle lifting jack may be positioned at a central jacking point of the H-shaped railing structure to lift all the wheels of the vehicle and release pressure to some extent to avoid flat spotting of tires.
[037] The above vehicle lifting jack provides for ease of operation and reduces the effort of user, as compared to conventional jacks. As such, the vehicle lifting jack can be used by one user without requiring assistance of a second person. The H-shaped railing structure provides for easy location of the jacking positions. The H-shaped railing structure and the vehicle lifting jack further provides for a facility to lift the entire vehicle, thereby releasing pressure on all the tires and helping avoid patches generated on tires when vehicle car is not being moved for long durations.
[038] It is intended that the disclosure and examples be considered as exemplary only, with a true scope and spirit of disclosed embodiments being indicated by the following claims.

Reference Numerals Table
100 vehicle lifting jack
102 housing
102A top surface
102B elongated hollow section
102C side
104 vertical member
106 vertical biasing member
108 lateral biasing member
110 foot
110A bottom surface
112 mechanical stopper
202 vehicle
204 rear-left jacking point
206 rear-left wheel
208 ground
300 vehicle
302A front-left wheel
302B front-right wheel
302C rear-left wheel
302D rear-right wheel
304 railing structure
306A front-left jacking point
306B front-right jacking point
306C rear-left jacking point
306D rear-right jacking point
306E central jacking point
, Claims:CLAIMS

We Claim:
1. A vehicle lifting jack (100) comprising:
a housing (102) comprising a top surface (102A), wherein the vehicle lifting jack (100) is configured to be positioned underneath a vehicle (300) with the top surface (102A) of the housing (102) contacting a jacking point associated with the vehicle (300);
a vertical member (104) partially disposed within the housing (102) and configured to move vertically relative to the housing (102), wherein the vertical member (104) causes to lift the vehicle (300) in response to a forward movement of the vehicle (300) with the vehicle lifting jack (100) positioned underneath the vehicle and the top surface (102A) of the housing (102) contacting the jacking point associated with the vehicle (300);
a vertical biasing member (106) positioned within the housing (102) and coupled with the vertical member (104), to bias the vertical member (104) against an upward movement of the vertical member (104), the vertical biasing member (106) configured to absorb vertical jerk during lifting of the vehicle (300); and
a lateral biasing member (108) disposed within the housing (102) and positioned adjacent and perpendicular to the vertical biasing member (106), the lateral biasing member (108) configured to absorb longitudinal jerk on the vehicle lifting jack (100) during the forward movement of the vehicle (300).

2. The vehicle lifting jack (100) as claimed in claim 1, wherein the vertical biasing member (106) is pivotably coupled with the housing (102), via a top end of the vertical biasing member (106).

3. The vehicle lifting jack (100) as claimed in claim 1, wherein the housing (102) comprises an elongated hollow section extending vertically, the elongated section configured to accommodate therewithin and guide the vertical member (104) during vertical movement of the vertical member (104).

4. The vehicle lifting jack (100) as claimed in claim 1 further comprising:
a foot (110) attached to the vertical member (104) at a bottom end thereof, the foot (110) configured to support thereon the vertical member (104) when the vehicle (300) is lifted by the vertical member (104).

5. The vehicle lifting jack (100) as claimed in claim 4, wherein the foot (110) comprises a high-friction bottom surface (110A), wherein the high-friction bottom surface (110A) is made from material selected from rubber, a plastic, and a composite material.

6. The vehicle lifting jack (100) as claimed in claim 1, wherein the vehicle lifting jack (100) is further configured to lock with the jacking point associated with the vehicle (300), via the top surface (102A) of the housing (102).

7. The vehicle lifting jack (100) as claimed in claim 1 further comprising:
a mechanical stopper (112) disposed on a side (102C) of one or more sides of the housing (102), the mechanical stopper (112) configured to lock with a railing structure (304) of the vehicle (300) when the vehicle lifting jack (100) is positioned at a jacking point, and thereby avoid slipping of the vehicle lifting jack (100) during lifting of the vehicle (300).

8. A vehicle (300) comprising:
a front-left wheel (302A), a front-right wheel (302B), a rear-left wheel (302C), and a rear-right wheel (302D);
a railing structure (304) disposed underneath the vehicle (300); and
a front-left jacking point (306A) defined on the railing structure (304) and positioned in proximity to the front-left wheel (302A);
a front-right jacking point (306B) defined on the railing structure (304) and positioned in proximity to the front-right wheel (302B);
a rear-left jacking point (306C) defined on the railing structure (304) and positioned in proximity to the rear-left wheel (302C); and
a rear-right jacking point (306D) defined on the railing structure (304) and positioned in proximity to the rear-right wheel (302D),
wherein each of the front-left jacking point (306A), the front-right jacking point (306B), the rear-left jacking point (306C), and the rear-right jacking point (306D) is configured to engage with a vehicle lifting jack (100) when the vehicle lifting jack (100) is positioned underneath the vehicle (300), and
wherein the vehicle lifting jack (100) is configured to lift the vehicle (300) along one of the front-left jacking point (306A), the front-right jacking point (306B), the rear-left jacking point (306C), and the rear-right jacking point (306D) with which the vehicle lifting jack (100) is engaged, in response to a forward movement of the vehicle (300).

9. The vehicle (300) as claimed in claim 8, wherein the railing structure (304) is a H-shaped railing structure (304).

10. The vehicle (300) as claimed in claim 8, further comprising:
a central jacking point (306E) defined on the railing structure (304) and positioned in the middle of the railing structure (304), the central jacking point (306E) configured to engage with the vehicle lifting jack (100), wherein the vehicle lifting jack (100) is configured to lift the entire vehicle (300) in response to a forward movement of the vehicle (300) with the vehicle lifting jack (100) positioned underneath the central jacking point (306E).