Stackable trailer jack leveling apparatus

Disclosed is a trailer leveling support, comprising a plurality of wedge shaped pads for supporting a trailer parked on an angled surface. The upper portion of the wedge is provided in a flat configuration to allow placement of any trailer accessory, while the base surface is provided at an angle with respect to the upper surface, allowing the base to rest against an angled support surface while the upper surface is positioned in a level configuration. The pads may be stacked to achieve the desired angle based on the trailer support surface. The device also includes a strap for securing the pads together, or to the trailer for added stability. The footprint of the device occupies a sufficient surface area to distribute the weight of the trailer over a larger area to prevent the trailer tongue from sinking into a soft surface.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to the field of unpowered trailers. More specifically, the present invention pertains to a wheel chock for supporting a trailer in a level configuration despite being parked on an angled surface.

A trailer is a type of unpowered vehicle that is pulled by a powered vehicle. Some typical examples are trailers used to transport goods, boats, horses, or mobile homes. Trailers generally have two to four wheels, and attach to another vehicle by a tongue hitch. When a trailer is not attached to a powered vehicle, it is supported by a trailer tongue jack, which lifts the trailer hitch to a specified height that allows the trailer to be hitched or unhitched from a towing vehicle. Trailer tongue jacks are also used for leveling the trailer during storage, however they are unable to level a trailer parked on an angled ground, such as a driveway with a large percent gradient. Additionally, the wheel attached to a trailer tongue jack occupies a small footprint, making it susceptible to sinking into a soft surface when parked thereon.

Several devices are disclosed in the prior art that support and level a trailer parked on an angled surface. These devices, however, do not provide a sufficient footprint at the interface between the ground and trailer jack to prevent the trailer jack from sinking into a soft ground surface. Other devices have been disclosed to prevent a trailer jack from sinking into a soft surface; however, they are not adapted to leveling a trailer parked on a steep gradient. Devices such as a wheel chock can support a trailer on a soft surface, but cannot level a trailer parked on a slope.

The present invention discloses a trailer leveling support comprised of a plurality of stackable, wedge shaped pads for supporting a trailer parked on an angled surface. The upper portion of the wedge is provided in a flat configuration to allow placement of any trailer accessory, such as a recessed support area for securing a trailer jack wheel, while the base surface is provided at an angle with respect to the upper surface, allowing the base surface to rest against an angled support surface while the upper surface is positioned in a level configuration. The wedge shaped pads may be stacked as needed to achieve the desired angle based on the trailer support surface. The device also includes a strap for securing the pads together, and the pads to the trailer for added stability and security. The footprint of the device occupies a sufficient surface area to prevent the trailer from sinking into a soft surface, distributing the weight of the trailer over a larger area and preventing the trailer tongue from sinking.

2. Description of the Prior Art

Several devices have been disclosed in the art that support an unpowered trailer parked on an angled surface. Williams, U.S. Pat. No. 5,527,054 discloses an adjustable length leg and foot assembly incorporated in a lifting/leveling leg for a fifth-wheel trailer. The foot is connected to the lower end of a threaded shaft, which in turn is received at its upper end by a nut welded to a U-shaped bracket on the leg. This enables the foot to be raised and lowered in infinite increments and avoids any need for insertion of boards or shims in making final leveling adjustments. Jones, U.S. Pat. No. 5,046,587 discloses a wheel chock with a base, upwardly sloped ramps extending around the periphery of the base, and a receiver located inboard of the ramps for releasably retaining a wheel and supporting the load thereon. The ramps and receiver permit wheel approach around the entire periphery of the base. While these devices may be useful for supporting a trailer on an unlevel surface, their structure significantly diverges from the present invention, wherein the support is affixed to a trailer and is raised and lowered by a threaded shaft attached to a pad. The present invention is not permanently affixed to a trailer, and can additionally provide sufficient support for a trailer parked on a soft surface.

Other devices disclosed in the prior art claim a wheel chock for a trailer to support a fifth wheel trailer jack stand. Bean, U.S. Pat. No. 6,874,745 discloses a device to secure a jack pad for supporting the jack of a trailer so that the jack does not sink into the ground when it is not being used. The device receives and supports trailer jacks having various configurations so that one device may be used with a number of differently configured trailer jacks. Couch, U.S. Pat. No. 5,755,430 discloses a trailer jack leveling adapter for improving a fifth wheel trailer jack stand having a pair of downwardly telescoping leg assemblies whereby one of the leg assemblies may be adjusted to compensate for an uneven supporting surface for leveling the trailer. The trailer jack leveling adapter comprises a connector fixedly attached to a lower end of a leg assembly. An elongated leg extension is longitudinally adjustably engaged with the connector. While such devices provide a support for a trailer jack stand, they do not allow for adjustment based on the percent gradient of the surface the trailer is parked thereon.

While effective at supporting a trailer parked on an angled or soft surface, these prior art devices have several known drawbacks. These devices are height adjustable for supporting a trailer on an angled surface, but do not have a sufficiently large surface area for preventing the support from sinking into soft ground. Other devices have a surface area large enough to prevent the trailer from sinking, but are not adapted to leveling the trailer on an unlevel surface. The present invention provides a support device with a surface area large enough for preventing a trailer from sinking into the ground, and also allows for leveling based on the percent gradient of the surface parked thereon. The present invention substantially diverges in design elements from the prior art and consequently it is clear that there is a need in the art for an improvement to existing trailer leveling support devices. In this regard the instant invention substantially fulfills these needs.

SUMMARY OF THE INVENTION

In view of the foregoing disadvantages inherent in the known types of trailer leveling support devices now present in the prior art, the present invention provides a new trailer leveling support devices wherein the same can be utilized for providing convenience for the user when parking a trailer on an angled or soft surface.

It is therefore an object of the present invention to provide a new and improved trailer leveling support device that has all of the advantages of the prior art and none of the disadvantages.

Another object of the present invention to provide a new and improved trailer leveling support device that supports a trailer that is not attached to a powered vehicle.

Another object of the present invention is to provide a new and improved trailer leveling support device that levels a trailer parked on an angled ground.

Yet another object of the present invention is to provide a new and improved trailer leveling support device that prevents a trailer from sinking into a soft surface when parked thereon.

Another object of the present invention is to provide a new and improved trailer leveling support device that includes a plurality of angled wedges that are at an angle with respect to one another, allowing a plurality of wedged pads to form a column of pads that are easily transported and handled.

Another object of the present invention is to provide a new and improved trailer leveling support device that includes a strap for securing the support and the trailer together, providing additional security thereto.

Another object of the present invention is to provide a new and improved trailer leveling support device that is easy to make and inexpensive to manufacture.

DETAILED DESCRIPTION OF THE INVENTION

Reference is made herein to the attached drawings. Like reference numerals are used throughout the drawings to depict like or similar elements of the trailer leveling support device. For the purposes of presenting a brief and clear description of the present invention, the preferred embodiment will be discussed as used for supporting a trailer tongue in a level configuration when parked on a slope. The figures are intended for representative purposes only and should not be considered to be limiting in any respect.

Referring now toFIG. 1, there is shown a perspective view of the present invention, comprising a plurality of angled wedge pads11, each having an upper planar face13and a lower planar face12separated by a given distance to form an angled wedge. The wedge pad11is a hexahedron shape with vertical sidewalls14that span a gap between the two planar faces. The lower face12is adapted to rest against a ground surface, while the upper face13is provided at an angle with respect to the lower face12, allowing the lower face12to rest against an angled support surface while the upper surface is positioned in a level configuration. This provides a means to create a level support surface16on an otherwise angled or sloping ground surface. The upper face of the wedge13may be used in conjunction with any trailer accessory, such as a trailer jack wheel or trailer tongue jack base plate, an extension member, or further stackable devices that may provide fitment for a trailer tongue jack wheel assembly or other trailer accessory requiring support.

The upper face13and lower face12are positioned at an angle with respect to one another to provide a support surface forming a level placement and positioning for an item placed on the upper face while in a working position on a sloped ground surface. On angled or sloped terrain, the pad may be utilized to provide a level support surface, wherein the angle between the pad upper and lower faces equals the downward slope of the ground surface measured from a horizontal plane.

The angle of the wedge is not adjustable, which eliminates any moving parts and added complexity, therefore a plurality of wedge angles may be constructed and provided for a user to create a level working surface on hills with differing angles. A plurality of wedges11,21,31, each with different angles, may be utilized together or provided together for a user. The plurality of angled wedges11,21,31can be stacked to form a column of pads comprising various angles that are easily transported and handled. A plurality of wedges11may be provided that are stackable to allow wedges of different angles to be transported to a specific site, without prior knowledge of the terrain or grade thereof. The ability to stack several wedges11,21,31together allows a user to easily transport several different angled pads together and in a convenient configuration. Each wedge contains a pair of handles41on opposing sides, making for ease of transport and handling, along with allowing for attachment of a securing strap. The strap42secures the wedges11together for transport, or alternately secures the wedge11to a trailer jack tongue, thereby providing additional support, stability and security of the pads when left unoccupied and in use.

Referring now toFIG. 2, there is shown a perspective view of the present invention, comprising a plurality of wedge shaped pads11,21,31stacked in a column, as well as an exploded view of an extension member51and wheel chock61aligned thereon. The extension member51comprises a device having a hexahedron shape and a planar upper and lower face, along with and substantially smaller side faces connected between the upper and lower faces. An extension member51, such as shown inFIG. 2, is a non-angled pad that may be used to raise the working surface of the upper surface of the angled pad, or may be used alone to support a trailer tongue jack that is positioned on a flat, soft surface. The article placed on the upper face of the angled pad is not desired to be limited to a specific object, alternatively it is contemplated that any object requiring support or in furtherance of supporting an article may be used in connection with the angled pad upper surface16. The footprint of angled pad lower surface occupies a sufficient surface area to prevent the trailer from sinking into a relatively soft ground surface, distributing the weight of the trailer over a large surface area and preventing the weight of a supported object from depressing the pad into the ground.

A plurality of angled pads may be utilized to create a working surface16at a desired angled if a singular pad is insufficient at creating the required angle. A plurality of angled pads11,21,31, each with different angles between their respective upper and lower surfaces may be provided to a user in the form of a kit or stack pads. Varying angle combinations of pads may be stacked to create intermediate angles to achieve a level working surface16on the upper most pad. It may be desired that all pads provided in a given kit create a vertical column; however it is not desired to limit the present invention or kit to this requirement. In order to provide sufficiently differing angles within a stack of pads, the sum of all pad interior angles would have to equal 180 degrees (a straight line). Alternative embodiments of a pad kit may include an insufficient number of pads or interior angles to achieve180exactly, or pads that add up to greater or less than 180 degrees, creating a column of pads that when stacked are not vertically aligned, but exhibit a skewed profile. It is not desired to limit the quantity, size or interior angle of each pad within a given set of pads, but to establish an example embodiment wherein the stack of angled pads is vertical, which facilitates improved storage and handling.

Any object or support article may be placed on or utilized in conjunction with the upper most working surface16, including a wheel chock pad51with a recessed support area for securing a trailer jack wheel, a level extension member51or a plurality of additional angled pads11. A wheel chock51is similar in shape to a level extension member41, having a planar lower surface; however the wheel chock51further comprises a raised annular lip62with a recessed area63for receiving a wheel therein. The annular raised lip62creates a recessed support area surrounding the wheel to secure the wheel and prevent it from rolling. If the wheel begins to roll, it will encounter the raised lip62, which prevents the wheel from moving, thereby providing safety and security thereto.

Referring now toFIG. 3, there is shown a profile side view of an angled pad as described by the present invention. The angled pad comprises a lower12and upper11face, connected by four upstanding sidewall faces14. The upper and lower faces are disposed at an angled with regard to one another, forming two planes oriented at an angle17originating at their intersection. The lower face12is adapted to rest against a ground surface18, whereby the angle17provided by the upper face is equal to the grade of the ground surface18, creating a level upper face11that may be utilized for supporting articles thereon. The sidewall faces14provide a structural support for the wedge, as well as an offset between the upper13and lower12faces such that the upper face13is held sufficiently above the ground surface18. A pair of handles15is also provided along the opposing sidewalls for improved handling. The handles15are preferably mounted to sidewalls14having a wedge 2-D shape, whereby they are not positioned at differing elevations when on a sloped surface. This eliminates any interference issues between the handle14and the ground surface18uphill from the wedge. The interior of the pad may be hollow for lighter weight and less material, or alternatively the pad may be supplied as a solid block of material. The structure of either embodiment is rated for a specific payload, which will be dependent upon end user application, material and dimensions of the device.

Referring now toFIG. 4there is shown a perspective view of the present invention, as well as a close-up view of the wedge pad11in a working position, supporting a trailer tongue jack pad61on a sloping surface. When a trailer71is parked on an angled or unlevel surface, such as a drive way, a wedge pad or plurality thereof may be arranged to create a level surface for supporting the trailer tongue jack or similar device requiring support. The pad11may be utilized independently, with a plurality of other pads to create a level working surface, or in conjunction with extensions pads41or other support articles that may be desired by the user. The present invention is intended to be utilized to create a level surface from a sloping ground surface, whereupon any article may be placed on its upper face for level and stable support.

To prevent a trailer from falling from the upper face of a pad11, a securing strap or similar securing means91may be employed. The securing means91is preferably a strap, chain or cable that connects through the handle of the pad and secures it to a larger structure for prevention of theft or added stability.

The present invention provides a user with a convenient and inexpensive device for supporting an article in a level configuration, for instance a trailer tongue jack on an angled or soft surface. The plurality of angles inherent in the design of the wedges allows a user to select an appropriate configuration depending on the surface the trailer is parked on. The device can be configured to level a trailer parked on a steep percent gradient, as well as a surface with a slight angle. The footprint of the device occupies a sufficient surface area to prevent the trailer from sinking into a soft surface, adding further convenience to the user. The securing strap is used to tie the support to the trailer, thereby preventing the trailer from sliding or the pads from being stolen. This creates a safe and effective system for securing a trailer when not in use.