The present invention concerns the safety field in general and more specifically portable safety equipment that can be used in the construction industry.
On a construction job site, inevitably there is a need to move around heavy pieces of equipment, such as scissor lifts, dollies, etc., and inevitably there is some immovable object impeding movement, such as a floor sill, electrical wiring, lumber, etc. As a result, ad hoc methods for maneuvering the equipment over the obstacle arise, such as laying a sheet of plywood over the object, or a drywall panel, or even just rolling the equipment directly over the obstacle. These are not safe methods and can result in damage to the obstacle, damage to the equipment, and potentially injury to the worker. This situation also can occur in many other contexts, apart from construction sites, such as at loading docks, at entrances to walk-in coolers and freezers, and the like.
It is therefore shown that there is a need for an improved portable ramp that can be deployed as needed over obstacles to allow for the movement of equipment and other things over the obstacles.
It is therefore an object of the present invention to provide a portable ramp than can be deployed over obstacles, providing a stable, safe means for moving equipment over obstacles.
It is a further object of the present invention to provide a portable ramp that is light weight and easy to position and reposition.
It is yet a further object of the present invention to provide a portable ramp that can bear several thousand pounds of weight.
It is yet a further object of the present invention to provide a portable ramp that can be folded when not in use to minimize storage floor space needs.
Other objects of the present invention will be readily apparent from the description that follows.
The portable ramp of the present invention is comprised of five primary components: a central platform; a first support member and a second support member, both support members located at lateral sides of the central platform on its underside; and a pair of access ramps, each hingedly attached to a lateral side of the central platform proximate to one of the support members. When deployed, the support members raise the central platform a given height over a support surface, such as the floor or ground, allowing the central platform to be placed over an obstacle without contacting it. The access ramps allow objects to be moved from the floor or ground over the obstacle, first up one of the ramps, then across the central platform, then down the other of the ramps. When not being used, the access ramps may be folded upwards, with their distal sides brought together, thereby minimizing the floor space occupied by the portable ramp. Handles located at the distal portions of the access ramps allow for easy carrying of the portable ramp. The upper surface of the portable ramp may have a nonslip covering, for increased safety to persons walking over the portable ramp. It may also have safety graphics applied to its upper surface, providing visible indicators of the portable ramp in general and more particularly of the sides of the portable ramp.
It is to be understood that the foregoing and following description of the invention is intended to be illustrative and exemplary rather than restrictive of the invention as claimed. These and other aspects, advantages, and features of the invention will become apparent to those skilled in the art after review of the entire specification, accompanying figures, and claims.
In one embodiment, the portable ramp 1 of the present invention is comprised of a central platform 200, a first support member 310, a second support member 320, a first access ramp 110, and a second access ramp 120. See
In one embodiment, the central platform 200 of the portable ramp 1 is substantially planar and has a substantially rectangular shape. It may have any dimension, though in the preferred embodiments it has a width of between 6 inches and 12 inches and a length of between 24 inches and 36 inches. In the most preferred embodiment, it has a width of 8 inches and a length of 30 inches. The first lateral side 210 of the central platform 200 is one of the long sides of the central platform 200, and the second lateral side 212 of the central platform 200 is the opposite long side of the central platform 200. The central platform 200 must be constructed of a rigid, durable, high strength material. While any appropriate material may be used, in the preferred embodiment ¼ inch thick plate aluminum is used. This material is both light weight and can support several thousand pounds without distorting. There may be differing thicknesses for different applications, for example, a thinner plate may be used if keeping the overall weight of the ramp 1 to a minimum is a priority and lighter items are to be moved over the ramp 1, while a thicker plate may be used if heavier items are to be moved over the ramp 1.
The first support member 310 of the portable ramp 1 is elongate and substantially planar. It may have any dimension, though in the preferred embodiments it has a length of between 24 inches and 36 inches and a height of between 1 inch and 2 inches. In the most preferred embodiment, it has a length of 30 inches and a height of 1¾ inches. In all embodiments, the length of the first support member 310 should be substantially the same as the length of the central platform 200. The first support member 310 must be constructed of a rigid, durable, high strength material. The second support member 320 of the portable ramp 1 is configured substantially the same as the first support member 310, having the same dimensions and made of the same material. In one embodiment, the first support member 310 is monolithically integrated with the central platform 200, and the second support member 320 is monolithically integrated with the central platform 200. See
In another embodiment, the first support member 310 may be a separate component that is fixedly attached to the underside of the central platform 200. See
The first access ramp 110 of the portable ramp 1 is substantially planar and has a substantially rectangular shape. It may have any dimension, though in the preferred embodiments it has a width of between 12 inches and 24 inches and a length of between 24 inches and 36 inches. In the most preferred embodiment, it has a width of 18 inches and a length of 30 inches. In all embodiments, the length of the first access ramp 110 should be substantially the same as the length of the central platform 200. The first access ramp 110 must be constructed of a rigid, durable, high strength material. While any appropriate material may be used, in the preferred embodiment ¼ inch thick plate aluminum is used. There may be differing thicknesses for different applications, as described above. The second access ramp 120 of the portable ramp 1 is configured substantially the same as the first access ramp 110, having the same dimensions and made of the same material.
The first access ramp 110 is located proximate to the first lateral side 210 of the central platform 200. It is hingedly attached thereto, so that the first access ramp 110 is moveable in relation to the central platform 200. Specifically, the first access ramp 110 must be able to be folded upwards into a substantially vertical orientation. See
The second access ramp 120 is located proximate to the second lateral side 212 of the central platform 200. It is hingedly attached thereto, so that the second access ramp 120 is moveable in relation to the central platform 200. Specifically, the second access ramp 120 must be able to be folded upwards into a substantially vertical orientation. See
Carrying handles may be formed into the first and second access ramps 110,120 proximate to their distal sides 112,122. In the preferred embodiment a first handle 510 is formed by creating an aperture through the first access ramp 110 at a location proximate to the distal side 112 of the first access ramp 110, located approximately midway between the short sides of the first access ramp 110. The aperture may be rectangular, or circular, or any other suitable shape. In the preferred embodiment the aperture is an elongate oval. See
In other embodiments, a first handle 510 may be affixed to the underside of the first access ramp 110 proximate to the distal side 112 of the first access ramp 110, and a second handle 520 may be affixed to the underside of the second access ramp 120 proximate to the distal side 122 of the second access ramp 120. Any suitable configuration of handle may be used, though the height of the handles 510,520 must not be so great as to prevent the distal sides 112,122 of the access ramps 110,120 from coming into contact with the floor or ground when the portable ramp 1 is deployed for use. When the first and second access ramps 110,120 are folded upwards, their distal sides 112,122 come into close proximity to each other, see
The upper surfaces 116,126,216 of the central platform 200 and the two access ramps 110,120 may have a nonslip material placed thereon, to improve safety. Any suitable nonslip material may be used. The nonslip material may be affixed to the upper surfaces 116,126,216 of the central platform 200 and the two access ramps 110,120 by the use of an adhesive. The upper surfaces 116,126,216 of the central platform 200 and the two access ramps 110,120 may also have one or more safety graphics 600 affixed thereto. See
The portable ramp 1 of the present invention is used as follows: typically, the portable ramp 1 will be stored in a safe location with its access ramps 110,120 folded upwards, as shown in
These and other embodiments are contemplated by the present invention. While the preferred embodiments of the present invention have been described, modifications can be made and other embodiments may be devised without departing from the spirit of the invention.