Patent ID: 8511644
Filing Date: 2013-08-20
Classification: B66F

Abstract:
1. A vehicle pushing device suitable for moving wheeled vehicles stuck in sand, mud, snow or any soft and/or slippery surface, the device including in combination: a) a set of chain of blocks, each chain of blocks comprising a plurality of blocks interconnected to one another by means of intermediate connecting elements and being unfolded in front of a corresponding wheel of a vehicle in order to provide a substantially thick supporting track, with sufficient length to guide the vehicle wheel until it is totally free, and to form a fixed anchoring point when the blocks are first slightly pulled under the wheel and then pressed into the ground by the weight of the moving vehicle; wherein b) a set of connecting systems, one for each chain of blocks each of said connecting system being laid in front of and behind the sunken part of the wheel and being connected at its rear end to the hooking device of the corresponding chain of blocks and consisting of three main parts, c) a set of connecting straps wherein said straps being flexible, non-elastic, having substantial tensile strength and adjustably attached at the rear end to the corresponding connecting system front part hooking device, and being pulled on the front end to exert on said hooking devices said pulling force approximately in line with the plane of the vehicle wheels, d) a force multiplying system configured to multiply the effort of at least one operator to provide in combination: said pulling force further transmitted by each strap to the chains of blocks via the connecting systems, and a resulting pushing force applied on contact points located at the rear of the vehicle, said combination of forces resulting in an initial backwards movement of the chains of blocks under the wheels of the vehicle until said chains of blocks are sufficiently anchored in the ground so that a displacement resulting from said pushing force applied on the rear of the vehicle gets the vehicle out of the soft soil.