Patent ID: 7192239
Filing Date: 2007-03-20
Classification: B60P

Abstract:
1. An apparatus for dual stage loading of a container upon a roll-off vehicle comprising: A. a main frame means extending longitudinally and defining an upper support surface thereupon for receiving of a container thereupon, said main frame means defining a primary shoe starting position and a primary shoe final position spatially disposed with respect to one another and defining a primary shoe movement path extending therebetween, said main frame means also defining a secondary shoe starting position and a secondary shoe final position spatially disposed with respect to one another and defining a secondary shoe movement path extending therebetween; B. a base crossmember extending laterally across said main frame means and fixedly secured with respect thereto; C. a frontal crossmember extending laterally across said main frame means at a position spatially disposed from said base crossmember and fixedly secured with respect to said main frame means; D. a primary shoe member movably secured with respect to said main frame means to be movable therealong longitudinally along said primary shoe movement path; E. a secondary shoe member movably secured with respect to said main frame means to be movable therealong longitudinally along said secondary shoe movement path, said secondary shoe movement path overlapping a portion of said primary shoe movement path in order to facilitate abutment of said primary shoe member with respect to said secondary shoe member at an intermediate position defined between said primary shoe starting position and said primary shoe final position to urge movement of said primary shoe member along with said secondary shoe member in abutting engagement therewith along the secondary shoe movement path from said secondary shoe starting position toward said secondary shoe final position; F. a longitudinally extensible member attached to said base crossmember and extensible outwardly therefrom longitudinally along said main frame means, said longitudinally extensible member also being attached with respect to said primary shoe member and operative to urge movement thereof longitudinally with respect to said main frame means along said primary shoe movement path responsive to longitudinal extending of said longitudinally extensible member; G. a first base sheave means rotatably mounted with respect to said base crossmember; H. a second base sheave means also being rotatably mounted with respect to said base crossmember; I. a primary shoe sheave means rotatably mounted with respect to said primary shoe member and movable therewith along said primary shoe movement path between said primary shoe starting position and said primary shoe final position; J. a secondary shoe sheave means rotatably mounted with respect to said secondary shoe member and movable therewith along said secondary shoe movement path between said secondary shoe starting position and said secondary shoe final position; K. a frontal sheave means rotatably mounted with respect to said frontal crossmember; and L. a flexible line means secured to said frame means and extending outwardly therefrom around said primary shoe sheave means and then around said first base sheave means and then around said secondary shoe sheave means and then around said second base sheave means and then around said frontal sheave means and then attached to a container to facilitate loading thereof upon said upper support surface of a roll-off vehicle.