Patent ID: 6092735
Filing Date: 2000-07-25
Classification: E01B

Abstract:
An adjustable rail anchorage device supportable on a support surface for locating a rail, comprising:a mounting member maintained fixed in position on said support surface,a rail clip coupled to said mounting member for anchoring the rail and for receiving the lateral load from said rail, said rail clip having a through opening with inner circular wall surfaces,a rotatable cam engaging said rail clip and said mounting member so that rotation of said cam around said mounting member enables lateral movement of said rail clip, said cam being maintained in position with thread locking means engaging said mounting member,said rotatable cam having an upper flange portion mounted adjacent said rail clip, a lower circular boss portion engaged in said opening in said rail clip and a passageway extending through said upper flange portion and through said lower circular boss portion for passage of said mounting member in said cam,said lower circular boss portion of said rotatable cam having an outer circular wall defining said passageway extending through said lower circular boss portion of said rotatable cam; said outer circular wall of said lower circular boss portion having an opened portion where the projected perimeter of said outer circular wall approximately coincides with the projected perimeter of the passageway in said upper flange portion, the longitudinal axis through the center of the passageway being offset from the longitudinal axis through the center of the lower circular boss portion, and which said passageway extending through at least said lower circular boss portion of said rotatable cam locates said mounting member in said inner surfaces of said opening of said rail clip, andwherein said rotation of said rotatable cam around said mounting member enables said rail clip to be moved laterally relative to the rail and said opened portion of said outer circular wall of said lower circular boss portion of said cam to be rotated around said mounting member in said rail clip so that the lateral load from the rail to said rail clip is selectively transferred to the mounting member (a) by said cam, (b) by said rail clip, or (c) by both said cam and said rail clip combined.