Patent ID: 9340969
Filing Date: 2016-05-17
CPC Classification: B28B,E01C,E04B

Claim Text:
1. A concrete dowel system for limiting vertical movement between adjacent first and second concrete structures and permitting longitudinal and traverse horizontal movement between the adjacent first and second concrete structures, the system comprising: a base member attachable to a form which forms the first concrete structure; a dowel-receiving sheath having an inner tube defining a longitudinal axis, the dowel-receiving sheath being attachable to the base member so that the longitudinal axis of the inner tube of the dowel-receiving sheath is perpendicular to a vertical edge surface of the form; left and right crush tubes laterally disposed adjacent to left and right sides of the dowel-receiving sheath when the base member and the dowel-receiving sheath are attached to the vertical edge surface of the form; an outer sheath covering the dowel-receiving sheath and the left and right crush tubes; wherein the outer sheath forms voids on the left and right lateral sides of the dowel-receiving sheath to allow for transverse horizontal movement with respect to the longitudinal axis between the adjacent first and second concrete structures.