Patent ID: 6817849
Filing Date: 2004-11-16
Classification: E01C

Abstract:
Apparatus for alternatively forming either a straight or a curved structure on a surface, said apparatus comprising, in combination:a vehicle including a hopper defining a hopper interior for accommodating material to be formed into a curved structure, said hopper having a discharge opening communicating with said hopper interior; a slip form mold connected to said hopper defining a slip form mold interior and a slip form mold exit opening communicating with said slip form mold interior, said slip form mold interior being in communication with said discharge opening for receiving said material from said hopper, said slip form mold including pivotally connected first and second slip form mold portions; and mover means operatively associated with said second slip form mold portion to pivotally move said second slip form mold portion relative to said first slip form mold portion.