Patents Assigned to Terrafix Erosion Control Products, Inc.
  • Erosion control blocks
    Patent number: 4436447
    Abstract: Interlocking concrete blocks for controlling erosion of banks of bodies of water are provided with improved wave resistance by providing pairs of spigots on one side of the block and a slot or slots on the other side of the block so as to allow longitudinal movement of courses in a bed formed from the blocks while also allowing relative angular movement of adjacent blocks.
    Type: Grant
    Filed: July 14, 1981
    Date of Patent: March 13, 1984
    Assignee: Terrafix Erosion Control Products, Inc.
    Inventor: Robert E. Crowe
  • Block laying machine
    Patent number: 4227834
    Abstract: A machine for assisting in the laying of courses of blocks to form a ground covering layer in erosion control systems has a flexible apron on which the blocks are laid, a frame attached to one side of the apron, and two spaced and independently actuable pusher bar assemblies, which can act between the frame and the blocks to position the blocks, steer the machine, and withdraw the apron from beneath the blocks.
    Type: Grant
    Filed: January 16, 1979
    Date of Patent: October 14, 1980
    Assignee: Terrafix Erosion Control Products, Inc.
    Inventor: Robert E. Crowe