Patents by Inventor Derek V. Russell

Derek V. Russell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Reinforcing member
    Patent number: 4658561
    Abstract: There is disclosed a longitudinally flexible reinforcing member built up from a plurality of conjoined layers having interstices therein and formed from steel wire or similar material. The members are preferably of plank-like form, and are particularly suitable for reinforcing a mortar lining to a sewer.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: April 21, 1987
    Assignee: Alphacrete Linings Limited
    Inventor: Derek V. Russell
  • Reinforcing material
    Patent number: 4647515
    Abstract: There is disclosed a reinforcing mat for use in the production of a ferro-cement structure. The mat comprises outer layers of spaced rods or wires having further layers of wire mesh therebetween. The rods or wires of the outer layers are welded together at their crossing points to secure the further layers therebetween.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: March 3, 1987
    Assignee: Alphacrete Construction Linings (UK) Limited
    Inventor: Derek V. Russell
  • Method for reinforcing tubular ducts
    Patent number: 4519177
    Abstract: There is disclosed a method of reinforcing a tubular duct using a longitudinally flexible reinforcing member built up from a plurality of combined layers having interstices therein and formed from steel wire or similar material. The method involves arraying the member circumferentially inside the duct, securing the member against the wall of the duct, and applying concrete to the covered walls.
    Type: Grant
    Filed: December 8, 1982
    Date of Patent: May 28, 1985
    Assignee: Alphacrete Construction Linings (UK) Limited
    Inventor: Derek V. Russell