Bridge construction
CA 1311094 C · Owner: Tadros, Gamil S. · Inventors: Calder, David; Tadros, Gamil S.; Dilger, Walter H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, The invention relates to a method of constructing a cable-stayed bridge extending between at least three towers. Initially, a horizontally extending truss spanning from a first tower to a second tower is moved longitudinally to be projected from the second tower to a third tower. The truss is then elevated. A plurality of stay cables are then strung from an elevated location on the second tower to a series of temporary connections to the truss on both sides of the second tower. A deck portion is then constructed on the truss on both sides of the second tower, and the cables that are not connected to the truss are connected to this deck portion. Finally the cables are disconnected …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.