Box-girder
CA 1269511 C · Owner: Schmitt, Jurgen · Inventors: Krause, Lothar; Schmitt, Jurgen; Rump, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a box girder having lateral web plates extending between top and bottom flanges, as a means of stiffening an angle section is, welded discontinuously to the web plates between the said web plates which join the flanges together. A triangle is formed out of an angle section and the web plate area lying between the legs of the triangle, the triangle preventing the box girder from changing into a parallelogram and imparting necessary stiffness to the web plates.
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 May 29, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 2007.
- 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.